Vitamin B₁₂ Binders (Transcobalamins) in Serum

References

• Barker H. A. Corrinoid-dependent enzymic reactions. Ann. Rev. Biochem. 1972; 41: 55
   PubMed Web of Science ®Google Scholar
• Poston J. M., Stadtman T. C. Cobamides as cofactors: methylcobarnides and the synthesis of methionine, methane and acetate. Cobalamin Biochemistry and Pathophysiology, B. M. Babior. John Wiley & Sons, New York 1975; 111
   Google Scholar
• Babior B. M. Cobamides as cofactors: adenosylcobamide-dependent reactions. Cobalamin. Biochemistry and Pathophysiology, B. M. Babior. John Wiley & Sons, New York 1975; 141
   Google Scholar
• Poston J. M. Leucine 2,3-Aminomutase, an enzyme of leucine catabolism. J. Biol. Chem. 1976; 251: 1859
   PubMed Web of Science ®Google Scholar
• Poston J. M. Cobalamin dependent formation of leucine and -leucine by rat and human tissue. J. Biol. Chem. 1980; 255: 10067
   PubMed Web of Science ®Google Scholar
• Chanarin I. The Megaloblastic Anaemias,2nd ed. Blackwell Scientific, Oxford 1979
   Google Scholar
• Das K. C., Herbert V. Vitamin Bi2-folate interrelations. Clin. Haematol. 1976; 5: 697
   PubMedGoogle Scholar
• Hoffbrand A. V., Ganeshaguru K., Mooton J. W. L., Tripp E. Megaloblastic anaemia: initiation of DNA synthesis in excess of DNA chain elongation as the underlying mechanism. Clin. Haematol. 1976; 5: 727
   Google Scholar
• Kolhouse J. F., Allen R. H. Recognition of two intracellular cobalamin binding proteins and their identification as methyimalonyl-CoA mutase and methionine synthetase. Proc. Nat. Acad. Sci. U.S.A. 1977; 74: 921
   PubMed Web of Science ®Google Scholar
• Mellman I. S., Youngdahl-Turner P., Willard H. F., Rosenberg L. E. Intracellular binding of radioactive hydroxocobalamin to cobalamin-dependent apoenzymes in rat liver. Proc. Nat. Acad. Sci. U.S.A. 1977; 74: 916
   PubMed Web of Science ®Google Scholar
• Mellman I., Willard H. F., Rosenberg L. E. Cobalamin binding and cobalamin dependent enzyme activity in normal and mutant human fibroblasts. J. Clin. Invest. 1978; 62: 952
   PubMed Web of Science ®Google Scholar
• Rosenberg L. E., Patel L., Lilljeqvist A-C. Absence of an intracellular cobalamin-binding protein in cultured fibroblasts from patients with defective synthesis of 5'-deoxyadenosyI cobalamin and methyl cobalamin. Proc. Nat, Acad. Sci. U.S.A. 1975; 72: 4617
   PubMed Web of Science ®Google Scholar
• Ross G. I. M. Vitamin B.2assay in body fluids. Nature (London) 1950; 166: 270
   PubMed Web of Science ®Google Scholar
• Rosenthal H. L., Sarett H. P. The determination of vitamin B12 activity in human serum. J. Biol. Chem. 1952; 199: 433
   PubMed Web of Science ®Google Scholar
• Gottleib C. W., Retief F. P., Herbert V. Blockade of vitamin Bu binding sites in gastric juice, serum and saliva by analogues and derivatives of vitamin B12and by antibody to intrinsic factor. Biochim. Biophys. Acta. 1967; 141: 560
   PubMedGoogle Scholar
• Kolhouse F. J., Allen R. H. Absorption, plasma transport and cellular retention of cobalamin analogues in the rabbit. Evidence for the existence of multiple mechanisms that prevent the absorption and tissue dissemination of naturally occurring cobalamin analogues. J. Clin. Invest. 1977; 60: 1381
   PubMed Web of Science ®Google Scholar
• Stenman U-H. Intrinsic factor and the vitamin Bj binding proteins. Clin. Haematol. 1976; 5: 473
   PubMedGoogle Scholar
• Rachmilewitz B., Rachmilewitz M., Moshkowitz B., Gross J. Serum transcobalamin in myeloid leukaemia. J. Lab. Clin. Med. 1971; 78: 275
   PubMed Web of Science ®Google Scholar
• Hall C. A., H-Hitzig W., Green P. D., Begley J. A. Transport of therapeutic cyanocobalamin in the congenital deficiency of transcobalamin II (TC II). Blood 1972; 53: 251
   Google Scholar
• Pitney W. R., Beard M. F., Loon E. J. Observations on the bound form of vitamin Bn in human serum. J. Biol. Chem. 1954; 207: 143
   PubMed Web of Science ®Google Scholar
• Ostrowski W., Skarzynski B., Zak Z. Vitamin B12; in the proteins fractions of human blood serum. Bull. Acad. Pol. Sci. 1954; 2: 9
   Google Scholar
• Ross G. I. M., Mollin D. L., Cox E. V., Ungley C. C. Hematologic responses and concentrations of vitamin B12in serum and urine following oral administration of vitamin B12 without intrinsic factor. Blood 1954; 9: 473
   PubMed Web of Science ®Google Scholar
• Hall C. A., Finkler A. E. In vivoplasma vitamin Bu binding in Bi; deficient and non-deficient subjects. J. Lab. Clin. Med. 1962; 60: 765
   PubMed Web of Science ®Google Scholar
• Hall C. A., Finkler A. E. A second vitamin Bn binding substance in human plasma. Biochim. Biophys. Acta. 1963; 78: 233
   Google Scholar
• Hall C. A., Finkler A. E. Abnormal transport of vitamin B in plasma in chronic myelogenous leukaemia. Nature (London). 1964; 204: 1207
   PubMed Web of Science ®Google Scholar
• Hall C. A., Finkler A. E. The dynamics of transcobalamin II: a vitamin B];binding substance in plasma. J. Lab. Clin. Med. 1965; 65: 459
   PubMed Web of Science ®Google Scholar
• Hall C. A., Finkler A. E. Measurement of the amounts of the individual vitamin B u binding proteins in plasma. Blood 1966; 27: 611
   PubMed Web of Science ®Google Scholar
• Lawrence C. The heterogeneity of the high molecular weight Bu binder in serum. Blood 1969; 33: 899
   PubMed Web of Science ®Google Scholar
• Hurlimann J., Zuber C. Vitamin Bu binders in human body fluids, I. Antigenic and physico-chemical characteristics. Clin. Exp. Immunol. 1969; 4: 125
   PubMed Web of Science ®Google Scholar
• Gizis E. J., Dietrich M. F., Choi G., Meyer L. M. A Co vitamin Bu binder in normal serum eluted by DEAE-cellulose chromatography with 0,1 M sodium phosphate buffer, pH 5.8. J. Lab. Clin. Med. 1970; 75: 673
   PubMed Web of Science ®Google Scholar
• Bloomfield F., Scott J. Identification of a new vitamin Bu binder (Transcobalamin III) in normal human serum. Brit. J. Haematol. 1972; 22: 33
   PubMed Web of Science ®Google Scholar
• Carmel R. Vitamin B12binding protein abnormality in subjects without myeloproliferative disease. 1. Elevated serum vitamin Bu binding capacity in patients with leucocytosis. Brit. J. Haematol. 1972; 22: 43
   PubMedGoogle Scholar
• Grasbeck R., Simons K., Sinkonnen I. Purification of intrinsic factor and vitamin Bu binders from human gastric juice. Ann. Exp. Biol. Fenn. 1962; 40(Suppl. 6)1
   PubMedGoogle Scholar
• Jacobs E., Herbert V. Measurement of unsaturated “Granulocyte-related” (TC I and TC 111) and “Liver-related” (TC II) Bu binders by instant batch separation using a microfine precipitate of silica (Quso G 32). J. Lab. Clin. Med. 1975; 86: 505
   PubMed Web of Science ®Google Scholar
• Stenman U-H. Characterization of R-type vitamin Bu-binding proteins by isoelectric focusing. II. Comparison of cobalophilin (R proteins) from different sources. Scand. J. Clin. Lab. Invest. 1975; 35: 147
   PubMed Web of Science ®Google Scholar
• Gullberg R. Review: classification of human vitamin Bu binding proteins. Scand. J. Gastroenterol 1975; 10: 561
   PubMed Web of Science ®Google Scholar
• Nochumson S., Meyer L. M. Behavior of human serum R-type vitamin Bu-binding proteins (cobalophilins) on lectin - sepharose affinity resins. Proc. Soc. Exp. Biol. Med. 1981; 166: 51
   PubMed Web of Science ®Google Scholar
• Begley J. A., Hall C. A. Measurement of vitamin B2-binding proteins of plasma. I. Technique. Blood 1975; 45: 281
   PubMed Web of Science ®Google Scholar
• Hall C. A. The transport of vitamin Bu from food to use within the cells. J. Lab. Clin. Med. 1979; 94: 811
   PubMed Web of Science ®Google Scholar
• Grasbeck R. Soluble and membrane-bound vitamin Bu transport proteins. Vitamin B_l2, B. Zagalak, W. Friedrich. De Gruyter, Berlin 1979
   Google Scholar
• Retief F. P., Gottlieb C. W., Herbert V. Mechanism of vitamin Bu uptake by erythrocytes. J. Clin. Invest. 1966; 45: 1907
   PubMed Web of Science ®Google Scholar
• Nexo E., Olesen H. Changes in the ultraviolet and circular di-chroism spectra of aquo-, hydroxo-, azido - and cyanocobalamin when bound to human intrinsic factor or transcobalamin I. Biochim. Biophys. Acta. 1976; 446: 143
   PubMedGoogle Scholar
• Simons K. Vitamin Bu binders in human body fluids and blood cells. Soc. Sci. Fen. 1964; 27: 1
   Google Scholar
• Hall C. A. Transcobalamins I and II as the natural transport proteins of vitamin Bu. J. Clin. Invest. 1975; 56: 1125
   PubMed Web of Science ®Google Scholar
• Allen R. H., Majerus P. W. Isolation of vitamin Bu-binding proteins using affinity chromatography. III. Purification and properties of human plasma Transcobalamin I. I. J. Biol. Chem. 1972; 247: 7709
   PubMed Web of Science ®Google Scholar
• Burger R. L., Mehlman C. S., Allen R. H. Human plasma R-type vitamin Bu-binding proteins. I. Isolation and characterization of transcobalamin I, transcobalamin III, and the normal granulocyte vitamin Bu-binding protein. J. Biol. Chem. 1975; 250: 7700
   PubMed Web of Science ®Google Scholar
• Burger R. L., Waxman S., Gilbert H. S., Mehlman C. S., Allen R. H. Isolation and characterization of a novel vitamin Bu-binding protein associated with hepatocellular carcinoma. J. Clin. Invest. 1975; 56: 1262
   PubMed Web of Science ®Google Scholar
• Nexo E., Olesen H., Christensen J. M., Thomsen J., Kristiansen K. Characterization of a cobalamin-binding protein from a patient with hepatoma. Scand. J. Lab. Clin. Invest. 1975; 35: 683
   PubMed Web of Science ®Google Scholar
• Burger R. L., Allen R. H. Characterization of vitamin Bu-binding proteins isolated from human milk and saliva by affinity chromatography. J. Biol. Chem. 1974; 249: 7220
   PubMed Web of Science ®Google Scholar
• Carmel R., Herbert V. Deficiency of vitamin B12binding alpha globulin in two brothers. Blood 1969; 33: I
   Web of Science ®Google Scholar
• Hall C. A., Begley A. Congenital deficiency of human R-type binding proteins of cobalamin. Am. J. Clin. Invest. 1977; 29: 619
   Google Scholar
• Azen E. A., Denniston C. Genetic polymorphism of vitamin Bu binding (R) proteins of human saliva detected by isoelectric focusing. Biochem. Genet. 1979; 17: 909
   PubMed Web of Science ®Google Scholar
• Nexo E. Transcobalamin 1 and other human R-binders: purification, structural, spectral and physiological studies. Scand. J. Haematol. 1978; 20: 221
   PubMedGoogle Scholar
• Simons K., Grasbeck R. Immunoelectrophoresis of human gastric juice. Clin. Chim. Acta 1963; 8: 425
   PubMed Web of Science ®Google Scholar
• Jacob E., Herbert V. Demonstration that transcobalamin 1 (RC I) is released by normal granulocyte precursors. Clin. Res. 1974; 22: 395A
   Google Scholar
• Canellos G. P., Cohen M. P. A vitamin Bu binding protein derived from platelets of chronic granulocytic leukaemia. (CGL). Clin. Res. 1971; 19: 413
   Google Scholar
• Carmel R. The vitamin Bn binding proteins of saliva and tears and their relationship to other vitamin B2binders. Biochim. Biophys. Acta 1972; 263: 747
   PubMed Web of Science ®Google Scholar
• Stenman U-H. Amniotic fluid vitamin Bn-binding protein. Purification and characterization with isoelectric focusing and other techniques. Biochem. Biophys. Acta 1974; 342: 173
   PubMedGoogle Scholar
• Finkler A. E., Green P. D., Hall C. A. Immunological properties of human vitamin Bu-binders. Biochim. Biophys. Acta 1970; 200: 151
   PubMed Web of Science ®Google Scholar
• Carmel R. Coltman, C, Monocytic vitamin Bj binding protein. Blood 1971; 37: 360
   PubMed Web of Science ®Google Scholar
• Hurlimann J., Zuber C. Vitamin Bn-binders in human body fluids. II. Synthesis m vitro. Clin. Exp. Immunol. 1969; 4: 141
   PubMed Web of Science ®Google Scholar
• Hall C. A., Rapazzo M. E. Release of transcobalamin II by canine organs. Proc. Soc. Exp. Biol. Med. 1975; 148: 1202
   PubMed Web of Science ®Google Scholar
• Allen R. H., Majerus P. W. Isolation of vitamin Bn-binding proteins using affinity chromatography. II. Purification and properties of a human granulocyte vitamin Bij-binding protein. J. Biol. Chem. 1972; 247: 7702
   PubMed Web of Science ®Google Scholar
• Hippe E., Haber E, Olesen H. Nature of vitamin Bu binding. II. Steric orientation of vitamin Bu on binding and number of combining sites of human intrinsic factor and transcobalamins. Biochim. Biophys. Acta 1971; 243: 75
   PubMedGoogle Scholar
• Hippe E., Olesen H. Nature of vitamin Bn binding. III. Thermodynamic of binders to human intrinsic factor and transcobalamins. Biochim. Biophys. Acta 1971; 243: 83
   PubMedGoogle Scholar
• Hippe E. Changes in stokes radius on binding of vitamin Bu to human intrinsic factor and transcobalamins. Biochim. Biophys. Acta 1970; 208: 337
   PubMedGoogle Scholar
• Kohlhouse F. J., Allen R. H. Absorption, plasma transport and cellular retention of cobalamin analogues in the rabbit. Evidence for the existence of multiple mechanisms that prevent the absorption and tissue dissemination of naturally occurring cobalamin analogues. J. Clin. Invest. 1977; 60: 1381
   PubMed Web of Science ®Google Scholar
• Nexo E., Olesen H., Hansen M. R. Strength of binding of methyl -, 5'-deoxyadenosyl-, cyano-and hydro-oxocobalamin to human transcobalamin 1 and II and intrinsic factor. Vitamin B_n, B. Zagalak, W. Friedrich. De Gruyter, Berlin 1979; 859
   Google Scholar
• Cooper B. A., Dirks J. Evidence for complexing of transcobalamin-2 in canine and human plasma and serum. Am. J. Physiol. 1973; 224: 758
   PubMedGoogle Scholar
• Allen R. H., Seetharam B., Podel E., Alpers D. Effect of proteolytic enzymes on the binding of cobalamin to R-protein and intrinsic factor.In vitroevidence that a failure to partially degrade R-protein is responsible for cobalamin malabsorption in pancreatic insufficiency. J. Clin. Invest… 1978; 61: 47
   PubMed Web of Science ®Google Scholar
• MacDonald C. M.L.A., Farquharson J., Bessent R. G., Adams J. F. The forms of vitamin B n on the transcobalamins. Clin. Sci. Mol. Med. 1977; 52: 215
   PubMedGoogle Scholar
• Nexo E. Characterization of cobalamins attached to transcobalamin 1 and transcobalamin II in human plasma. Scand. J. Haematol. 1977; 18: 358
   PubMedGoogle Scholar
• Marcoullis G., Grasbeck R., Salonen E-M. Identification and characterization of intrinsic factor and cobalophilin from pig ileal and pyloric mucosa. Biochim. Biophys. Acta 1977; 497: 663
   PubMedGoogle Scholar
• Scott J. M., Bloomfleld F. J., Stebins R., Herbert V. Studies on derivation of transcobalamin III from granulocytes. Enhancement by lithium and elimination by fluoride ofin vitroincrements in vitamin Bu binding capacity. J. Clin. Invest. 1974; 53: 228
   PubMed Web of Science ®Google Scholar
• Burger R. L., Mehlman C. S., Allen R. H. Human plasma R-type vitamin Bu-binding proteins. I. Isolation and characterization of transcobalamin 1, transcobalamin III, and the normal granulocyte vitamin Bu binding protein. J. Biol. Chem. 1975; 250: 7700
   PubMed Web of Science ®Google Scholar
• Burger R. L., Schneider R. J., Mehlman C. S, Allen R. H. Human plasma R-type vitamin Bu-binding proteins. II. The role of transcobaiamin I, transcobaiamin III and the normal granulocyte Bn-binding protein in the plasma transport of vitamin B2. J. Biol. Chem. 1975; 250: 7707
   PubMed Web of Science ®Google Scholar
• Zittoun J., Zirtoun R., Marquet J., Sultan C. The three transcobalamins in myeloproliferative disorders and acute leukaemia. Brit. J. Haematol. 1975; 31: 287
   PubMed Web of Science ®Google Scholar
• Bloomfield R. J., Weir D. G, Scott J. M. Some properties of transcobaiamin 111 from normal human plasma. Brit. J. Haematol. 1972; 23: 289
   PubMed Web of Science ®Google Scholar
• Hall C. A., Finkler A. E. Vitamin Bj binding protein in polycythaemia vera. J. Lab. Clin. Med 1969; 73: 60
   PubMed Web of Science ®Google Scholar
• Bloomfield F. J., Scott J. M., Somerville J. J. F., Weir D. G. Levels in normal, pathological and foetal sera of the three transcobalamins. Irish J. Med. Sci. 1973; 142: 51
   PubMed Web of Science ®Google Scholar
• Begley J. A., Hall C. A. Measurement of vitamin B12-binding proteins of plasma. 11. Interpretation of patterns in disease. Blood 1975; 45: 287
   PubMed Web of Science ®Google Scholar
• Carmel R., Bjorndal K. In vitro observations of the binding of vitamin Bi2by serum proteins and the effect of cells on the process. Proc. Soc. Exp. Biol. Med. 1974; 146: 438
   PubMed Web of Science ®Google Scholar
• Beard M. F., Pitney W. R., Sanneman E. H. Serum concentrations of vitamin B12in patients suffering from leukaemia. Blood 1954; 9: 789
   PubMed Web of Science ®Google Scholar
• Mollin D. L., Ross G I. M. Serum vitamin Bi2concentrations in leukaemia and in some other haematological conditions. Brit. J. Haematol. 1955; 1: 155
   PubMed Web of Science ®Google Scholar
• Corcino J., Krauss S., Waxman S., Herbert V. Release of vitamin Bi2-binding protein by human leukocytes in vitro. J. Clin. Invest. 1970; 49: 2250
   PubMed Web of Science ®Google Scholar
• Kane S. P., Peters T. J. Analytical subcellular fractionation of human granulocytes with reference to the localization of vitamin Bu binding proteins. Clin. Sci. Mol. Med. 1975; 49: 171
   PubMedGoogle Scholar
• Fenrych W., Hansz J., Boduch K, Pytlak B. Relationship between cobalophilins releasing and functional state of polymorphonuclear granulocytes. Vitamin B₁₂, B. Zagalak, W. Friedrich. De Gruyter, Berlin 1979; 83
   Google Scholar
• Tisman G., Herbert V., Rosenblatt S. Evidence that lithium induces human granulocyte proliferation: elevated serum vitamin B12binding capacityin vivoand granulocyte colony proliferation in vitro. Brit. J. Haematol. 1973; 24: 767
   PubMed Web of Science ®Google Scholar
• Chikkappa G., Corcino J., Greenberg M. L., Herbert V. Correlation between various blood white cell pools and the serum B2-binding capacity. Blood 1971; 37: 142
   PubMed Web of Science ®Google Scholar
• Racbmilewitz B., Racbmilewitz M., Gross J. A vitamin Bi2binder with transcobaiamin I characteristics synthesized and released by human granulocytes in vitro. Brit. J. Haematol. 1974; 26: 557
   PubMed Web of Science ®Google Scholar
• Carmel R., Herbert V. Vitamin B12binding protein of leukocytes as a possible major source of the third vitamin B2binding protein of serum. Blood 1972; 40: 542
   PubMedGoogle Scholar
• Jacob E., Herbert V., Burger R. L., Allen R. N. Atypical plasma factor associated with bronchogenic carcinoma and complexing with R-type vitamin Bi2-binding proteins. N. Engl. J. Med. 1977; 296: 915
   PubMed Web of Science ®Google Scholar
• Hall C. A. The failure of granulocytes to produce transcobaiamin 1 (TC I). Scand. J. Haematol. 1976; 16: 176
   PubMedGoogle Scholar
• Ashwell G., Morelt A. G. The role of surface carbohydrates in the hepatic recognition and transport of circulating glycoproteins. Adv. Enzymol. 1974; 41: 99
   PubMedGoogle Scholar
• Natori H. Physicochemical analyses of vitamin Bi2binding proteins in sera, gastric juice, and leucocytes. Tumor Res. 1971; 6: 1
   Google Scholar
• Chanarin I., England J. M., Rowe K. L., Stacey J. A. Role of third serum vitamin B12binding protein in vitamin Bi2transport. Brit. J. Med. 1972; 2: 441
   PubMedGoogle Scholar
• England J. M., Clarke H. G. M., Down M. C, Chanarin I. Studies on the transcobalamins. Brit. J. Haematol. 1973; 25: 737
   PubMed Web of Science ®Google Scholar
• Hall C. A. The plasma transport of cobalamin. Vitamin B₁₂, B. Zagalak, W. Friedrich. De Gruyter, Berlin 1979; 725
   Google Scholar
• Muir M., Chanarin I. Fluxes of plasma transcobalamins following saturating doses of vitamin B2in man. Brit. J. Haematol. 1979; 43: 257
   PubMed Web of Science ®Google Scholar
• Mollin D. L., Pitney W. R., Baker S. J., Bradley J. E. The plasma clearance and urinary excretion of patenterally administered5CoBl2. Blood 1956; II: 31
   Google Scholar
• Horn B. L. Plasma turnover of Cobalt-vitamin B2bound to transcobaiamin I and II. Scand. J. Haematol. 1967; 4: 321
   PubMedGoogle Scholar
• Carmel R., Baril L. Circulating immunoglobulin-transcobalamin I (R-binder) complexes. J. Lab. Clin. Med. 1978; 91: 769
   PubMed Web of Science ®Google Scholar
• Carmel R. Large vitamin Bi2binding proteins and complexes in human serum. Vitamin B_l2, B. Zagalak, W. Friedrich. De Gruyter, Berlin 1979; 777
   Google Scholar
• Waxman S., Gilbert H. S. A tumor-related vitamin Bi2binding protein in adolescent hepatoma. N. Engl. J. Med. 1973; 289: 1053
   PubMed Web of Science ®Google Scholar
• Carmel R. Extreme elevation of serum transcobalamin 1 in patients with metastatic cancer. N. Engl. J. Med., in 1974; 282
   Google Scholar
• Carmel R., Hollander D. Extreme elevation of transcobalamin 11 levels in multiple myeloma and other disorders. Blood 1978; 51: 1057
   PubMed Web of Science ®Google Scholar
• L-Burger R., Waxman S., Gilbert H. S., Mehlman C. S., Allen R. H. Isolation and characterization of a novel vitamin B12-binding protein associated with hepatocellular carcinoma. J. Clin. Invest. 1975; 56: 1262
   PubMed Web of Science ®Google Scholar
• Cooper B. A. Equilibrium of B12binding proteins between transudates and plasma in man: evidence that transcobalamin 2in vivois smaller than albumin. Biochim. Biophys. Acta 1974; 336: 270
   Google Scholar
• Schneider R. J., Burger R. L., Mehlman C. S., Allen R. H. The role and fate of rabbit and human transcobalamin II in the plasma transport of vitamin B12in the rabbit. J. Clin. Invest. 1976; 57: 27
   PubMed Web of Science ®Google Scholar
• Hall C. A. The carriers of native vitamin B12in normal human serum. Clin. Sci. Mol. Med. 1977; 53: 453
   PubMedGoogle Scholar
• Marcoullis G., Salonen E-M., Grasbeck R. Porcine serum cobalophilin and transcobalamin identification, isolation and properties including electrofocusing patterns. Biochim. Biophys. Acta 1978; 534: 48
   PubMedGoogle Scholar
• Carmel T., Tatsis B., Baril L. Circulating antibody to transcobalamin II causing retention of vitamin B12in the blood. Blood 1977; 49: 987
   PubMed Web of Science ®Google Scholar
• Olesen H., Rehfeld J., Horn B. L., Hippe E. Stokes Radius of Co labelled vitamin BI2-trans-cobalamin I and II and12I-labelled insulin estimated by Sephadex G-200 gel filtration in human plasma at 37°C. Biochim. Biophys. Acta 1969; 194: 67
   PubMedGoogle Scholar
• Nexo E., Olesen H., Bucker D., Thomsen J. Purification and characterization of rabbit transcobalamin II. Biochim. Biophys. Acta 1977; 494: 395
   PubMedGoogle Scholar
• L-Horn B., Olesen H., Schwartz M. Turnover of57Co labelled vitamin B12-transcobalamin II and autologous l-labelled IgG in a patient with antibody to transcobalamin II. Scand. J. Haematol 1968; 5: 107
   PubMedGoogle Scholar
• Carmel R., Coltman C. A., Brubaker L. H. Serum vitamin Bi2binding proteins in neutropenia. Proc. Soc. Exp. Biol. Med. 1975; 148: 1217
   PubMed Web of Science ®Google Scholar
• Newmark P., Mester S. Effect of pH on vitamin Bi2binding by transcobalamins. Biochim. Biophys. Acta 1974; 343: 627
   PubMedGoogle Scholar
• Gilbert H. Inhibition of vitamin B12binding to transcobalamins II at low pH: basis of a procedure for quantitation of circulating TC II and R-binders. J. Lab. Clin. Med. 1977; 89: 13
   PubMed Web of Science ®Google Scholar
• Hall C. A., Finkler A. E. Isolation and evaluation of the various Bi2binding proteins in human plasma. Methods. Enzymol 1971; 18C: 108
   Google Scholar
• Horn B. L. Demonstration of transcobalamin II complex formation and binding to Sephadex G-200 at low ionic strength. Clin. Chim. Acta 1967; 18: 315
   PubMed Web of Science ®Google Scholar
• Stenman U-H. Characterization of R-type vitamin B12binding proteins by isoelectric focusing. I. The relationship between transcobalamin 1, transcobalamin III and the granulocyte R protein. Scand. J. Haematol. 1974; 13: 129
   PubMedGoogle Scholar
• Stenman U-H., Salonen E-M. Heterogeneity of transcobalamin II demonstrated by isoelectric focusing in urea. Vitamin B₁₂, B. Zagalak, W. Friedrich. De Gruyter, Berlin 1979; 873
   Google Scholar
• Lindemans J. van Kapel, J., Abels, J., Purification of human transcobalamin Il-cyanocobalamin by affinity chromatography using thermolabile immobilization of cyanocobalamin. Biochim. Biophys, Acta 1979; 579: 40
   PubMedGoogle Scholar
• Daiger S. P., Labowe M. L., Parsons M., Wang L., Cavalli-Sforza L. L. Detection of genetic variation with radioactive ligands III. Genetic polymorphism of transcobalamin II in human plasma. Am. J. Hum. Genet. 1978; 30: 202
   PubMed Web of Science ®Google Scholar
• Frater-Schroder M., Hitzig W. H., Butler R. Studies on transcobalamin (TC) 1. Detection of TC 11 isoproteins in human serum. Blood 1979; 53: 193
   PubMed Web of Science ®Google Scholar
• Nicholas J. P. Heterogeneity of antibodies against B12binders in pernicious anaemia. Vitamin Bn, B. Zagalak, W. Friedrich. Eds., De Gruyter, Berlin 1979; 791
   Google Scholar
• England J. M., Tavill A. S., Chanarin I. Hepatic synthesis of transcobalamin 11 in the rat. Clin. Sci. Mol. Med. 1973; 45: 479
   PubMedGoogle Scholar
• Tan C. H., Broekelman T. J. The effect of antibiotics on transcobalamin 11 synthesis in rabbit liver cell culture. Vitamin B₁₂, B. Zagalak, W. Friedrich. De Gruyter, Berlin 1979; 837
   Google Scholar
• Sonneborn D. W., Baskerville A. B., Regelson W. Levels of transcobalamin 11 in normal serum measured with zirconyl phosphate gel. Scand. J. Haematol 1973; 11: 8
   PubMedGoogle Scholar
• Rachmilewitz B., Rachmilewitz M., Chaouat M., Schlesinger M. Production of transcobalamin II (vitamin B12transport protein) by mouse mononuclear phagocytes. Blood 1978; 52: 1089
   PubMed Web of Science ®Google Scholar
• Hall C. A., Rapazzo M. E. Uptake of protein bound vitaminB12by canine organs. Proc. Soc. Exp. Biol. Med. 1974; 146: 898
   PubMed Web of Science ®Google Scholar
• Marcoullis G., Grasbeck R. Vitamin Bn-binding proteins in human gastric mucosa. General pattern and demonstration of intrinsic factor isoproteins typical of mucosa. Scand. J. Clin. Lab. Invest. 1975; 35: 5
   PubMed Web of Science ®Google Scholar
• Chanarin I., Muir M., Hughes A., Hoffbrand A. V. Evidence for intestinal origin for transcobalamin II during vitamin B2absorption. Brit. Med. J. 1978; I: 1453
   Google Scholar
• Frater-Schroder M., Nissen C, Gmur J., Kierat L., Hitzig W. Bone marrow participates in the biosynthesis of human transcobalamin II. Blood 1980; 56: 560
   PubMed Web of Science ®Google Scholar
• Schneider R. J., Burger R. L., Mehlman C. S., Allen R. H. The role and fate of rabbit and human transcobalamin II in the plasma transport of vitamin B12in the rabbit. J. Clin. Invest. 1976; 57: 27
   PubMed Web of Science ®Google Scholar
• Donaldson R. M., Brand ML, Serfilippi D. Changes in circulating transcobalamin II after injection of cyanocobalamin. N. Engl. J. Med. 1977; 296: 1427
   PubMed Web of Science ®Google Scholar
• Frater-Schroder ML, Hitzig W. H., Grob P. J., Kenny A. B. Increased unsaturated transcobalamin II in active autoimmune disease. Lancet 1978; ii: 238
   Google Scholar
• Rachmilewitz D., Rachmilewitz B., Rachmilewitz M., Treves A., Ligumsky M., Schlesinger M. Biochemical markers in inflammatory disease of the bowel (IBD) high transcobalamin II (TC II) levels and enhanced prostaglandin E2(PGE2) secretion by peripheral blood mononuclear cells (PMB). Gastroenterology 1979; 76: 1222
   Web of Science ®Google Scholar
• Nexo E., Hollenberg M. D. Characterization of the particulate and soluble acceptor for transcobalamin II from human placenta and rabbit liver. Biochim. Biophys. Acta 1980; 628: 190
   PubMedGoogle Scholar
• Katz M., Cooper B. A. Solubilized receptor for vitamin B]2-intrinsic factor complex from human intestine. Brit. J. Haematol. 1974; 26: 569
   PubMed Web of Science ®Google Scholar
• Fiedler-Nagy C, Rowley G. R., Coffey J. W., Muller O. N. Binding of vitamin Bu-rat transcobalamin II and free vitamin Bu to plasma membranes isolated from rat liver. Brit. J. Haematol 1975; 31: 311
   PubMed Web of Science ®Google Scholar
• Lindemans J., van Kapel J., Abels J. Evidence for the solubilization of the transcobalamin II receptor from rat liver membranes. Brit. J. Haematol 1979; 43: 495
   Web of Science ®Google Scholar
• Friedman P. A., Shia M. A., Wallace J. K. A saturable high affinity binding site for transcobalamin II-vitamin B2complexes in human placental membrane preparations. J. Clin. Invest. 1977; 59: 51
   PubMed Web of Science ®Google Scholar
• Seligman P. A., Allen R. H. Characterization of the receptor for transcobalamin II isolated from human placenta. J. Biol. Chem. 1978; 253: 1766
   PubMed Web of Science ®Google Scholar
• Youngdahl-Turner P., Rosenberg L. E., Allen R. H. Binding and uptake of transcobalamin II by human fibroblasts. J Clin. Invest. 1978; 61: 133
   PubMed Web of Science ®Google Scholar
• Youngdahl-Turner P., Mellman I. S., Allen R. H., Rosenberg L. E. Protein mediated vitamin uptake absorptive endocytosis of transcobalamin Il-cobalamin complex by cultured human fibroblasts. Exp. Cell. Res… 1979; 118: 127
   PubMed Web of Science ®Google Scholar
• Cooper B. A., Paranchych W. Selective uptake of specifically bound cobalt 58 vitamins Bi2by human and mouse tumour cells. Nature (London) 1961; 191: 393
   PubMed Web of Science ®Google Scholar
• Relief F. P., Gottlieb C. W., Herbert V. Delivery of Co57B12to erythrocytes from α and β globulin of normal, Bi2deficient and chronic myeloid leukemia serum. Blood 1967; 29: 837
   Google Scholar
• Finkler A. E., Hall C. A. Nature of the relationship between vitamin B2binding and cell uptake. Arch. Biochem. Biophys. 1967; 120: 79
   PubMed Web of Science ®Google Scholar
• Hakami N., Neiman P. E., Cenellos G. P., Lazerson J. Neonatal megaloblastic anemia due to inherited transcobalamin II deficiency in two siblings. N. Engl. J. Med. 1971; 285: 1163
   PubMed Web of Science ®Google Scholar
• Hitzig W. H., Dohmann U., Pluss H. J., Vischer D. Hereditary transcobalamin II deficiency. Clinical findings in a new family. J. Ped. 1974; 85: 822
   Web of Science ®Google Scholar
• Burman J. F., Mollin D. L., Sourial N. A., Sladden R. A. Inherited lack of transcobalamin II in serum and megaloblastic anaemia: a further patient. Brit. J. Haematol. 1979; 43: 27
   PubMed Web of Science ®Google Scholar
• Haurani F. I., Hall C. A., Rubin R. Megaloblastic anemia as a result of an abnormal transcobalamin II (Cardeza). J. Clin. Invest. 1979; 64: 1253
   PubMed Web of Science ®Google Scholar
• Seligman P. A., Steiner L. D. L., Allen R. H. Studies of a patient with megaloblastic anaemia and an abnormal transcobalamin II. N. Engl. J. Med. 1980; 303: 1209
   PubMed Web of Science ®Google Scholar
• Wickramasinghe S. N., Carmel R. Uptake of Co vitamin B12by human haemopoietic cells in vitro. Brit. J. Haematol. 1972; 23: 307
   PubMed Web of Science ®Google Scholar
• Hoffbrand A. V., Tripp E., Das K.C. Uptake of vitamin B2by phytohaemagglutinin-transformed lymphocytes. Brit. J. Haematol. 1973; 24: 147
   PubMed Web of Science ®Google Scholar
• Di Girolamo P. M., Huennekens F. M. Transport of vitamin B12into mouse leukemia cells. Arch. Biochem. Biophys. 1975; 168: 386
   PubMed Web of Science ®Google Scholar
• Hall C. A., Finkler A. E. Function of transcobalamin 11: a Bu binding protein in human plasma. Proc. Soc. Exp. Biol. Med. 1966; 123: 55
   PubMed Web of Science ®Google Scholar
• Corcino J., Zalusky R., Greenberg M., Herbert V. Coexistence of pernicious anaemia and chronic myeloid leukaemia: an experiment of nature involving vitamin Bu metabolism. Brit. J. Haematol. 1971; 20: 511
   PubMed Web of Science ®Google Scholar
• Nexo E., Olesen H., Norredam K., Schwartz M. A rare case of megaloblastic anaemia caused by disturbances in plasma cobalamin binding proteins in a patient with hepatocellular carcinoma. Scand. J. Haematol 1975; 14: 320
   PubMedGoogle Scholar
• Gimsing P., Hippe E. Increased concentration of transcobalamin I in a patient with metastatic carcinoma of the breast. Scand. J. Haematol. 1978; 21: 243
   PubMedGoogle Scholar
• Wickramsinghe S. N., England J. M., Saunders J. E., Down M. C. Role of transcobalamins 1, II, and III in the transfer of vitamin Bu to human bone marrow cells in vitro. Acta. Haematol. 1975; 54: 89
   PubMed Web of Science ®Google Scholar
• Hall C. A., Horch C, Begley J. A. The forms and transport of plasma cobalamins in normal man and in myeloproliferative states. J. Lab. Clin. Med. 1979; 94: 772
   PubMed Web of Science ®Google Scholar
• Gilbert H. S. Proposal of a possible function for granulocyte vitamin Bu binding proteins in host defence against bacteria. Blood 1974; 44: 926
   Web of Science ®Google Scholar
• Gullberg R. Possible antimicrobial function of the large molecular size vitamin Bu binding protein. Scand. J. Haematol. 1974; 9(Suppl. 29)19
   Google Scholar
• Perlman D., Barrett J. M., Jackson P. W. Cobamides synthesized by propionibacterium species. Vitamin Bn and Intrinsic Factor, H. E. Heinrich. Ferdinand Enke Verlag, Stuttgart 1962; 58
   Google Scholar
• Gibson E. L., Herbert V., Robinson W. A. Granulocyte colony stimulating activity and vitamin Bu binding proteins in human urine. Brit. J. Haematol 1974; 28: 191
   PubMed Web of Science ®Google Scholar
• Sykes J. B. Concise Oxford Dictionary6th ed. Oxford University Press, London 1976; 1233
   Google Scholar
• Horn B. L., Abluwalia B. K. The vitamin Bu binding capacity of transcobalamin I and II of normal human serum. Scand. J. Haematol 1968; 5: 64
   PubMedGoogle Scholar
• England J. M., Down M. C, Wise I. J., Linnell J. C. The transport of endogenous vitamin Bu in normal human serum. Clin. Sci. Mot. Med. 1976; 51: 47
   PubMedGoogle Scholar
• Herbert V. Diagnostic and prognostic values of measurement of serum vitamin Bu-binding proteins. Blood 1968; 32: 305
   PubMed Web of Science ®Google Scholar
• Saraya A. K., Bhaduri S., Choppa S. K., Mangalik A. Transcobalamins in chronic myeloid leukemia as the possible indicator of prognosis. Ind. J. Med. Res. 1980; 71: 381
   Web of Science ®Google Scholar
• Fernandes-Costa F. J., Metz J., in preparation.
   Google Scholar
• Gilbert H. S., Weinreb N. Increased circulation levels of transcobalamin II in Gaucher's disease. M Engl. J. Med. 1976; 295: 1096
   PubMed Web of Science ®Google Scholar
• Rachmilewitz B., Schlesinger M., Rabinowitz R., Rachmilewitz M. The origin and clinical implications of vitamin Bu binders - the transcobalamins. Vitamin Bu, B. Zagalak, W. Friedrich. De Gruyter, Berlin 1979; 765
   Google Scholar
• Lau K-S., Gottleib C., Wasserman L. R., Herbert V. Measurement of serum vitamin Bu level using radioisotope dilution and coated charcoal. Blood 1965; 26: 202
   PubMed Web of Science ®Google Scholar
• Gottlieb C, Lau K-S., Wasserman L., Herbert V. Rapid charcoal assay for intrinsic factor (IF), gastric juice unsaturated Bu binding capacity, antibody to IF, and serum unsaturated Bu binding capacity. Blood 1965; 25: 875
   PubMed Web of Science ®Google Scholar
• Beal E. W. Studies on the plasma protein binding of radioactive vitamin Bu. I. Factors influencingin vitrobinding. J. Lab. Clin. Med. 1964; 63: 969
   PubMed Web of Science ®Google Scholar
• Daisley K. W. Gel filtration of sea water. Separation of free and bound forms of vitamin Bu. Nature (London). 1961; 191: 868
   Web of Science ®Google Scholar
• Adams J. F., McEwan F. C. The separation of free and bound vitamin Bu. Brit. J. Haematol. 1974; 26: 581
   PubMed Web of Science ®Google Scholar
• Faulkner J., Carroll B., Driscoll T., Johnson P. C. Co60-vitamin Bi2binding by chromatographic fractions of human gastric contents. Am. J. Clin. Nutr. 1960; 8: 512
   PubMed Web of Science ®Google Scholar
• Meyer L. M., Bertcher R. W., Cronkite E. P., Suarez R. M., Muller I. F., Mulzac C. W., Olivarreta S. T. Co60vitamin Bu binding capacity of serum in persons with hematologic disorders, various medical diseases and neoplasms. Acta Med. Scand. 1961; 169: 557
   PubMedGoogle Scholar
• Glass G. B. J. Gastric Intrinsic Factor and Other vitamin Bu Binders. Georg Thieme Verlag, Stuttgart. 1974
   Google Scholar
• Samuels A. J., Khaund R., Werthamer S., Amaral L. Serum Bu binding as determined by the method of disc-acrylamide electrophoresis. Clin. Chim. Acta 1975; 62: 341
   PubMed Web of Science ®Google Scholar
• Hift W. The vitamin Bu binding capacity in health and disease. S. Afr. Med. J. 1966; 40: 437
   PubMedGoogle Scholar
• Asatoor A., Dalgliesh C. E. The use of deactivated charcoals for the isolation of aromatic substances. J. Chem. Soc. 1956; 2291
   Google Scholar
• Ardeman S., Chanarin I. Assay of gastric intrinsic factor in the diagnosis of addisonian pernicious anaemia. Brit. J. Haematol. 1965; 11: 305
   PubMed Web of Science ®Google Scholar
• Marquet J., Sigaux F., Zittoun J. Confrontation de seux methodes de separation rapide des transcobalamines seriques. Pathol. Biol. 1977; 25: 583
   PubMedGoogle Scholar
• Kumar S., Meyer L. M., Gams R. A. Comparison of biochemical properties of human serum Bu binders derived from Sephadex and DEAE-cellulose chromatography. Scand. J. Haematol. 1977; 18: 403
   PubMedGoogle Scholar
• Fernandes-Costa F. J., Metz J. A comparison of methods for the rapid quantitation of unsaturated transcobalamin II and the R-binding proteins. Am. J. Hemalol. 1979; 6: 253
   PubMed Web of Science ®Google Scholar
• Carmel R. A rapid ammonium sulphate precipitation technic for separating serum vitamin Bi2-binding proteins. Am. J. Clin. Pathol. 1974; 62: 367
   PubMed Web of Science ®Google Scholar
• Selhub J, Rachmilewitz B., Grossowicz N. Fractionation of serum transcobalamin on charged cellulose filters. Proc. Soc. Exp. Biol. Med. 1976; 152: 204
   PubMed Web of Science ®Google Scholar
• Morelli T. A., Begley J. A., Hall C. A. A radioimmunoassay for the R-type binders of cobalamin. Clin. Chim. Acta 1977; 77: 365
   PubMed Web of Science ®Google Scholar
• Morelli T. A., Savage R. C, Begley J. A., Hall C. A. Radioimmunoassay for serum transcobalamin II. J. Lab. Clin. Med. 1977; 89: 645
   PubMed Web of Science ®Google Scholar
• Allen R. H. Annotation. The plasma transport of vitamin Bi2. Brit. J. Haematol. 1976; 33: 161
   PubMed Web of Science ®Google Scholar
• Retief F. P., Gottlieb C. W., Kochwa S., Pratt P. W., Herbert V. Separation of vitamin B2-binding proteins of serum, gastric juice and saliva by rapid DEAE cellulose chromatography. Blood 1967; 29: 501
   PubMed Web of Science ®Google Scholar
• Jacob E., Wong K-T., Herbert V. A simple method for the separate measurement of transcobalamins I, II and 111: normal ranges in serum and plasma in men and women. J. Lab. Clin. Med. 1977; 89: 1145
   PubMed Web of Science ®Google Scholar
• Fernandes F. J., Metz J., In preparation.
   Google Scholar
• Carmel R. Letter. J. Lab. Clin. Med. 1977; 90: 949
   PubMedGoogle Scholar
• Carmel R. Vitamin Bu binding proteins in serum and plasma in various disorders. Effect of anticoagulants. Am. J. Clin. Path. 1978; 69: 319
   PubMed Web of Science ®Google Scholar
• Costanzi J. J., Young B. K., Carmel R. Serum vitamin B2and Bi2-binding protein levels associated with oral contraceptives. Tex. Rep. Biol, Med. 1978; 36: 69
   PubMedGoogle Scholar
• Fleming A. F., Ogunfunmilade Y. A., Carmel R. Serum vitamin B2levels and vitamin B2binding proteins of serum and saliva of healthy Nigerians and Europeans. Am. J. Clin. Nutr. 1978; 31: 1732
   PubMed Web of Science ®Google Scholar
• Areekul S., Panatampon P., Doungbarn J. Vitamin B12 and vitamin Bi2binding proteins in liver disease. Southeast Asian J. Trop. Med. Pub. Health 1977; 8: 322
   PubMedGoogle Scholar
• Bloomfield J., Scott J. M., Herbert V. Unpublished observations, quoted by: Jacob, E., Wong, K.T. J., Herbert, V., A simple method for the separate measurement of transcobalamins I, II, and III: normal ranges in serum and plasma in men an women. J. Lab. Clin. Med. 1977; 89: 1145
   PubMedGoogle Scholar
• Gizis E. J., Meyer L. M. Separation of transcobalamins on small DEAE-cellulose columns. Proc. Soc. Exp. Biol. Med. 1972; 140: 326
   PubMed Web of Science ®Google Scholar
• Gullberg R. Vitamin B.2binding proteins in normal human blood plasma and serum. Scand. J. Haematol. 1972; 9: 639
   PubMedGoogle Scholar
• Kumar S., Meyer L. M., Gams R. A. Studies on vitamin Bu binders of human serum (1) isolation and characterization. Proc. Soc. Exp. Biol. Med. 1974; 147: 377
   PubMed Web of Science ®Google Scholar
• Lawrence C. Gel filtration studies of serum B12binding: an abnormal pattern in patients with vitamin B12deficiency. Blood 1969; 34: 774
   PubMed Web of Science ®Google Scholar
• Mintz U., Selhub J., Butler A. E., Golomb H. M. Vitamin Bu binding protein in hairy cell leukemia and other lymphoproliferative disorders. Clin. Res. 1979; 27: 301A
   Google Scholar
• Nexo E., Andersen J. Unsaturated and cobalamin saturated transcobalamins I and II in normal plasma. Scand. J. Clin. Lab. Invest. 1977; 37: 723
   PubMed Web of Science ®Google Scholar
• Rachmilewitz B., Manny N., Rachmilewitz M. The transcobalamins in polycythaemia vera. Scand. J. Haematol. 1977; 19: 453
   PubMedGoogle Scholar
• Shojania A. M., Wylie B. The effect of oral contraceptives on vitamin Bi2metabolism. Am. J. Obstet. Gynaecol. 1979; 135: 129
   PubMed Web of Science ®Google Scholar
• Fernandes-Costa F., Metz J. A comparison of serum transcobalamins in White and Black subjects. Am. J. Clin. Nutr., (in press).
   Google Scholar
• Fernandes-Costa F., Metz J. A sex difference in serum transcobalamins. Am. J. Hematol., (in press).
   Google Scholar
• Rothenberg S. P. Immunologic isolation of human intrinsic factor. Blood 1965; 26: 868
   Web of Science ®Google Scholar
• Puutula L., Grasbeck R. One-million-fold purification of transcobalamin II from human plasma. Biochim. Biophys. Acta 1972; 263: 734
   PubMedGoogle Scholar
• Hall C. A., Finkler A. E. Protein-mediated uptake of vitamin Bn by cells in tissue culture. The Cobalamins, H. R. V. Arnstein, R. J. Wrighton. Churchill-Livingstone, Edinburgh 1971; 49
   Google Scholar
• Savage C. R., Meehan A. M., Hall C. A. Improved method for the purification of biologically active transcobalamin II. Prep. Biochem. 1976; 6: 99
   PubMed Web of Science ®Google Scholar
• Allen R. H., Majerus P. W. Isolation of vitamin Bu-binding proteins using affinity chromatography. I. Preparation and properties of vitamin B12-Sepharose. J. Biol. Chem. 1972; 247: 7695
   PubMed Web of Science ®Google Scholar
• Marcoullis G., Salonen E-M., Grasbeck R. Isolation of vitamin Bu binding proteins by combined immuno and affinity chromatography. Comparative studies on the isolated and unisolated proteins. Biochim. Biophys. Acta 1977; 495: 336
   PubMedGoogle Scholar
• Nexo E. A new principle in biospecific affinity chromatography used for purification of cobalamin binding proteins. Biochim. Biophys. Acta. 1975; 379: 189
   PubMedGoogle Scholar
• Jacobsen D., Montejano Y. Affinity photo-release purification of cobalamin-binding proteins. Vitamin_B12, B. Zagalak, W. Friedrich. De Gruyter, Berlin 1979; 949
   Google Scholar