LITERATURE CITED
- Adams, R. L. P., and R. H. Burdon. 1982. DNA methylation in eukaryotes. Crit. Rev. Biochem. 13:349–384.
- Allen, S. L., and I. Gibson. 1973. Genetics of Tetrahymena, p. 307–373. In A. M. Elliott (ed.), Biology of Tetrahymena. Dowden, Hutchinson and Roth, Stroudsburg, Pa.
- Allen, S. L., T. C. White, J. P. Langmore, and M. A. Swancutt. 1983. Highly purified micro- and macronuclei from Tetrahymena thermophila isolated by percoll gradients. J. Protozool. 30:21–30.
- Allis, C. D., and D. K. Dennison. 1982. Identification and purification of young macronuclear anlagen from conjugating cells of Tetrahymena thermophila. Dev. Biol. 93:519–533.
- Ammerman, D., and G. Steinbruck. 1981. Methylated bases in the DNA of the ciliate Stylonychia mytilus. Eur. J. Cell Biol. 24:154–156.
- Bannon, G. A., J. K. Bowen, M.-C. Yao, and M. A. Gorovsky. 1984. Tetrahymena H4 genes: structure, evolution and organization in macro- and micronuclei. Nucleic Acids Res. 12:1961–1975.
- Bannon, G. A., F. J. Calzone, J. K. Bowen, C. D. Allis, and M. A. Gorovsky. 1983. Multiple, independently regulated, polyadenylated messages for histone H3 and H4 in Tetrahymena. Nucleic Acids Res. 11:3903–3917.
- Birnboim, H. C., and J. Doly. 1979. A rapid alkaline extraction procedure for screening recombinant plasmid DNA. Nucleic Acids Res. 7:1513–1523.
- Blackburn, E. H., W.-C. Pan, and C. C. Johnson. 1983. Methylation of ribosomal RNA genes in the macronucleus of Tetrahymena thermophila. Nucleic Acids Res. 11:5131–5145.
- Bromberg, S., K. Pratt, and S. Hattman. 1982. Sequence specificity of the DNA-adenine methylase in the protozoan Tetrahymena thermophila. J. Bacteriol. 150:993–999.
- Brooks, J. E., R. M. Blumenthal, and T. R. Gingeras. 1983. The isolation and characterization of Escherichia coli DNA adenine methylase (dam) gene. Nucleic Acids Res. 11:837–851.
- Bruns, P. J., and T. B. Brussard. 1974. Pair formation in Tetrahymena pyriformis, an inducible developmental system. J. Exp. Zool. 188:337–344.
- Bruns, P. J., and T. B. Brussard. 1974. Positive selection for mating with functional heterokaryons in Tetrahymena pyriformis. Genetics 78:831–841.
- Cartinhour, S. W., and G. A. Herrick. 1984. Three different macronuclear DNAs in Oxytricha fallax share a common sequence block. Mol. Cell. Biol. 4:931–938.
- Cech, T. R., and K. M. Karrer. 1980. Chromatin structure of the ribosomal RNA genes of Tetrahymena thermophila as analyzed by trimethylpsoralen crosslinking in vivo. J. Mol. Biol. 136:395–416.
- Cummings, D. J., A. Tait, and J. M. Goodard. 1974. Methylated bases in DNA from Paramecium aurelia. Biochim. Biophys. Acta 374:1–11.
- Doerfler, W. 1983. Methylation and gene activity. Annu. Rev. Biochem. 52:93–124.
- Dugaiczyk, A., J. Hedgpeth, H. W. Boyer, and H. M. Goodman. 1974. Physical identity of the SV40 deoxyribonucleic acid sequence recognized by the Eco RI restriction endoriuclease and modification methylase. Biochemistry 13:503–512.
- Findly, R. C., and T. Pederson. 1981. Regulated transcription of the genes for actin and heat-shock proteins in cultured Drosophila cells. J. Cell Biol. 88:323–328.
- Frado, L.-L., A. T. Annunziato, and C. L. F. Woodcock. 1977. Structural repeating units in chromatin III. A comparison of chromatin subunits from vertebrate, ciliate and angiosperm species. Biochim. Biophys. Acta 475:514–520.
- Gall, J. G. 1974. Free ribosomal RNA genes in the macro-nucleus of Tetrahymena. Proc. Natl. Acad. Sci. USA 71:3078–3081.
- Gorovsky, M. A., C. Glover, C. A. Johmann, J. B. Keevert, D. J. Mathis, and M. Samuelson. 1977. Histones and chromatin structure in Tetrahymena macro- and micronuclei. Cold Spring Harbor Symp. Quant. Biol. 42:493–503.
- Gorovsky, M. A., S. Hattman, and G. L. Pleger. 1973. [6N]methyl adenine in the nuclear DNA of a eucaryote, Tetrahymena pyriformis. J. Cell Biol. 56:697–701.
- Gorovsky, M. A., M.-C. Yao, J. B. Keevert, and G. L. Pleger. 1975. Isolation of micro- and macronuclei of Tetrahymena pyriformis. Methods Cell Biol. 9:311–327.
- Hallberg, R. L., K. W. Kraus, and R. C. Findly. 1984. Starved Tetrahymena thermophila cells that are unable to mount an effective heat shock response selectively degrade their rRNA. Mol. Cell. Biol. 4:2170–2179.
- Harrison, G. S., and K. M. Karrer. 1985. DNA synthesis, methylation and degradation during conjugation in Tetrahymena thermophila. Nucleic Acids Res. 13:73–87.
- Hattman, S. 1970. DNA Methylation, p. 517–548. In P. D. Boyer (ed.), The enzymes, vol. 14. Academic Press, Inc., New York.
- Hattman, S., C. Kenny, L. Berger, and K. Pratt. 1978. Comparative study of DNA methylation in three unicellular eucaryotes. J. Bacteriol. 135:1156–1157.
- Howard, E. A., and E. H. Blackburn. 1985. Reproducible and variable genomic rearrangements occur in the developing somatic nucleus of the ciliate Tetrahymena thermophila. Mol. Cell Biol. 5:2039–2050.
- Karrer, K. M. 1983. Germ line specific DNA sequences are present on all five micronuclear chromosomes in Tetrahymena thermophila. Mol. Cell. Biol. 3:1909–1919.
- Lacks, S., and B. Greenberg. 1975. A deoxyribonuclease of Diplococcus pneumoniae specific for methylated DNA. J. Biol. Chem. 250:406–416.
- Lacks, S., and B. Greenberg. 1977. Complementary specificity of restriction endonucleases of Diplococcus pneumoniae with respect to DNA methylation. J. Mol. Biol. 114:153–168.
- Leick, V., B. Bro, and P. Bruns. 1979. Macronuclear development: a model system to study specific gene expression in nuclear differentiation, 342–350. In J. Engberg, H. Klenow, and V. Leick (ed.), Specific eukaryotic genes. Alfred Benzon Symposium 13. Munksgaard, Copenhagen.
- Maniatis, T., A. Jeffrey, and D. G. Kleid. 1975. Nucleotide sequence of the rightward operator of phage \. Proc. Natl. Acad. Sci. USA 72:1184–1188.
- Martindale, D. W., C. D. Allis, and P. J. Bruns. 1982. Conjugation in Tetrahymena thermophila: a temporal analysis of cyto-logical stages. Exp. Cell Res. 140:227–236.
- Martindale, D. W., H. M. Martindale, and P. J. Bruns. 1986. Tetrahymena conjugation-induced genes: structure and organization in macro- and micronuclei. Nucleic Acids Res. 14:1341–1354.
- McClelland, M. 1981. Purification and characterization of two new modification methylases; MClal from Caryophanon latum L and MTaqI from Thermus aquaticus YTI. Nucleic Acids Res. 9:6795–6804.
- Pratt, K., and S. Hattman. 1981. Deoxyribonucleic acid methylation and chromatin organization in Tetrahymena thermophila. Mol. Cell Biol. 1:600–608.
- Rae, P. M. M., and B. B. Spear. 1978. Macronuclear DNA of the hypotrichous ciliate Oxytricha fallax. Proc. Natl. Acad. Sci. USA 75:4992–4996.
- Ray, D. S., and P. C. Hanawalt. 1964. Properties of the satellite DNA associated with the chloroplasts of Euglena gracilis. J. Mol. Biol. 9:812–824.
- Razin, A., and H. Cedar. 1977. Distribution of 5-methylcytosine in chromatin. Proc. Natl. Acad. Sci. USA 74:2725–2728.
- Razin, A., and J. Friedman. 1981. DNA methylation and its possible biological roles. Prog. Nucleic Acid Res. Mol. Biol. 25:33–52.
- Solage, A., and H. Cedar. 1978. Organization of 5-methylcytosine in chromosomal DNA. Biochemistry 17:2934–2938.
- Southern, E. M. 1975. Detection of specific sequences among DNA fragments separated by gel electrophoresis. J. Mol. Biol. 98:503–517.
- Taylor, J. H. 1984. DNA methylation and cellular differentiation. Cell Biol. Monogr. 11:1–135.
- Van Etten, J. L., A. M. Schuster, L. Girton, D. E. Burbank, D. Swinton, and S. Hattman. 1985. DNA methylation of viruses infecting a eukaryotic Chlorella-like green alga. Nucleic Acids Res. 13:3471–3478.
- Weiske-Benner, A., and W. A. Eckert. 1985. Differentiation of nuclear structure during the sexual cycle in Tetrahymena thermophila. I. Development and transcriptional activity of macronuclear anlagen. Differentiation 28:225–236.
- Wenkert, D., and C. D. Allis. 1984. Timing of the appearance of macronuclear-specific histone variant hv 1 and gene expression in developing new macronuclei of Tetrahymena thermophila. J. Cell Biol. 98:2107–2117.
- Woodard, J., M. Gorovsky, and E. Kaneshiro. 1968. Macronuclear subnuclei in Tetrahymena. J. Cell Biol. 39:182a.
- Yao, M.-C., and M. Gorovsky. 1974. Comparison of the sequences of macronuclear and micronuclear DNA of Tetrahymena pyriformis. Chromosoma (Berl.) 48:1–18.