Abstract
Communicated by Ramaswamy H. Sarma
Acknowledgments
Authors would like to thank Prof. Alexander V. Efimov, Prof. Alexei V. Finkelstein, Dr. Anton M. Kargatov and Ms Eugenia A. Boshkova, all from the Institute of Protein Research, Russian Academy of Sciences, for valuable notes and useful discussions.
Disclosure statement
No potential conflict of interest was reported by the authors.