Chemistry of Natural Compounds

, Volume 22, Issue 6, pp 690–693 | Cite as

Physicochemical properties of protease A from cotton seeds

  • L. G. Mezhlum'yan
  • M. A. Kuchenkova
  • P. Kh. Yuldashev


It has been found that protease A from dormant seeds of cotton plants of the Tashkent-1 variety consists of two subunits: α and β, differing in molecular weight and carbohydrate content and linked with one another by a disulfide bridge. The amino acid and carbohydrate compositions of the enzyme and its subunits have been determined. A comparative study of peptide maps of protease A and its α- and β-subunits and of their amino acid compositions has permitted the assumption that subunits α and β, in their turn, each consists of two polypeptide chains that are identical or very close in composition.


Amino Acid Composition Protamine Cotton Seed Dansyl Isoleucine Leucine 


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Literature cited

  1. 1.
    L. G. Mezhlum'yan, M. A. Kuchenkova, and P. Kh. Yuldashev, Khim. Prir. Soedin., 275 (1985).Google Scholar
  2. 2.
    E. I. Vinogradova et al., Biokhimiya,38, 3 (1973).Google Scholar
  3. 3.
    T. T. Gorovits, Khim. Prir. Soedin., 49 (1969).Google Scholar
  4. 4.
    O. Warburg and W. Christian, Biochem. Z.,310, 388 (1941).Google Scholar
  5. 5.
    S. B. Needleman, Protein Sequence Determination (Vol. 8 of Molecular Biology, Biochemistry, and Biophysics), 2nd edn., Springer, New York, Vol. 8 (1975), pp. 70–77.Google Scholar

Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • L. G. Mezhlum'yan
  • M. A. Kuchenkova
  • P. Kh. Yuldashev

There are no affiliations available

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