, Volume 83, Issue 6, pp 880–887 | Cite as

Capacity of hyperthermophilic Crenarchaeota for decomposition of refractory proteins (α- and β-keratins)

  • S. Kh. BidzhievaEmail author
  • K. S. Derbikova
  • I. V. Kublanov
  • E. A. Bonch-Osmolovskaya
Experimental Articles


Anaerobic thermophilic archaea of the genera Thermogladius and Desulfurococcus capable of α- and β-keratin decomposition were isolated from hot springs of Kamchatka and Kunashir Island. For two of them (strains 2355k and 3008g), the presence of high-molecular mass, cell-bound endopeptidases active against nonhydrolyzed and partially hydrolyzed proteins at high values of temperature and pH was shown. Capacity for β-keratin decomposition was also found in collection strains (type strains of Desulfurococcus amylolyticus subsp. amylolyticus, D. mucosus subsp. mobilis, and D. fermentans).


hyperthermophilic archaea hydrolytic microorganisms keratin peptidases 


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Copyright information

© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  • S. Kh. Bidzhieva
    • 1
    Email author
  • K. S. Derbikova
    • 1
  • I. V. Kublanov
    • 1
  • E. A. Bonch-Osmolovskaya
    • 1
  1. 1.Winogradsky Institute of MicrobiologyRussian Academy of SciencesMoscowRussia

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