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

S. Kh Bidzhieva*, K. S. Derbikova, I. V. Kublanov, E. A. Bonch-Osmolovskaya

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

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).

Original languageEnglish
Pages (from-to)880-887
Number of pages8
JournalMicrobiology (Russian Federation)
Volume83
Issue number6
DOIs
StatePublished - 25 Nov 2014
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2014, Pleiades Publishing, Ltd.

Keywords

  • hydrolytic microorganisms
  • hyperthermophilic archaea
  • keratin
  • peptidases

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