Heat shock protein DnaK--substrate of actin-specific bacterial protease ECP32.

Autor: Morozova AV; Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia. avmoro@gmail.com, Khaitlina SY, Malinin AY
Jazyk: angličtina
Zdroj: Biochemistry. Biokhimiia [Biochemistry (Mosc)] 2011 Apr; Vol. 76 (4), pp. 455-61.
DOI: 10.1134/s0006297911040080
Abstrakt: It has been found that actin-specific bacterial protease ECP32 cleaves prokaryotic heat shock protein DnaK, which belongs to the family of heat shock proteins with molecular weight 70 kDa. We propose a new one-step method for DnaK purification using heat treatment. The technique yields ~1 mg of partially purified DnaK from 25 g of wet bacterial biomass. Polyclonal antibodies against DnaK were obtained. The degree of ECP32 catalyzed proteolysis of partially purified DnaK and that of DnaK in initial cell extracts was compared.
Databáze: MEDLINE