Synthesis of exocellular proteins during the exponential and stationary phase of growth ofBacillus megaterium |
| |
Authors: | K. J. Sastry M. Strnadová J. Chaloupka |
| |
Affiliation: | 1. Department of Molecsular Biology and Genetics, Institute of Microbiology, Czechoslovak Academy of Sciences, 142 20, Prague 4
|
| |
Abstract: | Synthesis of exocellular metalloprotease and cellular and exocellular proteins in the sporogenic strainBacillus megaterium J-27 and asporogenic strain KM 1 was investigated. Both organisms excrete the enzyme into the medium during growth and during the stationary phase. In the asporogenic strain the excretion decreases at the end of the exponential phase. In the sporogenic strain it continues during the transition to the stationary phase at the original rate and proteolytic activity in the medium increases two to three times during 2 h after the end of the exponential phase. Both organisms synthesize relatively more exocellular proteins during the exponential phase than during the stationary phase. The proportion of exooellular protein synthesized during the exponential phase does not exceed 3 % of total proteins, during the stationary phase this proportion usually decreases to less than 1 %. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |