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Better growth of chromobacterium marismortui at elevated temperature and high sodium chloride concentration is accompanied by constitutive synthesis of some heat shock proteins



Better growth of chromobacterium marismortui at elevated temperature and high sodium chloride concentration is accompanied by constitutive synthesis of some heat shock proteins



Microbiologica 14(3): 235-240



Chromobacterium marismortui cells grown in 1M or 2.5M NaCl at 30.degree. C then subject to a sudden increase in temperature (42.degree. C) displayed significant changes in their growth and patterns of protein synthesis. During adaptation to the elevated temperature, synthesis of several low molecular weight heat shock proteins (LMW hsps) continued particularly in cells growing in medium containing 2.5M NaCl. The salt requirements for the optimal growth of C. marismortui at 30.degree. C or 42.degree. C were also determined. It was found that high salt conditiosn (2.5 M NaCl) permitted better growth at 42.degree. C. Comparison of the protein patterns, of cells grown in steady-state at 30.degree. C in 1M or 2.5M NaCl, revealed a generally enhanced constitutive synthesis of several hsps exclusively under high salt conditions and elevated temperature(s).

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