Biochemical properties of the HtrA homolog from bacterium Stenotrophomonas maltophilia.

The HtrA proteins due to their proteolytic, and in many cases chaperone activity, efficiently counteract consequences of stressful conditions. In the environmental bacterium and nosocomial pathogen Stenotrophomonas maltophilia HtrA (HtrA) is induced as a part of adaptive response to host temperature (37°C). We examined the biochemical properties of HtrA and compared them with those of model HtrA from Escherichia coli.