Open AccessLocalization of DnaK and GroEL in Vibrio cholerae
Author(s) -
Jyot Jeevan,
Gautam Jitendra Kumar,
Raje Manoj,
Ghosh Amit
Publication year - 1999
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1999.tb13465.x
Subject(s) - groel , cytoplasm , heat shock protein , vibrio cholerae , immunogold labelling , biology , hsp60 , heat shock , inner membrane , microbiology and biotechnology , membrane , biochemistry , hsp70 , bacteria , ultrastructure , escherichia coli , gene , genetics , anatomy
Abstract Though the GroEL and DnaK heat shock proteins are well characterized in prokaryotes, only scanty and controversial information exist about their cellular localization. In the present study, the localization of the heat shock proteins DnaK and GroEL in normal and heat shocked cells of Vibrio cholerae , was investigated both by immunogold labeling of ultrathin sections and biochemical methods. Much of the DnaK was found to be localized at the inner membrane in unstressed cells, most probably at the Bayer's adhesion sites. Data suggested that upon heat shock, the DnaK associated with the membrane continued to remain there, but the newly synthesized DnaK appeared mostly in the cytoplasm. GroEL in both stressed and unstressed cells was found mainly in the cytoplasm.