Cloning and characterization of the secY gene from the cyanobacterium Synechococcus PCC7942.
The secY gene product is an essential component of the Escherichia coli cytoplasmic membrane, which mediates the protein translocation across the membrane. We found a gene homologous to secY in the genome of the cyanobacterium Synechococcus PCC7942. The deduced amino acid sequence, 439 amino acids long, shows 43% homology with that of the E. coli secY. The hydrophobic profile suggests that the Synechococcus SecY protein is an integral membrane protein containing ten membrane-spanning segments, which are closely related to the E. coli counterpart. The SecY protein may participate in the protein translocation across the cytoplasmic or thylakoid membrane in Synechococcus PCC7942.
Nakai
M
M
Department of Chemistry, Faculty of Science, Nagoya University, Japan.
Tanaka
A
A
Omata
T
T
Endo
T
T
D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000235:genetics*; D001483:Base Sequence; D003001:Cloning, Molecular; D000458:Cyanobacteria / Q000235:genetics*; D004269:DNA, Bacterial; D029968:Escherichia coli Proteins; D008969:Molecular Sequence Data; D000069816:SEC Translocation Channels; D017386:Sequence Homology, Amino Acid
D001426:Bacterial Proteins; D004269:DNA, Bacterial; D029968:Escherichia coli Proteins; D000069816:SEC Translocation Channels; C057841:SecY protein, E coli