Novel form of ClpB/HSP100 protein in the cyanobacterium Synechococcus.
Synechococcus sp. strain PCC 7942 has a second clpB gene that encodes a 97-kDa protein with novel features. ClpBII is the first ClpB not induced by heat shock or other stresses; it is instead an essential, constitutive protein. ClpBII is unable to complement ClpBI function for acquired thermotolerance. No truncated ClpBII version is normally produced, unlike other bacterial forms, while ectopic synthesis of a putative truncated ClpBII dramatically decreased cell viability.
Eriksson
M J
MJ
Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, S-901 87 Umeå, Sweden.
Schelin
J
J
Miskiewicz
E
E
Clarke
A K
AK
D000220:Adaptation, Biological; D001426:Bacterial Proteins / Q000235:genetics*; D003001:Cloning, Molecular; D000458:Cyanobacteria / Q000235:genetics*; D049071:Endopeptidase Clp; D015964:Gene Expression Regulation, Bacterial; D005798:Genes, Bacterial; D020043:Genes, Essential; D006360:Heat-Shock Proteins / Q000235:genetics*; D018869:Heat-Shock Response; D010446:Peptide Fragments / Q000235:genetics; D017422:Sequence Analysis, DNA
D001426:Bacterial Proteins; C442134:ClpBII protein, Synechococcus sp.; D006360:Heat-Shock Proteins; D010446:Peptide Fragments; D049071:Endopeptidase Clp; C442133:ClpB protein, Synechococcus