Novel Form of ClpB/HSP100 Protein in the Cyanobacterium Synechococcus

AUTOR(ES)

Eriksson, Mats-Jerry

FONTE

American Society for Microbiology

RESUMO

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.

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