The Bradyrhizobium japonicum rpoH1 gene encoding a sigma 32-like protein is part of a unique heat shock gene cluster together with groESL1 and three small heat shock genes.

Abstract excerpt

The heat shock response of Bradyrhizobium japonicum is controlled by a complex network involving two known regulatory systems. While some heat shock genes are controlled by a highly conserved inverted-repeat structure (CIRCE), others depend on a sigma 32-type heat shock sigma factor. Using Western blot (immunoblot) analysis, we confirmed the presence of a sigma 32-like protein in B. japonicum and defined its...

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