Homologs of Psest_3972 from Pseudomonas stutzeri RCH2
Anti-anti-sigma regulatory factor (antagonist of anti-sigma factor)
SEED: RsbS, negative regulator of sigma-B
26 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser