Homologs of Psest_3303 from Pseudomonas stutzeri RCH2
Anti-anti-sigma regulatory factor (antagonist of anti-sigma factor)
SEED: Uncharacterized protein YrbB
29 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser