Homologs of Rru_A2361 from Rhodospirillum rubrum S1H
Multi-sensor Hybrid Histidine Kinase (NCBI)
SEED: COG2202: FOG: PAS/PAC domain
Top 100 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser