Homologs of sbp from Escherichia coli BW25113
sbp: sulfate transporter subunit (NCBI)
SEED: Sulfate-binding protein Sbp
KEGG: sulfate transport system substrate-binding protein
Top 100 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser