Top cofit genes for Rru_A2252 from Rhodospirillum rubrum S1H
Amino acid ABC transporter, permease protein, 3-TM region, His/Glu/Gln/Arg/opine (NCBI)
SEED: Histidine ABC transporter, permease protein HisQ (TC 3.A.1.3.1)
KEGG: polar amino acid transport system permease protein
Or look for negative cofitness