Top cofit genes for Rru_A3660 from Rhodospirillum rubrum S1H
tRNA and rRNA cytosine-C5-methylase (NCBI)
SEED: Ribosomal RNA small subunit methyltransferase B (EC 2.1.1.-)
KEGG: ribosomal RNA small subunit methyltransferase B
Or look for negative cofitness