>sp|Q3SG32|CYSG_THIDA Siroheme synthase OS=Thiobacillus denitrificans GN=cysG MNYLPIFLDLRDRHCLVVGGSETAARKAELLLRAGAHVAVAAPALHAGFEQLPDRQRLTR VADTFSPALLDGKDAVIVVEDDAAAAQIVADAARARHLPVNVADKPALCSFILPSIIDRS PIMVAVSSGGESPVLARLLRARLETLIPAAYGRLSALASRYKARVREAIQPGQRRAFWEK VFLSSVAEMVFSGRDSEAEAQLEAMIKDSAAHEPARGEVYLVGAGPGNPDLLTFRALRLM QQADVVVYDRLVSQPILDMCRRDAERIYVGKERDDHAVPQEEINMMLVRLAKEGKRTLRL KGGDPFIFGRGGEEIETLVEHGVAFQVVPGITAAAGVASYAGIPLTHRDYAQSVAFVTGH LKENTFNMNWEGIARRDQTIVIYMGLKGLPMLCEALIKHGLTADTPAAIVQHGTLPTQRV ITGTLATLPTLAVEAGLKAPTLIIVGNVVKLREKLAWYRPQAAGEAAAATPLEAPDHLA