The function of Ensembl gene identifier ENSG00000136444 (RSAD1, radical S-adenosyl methionine domain containing 1) is as follows. May be a heme chaperone, appears to bind heme. Homologous bacterial proteins do not have oxygen-independent coproporphyrinogen- III oxidase activity (Probable). Binds 1 [4Fe-4S] cluster. The cluster is coordinated with 3 cysteines and an exchangeable S-adenosyl-L- methionine (By similarity). {ECO:0000250|UniProtKB:P32131, ECO:0000305|PubMed:29282292}.