Corrinoid adenosyltransferase MMAB (EC 2.5.1.-) (ATP:co(I)rrinoid adenosyltransferase MMAB) (Methylmalonic aciduria type B protein)
1_MAVCG 6_ LGSRL 11_ GLGSR 16_ LGLRG 21_ CFGAA 26_ RLLYP 31_ RFQSR 36_ GPQGV 41_ EDGDR 46_ PQPSS 51_ KTPRI 56_ PKIYT 61_ KTGDK 66_ GFSST 71_ FTGER 76_ RPKDD 81_ QVFEA 86_ VGTTD 91_ ELSSA 96_ IGFAL 101_ ELVTE 106_ KGHTF 111_ AEELQ 116_ KIQCT 121_ LQDVG 126_ SALAT 131_ PCSSA 136_ REAHL 141_ KYTTF 146_ KAGPI 151_ LELEQ 156_ WIDKY 161_ TSQLP 166_ PLTAF 171_ ILPSG 176_ GKISS 181_ ALHFC 186_ RAVCR 191_ RAERR 196_ VVPLV 201_ QMGET 206_ DANVA 211_ KFLNR 216_ LSDYL 221_ FTLAR 226_ YAAMK 231_ EGNQE 236_ KIYMK 241_NDPSA
1: Converts cob(I)alamin to adenosylcobalamin (adenosylcob(III)alamin), a coenzyme for methylmalonyl-CoA mutase, therefore participates in the final step of the vitamin B12 conversion (PubMed:12514191). Generates adenosylcobalamin (AdoCbl) and directly delivers the cofactor to MUT in a transfer that is stimulated by ATP-binding to MMAB and gated by MMAA (Probable)