>cd02067 B12-binding B12 binding domain (B12-BD). This domain binds different cobalamid derivates, like B12 (adenosylcobamide) or methylcobalamin or methyl-Co(III) 5-hydroxybenzimidazolylcobamide, it is found in several enzymes, such as glutamate mutase, methionine synthase and methylmalonyl-CoA mutase. Cobalamin undergoes a conformational change on binding the protein; the dimethylbenzimidazole group, which is coordinated to the cobalt in the free cofactor, moves away from the corrin and is replaced by a histidine contributed by the protein. The sequence Asp-X-His-X-X-Gly, which contains this histidine ligand, is conserved in many cobalamin-binding proteins.

Probab=97.24 E-value=0.0074 Score=37.17 Aligned_cols=94 Identities=20% Similarity=0.315 Sum_probs=70.9 Q ss_pred HHHHHHHHHHHHHCCCEEEE---ECCHHHHHHHHHHCCCCEEEEEEECCCCC-H-HHHHHHHHHCCCCCCCCEEEEEECC Q ss_conf 89999999999978989999---88979999999827998999950412969-5-9999999828576899599999249 Q gi|254780476|r 12 ELNMKLFRDLIETSGYIALQ---TRNGMEALELARQHKPDVIIMDIQLQEIS-G-LEITKQIKEDSELQEIPVIAVTAFA 86 (123) Q Consensus 12 ~~~~~~l~~~l~~~g~~v~~---a~~g~eal~~l~~~~~dlillD~~mp~~d-G-~el~~~ir~~~~~~~ipii~~t~~~ 86 (123) T Consensus 13 ~iG~~iv~~~l~~~G~~V~~lG~~vp~e~~v~~a~~~~~d~I~lS~~~~~~~~~~~~~i~~l~~~g-~~~i~v-~vGG~~ 90 (119) T cd02067 13 DIGKNIVARALRDAGFEVIDLGVDVPPEEIVEAAKEEDADAIGLSGLLTTHMTLMKEVIEELKEAG-LDDIPV-LVGGAI 90 (119) T ss_pred HHHHHHHHHHHHHCCCEEEECCCCCCHHHHHHHHHHCCCCEEEEECCCCCCHHHHHHHHHHHHHCC-CCCCEE-EEECCC T ss_conf 789999999999789989989999999999999997099999996220242689999999999769-999859-998998 Q ss_pred CHHHHHHHHHCCCCEEEECCC Q ss_conf 989999999769988998798 Q gi|254780476|r 87 MKGDEERIRKGGCEAYISKPI 107 (123) Q Consensus 87 ~~~~~~~~~~~g~~~~l~KPi 107 (123) T Consensus 91 ~~~~~~~~~~~Gad~~~~~a~ 111 (119) T cd02067 91 VTRDFKFLKEIGVDAYFGPAT 111 (119) T ss_pred CCHHHHHHHHCCCCEEECCHH T ss_conf 974399999869979977807

HHsearch alignment for GI: 254780476 and conserved domain: cd02067