>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=96.43 E-value=0.069 Score=32.31 Aligned_cols=93 Identities=15% Similarity=0.124 Sum_probs=66.8 Q ss_pred HHHHHHHHHHHHHCCCEEE---EECCHHHHHHHHHHCCCCEEEEEEECC-CCCHH-HHHHHHHHHC-CCCCEEEEECCCC Q ss_conf 8999999999998898999---999979999999718998999983655-99979-9999999858-9985999943797 Q gi|254780312|r 12 DDMRRFLIKALGKAGYEVV---SCNNGASAYDKVREEPFSLLLTDIVMP-EMDGI-ELARRATELD-PDLKVMFITGFAA 85 (122) Q Consensus 12 ~~~r~~l~~~L~~~G~~v~---~a~~g~~al~~~~~~~~dlii~D~~mP-~~dG~-el~~~ir~~~-~~~pii~~s~~~~ 85 (122) T Consensus 13 ~iG~~iv~~~l~~~G~~V~~lG~~vp~e~~v~~a~~~~~d~I~lS~~~~~~~~~~~~~i~~l~~~g~~~i~-v~vGG~~~ 91 (119) T cd02067 13 DIGKNIVARALRDAGFEVIDLGVDVPPEEIVEAAKEEDADAIGLSGLLTTHMTLMKEVIEELKEAGLDDIP-VLVGGAIV 91 (119) T ss_pred HHHHHHHHHHHHHCCCEEEECCCCCCHHHHHHHHHHCCCCEEEEECCCCCCHHHHHHHHHHHHHCCCCCCE-EEEECCCC T ss_conf 78999999999978998998999999999999999709999999622024268999999999976999985-99989989 Q ss_pred HHHHHHHHHCCCCEEEECCC Q ss_conf 89999999769986997697 Q gi|254780312|r 86 VALNPDSNAPKNAKVLSKPF 105 (122) Q Consensus 86 ~~~~~~~~~~g~~~~l~KP~ 105 (122) T Consensus 92 ~~~~~~~~~~Gad~~~~~a~ 111 (119) T cd02067 92 TRDFKFLKEIGVDAYFGPAT 111 (119) T ss_pred CHHHHHHHHCCCCEEECCHH T ss_conf 74399999869979977807

HHsearch alignment for GI: 254780312 and conserved domain: cd02067