>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=96.36 E-value=0.045 Score=32.74 Aligned_cols=90 Identities=12% Similarity=0.075 Sum_probs=64.7 Q ss_pred HHHHHHHHHHHCCCEEEEE---CCHHHHHHHHHHCCCCCEEEECCCCCCC----CHHHHHHHHCCCCCCCEEEEEECCCC Q ss_conf 9999999999889899999---9979999999717999489970789987----73899996143488973999963899 Q gi|254780892|r 13 VRKVGRHLFNDFGFMVFEA---TSVCEAREFCEKELLPNYLVIDESMEGV----LEFIAHVRQMPLGTDVFVYYLLMEVD 85 (133) Q Consensus 13 ~r~~l~~~L~~~g~~v~~a---~~g~eAl~~~~~~~~pdlii~D~~mP~~----~~l~~~ir~~~~~~~~pii~lT~~~~ 85 (133) T Consensus 15 G~~iv~~~l~~~G~~V~~lG~~vp~e~~v~~a~~-~~~d~I~lS~~~~~~~~~~~~~i~~l~~~-g~~~i~v~-vGG~~~ 91 (119) T cd02067 15 GKNIVARALRDAGFEVIDLGVDVPPEEIVEAAKE-EDADAIGLSGLLTTHMTLMKEVIEELKEA-GLDDIPVL-VGGAIV 91 (119) T ss_pred HHHHHHHHHHHCCCEEEECCCCCCHHHHHHHHHH-CCCCEEEEECCCCCCHHHHHHHHHHHHHC-CCCCCEEE-EECCCC T ss_conf 9999999999789989989999999999999997-09999999622024268999999999976-99998599-989989 Q ss_pred HHHHHHHHHCCCCEEEECCC Q ss_conf 89999999769988997698 Q gi|254780892|r 86 FEKMIAGARAGANSFLLKPF 105 (133) Q Consensus 86 ~~~~~~a~~~Ga~~yl~KP~ 105 (133) 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: 254780892 and conserved domain: cd02067