2O2K

Crystal Structure of the Activation Domain of Human Methionine Synthase Isoform/Mutant D963E/K1071N


ChainDomainClassArchitectureTopologyHomology
A3.10.196.10 Alpha Beta Roll Cobalamin-dependent Methionine Synthase domain 1
A3.10.196.10 Alpha Beta Roll Cobalamin-dependent Methionine Synthase domain 1
A3.10.196.10 Alpha Beta Roll Cobalamin-dependent Methionine Synthase domain 1
A1.10.288.10 Mainly Alpha Orthogonal Bundle Cobalamin-dependent Methionine Synthase domain 2
A1.10.288.10 Mainly Alpha Orthogonal Bundle Cobalamin-dependent Methionine Synthase domain 2
B3.10.196.10 Alpha Beta Roll Cobalamin-dependent Methionine Synthase domain 1
B3.10.196.10 Alpha Beta Roll Cobalamin-dependent Methionine Synthase domain 1
B3.10.196.10 Alpha Beta Roll Cobalamin-dependent Methionine Synthase domain 1
B1.10.288.10 Mainly Alpha Orthogonal Bundle Cobalamin-dependent Methionine Synthase domain 2
B1.10.288.10 Mainly Alpha Orthogonal Bundle Cobalamin-dependent Methionine Synthase domain 2

Protein Family Annotation Pfam Database Homepage

ChainsAccessionIdentifierDescriptionCommentsSource
A, BPF02965Vitamin B12 dependent methionine synthase, activation domain (Met_synt_B12)Vitamin B12 dependent methionine synthase, activation domain- Domain
A, BPF02607B12 binding domain (B12-binding_2)B12 binding domainThis B12 binding domain is found in methionine synthase EC:2.1.1.13 Swiss:Q99707, and other shorter proteins that bind to B12. This domain is always found to the N-terminus of Pfam:PF02310. The structure of this domain is known [1], it is a 4 helix ...This B12 binding domain is found in methionine synthase EC:2.1.1.13 Swiss:Q99707, and other shorter proteins that bind to B12. This domain is always found to the N-terminus of Pfam:PF02310. The structure of this domain is known [1], it is a 4 helix bundle. Many of the conserved residues in this domain are involved in B12 binding, such as those in the MXXVG motif.
Domain
A, BPF02310B12 binding domain (B12-binding)B12 binding domainThis domain binds to B12 (adenosylcobamide)[1-3], it is found in several enzymes, such as glutamate mutase Swiss:Q05488, methionine synthase Swiss:Q99707 and methylmalonyl-CoA mutase Swiss:P22033. It contains a conserved DxHxxGx(41)SxVx(26)GG motif, ...This domain binds to B12 (adenosylcobamide)[1-3], it is found in several enzymes, such as glutamate mutase Swiss:Q05488, methionine synthase Swiss:Q99707 and methylmalonyl-CoA mutase Swiss:P22033. It contains a conserved DxHxxGx(41)SxVx(26)GG motif, which is important for B12 binding [2].
Domain
A, BPF00809Pterin binding enzyme (Pterin_bind)Pterin binding enzymeThis family includes a variety of pterin binding enzymes that all adopt a TIM barrel fold. The family includes dihydropteroate synthase EC:2.5.1.15 as well as a group methyltransferase enzymes including methyltetrahydrofolate, corrinoid iron-sulfur p ...This family includes a variety of pterin binding enzymes that all adopt a TIM barrel fold. The family includes dihydropteroate synthase EC:2.5.1.15 as well as a group methyltransferase enzymes including methyltetrahydrofolate, corrinoid iron-sulfur protein methyltransferase (MeTr) Swiss:Q46389 that catalyses a key step in the Wood-Ljungdahl pathway of carbon dioxide fixation. It transfers the N5-methyl group from methyltetrahydrofolate (CH3-H4folate) to a cob(I)amide centre in another protein, the corrinoid iron-sulfur protein. MeTr is a member of a family of proteins that includes methionine synthase and methanogenic enzymes that activate the methyl group of methyltetra-hydromethano(or -sarcino)pterin [2].
Domain
A, BPF02574Homocysteine S-methyltransferase (S-methyl_trans)Homocysteine S-methyltransferase- Family