hypothetical protein N692_04330 [Lactiplantibacillus plantarum EGD-AQ4]
Protein Classification
uroporphyrinogen decarboxylase/cobalamine-independent methonine synthase family protein; methionine synthase( domain architecture ID 10792773)
uroporphyrinogen decarboxylase (URO-D)/cobalamine-independent methonine synthase (CIMS) family protein, similar to URO-D that decarboxylates the four acetate side chains of uroporphyrinogen III (uro-III) to create coproporphyrinogen III, an important branching point of the tetrapyrrole biosynthetic pathway; vitamin-B12 dependent methionine synthase catalyzes the transfer of a methyl group from methyl-cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine, then remethylates the cofactor using methyltetrahydrofolate
CIMS - Cobalamine-independent methonine synthase, or MetE, C-terminal domain_like. Many ...
13-363
6.85e-133
CIMS - Cobalamine-independent methonine synthase, or MetE, C-terminal domain_like. Many members have been characterized as 5-methyltetrahydropteroyltriglutamate-homocysteine methyltransferases, EC:2.1.1.14, mostly from bacteria and plants. This enzyme catalyses the last step in the production of methionine by transferring a methyl group from 5-methyltetrahydrofolate to L-homocysteine without using an intermediate methyl carrier. The active enzyme has a dual (beta-alpha)8-barrel structure, and this model covers the C-terminal barrel, and a few single-barrel sequences most similar to the C-terminal barrel. It is assumed that the homologous N-terminal barrel has evolved from the C-terminus via gene duplication and has subsequently lost binding sites, and it seems as if the two barrels forming the active enzyme may sometimes reside on different polypeptides. The C-terminal domain incorporates the Zinc ion, which binds and activates homocysteine. Sidechains from both barrels contribute to the binding of the folate substrate.
Pssm-ID: 239427 [Multi-domain] Cd Length: 332 Bit Score: 383.12 E-value: 6.85e-133
Methionine synthase II (cobalamin-independent) [Amino acid transport and metabolism]; ...
12-371
1.87e-107
Methionine synthase II (cobalamin-independent) [Amino acid transport and metabolism]; Methionine synthase II (cobalamin-independent) is part of the Pathway/BioSystem: Methionine biosynthesis
Pssm-ID: 440385 [Multi-domain] Cd Length: 325 Bit Score: 318.24 E-value: 1.87e-107
Cobalamin-independent synthase, Catalytic domain; This is a family of vitamin-B12 independent ...
16-362
2.27e-15
Cobalamin-independent synthase, Catalytic domain; This is a family of vitamin-B12 independent methionine synthases or 5-methyltetrahydropteroyltriglutamate--homocysteine methyltransferases, EC:2.1.1.14 from bacteria and plants. Plants are the only higher eukaryotes that have the required enzymes for methionine synthesis. This enzyme catalyzes the last step in the production of methionine by transferring a methyl group from 5-methyltetrahydrofolate to homocysteine. The aligned region makes up the carboxy region of the approximately 750 amino acid protein except in some hypothetical archaeal proteins present in the family, where this region corresponds to the entire length. This domain contains the catalytic residues of the enzyme.
Pssm-ID: 366771 [Multi-domain] Cd Length: 323 Bit Score: 75.93 E-value: 2.27e-15
CIMS - Cobalamine-independent methonine synthase, or MetE, C-terminal domain_like. Many ...
13-363
6.85e-133
CIMS - Cobalamine-independent methonine synthase, or MetE, C-terminal domain_like. Many members have been characterized as 5-methyltetrahydropteroyltriglutamate-homocysteine methyltransferases, EC:2.1.1.14, mostly from bacteria and plants. This enzyme catalyses the last step in the production of methionine by transferring a methyl group from 5-methyltetrahydrofolate to L-homocysteine without using an intermediate methyl carrier. The active enzyme has a dual (beta-alpha)8-barrel structure, and this model covers the C-terminal barrel, and a few single-barrel sequences most similar to the C-terminal barrel. It is assumed that the homologous N-terminal barrel has evolved from the C-terminus via gene duplication and has subsequently lost binding sites, and it seems as if the two barrels forming the active enzyme may sometimes reside on different polypeptides. The C-terminal domain incorporates the Zinc ion, which binds and activates homocysteine. Sidechains from both barrels contribute to the binding of the folate substrate.
Pssm-ID: 239427 [Multi-domain] Cd Length: 332 Bit Score: 383.12 E-value: 6.85e-133
Methionine synthase II (cobalamin-independent) [Amino acid transport and metabolism]; ...
12-371
1.87e-107
Methionine synthase II (cobalamin-independent) [Amino acid transport and metabolism]; Methionine synthase II (cobalamin-independent) is part of the Pathway/BioSystem: Methionine biosynthesis
Pssm-ID: 440385 [Multi-domain] Cd Length: 325 Bit Score: 318.24 E-value: 1.87e-107
Cobalamin-independent synthase, Catalytic domain; This is a family of vitamin-B12 independent ...
16-362
2.27e-15
Cobalamin-independent synthase, Catalytic domain; This is a family of vitamin-B12 independent methionine synthases or 5-methyltetrahydropteroyltriglutamate--homocysteine methyltransferases, EC:2.1.1.14 from bacteria and plants. Plants are the only higher eukaryotes that have the required enzymes for methionine synthesis. This enzyme catalyzes the last step in the production of methionine by transferring a methyl group from 5-methyltetrahydrofolate to homocysteine. The aligned region makes up the carboxy region of the approximately 750 amino acid protein except in some hypothetical archaeal proteins present in the family, where this region corresponds to the entire length. This domain contains the catalytic residues of the enzyme.
Pssm-ID: 366771 [Multi-domain] Cd Length: 323 Bit Score: 75.93 E-value: 2.27e-15
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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