methylenetetrahydrofolate reductase catalyzes NADH-dependent reduction of 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate using FAD as a cofactor
Methylenetetrahydrofolate reductase (MTHFR). 5,10-Methylenetetrahydrofolate is reduced to ...
73-644
0e+00
Methylenetetrahydrofolate reductase (MTHFR). 5,10-Methylenetetrahydrofolate is reduced to 5-methyltetrahydrofolate by methylenetetrahydrofolate reductase, a cytoplasmic, NAD(P)-dependent enzyme. 5-methyltetrahydrofolate is utilized by methionine synthase to convert homocysteine to methionine. The enzymatic mechanism is a ping-pong bi-bi mechanism, in which NAD(P)+ release precedes the binding of methylenetetrahydrofolate and the acceptor is free FAD. The family includes the 5,10-methylenetetrahydrofolate reductase EC:1.7.99.5 from prokaryotes and methylenetetrahydrofolate reductase EC: 1.5.1.20 from eukaryotes. The bacterial enzyme is a homotetramer and NADH is the preferred reductant while the eukaryotic enzyme is a homodimer and NADPH is the preferred reductant. In humans, there are several clinically significant mutations in MTHFR that result in hyperhomocysteinemia, which is a risk factor for the development of cardiovascular disease.
The actual alignment was detected with superfamily member PLN02540:
Pssm-ID: 444783 Cd Length: 565 Bit Score: 619.44 E-value: 0e+00
Methylenetetrahydrofolate reductase; This family includes the 5,10-methylenetetrahydrofolate ...
61-350
4.65e-155
Methylenetetrahydrofolate reductase; This family includes the 5,10-methylenetetrahydrofolate reductase EC:1.7.99.5 from bacteria and methylenetetrahydrofolate reductase EC: 1.5.1.20 from eukaryotes. The structure for this domain is known to be a TIM barrel.
Pssm-ID: 396687 Cd Length: 287 Bit Score: 448.69 E-value: 4.65e-155
methylenetetrahydrofolate reductase, eukaryotic type; The enzyme activities ...
72-352
7.94e-114
methylenetetrahydrofolate reductase, eukaryotic type; The enzyme activities methylenetetrahydrofolate reductase (EC 1.5.1.20) and 5,10-methylenetetrahydrofolate reductase (FADH) (EC 1.7.99.5) differ in that 1.5.1.20 (assigned in many eukaryotes) is defined to use NADP+ as an acceptor, while 1.7.99.5 (assigned in many bacteria) is flexible with respect to the acceptor; both convert 5-methyltetrahydrofolate to 5,10-methylenetetrahydrofolate. From a larger set of proteins assigned as 1.5.1.20 and 1.7.99.5, this model describes the subset of proteins found in eukaryotes and designated 1.5.1.20. This protein is an FAD-containing flavoprotein. [Biosynthesis of cofactors, prosthetic groups, and carriers, Folic acid]
Pssm-ID: 129760 Cd Length: 281 Bit Score: 342.87 E-value: 7.94e-114
Methylenetetrahydrofolate reductase (MTHFR). 5,10-Methylenetetrahydrofolate is reduced to ...
73-349
1.39e-109
Methylenetetrahydrofolate reductase (MTHFR). 5,10-Methylenetetrahydrofolate is reduced to 5-methyltetrahydrofolate by methylenetetrahydrofolate reductase, a cytoplasmic, NAD(P)-dependent enzyme. 5-methyltetrahydrofolate is utilized by methionine synthase to convert homocysteine to methionine. The enzymatic mechanism is a ping-pong bi-bi mechanism, in which NAD(P)+ release precedes the binding of methylenetetrahydrofolate and the acceptor is free FAD. The family includes the 5,10-methylenetetrahydrofolate reductase EC:1.7.99.5 from prokaryotes and methylenetetrahydrofolate reductase EC: 1.5.1.20 from eukaryotes. The bacterial enzyme is a homotetramer and NADH is the preferred reductant while the eukaryotic enzyme is a homodimer and NADPH is the preferred reductant. In humans, there are several clinically significant mutations in MTHFR that result in hyperhomocysteinemia, which is a risk factor for the development of cardiovascular disease.
Pssm-ID: 238299 Cd Length: 274 Bit Score: 331.50 E-value: 1.39e-109
Methylenetetrahydrofolate reductase; This family includes the 5,10-methylenetetrahydrofolate ...
61-350
4.65e-155
Methylenetetrahydrofolate reductase; This family includes the 5,10-methylenetetrahydrofolate reductase EC:1.7.99.5 from bacteria and methylenetetrahydrofolate reductase EC: 1.5.1.20 from eukaryotes. The structure for this domain is known to be a TIM barrel.
Pssm-ID: 396687 Cd Length: 287 Bit Score: 448.69 E-value: 4.65e-155
methylenetetrahydrofolate reductase, eukaryotic type; The enzyme activities ...
72-352
7.94e-114
methylenetetrahydrofolate reductase, eukaryotic type; The enzyme activities methylenetetrahydrofolate reductase (EC 1.5.1.20) and 5,10-methylenetetrahydrofolate reductase (FADH) (EC 1.7.99.5) differ in that 1.5.1.20 (assigned in many eukaryotes) is defined to use NADP+ as an acceptor, while 1.7.99.5 (assigned in many bacteria) is flexible with respect to the acceptor; both convert 5-methyltetrahydrofolate to 5,10-methylenetetrahydrofolate. From a larger set of proteins assigned as 1.5.1.20 and 1.7.99.5, this model describes the subset of proteins found in eukaryotes and designated 1.5.1.20. This protein is an FAD-containing flavoprotein. [Biosynthesis of cofactors, prosthetic groups, and carriers, Folic acid]
Pssm-ID: 129760 Cd Length: 281 Bit Score: 342.87 E-value: 7.94e-114
Methylenetetrahydrofolate reductase (MTHFR). 5,10-Methylenetetrahydrofolate is reduced to ...
73-349
1.39e-109
Methylenetetrahydrofolate reductase (MTHFR). 5,10-Methylenetetrahydrofolate is reduced to 5-methyltetrahydrofolate by methylenetetrahydrofolate reductase, a cytoplasmic, NAD(P)-dependent enzyme. 5-methyltetrahydrofolate is utilized by methionine synthase to convert homocysteine to methionine. The enzymatic mechanism is a ping-pong bi-bi mechanism, in which NAD(P)+ release precedes the binding of methylenetetrahydrofolate and the acceptor is free FAD. The family includes the 5,10-methylenetetrahydrofolate reductase EC:1.7.99.5 from prokaryotes and methylenetetrahydrofolate reductase EC: 1.5.1.20 from eukaryotes. The bacterial enzyme is a homotetramer and NADH is the preferred reductant while the eukaryotic enzyme is a homodimer and NADPH is the preferred reductant. In humans, there are several clinically significant mutations in MTHFR that result in hyperhomocysteinemia, which is a risk factor for the development of cardiovascular disease.
Pssm-ID: 238299 Cd Length: 274 Bit Score: 331.50 E-value: 1.39e-109
5,10-methylenetetrahydrofolate reductase, prokaryotic form; The enzyme activities ...
73-350
2.07e-85
5,10-methylenetetrahydrofolate reductase, prokaryotic form; The enzyme activities methylenetetrahydrofolate reductase (EC 1.5.1.20) and 5,10-methylenetetrahydrofolate reductase (FADH) (EC 1.7.99.5) differ in that 1.5.1.20 (assigned in many eukaryotes) is defined to use NADP+ as an acceptor, while 1.7.99.5 (assigned in many bacteria) is flexible with respect to the acceptor; both convert 5-methyltetrahydrofolate to 5,10-methylenetetrahydrofolate. From a larger set of proteins assigned as 1.5.1.20 and 1.7.99.5, this model describes the subset of proteins found in bacteria, and currently designated 1.7.99.5. This protein is an FAD-containing flavoprotein. [Amino acid biosynthesis, Aspartate family]
Pssm-ID: 273212 Cd Length: 272 Bit Score: 269.12 E-value: 2.07e-85
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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