NADP-dependent ketol-acid reductoisomerase catalyzes the conversion of 2-(S)-acetolactate (2SAL) into (R)-dihydroxyisovalerate (RDHIV), the second step in the biosynthesis of the branched-chain amino acids (BCAAs) valine, leucine and isoleucine
Ketol-acid reductoisomerase [Amino acid transport and metabolism, Coenzyme transport and ...
22-353
3.34e-172
Ketol-acid reductoisomerase [Amino acid transport and metabolism, Coenzyme transport and metabolism]; Ketol-acid reductoisomerase is part of the Pathway/BioSystem: Isoleucine, leucine, valine biosynthesis
Pssm-ID: 439829 [Multi-domain] Cd Length: 328 Bit Score: 487.26 E-value: 3.34e-172
ketol-acid reductoisomerase; This is the second enzyme in the parallel isoleucine-valine ...
35-369
1.11e-170
ketol-acid reductoisomerase; This is the second enzyme in the parallel isoleucine-valine biosynthetic pathway [Amino acid biosynthesis, Pyruvate family]
Pssm-ID: 273093 [Multi-domain] Cd Length: 314 Bit Score: 483.03 E-value: 1.11e-170
Acetohydroxy acid isomeroreductase, NADPH-binding domain; Acetohydroxy acid isomeroreductase catalyzes the conversion of acetohydroxy acids into dihydroxy valerates. This reaction is the second in the synthetic pathway of the essential branched side chain amino acids valine and isoleucine. This N-terminal region of the enzyme carries the binding-site for NADPH. The active-site for enzymatic activity lies in the C-terminal part, IlvC, pfam01450.
Pssm-ID: 285265 Cd Length: 165 Bit Score: 234.75 E-value: 1.50e-75
S-Adenosylhomocysteine Hydrolase, NAD-binding and catalytic domains; S-adenosyl-L-homocysteine ...
37-139
2.66e-03
S-Adenosylhomocysteine Hydrolase, NAD-binding and catalytic domains; S-adenosyl-L-homocysteine hydrolase (SAHH, AdoHycase) catalyzes the hydrolysis of S-adenosyl-L-homocysteine (AdoHyc) to form adenosine (Ado) and homocysteine (Hcy). The equilibrium lies far on the side of AdoHyc synthesis, but in nature the removal of Ado and Hyc is sufficiently fast, so that the net reaction is in the direction of hydrolysis. Since AdoHyc is a potent inhibitor of S-adenosyl-L-methionine dependent methyltransferases, AdoHycase plays a critical role in the modulation of the activity of various methyltransferases. The enzyme forms homotetramers, with each monomer binding one molecule of NAD+.
Pssm-ID: 240619 [Multi-domain] Cd Length: 402 Bit Score: 40.13 E-value: 2.66e-03
Ketol-acid reductoisomerase [Amino acid transport and metabolism, Coenzyme transport and ...
22-353
3.34e-172
Ketol-acid reductoisomerase [Amino acid transport and metabolism, Coenzyme transport and metabolism]; Ketol-acid reductoisomerase is part of the Pathway/BioSystem: Isoleucine, leucine, valine biosynthesis
Pssm-ID: 439829 [Multi-domain] Cd Length: 328 Bit Score: 487.26 E-value: 3.34e-172
ketol-acid reductoisomerase; This is the second enzyme in the parallel isoleucine-valine ...
35-369
1.11e-170
ketol-acid reductoisomerase; This is the second enzyme in the parallel isoleucine-valine biosynthetic pathway [Amino acid biosynthesis, Pyruvate family]
Pssm-ID: 273093 [Multi-domain] Cd Length: 314 Bit Score: 483.03 E-value: 1.11e-170
Acetohydroxy acid isomeroreductase, NADPH-binding domain; Acetohydroxy acid isomeroreductase catalyzes the conversion of acetohydroxy acids into dihydroxy valerates. This reaction is the second in the synthetic pathway of the essential branched side chain amino acids valine and isoleucine. This N-terminal region of the enzyme carries the binding-site for NADPH. The active-site for enzymatic activity lies in the C-terminal part, IlvC, pfam01450.
Pssm-ID: 285265 Cd Length: 165 Bit Score: 234.75 E-value: 1.50e-75
Acetohydroxy acid isomeroreductase, catalytic domain; Acetohydroxy acid isomeroreductase catalyzes the conversion of acetohydroxy acids into dihydroxy valerates. This reaction is the second in the synthetic pathway of the essential branched side chain amino acids valine and isoleucine.
Pssm-ID: 460215 [Multi-domain] Cd Length: 138 Bit Score: 107.94 E-value: 6.87e-28
Acetohydroxy acid isomeroreductase, catalytic domain; Acetohydroxy acid isomeroreductase catalyzes the conversion of acetohydroxy acids into dihydroxy valerates. This reaction is the second in the synthetic pathway of the essential branched side chain amino acids valine and isoleucine.
Pssm-ID: 460215 [Multi-domain] Cd Length: 138 Bit Score: 84.44 E-value: 1.77e-19
D-isomer specific 2-hydroxyacid dehydrogenase, NAD binding domain; This domain is inserted ...
18-128
1.82e-03
D-isomer specific 2-hydroxyacid dehydrogenase, NAD binding domain; This domain is inserted into the catalytic domain, the large dehydrogenase and D-lactate dehydrogenase families in SCOP. N-terminal portion of which is represented by family pfam00389.
Pssm-ID: 427007 [Multi-domain] Cd Length: 178 Bit Score: 39.40 E-value: 1.82e-03
S-Adenosylhomocysteine Hydrolase, NAD-binding and catalytic domains; S-adenosyl-L-homocysteine ...
37-139
2.66e-03
S-Adenosylhomocysteine Hydrolase, NAD-binding and catalytic domains; S-adenosyl-L-homocysteine hydrolase (SAHH, AdoHycase) catalyzes the hydrolysis of S-adenosyl-L-homocysteine (AdoHyc) to form adenosine (Ado) and homocysteine (Hcy). The equilibrium lies far on the side of AdoHyc synthesis, but in nature the removal of Ado and Hyc is sufficiently fast, so that the net reaction is in the direction of hydrolysis. Since AdoHyc is a potent inhibitor of S-adenosyl-L-methionine dependent methyltransferases, AdoHycase plays a critical role in the modulation of the activity of various methyltransferases. The enzyme forms homotetramers, with each monomer binding one molecule of NAD+.
Pssm-ID: 240619 [Multi-domain] Cd Length: 402 Bit Score: 40.13 E-value: 2.66e-03
Putative D-3-Phosphoglycerate Dehydrogenases, NAD-binding and catalytic domains; ...
18-128
4.60e-03
Putative D-3-Phosphoglycerate Dehydrogenases, NAD-binding and catalytic domains; Phosphoglycerate dehydrogenases (PGDHs) catalyze the initial step in the biosynthesis of L-serine from D-3-phosphoglycerate. PGDHs come in 3 distinct structural forms, with this first group being related to 2-hydroxy acid dehydrogenases, sharing structural similarity to formate and glycerate dehydrogenases of the D-specific 2-hydroxyacid dehydrogenase superfamily, which also include groups such as L-alanine dehydrogenase and S-adenosylhomocysteine hydrolase. Despite often low sequence identity, these proteins typically have a characteristic arrangement of 2 similar subdomains of the alpha/beta Rossmann fold NAD+ binding form. The NAD+ binding domain is inserted within the linear sequence of the mostly N-terminal catalytic domain, which has a similar domain structure to the internal NAD binding domain. Structurally, these domains are connected by extended alpha helices and create a cleft in which NAD is bound, primarily to the C-terminal portion of the 2nd (internal) domain. Some related proteins have similar structural subdomain but with a tandem arrangement of the catalytic and NAD-binding subdomains in the linear sequence. Many, not all, members of this family are dimeric.
Pssm-ID: 240651 [Multi-domain] Cd Length: 305 Bit Score: 39.08 E-value: 4.60e-03
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.
of the residues that compose this conserved feature have been mapped to the query sequence.
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Functional characterization of the conserved domain architecture found on the query.
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(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
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