alanine dehydrogenase catalyzes the NAD(+)-dependent oxidative deamination of L-alanine to pyruvate, and the reverse reaction, the reductive amination of pyruvate; alanine dehydrogenase catalyzes the reversible oxidative deamination of L-alanine to pyruvate
Alanine dehydrogenase (includes sporulation protein SpoVN) [Amino acid transport and ...
1-347
1.27e-143
Alanine dehydrogenase (includes sporulation protein SpoVN) [Amino acid transport and metabolism]; Alanine dehydrogenase (includes sporulation protein SpoVN) is part of the Pathway/BioSystem: Urea cycle
:
Pssm-ID: 440450 [Multi-domain] Cd Length: 372 Bit Score: 412.10 E-value: 1.27e-143
Alanine dehydrogenase (includes sporulation protein SpoVN) [Amino acid transport and ...
1-347
1.27e-143
Alanine dehydrogenase (includes sporulation protein SpoVN) [Amino acid transport and metabolism]; Alanine dehydrogenase (includes sporulation protein SpoVN) is part of the Pathway/BioSystem: Urea cycle
Pssm-ID: 440450 [Multi-domain] Cd Length: 372 Bit Score: 412.10 E-value: 1.27e-143
Alanine dehydrogenase NAD-binding and catalytic domains; Alanine dehydrogenase (L-AlaDH) ...
1-347
2.66e-138
Alanine dehydrogenase NAD-binding and catalytic domains; Alanine dehydrogenase (L-AlaDH) catalyzes the NAD-dependent conversion of pyruvate to L-alanine via reductive amination. Like formate dehydrogenase and related enzymes, L-AlaDH is comprised of 2 domains connected by a long alpha helical stretch, each resembling a Rossmann fold NAD-binding domain. The NAD-binding domain is inserted within the linear sequence of the more divergent catalytic domain. Ligand binding and active site residues are found in the cleft between the subdomains. L-AlaDH is typically hexameric and is critical in carbon and nitrogen metabolism in micro-organisms.
Pssm-ID: 240630 [Multi-domain] Cd Length: 359 Bit Score: 398.32 E-value: 2.66e-138
alanine dehydrogenase; The family of known L-alanine dehydrogenases (EC 1.4.1.1) includes ...
1-363
1.15e-97
alanine dehydrogenase; The family of known L-alanine dehydrogenases (EC 1.4.1.1) includes representatives from the Proteobacteria, Firmicutes, Cyanobacteria, and Actinobacteria, all with about 50 % identity or better. An outlier to this group in both sequence and gap pattern is the homolog from Helicobacter pylori, an epsilon division Proteobacteria, which must be considered a putative alanine dehydrogenase. In Mycobacterium smegmatis and M. tuberculosis, the enzyme doubles as a glycine dehydrogenase (1.4.1.10), running in the reverse direction (glyoxylate amination to glycine, with conversion of NADH to NAD+). Related proteins include saccharopine dehydrogenase and the N-terminal half of the NAD(P) transhydrogenase alpha subunit. All of these related proteins bind NAD and/or NADP. [Energy metabolism, Amino acids and amines]
Pssm-ID: 129609 [Multi-domain] Cd Length: 370 Bit Score: 295.28 E-value: 1.15e-97
Alanine dehydrogenase (includes sporulation protein SpoVN) [Amino acid transport and ...
1-347
1.27e-143
Alanine dehydrogenase (includes sporulation protein SpoVN) [Amino acid transport and metabolism]; Alanine dehydrogenase (includes sporulation protein SpoVN) is part of the Pathway/BioSystem: Urea cycle
Pssm-ID: 440450 [Multi-domain] Cd Length: 372 Bit Score: 412.10 E-value: 1.27e-143
Alanine dehydrogenase NAD-binding and catalytic domains; Alanine dehydrogenase (L-AlaDH) ...
1-347
2.66e-138
Alanine dehydrogenase NAD-binding and catalytic domains; Alanine dehydrogenase (L-AlaDH) catalyzes the NAD-dependent conversion of pyruvate to L-alanine via reductive amination. Like formate dehydrogenase and related enzymes, L-AlaDH is comprised of 2 domains connected by a long alpha helical stretch, each resembling a Rossmann fold NAD-binding domain. The NAD-binding domain is inserted within the linear sequence of the more divergent catalytic domain. Ligand binding and active site residues are found in the cleft between the subdomains. L-AlaDH is typically hexameric and is critical in carbon and nitrogen metabolism in micro-organisms.
Pssm-ID: 240630 [Multi-domain] Cd Length: 359 Bit Score: 398.32 E-value: 2.66e-138
alanine dehydrogenase; The family of known L-alanine dehydrogenases (EC 1.4.1.1) includes ...
1-363
1.15e-97
alanine dehydrogenase; The family of known L-alanine dehydrogenases (EC 1.4.1.1) includes representatives from the Proteobacteria, Firmicutes, Cyanobacteria, and Actinobacteria, all with about 50 % identity or better. An outlier to this group in both sequence and gap pattern is the homolog from Helicobacter pylori, an epsilon division Proteobacteria, which must be considered a putative alanine dehydrogenase. In Mycobacterium smegmatis and M. tuberculosis, the enzyme doubles as a glycine dehydrogenase (1.4.1.10), running in the reverse direction (glyoxylate amination to glycine, with conversion of NADH to NAD+). Related proteins include saccharopine dehydrogenase and the N-terminal half of the NAD(P) transhydrogenase alpha subunit. All of these related proteins bind NAD and/or NADP. [Energy metabolism, Amino acids and amines]
Pssm-ID: 129609 [Multi-domain] Cd Length: 370 Bit Score: 295.28 E-value: 1.15e-97
Alanine dehydrogenase and related dehydrogenases; Alanine dehydrogenase/Transhydrogenase, such ...
2-310
7.40e-85
Alanine dehydrogenase and related dehydrogenases; Alanine dehydrogenase/Transhydrogenase, such as the hexameric L-alanine dehydrogenase of Phormidium lapideum, contain 2 Rossmann fold-like domains linked by an alpha helical region. Related proteins include Saccharopine Dehydrogenase (SDH), bifunctional lysine ketoglutarate reductase /saccharopine dehydrogenase enzyme, N(5)-(carboxyethyl)ornithine synthase, and Rubrum transdehydrogenase. Alanine dehydrogenase (L-AlaDH) catalyzes the NAD-dependent conversion of pyrucate to L-alanine via reductive amination. Transhydrogenases found in bacterial and inner mitochondrial membranes link NAD(P)(H)-dependent redox reactions to proton translocation. The energy of the proton electrochemical gradient (delta-p), generated by the respiratory electron transport chain, is consumed by transhydrogenase in NAD(P)+ reduction. Transhydrogenase is likely involved in the regulation of the citric acid cycle. Rubrum transhydrogenase has 3 components, dI, dII, and dIII. dII spans the membrane while dI and dIII protrude on the cytoplasmic/matirx side. DI contains 2 domains with Rossmann folds, linked by a long alpha helix, and contains a NAD binding site. Two dI polypeptides (represented in this sub-family) spontaneously form a heterotrimer with one dIII in the absence of dII. In the heterotrimer, both dI chains may bind NAD, but only one is well-ordered. dIII also binds a well-ordered NADP, but in a different orientation than classical Rossmann domains.
Pssm-ID: 240621 [Multi-domain] Cd Length: 317 Bit Score: 260.42 E-value: 7.40e-85
N(5)-(carboxyethyl)ornithine synthase; N(5)-(carboxyethyl)ornithine synthase (ceo_syn) catalyzes the NADP-dependent conversion of N5-(L-1-carboxyethyl)-L-ornithine to L-ornithine + pyruvate. Ornithine plays a key role in the urea cycle, which in mammals is used in arginine biosynthesis, and is a precursor in polyamine synthesis. ceo_syn is related to the NAD-dependent L-alanine dehydrogenases. Like formate dehydrogenase and related enzymes, ceo_syn is comprised of 2 domains connected by a long alpha helical stretch, each resembling a Rossmann fold NAD-binding domain. The NAD-binding domain is inserted within the linear sequence of the more divergent catalytic domain. These ceo_syn proteins have a partially conserved NAD-binding motif and active site residues that are characteristic of related enzymes such as Saccharopine Dehydrogenase.
Pssm-ID: 240658 [Multi-domain] Cd Length: 295 Bit Score: 178.96 E-value: 1.60e-53
Rubrum transdehydrogenase NAD-binding and catalytic domains; Transhydrogenases found in ...
1-320
1.32e-43
Rubrum transdehydrogenase NAD-binding and catalytic domains; Transhydrogenases found in bacterial and inner mitochondrial membranes link NAD(P)(H)-dependent redox reactions to proton translocation. The energy of the proton electrochemical gradient (delta-p), generated by the respiratory electron transport chain, is consumed by transhydrogenase in NAD(P)+ reduction. Transhydrogenase is likely involved in the regulation of the citric acid cycle. Rubrum transhydrogenase has 3 components, dI, dII, and dIII. dII spans the membrane while dI and dIII protrude on the cytoplasmic/matrix side. DI contains 2 domains in Rossmann-like folds, linked by a long alpha helix, and contains a NAD binding site. Two dI polypeptides (represented in this sub-family) spontaneously form a heterotrimer with dIII in the absence of dII. In the heterotrimer, both dI chains may bind NAD, but only one is well-ordered. dIII also binds a well-ordered NADP, but in a different orientation than a classical Rossmann domain.
Pssm-ID: 240629 [Multi-domain] Cd Length: 363 Bit Score: 154.87 E-value: 1.32e-43
Formate/glycerate dehydrogenases, D-specific 2-hydroxy acid dehydrogenases and related ...
3-312
8.03e-33
Formate/glycerate dehydrogenases, D-specific 2-hydroxy acid dehydrogenases and related dehydrogenases; The formate/glycerate dehydrogenase like family contains a diverse group of enzymes such as formate dehydrogenase (FDH), glycerate dehydrogenase (GDH), D-lactate dehydrogenase, L-alanine dehydrogenase, and S-Adenosylhomocysteine hydrolase, that share a common 2-domain structure. Despite often low sequence identity, these proteins typically have a characteristic arrangement of 2 similar domains of the alpha/beta Rossmann fold NAD+ binding form. The NAD(P) binding domain is inserted within the linear sequence of the mostly N-terminal catalytic domain. Structurally, these domains are connected by extended alpha helices and create a cleft in which NAD(P) is bound, primarily to the C-terminal portion of the 2nd (internal) domain. While many members of this family are dimeric, alanine DH is hexameric and phosphoglycerate DH is tetrameric. 2-hydroxyacid dehydrogenases are enzymes that catalyze the conversion of a wide variety of D-2-hydroxy acids to their corresponding keto acids. The general mechanism is (R)-lactate + acceptor to pyruvate + reduced acceptor. Formate dehydrogenase (FDH) catalyzes the NAD+-dependent oxidation of formate ion to carbon dioxide with the concomitant reduction of NAD+ to NADH. FDHs of this family contain no metal ions or prosthetic groups. Catalysis occurs though direct transfer of a hydride ion to NAD+ without the stages of acid-base catalysis typically found in related dehydrogenases.
Pssm-ID: 240631 [Multi-domain] Cd Length: 310 Bit Score: 125.04 E-value: 8.03e-33
Saccharopine Dehydrogenase like proteins; Saccharopine Dehydrogenase (SDH) and related ...
2-314
7.47e-18
Saccharopine Dehydrogenase like proteins; Saccharopine Dehydrogenase (SDH) and related proteins, including bifunctional lysine ketoglutarate reductase/SDH enzymes and N(5)-(carboxyethyl)ornithine synthases. SDH catalyzes the final step in the reversible NAD-dependent oxidative deamination of saccharopine to alpha-ketoglutarate and lysine, in the alpha-aminoadipate pathway of L-lysine biosynthesis. SDH is structurally related to formate dehydrogenase and similar enzymes, having a 2-domain structure in which a Rossmann-fold NAD(P)-binding domain is inserted within the linear sequence of a catalytic domain of related structure. Bifunctional lysine ketoglutarate reductase/SDH protein is a pair of enzymes linked on a single polypeptide chain that catalyze the initial, consecutive steps of lysine degradation. These proteins are related to the 2-domain saccharopine dehydrogenases.
Pssm-ID: 240623 [Multi-domain] Cd Length: 319 Bit Score: 83.44 E-value: 7.47e-18
bifunctional lysine ketoglutarate reductase /saccharopine dehydrogenase enzyme; Bifunctional lysine ketoglutarate reductase /saccharopine dehydrogenase protein is a pair of enzymes linked on a single polypeptide chain that catalyze the initial, consecutive steps of lysine degradation. These proteins are related to the 2-domain saccharopine dehydrogenases. Along with formate dehydrogenase and similar enzymes, SDH consists paired domains resembling Rossmann folds in which the NAD-binding domain is inserted within the linear sequence of the catalytic domain. In this bifunctional enzyme, the LKR domain is N-terminal of the SDH domain. These proteins have a close match to the active site motif of SDHs, and an NAD-binding site motif that is a partial match to that found in SDH and other FDH-related proteins.
Pssm-ID: 240665 [Multi-domain] Cd Length: 433 Bit Score: 67.97 E-value: 2.28e-12
Saccharopine Dehydrogenase NAD-binding and catalytic domains; Saccharopine Dehydrogenase (SDH) ...
5-321
2.88e-12
Saccharopine Dehydrogenase NAD-binding and catalytic domains; Saccharopine Dehydrogenase (SDH) catalyzes the final step in the reversible NAD-dependent oxidative deamination of saccharopine to alpha-ketoglutarate and lysine, in the alpha-aminoadipate pathway of L-lysine biosynthesis. SHD is structurally related to formate dehydrogenase and similar enzymes, having a 2-domain structure in which a Rossmann-fold NAD(P)-binding domain is inserted within the linear sequence of a catalytic domain of related structure.
Pssm-ID: 240664 [Multi-domain] Cd Length: 351 Bit Score: 67.26 E-value: 2.88e-12
Formate/glycerate and related dehydrogenases of the D-specific 2-hydroxy acid dehydrogenase ...
165-261
9.00e-05
Formate/glycerate and related dehydrogenases of the D-specific 2-hydroxy acid dehydrogenase family; Formate dehydrogenase, D-specific 2-hydroxy acid dehydrogenase, Phosphoglycerate Dehydrogenase, Lactate dehydrogenase, Thermostable Phosphite Dehydrogenase, and Hydroxy(phenyl)pyruvate reductase, among others, share a characteristic arrangement of 2 similar subdomains of the alpha/beta Rossmann fold NAD+ binding form. 2-hydroxyacid dehydrogenases are enzymes that catalyze the conversion of a wide variety of D-2-hydroxy acids to their corresponding keto acids. The general mechanism is (R)-lactate + acceptor to pyruvate + reduced acceptor. 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. Formate dehydrogenase (FDH) catalyzes the NAD+-dependent oxidation of formate ion to carbon dioxide with the concomitant reduction of NAD+ to NADH. FDHs of this family contain no metal ions or prosthetic groups. Catalysis occurs though direct transfer of hydride ion to NAD+ without the stages of acid-base catalysis typically found in related dehydrogenases. FDHs are found in all methylotrophic microorganisms in energy production and in the stress responses of plants. Formate/glycerate and related dehydrogenases of the D-specific 2-hydroxyacid dehydrogenase superfamily include groups such as formate dehydrogenase, glycerate dehydrogenase, L-alanine dehydrogenase, and S-Adenosylhomocysteine Hydrolase, among others. While many members of this family are dimeric, alanine DH is hexameric and phosphoglycerate DH is tetrameric.
Pssm-ID: 240622 [Multi-domain] Cd Length: 302 Bit Score: 43.77 E-value: 9.00e-05
D-isomer specific 2-hydroxyacid dehydrogenase, NAD binding domain; This domain is inserted ...
165-261
3.14e-04
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: 41.33 E-value: 3.14e-04
Phosphoglycerate dehydrogenase or related dehydrogenase [Coenzyme transport and metabolism]; ...
165-261
5.14e-04
Phosphoglycerate dehydrogenase or related dehydrogenase [Coenzyme transport and metabolism]; Phosphoglycerate dehydrogenase or related dehydrogenase is part of the Pathway/BioSystem: Serine biosynthesis
Pssm-ID: 439881 [Multi-domain] Cd Length: 314 Bit Score: 41.72 E-value: 5.14e-04
Putative D-isomer specific 2-hydroxyacid dehydrogenase; 2-Hydroxyacid dehydrogenases catalyze ...
163-260
1.42e-03
Putative D-isomer specific 2-hydroxyacid dehydrogenase; 2-Hydroxyacid dehydrogenases catalyze the conversion of a wide variety of D-2-hydroxy acids to their corresponding keto acids. The general mechanism is (R)-lactate + acceptor to pyruvate + reduced acceptor. Formate/glycerate and related dehydrogenases of the D-specific 2-hydroxyacid dehydrogenase superfamily include groups such as formate dehydrogenase, glycerate dehydrogenase, 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 subdomains but with a tandem arrangement of the catalytic and NAD-binding subdomains in the linear sequence. While many members of this family are dimeric, alanine DH is hexameric and phosphoglycerate DH is tetrameric. Formate dehydrogenase (FDH) catalyzes the NAD+-dependent oxidation of formate ion to carbon dioxide with the concomitant reduction of NAD+ to NADH. FDHs of this family contain no metal ions or prosthetic groups. Catalysis occurs though direct transfer of the hydride ion to NAD+ without the stages of acid-base catalysis typically found in related dehydrogenases. FDHs are found in all methylotrophic microorganisms in energy production and in the stress responses of plants.
Pssm-ID: 240625 [Multi-domain] Cd Length: 313 Bit Score: 40.20 E-value: 1.42e-03
NADP binding domain of methylene-tetrahydrofolate dehydrogenase/cyclohydrolase; NADP binding ...
137-260
3.46e-03
NADP binding domain of methylene-tetrahydrofolate dehydrogenase/cyclohydrolase; NADP binding domain of the Methylene-Tetrahydrofolate Dehydrogenase/cyclohydrolase (m-THF DH/cyclohydrolase) bifunctional enzyme. Tetrahydrofolate is a versatile carrier of activated one-carbon units. The major one-carbon folate donors are N-5 methyltetrahydrofolate, N5,N10-m-THF, and N10-formayltetrahydrofolate. The oxidation of metabolic intermediate m-THF to m-THF requires the enzyme m-THF DH. In addition, most DHs also have an associated cyclohydrolase activity which catalyzes its hydrolysis to N10-formyltetrahydrofolate. m-THF DH is typically found as part of a multifunctional protein in eukaryotes. NADP-dependent m-THF DH in mammals, birds and yeast are components of a trifunctional enzyme with DH, cyclohydrolase, and synthetase activities. Certain eukaryotic cells also contain homodimeric bifunctional DH/cyclodrolase form. In bacteria, monofucntional DH, as well as bifunctional m-THF m-THF DHm-THF DHDH/cyclodrolase are found. In addition, yeast (S. cerevisiae) also express an monofunctional DH. This family contains the bifunctional DH/cyclohydrolase. M-THF DH, like other amino acid DH-like NAD(P)-binding domains, is a member of the Rossmann fold superfamily which includes glutamate, leucine, and phenylalanine DHs, m-THF DH, methylene-tetrahydromethanopterin DH, m-THF DH/cyclohydrolase, Shikimate DH-like proteins, malate oxidoreductases, and glutamyl tRNA reductase. Amino acid DHs catalyze the deamination of amino acids to keto acids with NAD(P)+ as a cofactor. The NAD(P)-binding Rossmann fold superfamily includes a wide variety of protein families including NAD(P)- binding domains of alcohol DHs, tyrosine-dependent oxidoreductases, glyceraldehyde-3-phosphate DH, lactate/malate DHs, formate/glycerate DHs, siroheme synthases, 6-phosphogluconate DH, amino acid DHs, repressor rex, NAD-binding potassium channel domain, CoA-binding, and ornithine cyclodeaminase-like domains.
Pssm-ID: 133448 Cd Length: 168 Bit Score: 37.92 E-value: 3.46e-03
(R)-2-Hydroxyglutarate Dehydrogenase and related dehydrogenases, NAD-binding and catalytic ...
165-261
4.27e-03
(R)-2-Hydroxyglutarate Dehydrogenase and related dehydrogenases, NAD-binding and catalytic domains; (R)-2-hydroxyglutarate dehydrogenase (HGDH) catalyzes the NAD-dependent reduction of 2-oxoglutarate to (R)-2-hydroxyglutarate. HGDH is a member of the D-2-hydroxyacid NAD(+)-dependent dehydrogenase family; 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.
Pssm-ID: 240660 Cd Length: 330 Bit Score: 38.81 E-value: 4.27e-03
Medium chain reductase/dehydrogenase (MDR)/zinc-dependent alcohol dehydrogenase-like family; ...
153-194
4.75e-03
Medium chain reductase/dehydrogenase (MDR)/zinc-dependent alcohol dehydrogenase-like family; The medium chain reductase/dehydrogenases (MDR)/zinc-dependent alcohol dehydrogenase-like family, which contains the zinc-dependent alcohol dehydrogenase (ADH-Zn) and related proteins, is a diverse group of proteins related to the first identified member, class I mammalian ADH. MDRs display a broad range of activities and are distinguished from the smaller short chain dehydrogenases (~ 250 amino acids vs. the ~ 350 amino acids of the MDR). The MDR proteins have 2 domains: a C-terminal NAD(P) binding-Rossmann fold domain of a beta-alpha form and an N-terminal catalytic domain with distant homology to GroES. The MDR group contains a host of activities, including the founding alcohol dehydrogenase (ADH) , quinone reductase, sorbitol dehydrogenase, formaldehyde dehydrogenase, butanediol DH, ketose reductase, cinnamyl reductase, and numerous others. The zinc-dependent alcohol dehydrogenases (ADHs) catalyze the NAD(P)(H)-dependent interconversion of alcohols to aldehydes or ketones. ADH-like proteins typically form dimers (typically higher plants, mammals) or tetramers (yeast, bacteria), and generally have 2 tightly bound zinc atoms per subunit, a catalytic zinc at the active site and a structural zinc in a lobe of the catalytic domain. The active site zinc is coordinated by a histidine, two cysteines, and a water molecule. The second zinc seems to play a structural role, affects subunit interactions, and is typically coordinated by 4 cysteines. Other MDR members have only a catalytic zinc, and some contain no coordinated zinc.
Pssm-ID: 176178 [Multi-domain] Cd Length: 271 Bit Score: 38.46 E-value: 4.75e-03
Saccharopine dehydrogenase NADP binding domain; This family contains the NADP binding domain ...
165-231
5.06e-03
Saccharopine dehydrogenase NADP binding domain; This family contains the NADP binding domain of saccharopine dehydrogenase. In some organizms this enzyme is found as a bifunctional polypeptide with lysine ketoglutarate reductase. The saccharopine dehydrogenase can also function as a saccharopine reductase.
Pssm-ID: 397480 [Multi-domain] Cd Length: 120 Bit Score: 36.80 E-value: 5.06e-03
Alcohol dehydrogenases of the MDR family; This group contains members identified as related to ...
165-194
7.36e-03
Alcohol dehydrogenases of the MDR family; This group contains members identified as related to zinc-dependent alcohol dehydrogenase and other members of the MDR family. The medium chain dehydrogenases/reductase (MDR)/zinc-dependent alcohol dehydrogenase-like family, which contains the zinc-dependent alcohol dehydrogenase (ADH-Zn) and related proteins, is a diverse group of proteins related to the first identified member, class I mammalian ADH. MDRs display a broad range of activities and are distinguished from the smaller short chain dehydrogenases (~ 250 amino acids vs. the ~ 350 amino acids of the MDR). The MDR proteins have 2 domains: a C-terminal NAD(P)-binding Rossmann fold domain of a beta-alpha form and an N-terminal catalytic domain with distant homology to GroES. The MDR group includes various activities, including the founding alcohol dehydrogenase (ADH), quinone reductase, sorbitol dehydrogenase, formaldehyde dehydrogenase, butanediol DH, ketose reductase, cinnamyl reductase, and numerous others. The zinc-dependent alcohol dehydrogenases (ADHs) catalyze the NAD(P)(H)-dependent interconversion of alcohols to aldehydes or ketones. Active site zinc has a catalytic role, while structural zinc aids in stability. ADH-like proteins typically form dimers (typically higher plants, mammals) or tetramers (yeast, bacteria), and generally have 2 tightly bound zinc atoms per subunit. The active site zinc is coordinated by a histidine, two cysteines, and a water molecule. The second zinc seems to play a structural role, affects subunit interactions, and is typically coordinated by 4 cysteines.
Pssm-ID: 176222 [Multi-domain] Cd Length: 337 Bit Score: 37.94 E-value: 7.36e-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.
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