Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyD-lactate/D-glycerate dehydrogenase-like 8056166 4000099 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyD-2-hydroxyacid dehydrogenase-like 8056167 3000044 SCOP2 (2022-06-29)
BSCOP2B SuperfamilyD-2-hydroxyacid dehydrogenase-like 8056167 3000044 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
A2-Hacid_dh_Ce1j49A1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: 2-Hacid_dh_CECOD (1.6)
A2-Hacid_dhe1j49A2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: Formate/glycerate dehydrogenase catalytic domain-likeF: 2-Hacid_dhECOD (1.6)
B2-Hacid_dh_Ce1j49B1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: 2-Hacid_dh_CECOD (1.6)
B2-Hacid_dhe1j49B2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: Formate/glycerate dehydrogenase catalytic domain-likeF: 2-Hacid_dhECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (4.3.0)
B3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF02826D-isomer specific 2-hydroxyacid dehydrogenase, NAD binding domain (2-Hacid_dh_C)D-isomer specific 2-hydroxyacid dehydrogenase, NAD binding domainThis 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 Pfam:PF00389.Domain
A, B
PF00389D-isomer specific 2-hydroxyacid dehydrogenase, catalytic domain (2-Hacid_dh)D-isomer specific 2-hydroxyacid dehydrogenase, catalytic domainThis family represents the largest portion of the catalytic domain of 2-hydroxyacid dehydrogenases as the NAD binding domain is inserted within the structural domain.Domain

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
D-lactate dehydrogenase  M-CSA #576

D -Lactate dehydrogenase from Lactobacillus bulgaricus, a homodimer with 332 amino acid, acts at the last step of the glycolytic pathway under anaerobic conditions, allowing re-oxidation of NAD, which is necessary for glycolysis. The enzyme catalyses the NAD-dependent conversion of pyruvate into the D -isomer of lactic acid. The reaction is reversible: pyruvate reduction (the forward reaction) shows a maximum rate at pH 7.5 and D-lactate oxidation (the inverse reaction) at pH 8.0. The reaction leading to the other enantiomer, L-lactic acid, is catalysed by another enzyme, L-lactate dehydrogenase (L-LDH). While L-LDH has a wide occurrence in nature, D-LDH is found only in invertebrates, lower fungi and prokaryotic organisms. Lactic bacteria possess either one or both enzymes. In Lactobacillus bulgaricus, commonly used in the dairy industry for the production of yoghurt, more than 90% of the pyruvate is converted into D-lactate.

Defined by 4 residues: ARG:A-236ASP:A-260GLU:A-265HIS:A-297
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