Annotations: 1LDM

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ldma1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	LDH N-terminal domain-like	Lactate dehydrogenase	spiny dogfish (Squalus acanthias ) [TaxId: 7797 ],	SCOPe (2.08)
A	d1ldma2	Alpha and beta proteins (a+b)	LDH C-terminal domain-like	LDH C-terminal domain-like	Lactate & malate dehydrogenases, C-terminal domain	Lactate dehydrogenase	spiny dogfish (Squalus acanthias ) [TaxId: 7797 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	LDH/MDH-like	8044596	4000045	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	LDH/MDH/AglA-like	8044597	3000039	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Ldh_1_C_13	e1ldmA1	A: a+b complex topology	X: LDH C-terminal domain-like (From Topology)	H: LDH C-terminal domain-like (From Topology)	T: LDH C-terminal domain-like	F: Ldh_1_C_13	ECOD (1.6)
A	Ldh_1_N	e1ldmA2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: Ldh_1_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.2.0)
A	3.90.110.10	Alpha Beta	Alpha-Beta Complex	L-2-Hydroxyisocaproate Dehydrogenase	Chain A, domain 2	CATH (4.2.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	M4 LACTATE DEHYDROGENASE	L-lactate dehydrogenase (NAD+) activity L-2-hydroxycarboxylate dehydrogenase (NAD+) activity oxidoreductase activity L-lactate dehydrogenase activity oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor oxidoreductase activity, acting on CH-OH group of donors lactate dehydrogenase activity catalytic activity	oxoacid metabolic process carboxylic acid metabolic process small molecule metabolic process metabolic process cellular process monocarboxylic acid metabolic process organic acid metabolic process lactate metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR011304	L-lactate dehydrogenase	Family
A	IPR018177	L-lactate dehydrogenase, active site	Active Site
A	IPR001236	Lactate/malate dehydrogenase, N-terminal	Domain
A	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A	IPR015955	Lactate dehydrogenase/glycoside hydrolase, family 4, C-terminal	Homologous Superfamily
A	IPR022383	Lactate/malate dehydrogenase, C-terminal	Domain
A	IPR001557	L-lactate/malate dehydrogenase	Family

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

Chains	Enzyme Name	Description	Catalytic Residues
A	L-lactate dehydrogenase M-CSA #584	Lactate dehydrogenase catalyses the interconversion of L-lactate and pyruvate in the glycolytic pathway, coupled with the reduction/oxidation of NAD+ and NADH. The enzyme crystallised from dogfish is a homotetramer. There has been some debate about whether the enzyme mechanism is concerted or stepwise.	Defined by 4 residues: ARG:A-106ASP:A-166ARG:A-169HIS:A-193 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 1.1.1.27 (PDB Primary Data) Search M-CSA Motif + EC 1.1.1.27

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