3CQR

Crystal Structure of the Lipocalin domain of Violaxanthin de-epoxidase (VDE) at pH5

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Lipocalins	8052645	3001332	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Lipocalins	8052645	3001332	SCOP2B (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	VDE	e3cqrA1	A: beta barrels	X: Lipocalins/Streptavidin	H: Lipocalins (From Topology)	T: Lipocalins	F: VDE	ECOD (1.6)
B	VDE	e3cqrB1	A: beta barrels	X: Lipocalins/Streptavidin	H: Lipocalins (From Topology)	T: Lipocalins	F: VDE	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.128.20	Mainly Beta	Beta Barrel	Lipocalin	Calycin beta-barrel core domain	CATH (4.3.0)
B	2.40.128.20	Mainly Beta	Beta Barrel	Lipocalin	Calycin beta-barrel core domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF07137	VDE lipocalin domain (VDE)	VDE lipocalin domain	This family represents a conserved region approximately 150 residues long within plant violaxanthin de-epoxidase (VDE). In higher plants, violaxanthin de-epoxidase forms part of a conserved system that dissipates excess energy as heat in the light-ha ...	This family represents a conserved region approximately 150 residues long within plant violaxanthin de-epoxidase (VDE). In higher plants, violaxanthin de-epoxidase forms part of a conserved system that dissipates excess energy as heat in the light-harvesting complexes of photosystem II (PSII), thus protecting them from photo-inhibitory damage [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Violaxanthin de-epoxidase, chloroplast	protein binding binding protein domain specific binding oxidoreductase activity catalytic activity violaxanthin de-epoxidase activity	fatty acid metabolic process oxoacid metabolic process cellular metabolic process carboxylic acid metabolic process primary metabolic process organic acid metabolic process organic substance metabolic process cellular lipid metabolic process metabolic process cellular process small molecule metabolic process monocarboxylic acid metabolic process lipid metabolic process organic cyclic compound metabolic process fatty acid metabolic process oxoacid metabolic process cellular metabolic process carboxylic acid metabolic process primary metabolic process organic acid metabolic process organic substance metabolic process cellular lipid metabolic process metabolic process cellular process small molecule metabolic process monocarboxylic acid metabolic process lipid metabolic process organic cyclic compound metabolic process organonitrogen compound metabolic process tetrapyrrole metabolic process chlorophyll metabolic process porphyrin-containing compound metabolic process tetraterpenoid metabolic process xanthophyll metabolic process xanthophyll cycle carotenoid metabolic process terpenoid metabolic process isoprenoid metabolic process response to stimulus response to stress response to heat response to abiotic stimulus response to temperature stimulus	chloroplast thylakoid membrane membrane-bounded organelle plastid membrane intracellular anatomical structure plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid intracellular organelle organelle envelope bounding membrane of organelle thylakoid plastid envelope chloroplast chloroplast thylakoid membrane membrane-bounded organelle plastid membrane intracellular anatomical structure plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid intracellular organelle organelle envelope bounding membrane of organelle thylakoid plastid envelope chloroplast non-membrane-bounded organelle membrane cellular anatomical entity intracellular membrane-bounded organelle thylakoid membrane organelle chloroplast thylakoid intracellular non-membrane-bounded organelle outer membrane cytoplasm photosynthetic membrane organelle membrane extracellular region thylakoid lumen cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR010788	VDE lipocalin domain	Domain
A, B	IPR044682	Violaxanthin de-epoxidase	Family
A, B	IPR012674	Calycin	Homologous Superfamily
A, B	IPR022272	Lipocalin family conserved site	Conserved Site

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.