6NKQ

The structure of bovine beta-lactoglobulin in novel crystals grown at pH 3.8

External Resource: Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A [auth B]	d6nkqb_	All beta proteins	Lipocalins	Lipocalins	Retinol binding protein-like	automated matches	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
B [auth C]	d6nkqc_	All beta proteins	Lipocalins	Lipocalins	Retinol binding protein-like	automated matches	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
C [auth D]	d6nkqd_	All beta proteins	Lipocalins	Lipocalins	Retinol binding protein-like	automated matches	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
D [auth E]	d6nkqe_	All beta proteins	Lipocalins	Lipocalins	Retinol binding protein-like	automated matches	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
E [auth F]	d6nkqf_	All beta proteins	Lipocalins	Lipocalins	Retinol binding protein-like	automated matches	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
F [auth A]	d6nkqa_	All beta proteins	Lipocalins	Lipocalins	Retinol binding protein-like	automated matches	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth B]	SCOP2B Superfamily	Lipocalins	8042609	3001332	SCOP2B (2022-06-29)
B [auth C]	SCOP2B Superfamily	Lipocalins	8042609	3001332	SCOP2B (2022-06-29)
C [auth D]	SCOP2B Superfamily	Lipocalins	8042609	3001332	SCOP2B (2022-06-29)
D [auth E]	SCOP2B Superfamily	Lipocalins	8042609	3001332	SCOP2B (2022-06-29)
E [auth F]	SCOP2B Superfamily	Lipocalins	8042609	3001332	SCOP2B (2022-06-29)
F [auth A]	SCOP2B Superfamily	Lipocalins	8042609	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 [auth B]	PF00061	e6nkqB1	A: beta barrels	X: Lipocalins/Streptavidin	H: Lipocalins (From Topology)	T: Lipocalins	F: PF00061	ECOD (1.6)
B [auth C]	PF00061	e6nkqC1	A: beta barrels	X: Lipocalins/Streptavidin	H: Lipocalins (From Topology)	T: Lipocalins	F: PF00061	ECOD (1.6)
C [auth D]	PF00061	e6nkqD1	A: beta barrels	X: Lipocalins/Streptavidin	H: Lipocalins (From Topology)	T: Lipocalins	F: PF00061	ECOD (1.6)
D [auth E]	PF00061	e6nkqE1	A: beta barrels	X: Lipocalins/Streptavidin	H: Lipocalins (From Topology)	T: Lipocalins	F: PF00061	ECOD (1.6)
E [auth F]	PF00061	e6nkqF1	A: beta barrels	X: Lipocalins/Streptavidin	H: Lipocalins (From Topology)	T: Lipocalins	F: PF00061	ECOD (1.6)
F [auth A]	PF00061	e6nkqA1	A: beta barrels	X: Lipocalins/Streptavidin	H: Lipocalins (From Topology)	T: Lipocalins	F: PF00061	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth B]	2.40.128.20	Mainly Beta	Beta Barrel	Lipocalin	Calycin beta-barrel core domain	CATH (4.3.0)
B [auth C]	2.40.128.20	Mainly Beta	Beta Barrel	Lipocalin	Calycin beta-barrel core domain	CATH (4.3.0)
C [auth D]	2.40.128.20	Mainly Beta	Beta Barrel	Lipocalin	Calycin beta-barrel core domain	CATH (4.3.0)
D [auth E]	2.40.128.20	Mainly Beta	Beta Barrel	Lipocalin	Calycin beta-barrel core domain	CATH (4.3.0)
E [auth F]	2.40.128.20	Mainly Beta	Beta Barrel	Lipocalin	Calycin beta-barrel core domain	CATH (4.3.0)
F [auth A]	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 [auth B], B [auth C], C [auth D], D [auth E], E [auth F], A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], F [auth A]	PF00061	Lipocalin / cytosolic fatty-acid binding protein family (Lipocalin)	Lipocalin / cytosolic fatty-acid binding protein family	Lipocalins are transporters for small hydrophobic molecules, such as lipids, steroid hormones, bilins, and retinoids. The family also encompasses the enzyme prostaglandin D synthase (EC:5.3.99.2). Alignment subsumes both the lipocalin and fatty acid ...	Lipocalins are transporters for small hydrophobic molecules, such as lipids, steroid hormones, bilins, and retinoids. The family also encompasses the enzyme prostaglandin D synthase (EC:5.3.99.2). Alignment subsumes both the lipocalin and fatty acid binding protein signatures from PROSITE. This is supported on structural and functional grounds. The structure is an eight-stranded beta barrel.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], F [auth A]	Beta-lactoglobulin	vitamin binding binding alcohol binding isoprenoid binding retinoid binding lipid binding retinol binding small molecule binding fatty acid binding organic acid binding ion binding anion binding long-chain fatty acid binding carboxylic acid binding vitamin binding binding alcohol binding isoprenoid binding retinoid binding lipid binding retinol binding small molecule binding fatty acid binding organic acid binding ion binding anion binding long-chain fatty acid binding carboxylic acid binding monocarboxylic acid binding identical protein binding protein binding	-	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], F [auth A]	IPR002447	Beta-lactoglobulin	Family
A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], F [auth A]	IPR012674	Calycin	Homologous Superfamily
A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], F [auth A]	IPR002345	Lipocalin	Family
A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], F [auth A]	IPR000566	Lipocalin/cytosolic fatty-acid binding domain	Domain
A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], A [auth B], B [auth C], C [auth D], D [auth E], E [auth F], F [auth A]	IPR022272	Lipocalin family conserved site	Conserved Site

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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.