1XHN | pdb_00001xhn

The crystal structure of Cellular Repressor of E1A-stimulated Genes (CREG)

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
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1xhna1	All beta proteins	Split barrel-like	FMN-binding split barrel	PNP-oxidase like	Cellular repressor of E1A-stimulated genes CREG1	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d1xhna2	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1xhnb2	All beta proteins	Split barrel-like	FMN-binding split barrel	PNP-oxidase like	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1xhnb3	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d1xhnc2	All beta proteins	Split barrel-like	FMN-binding split barrel	PNP-oxidase like	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d1xhnc3	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d1xhnd2	All beta proteins	Split barrel-like	FMN-binding split barrel	PNP-oxidase like	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d1xhnd3	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	PNP-oxidase like	8021320	4002129	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	FMN-binding split barrel	8033700	3000856	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	FMN-binding split barrel	8033700	3000856	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	FMN-binding split barrel	8033700	3000856	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	FMN-binding split barrel	8033700	3000856	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	Pyridox_ox_2	e1xhnA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: Pyridox_ox_2	ECOD (v294.1)
B	Peptidase_S46, Trypsin_2	e1xhnB1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: LigT-related	T: LigT-related	F: Peptidase_S46, Trypsin_2	ECOD (v294.1)
C	Peptidase_S46, Trypsin_2	e1xhnC1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: LigT-related	T: LigT-related	F: Peptidase_S46, Trypsin_2	ECOD (v294.1)
D	Peptidase_S46, Trypsin_2	e1xhnD1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: LigT-related	T: LigT-related	F: Peptidase_S46, Trypsin_2	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.110.10	Mainly Beta	Roll	Pnp Oxidase	Chain A	CATH (4.3.0)
B	2.30.110.10	Mainly Beta	Roll	Pnp Oxidase	Chain A	CATH (4.3.0)
C	2.30.110.10	Mainly Beta	Roll	Pnp Oxidase	Chain A	CATH (4.3.0)
D	2.30.110.10	Mainly Beta	Roll	Pnp Oxidase	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF13883	CREG, beta-barrel (CREG_beta-barrel)	CREG, beta-barrel	This entry represents the beta-barrel domain found in CREG (cellular repressor of E1A-stimulated genes) proteins from animals and closely homologues from plants, fungi and bacteria [1]. CREG is a secreted glycoprotein that inhibits proliferation and ...	This entry represents the beta-barrel domain found in CREG (cellular repressor of E1A-stimulated genes) proteins from animals and closely homologues from plants, fungi and bacteria [1]. CREG is a secreted glycoprotein that inhibits proliferation and enhances differentiation of human embryonal carcinoma cells. It forms a tight homodimer that, unlike related structural homologues it does not bind flavin mononucleotide as the putative flavin mononucleotide-binding pocket in CREG is sterically blocked by a loop and several key bulky residues [1]. The structure of this domain from bacterial and plant proteins revealed that it is involved in heme binding, such as Swiss:A0R6E4 and Swiss:Q8LDU1 [2,3].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Cellular Repressor of E1A-stimulated Genes	transcription corepressor activity transcription regulator activity transcription coregulator activity protein binding binding insulin-like growth factor receptor binding signaling receptor binding	homeostatic process biological regulation intracellular pH reduction regulation of intracellular pH vacuolar acidification lysosomal lumen acidification cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis regulation of pH monoatomic ion homeostasis intracellular chemical homeostasis regulation of biological quality monoatomic cation homeostasis homeostatic process biological regulation intracellular pH reduction regulation of intracellular pH vacuolar acidification lysosomal lumen acidification cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis regulation of pH monoatomic ion homeostasis intracellular chemical homeostasis regulation of biological quality monoatomic cation homeostasis intracellular monoatomic ion homeostasis localization import into cell transport cellular process endocytosis establishment of localization vesicle-mediated transport catabolic process autophagy metabolic process process utilizing autophagic mechanism regulation of cellular process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of transcription by RNA polymerase II regulation of biosynthetic process regulation of biological process primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process cellular component organization lysosome organization organelle organization vacuole organization lytic vacuole organization cellular component organization or biogenesis	membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cellular anatomical structure cytoplasmic vesicle organelle cytoplasm vesicle extracellular region extracellular exosome membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cellular anatomical structure cytoplasmic vesicle organelle cytoplasm vesicle extracellular region extracellular exosome extracellular vesicle extracellular organelle extracellular membrane-bounded organelle protein-containing complex transcription regulator complex lytic vacuole membrane-enclosed lumen cytoplasmic vesicle lumen vacuolar lumen intracellular organelle lumen lysosome vesicle lumen azurophil granule vacuole secretory granule lumen azurophil granule lumen organelle lumen secretory granule primary lysosome secretory vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR014631	Cellular repressor of E1A-stimulated genes (CREG)	Family
A, B, C, D	IPR012349	FMN-binding split barrel	Homologous Superfamily
A, B, C, D	IPR055343	CREG-like, beta-barrel	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D	Pharos: O75629	prostate cancer adrenal cortex carcinoma atopic eczema hypothyroidism ovarian cancer Prostatic Neoplasms allergic rhinitis diabetes mellitus malignant mesothelioma plasma cell myeloma systemic sclerosis asthma Hashimoto thyroiditis myopathy

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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.