1XED

Crystal Structure of a Ligand-Binding Domain of the Human Polymeric Ig Receptor, pIgR

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	d1xeda1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	Polymeric-immunoglobulin receptor, PIGR	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d1xeda2	Artifacts	Tags	Tags	Tags	C-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1xedb1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	Polymeric-immunoglobulin receptor, PIGR	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1xedb2	Artifacts	Tags	Tags	Tags	C-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d1xedc1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	Polymeric-immunoglobulin receptor, PIGR	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d1xedc2	Artifacts	Tags	Tags	Tags	C-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d1xedd1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	Polymeric-immunoglobulin receptor, PIGR	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d1xedd2	Artifacts	Tags	Tags	Tags	C-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E	d1xede1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	Polymeric-immunoglobulin receptor, PIGR	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E	d1xede2	Artifacts	Tags	Tags	Tags	C-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
F	d1xedf1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	Polymeric-immunoglobulin receptor, PIGR	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
F	d1xedf2	Artifacts	Tags	Tags	Tags	C-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	V set domains-like	8054528	4007530	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Immunoglobulin (Ig) domain-like	8054529	3000071	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054529	3000071	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054529	3000071	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054529	3000071	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054529	3000071	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054529	3000071	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	V-set_14	e1xedA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_14	ECOD (1.6)
B	V-set_14	e1xedB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_14	ECOD (1.6)
C	V-set_14	e1xedC1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_14	ECOD (1.6)
D	V-set_14	e1xedD1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_14	ECOD (1.6)
E	V-set_14	e1xedE1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_14	ECOD (1.6)
F	V-set_14	e1xedF1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_14	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
E	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
F	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F	PF07686	Immunoglobulin V-set domain (V-set)	Immunoglobulin V-set domain	This domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F	Polymeric-immunoglobulin receptor	polymeric immunoglobulin binding protein-containing complex binding binding immunoglobulin binding molecular transducer activity immunoglobulin receptor activity transmembrane signaling receptor activity signaling receptor activity polymeric immunoglobulin receptor activity immune receptor activity	cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of biological process regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling immune response biological regulation cell communication Fc receptor signaling pathway immune response-regulating signaling pathway regulation of response to stimulus immune system process cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of biological process regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling immune response biological regulation cell communication Fc receptor signaling pathway immune response-regulating signaling pathway regulation of response to stimulus immune system process regulation of immune response cellular process regulation of immune system process signal transduction cell surface receptor protein tyrosine kinase signaling pathway ERBB signaling pathway epidermal growth factor receptor signaling pathway enzyme-linked receptor protein signaling pathway protein localization localization cellular localization receptor clustering cellular macromolecule localization macromolecule localization localization within membrane protein localization to membrane multicellular organismal process transport establishment of localization immunoglobulin transcytosis in epithelial cells vesicle-mediated transport immunoglobulin transcytosis in epithelial cells mediated by polymeric immunoglobulin receptor transcytosis mucosal immune response organ or tissue specific immune response system process nervous system process detection of chemical stimulus involved in sensory perception of bitter taste detection of chemical stimulus involved in sensory perception of taste detection of stimulus sensory perception of chemical stimulus sensory perception sensory perception of taste response to chemical detection of chemical stimulus sensory perception of bitter taste detection of stimulus involved in sensory perception detection of chemical stimulus involved in sensory perception	protein-containing complex receptor complex IgA immunoglobulin complex, circulating secretory IgA immunoglobulin complex extracellular region IgA immunoglobulin complex extracellular space cellular anatomical entity polymeric IgA immunoglobulin complex immunoglobulin complex, circulating immunoglobulin complex extracellular exosome membrane-bounded organelle extracellular vesicle protein-containing complex receptor complex IgA immunoglobulin complex, circulating secretory IgA immunoglobulin complex extracellular region IgA immunoglobulin complex extracellular space cellular anatomical entity polymeric IgA immunoglobulin complex immunoglobulin complex, circulating immunoglobulin complex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle intracellular anatomical structure intracellular vesicle lytic vacuole endomembrane system intracellular organelle bounding membrane of organelle vesicle membrane cytoplasmic vesicle lysosome vacuolar membrane membrane azurophil granule vacuole intracellular membrane-bounded organelle lytic vacuole membrane cytoplasmic vesicle membrane lysosomal membrane secretory granule primary lysosome secretory vesicle azurophil granule membrane cytoplasm organelle membrane secretory granule membrane cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR013106	Immunoglobulin V-set domain	Domain
A, B, C, D, E A, B, C, D, E, F	IPR003599	Immunoglobulin domain subtype	Domain
A, B, C, D, E A, B, C, D, E, F	IPR007110	Immunoglobulin-like domain	Domain
A, B, C, D, E A, B, C, D, E, F	IPR050671	CD300 family immune receptors	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D, E A, B, C, D, E, F	Pharos: P01833	B-cell chronic lymphocytic leukemia endometriosis invasive ductal breast carcinoma lung carcinoma nasopharyngeal carcinoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia breast cancer head and neck cancer lung adenocarcinoma malignant colon neoplasm non-small cell lung carcinoma pancreatic ductal adenocarcinoma transitional cell carcinoma breast carcinoma B-cell chronic lymphocytic leukemia endometriosis invasive ductal breast carcinoma lung carcinoma nasopharyngeal carcinoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia breast cancer head and neck cancer lung adenocarcinoma malignant colon neoplasm non-small cell lung carcinoma pancreatic ductal adenocarcinoma transitional cell carcinoma breast carcinoma IgA glomerulonephritis lung cancer malignant pancreatic neoplasm osteosarcoma pancreatic intraductal papillary-mucinous neoplasm

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.