Annotations: 4QQV

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	F_UNCLASSIFIED	e4qqvA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF09240	e4qqvA4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF09240	ECOD (1.6)
A	PF09294	e4qqvA2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF09294	ECOD (1.6)
A	PF21460	e4qqvA3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF21460	ECOD (1.6)
B	F_UNCLASSIFIED	e4qqvB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: F_UNCLASSIFIED	ECOD (1.6)
B	PF09240	e4qqvB4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF09240	ECOD (1.6)
B	PF09294	e4qqvB2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF09294	ECOD (1.6)
B	PF21460	e4qqvB3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF21460	ECOD (1.6)
C	F_UNCLASSIFIED	e4qqvC1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: F_UNCLASSIFIED	ECOD (1.6)
C	PF09240	e4qqvC4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF09240	ECOD (1.6)
C	PF09294	e4qqvC2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF09294	ECOD (1.6)
C	PF21460	e4qqvC3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF21460	ECOD (1.6)
D	F_UNCLASSIFIED	e4qqvD1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: F_UNCLASSIFIED	ECOD (1.6)
D	PF09240	e4qqvD4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF09240	ECOD (1.6)
D	PF21460	e4qqvD3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF21460	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 (utative)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF21460	GM-CSF/IL-3/IL-5 receptor common beta subunit, N-terminal (IL3Rb_N)	GM-CSF/IL-3/IL-5 receptor common beta subunit, N-terminal	GM-CSF/IL-3/IL-5 receptor common beta subunit (IL3RB) is a cell surface receptor that plays a role in immune response and controls the production and differentiation of haematopoietic progenitor cells into lineage-restricted cells. It participates in ...	GM-CSF/IL-3/IL-5 receptor common beta subunit (IL3RB) is a cell surface receptor that plays a role in immune response and controls the production and differentiation of haematopoietic progenitor cells into lineage-restricted cells. It participates in the signaling pathways of interleukin-3, interleukin-5 and granulocyte-macrophage colony-stimulating factor/CSF2 which have overlapping activities on haematopoietic cells [1-4] and have been implicated in the pathogenesis of allergic diseases of the lung. IL3RB consists of four extracellular domains with an Ig-like fold. This entry represents the first domain.	Domain
A, B, C, D	PF09067	Erythropoietin receptor, ligand binding (EpoR_lig-bind)	Erythropoietin receptor, ligand binding	Members of this family interact with erythropoietin (EPO), with subsequent initiation of the downstream chain of events associated with binding of EPO to the receptor, including EPO-induced erythroblast proliferation and differentiation through induc ...	Members of this family interact with erythropoietin (EPO), with subsequent initiation of the downstream chain of events associated with binding of EPO to the receptor, including EPO-induced erythroblast proliferation and differentiation through induction of the JAK2/STAT5 signaling cascade. The domain adopts a secondary structure composed of a short amino-terminal helix, followed by two beta-sandwich regions [1].	Domain
A, B, C, D	PF09294	Interferon-alpha/beta receptor, fibronectin type III (Interfer-bind)	Interferon-alpha/beta receptor, fibronectin type III	Members of this family adopt a secondary structure consisting of seven beta-strands arranged in an immunoglobulin-like beta-sandwich, in a Greek-key topology. They are required for binding to interferon-alpha [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Interleukin-3 receptor class 2 subunit beta	molecular transducer activity transmembrane signaling receptor activity signaling receptor activity cytokine receptor activity immune receptor activity coreceptor activity	cellular response to stimulus response to organic substance regulation of biological process regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication cellular response to chemical stimulus response to chemical cellular response to cytokine stimulus cellular response to stimulus response to organic substance regulation of biological process regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication cellular response to chemical stimulus response to chemical cellular response to cytokine stimulus cellular process cellular response to organic substance signal transduction adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity immune response immune system process B cell mediated immunity leukocyte mediated immunity immunoglobulin mediated immune response adaptive immune response immune effector process interleukin-5-mediated signaling pathway cell surface receptor signaling pathway via STAT cell surface receptor signaling pathway via JAK-STAT granulocyte-macrophage colony-stimulating factor signaling pathway interleukin-3-mediated signaling pathway regulation of leukocyte proliferation cell population proliferation positive regulation of cell population proliferation positive regulation of biological process leukocyte proliferation regulation of cell population proliferation positive regulation of leukocyte proliferation positive regulation of cellular process	cell periphery cell surface membrane plasma membrane cellular anatomical entity external side of plasma membrane side of membrane protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex granulocyte macrophage colony-stimulating factor receptor complex receptor complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR015152	Growth hormone/erythropoietin receptor, ligand binding	Domain
A, B, C, D	IPR003961	Fibronectin type III	Domain
A, B, C, D	IPR011365	Cytokine IL-3/IL-5/GM-CSF receptor common beta chain	Family
A, B, C, D	IPR015373	Interferon/interleukin receptor domain	Domain
A, B, C, D	IPR003531	Short hematopoietin receptor, family 1, conserved site	Conserved Site
A, B, C, D	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, B, C, D	IPR036116	Fibronectin type III superfamily	Homologous Superfamily
A, B, C, D	IPR048668	Cytokine receptor common subunit beta, N-terminal	Domain

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.