8D7E | pdb_00008d7e

Cryo-EM structure of human CNTFR alpha in complex with the Fab fragments of two antibodies

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth C]	SCOP2B Superfamily	Fibronectin type III	8055163	3002063	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 C]	F_UNCLASSIFIED	e8d7eC3	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 [auth G]	F_UNCLASSIFIED	e8d7eG1	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 [auth F]	F_UNCLASSIFIED	e8d7eF1	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)
E [auth D]	F_UNCLASSIFIED	e8d7eD1	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 [auth E]	F_UNCLASSIFIED	e8d7eE1	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)

Domain Annotation: CATH CATH Database Homepage

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

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth G]	Light Chain	IGKV3	Kappa	ciliary neurotrophic factor receptor subunit alpha	SAbDab (2025-11-28)
C [auth F]	Heavy Chain	IGHV3	-	ciliary neurotrophic factor receptor subunit alpha	SAbDab (2025-11-28)
E [auth D]	Heavy Chain	IGHV3	-	ciliary neurotrophic factor receptor subunit alpha	SAbDab (2025-11-28)
D [auth E]	Light Chain	IGKV1	Kappa	ciliary neurotrophic factor receptor subunit alpha	SAbDab (2025-11-28)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth C]	PF00041	Fibronectin type III domain (fn3)	Fibronectin type III domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth C]	Ciliary neurotrophic factor receptor subunit alpha	protein binding binding signaling receptor binding interleukin-11 binding growth factor binding cytokine binding interleukin-11 receptor activity molecular transducer activity transmembrane signaling receptor activity signaling receptor activity cytokine receptor activity immune receptor activity ciliary neurotrophic factor receptor activity	developmental process anatomical structure development brainstem development neuron apoptotic process cellular process apoptotic process motor neuron apoptotic process cell death programmed cell death cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus developmental process anatomical structure development brainstem development neuron apoptotic process cellular process apoptotic process motor neuron apoptotic process cell death programmed cell death cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide ciliary neurotrophic factor-mediated signaling pathway response to chemical cellular response to cytokine stimulus signal transduction negative regulation of neuron apoptotic process negative regulation of programmed cell death regulation of apoptotic process negative regulation of biological process regulation of programmed cell death negative regulation of apoptotic process negative regulation of cellular process regulation of neuron apoptotic process cell population proliferation positive regulation of cell population proliferation regulation of cell population proliferation positive regulation of biological process positive regulation of cellular process muscle structure development skeletal muscle organ development animal organ development muscle organ development behavior suckling behavior multicellular organismal process feeding behavior multicellular organism development nervous system development system development reproductive process sex differentiation developmental process involved in reproduction regulation of motor neuron apoptotic process negative regulation of motor neuron apoptotic process	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane apical part of cell plasma membrane region apical plasma membrane protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex ciliary neurotrophic factor receptor complex cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane apical part of cell plasma membrane region apical plasma membrane protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex ciliary neurotrophic factor receptor complex membrane protein complex receptor complex extrinsic component of membrane CNTFR-CLCF1 complex extracellular region
B [auth G]	H4H25311P2 antibody Fab fragment light chain	-	-	-
C [auth F]	H4H25311P2 antibody Fab fragment heavy chain	-	-	-
E [auth D]	REGN8938 antibody Fab fragment heavy chain	-	-	-
D [auth E]	REGN8938 antibody Fab fragment light chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth C]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A [auth C]	IPR003598	Immunoglobulin subtype 2	Domain
A [auth C]	IPR003530	Long hematopoietin receptor, soluble alpha chain, conserved site	Conserved Site
A [auth C]	IPR003599	Immunoglobulin domain subtype	Domain
A [auth C]	IPR050379	Type I Cytokine Receptor	Family
A [auth C]	IPR003961	Fibronectin type III	Domain
A [auth C]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A [auth C]	IPR007110	Immunoglobulin-like domain	Domain
A [auth C]	IPR036116	Fibronectin type III superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth C]	Pharos: P26992	hypertensive disorder psoriasis idiopathic scoliosis osteosarcoma

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.