Annotations: 5E4S

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	fn3	e5e4sA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: fn3	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	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	Contactin-4	-	multicellular organismal process regulation of cellular process cellular developmental process regulation of developmental process negative regulation of biological process regulation of cell differentiation neurogenesis multicellular organism development neuron differentiation cell differentiation anatomical structure development negative regulation of cellular process negative regulation of cell differentiation system development multicellular organismal process regulation of cellular process cellular developmental process regulation of developmental process negative regulation of biological process regulation of cell differentiation neurogenesis multicellular organism development neuron differentiation cell differentiation anatomical structure development negative regulation of cellular process negative regulation of cell differentiation system development developmental process regulation of biological process negative regulation of developmental process biological regulation nervous system development generation of neurons cellular process negative regulation of neuron differentiation regulation of neuron differentiation head development central nervous system development animal organ development brain development cell adhesion plasma membrane bounded cell projection organization cell projection organization cell development neuron projection development cellular component organization neuron development cellular component organization or biogenesis	membrane cellular anatomical entity side of membrane extracellular region cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR033007	Contactin-4, Ig6	Domain
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR003598	Immunoglobulin subtype 2	Domain
A	IPR003961	Fibronectin type III	Domain
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR003599	Immunoglobulin domain subtype	Domain
A	IPR007110	Immunoglobulin-like domain	Domain
A	IPR013098	Immunoglobulin I-set	Domain
A	IPR036116	Fibronectin type III superfamily	Homologous Superfamily

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.