Annotations: 4OFK

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	C2-set_2_1	e4ofkB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C2-set_2_1	ECOD (1.6)
A	C2-set_2_1	e4ofkA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C2-set_2_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Protein SYG-2	cell adhesion molecule binding protein binding binding identical protein binding protein homodimerization activity protein dimerization activity	localization protein localization to synapse macromolecule localization intracellular protein localization protein localization to cell junction regulation of biological process signaling biological regulation cell-cell signaling cellular process cell communication cellular component organization cell junction organization synapse organization localization protein localization to synapse macromolecule localization intracellular protein localization protein localization to cell junction regulation of biological process signaling biological regulation cell-cell signaling cellular process cell communication cellular component organization cell junction organization synapse organization cellular component organization or biogenesis multicellular organismal process axonogenesis cellular developmental process developmental growth cell projection organization plasma membrane bounded cell projection morphogenesis cell development neuron projection development cell growth cell morphogenesis neurogenesis multicellular organism development cell projection morphogenesis neuron differentiation neuron projection morphogenesis cell differentiation anatomical structure development system development developmental process collateral sprouting plasma membrane bounded cell projection organization developmental cell growth growth nervous system development axon development cell morphogenesis involved in neuron differentiation developmental growth involved in morphogenesis generation of neurons anatomical structure morphogenesis neuron development cell adhesion cell-cell adhesion neuron recognition synaptic target recognition cell recognition cellular component biogenesis cellular component assembly cell junction assembly synapse assembly	cell-cell junction cellular anatomical structure anchoring junction cell junction cell periphery membrane plasma membrane synapse plasma membrane region synaptic membrane protein-containing complex protein complex involved in cell adhesion

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A, B	IPR003598	Immunoglobulin subtype 2	Domain
A, B	IPR013106	Immunoglobulin V-set domain	Domain
A, B	IPR003599	Immunoglobulin domain subtype	Domain
A, B	IPR013098	Immunoglobulin I-set	Domain
A, B	IPR051275	Cellular adhesion and signaling domain-containing protein	Family
A, B	IPR003961	Fibronectin type III	Domain
A, B	IPR053896	Butyrophilin subfamily 3 member A2-like, Ig-C domain	Domain
A, B	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, B	IPR013162	CD80-like, immunoglobulin C2-set	Domain
A, B	IPR007110	Immunoglobulin-like domain	Domain
A, B	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.