4IIM | pdb_00004iim

Crystal structure of the Second SH3 Domain of ITSN1 bound with a synthetic peptide

External Resource: Annotation

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: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C [auth B]	SCOP2B Superfamily	SH3-domain	8052377	3000153	SCOP2B (2022-06-29)
A	SCOP2 Family	SH3-domain	8045867	4000369	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	SH3-domain	8052377	3000153	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C [auth B]		e4iimB2	A: Fusion glycoprotein F2	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Piwi	F:	ECOD (20:10:01)
A		e4iimA1	A: Alpha-beta plaits	X: Family B DNA polymerase insertion domain	H: Family B DNA polymerase insertion domain	T: Mannitol_dh	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth B]	2.30.30.40	Mainly Beta	Roll	SH3 type barrels.	SH3 Domains	CATH (4.3.0)
A	2.30.30.40	Mainly Beta	Roll	SH3 type barrels.	SH3 Domains	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C [auth B]	PF00018	SH3 domain (SH3_1)	SH3 domain	SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organisation. First described in the Src cytoplasmic tyrosine kinase Swiss:P12931. The structure is a partly opened beta barrel.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth C], D, E	peptide ligand	-	-	-
A, C [auth B]	Intersectin-1	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding protein-macromolecule adaptor activity molecular adaptor activity protein binding proline-rich region binding GTPase regulator activity enzyme regulator activity guanyl-nucleotide exchange factor activity nucleoside-triphosphatase regulator activity cation binding ion binding binding calcium ion binding metal ion binding small molecule binding protein-macromolecule adaptor activity molecular adaptor activity protein binding proline-rich region binding GTPase regulator activity enzyme regulator activity guanyl-nucleotide exchange factor activity nucleoside-triphosphatase regulator activity molecular function regulator activity	localization establishment of protein localization protein transport transport macromolecule localization intracellular protein localization establishment of localization multicellular organismal process regulation of developmental process cellular developmental process cell projection organization positive regulation of dendritic spine development positive regulation of biological process cell development localization establishment of protein localization protein transport transport macromolecule localization intracellular protein localization establishment of localization multicellular organismal process regulation of developmental process cellular developmental process cell projection organization positive regulation of dendritic spine development positive regulation of biological process cell development regulation of dendritic spine development neuron projection development cellular component organization positive regulation of developmental process neurogenesis multicellular organism development neuron differentiation dendrite development cell differentiation anatomical structure development cellular component organization or biogenesis system development developmental process dendritic spine development regulation of biological process plasma membrane bounded cell projection organization biological regulation nervous system development generation of neurons neuron development cellular process import into cell regulation of localization regulation of cellular process regulation of cellular component organization positive regulation of cellular component organization caveolin-mediated endocytosis vesicle-mediated transport positive regulation of endocytosis positive regulation of cellular process regulation of endocytosis regulation of transport regulation of vesicle-mediated transport positive regulation of transport positive regulation of caveolin-mediated endocytosis regulation of caveolin-mediated endocytosis endocytosis cellular localization establishment of localization in cell intracellular transport endosomal transport cellular response to stimulus regulation of signaling small GTPase-mediated signal transduction response to stimulus signaling regulation of small GTPase mediated signal transduction regulation of signal transduction intracellular signal transduction cell communication regulation of intracellular signal transduction regulation of response to stimulus intracellular signaling cassette regulation of cell communication signal transduction synaptic vesicle endocytosis synaptic vesicle cycle presynaptic endocytosis vesicle-mediated transport in synapse synaptic vesicle endosomal processing synaptic vesicle recycling via endosome synaptic vesicle recycling clathrin-dependent synaptic vesicle endocytosis clathrin-dependent endocytosis receptor-mediated endocytosis secretion by cell exocytosis secretion export from cell regulation of modification of postsynaptic actin cytoskeleton regulation of modification of synaptic structure regulation of synapse organization cell junction organization modification of postsynaptic actin cytoskeleton regulation of synapse structure or activity regulation of modification of postsynaptic structure synapse organization regulation of biological quality modification of synaptic structure modification of postsynaptic structure positive regulation of cell communication regulation of hormone secretion nitrogen compound transport regulation of peptide secretion positive regulation of secretion by cell hormone secretion peptide secretion regulation of secretion by cell positive regulation of hormone secretion positive regulation of secretion signal release regulation of peptide hormone secretion positive regulation of peptide secretion growth hormone secretion regulation of hormone levels regulation of growth hormone secretion regulation of peptide transport positive regulation of peptide hormone secretion cell-cell signaling regulation of secretion peptide transport positive regulation of growth hormone secretion peptide hormone secretion hormone transport positive regulation of signaling postsynapse organization regulation of postsynapse organization	cell projection cellular anatomical structure cell leading edge plasma membrane bounded cell projection lamellipodium intracellular anatomical structure synapse intracellular membraneless organelle actin cytoskeleton intracellular organelle postsynapse cytoskeleton organelle membraneless organelle cell projection cellular anatomical structure cell leading edge plasma membrane bounded cell projection lamellipodium intracellular anatomical structure synapse intracellular membraneless organelle actin cytoskeleton intracellular organelle postsynapse cytoskeleton organelle membraneless organelle cell junction postsynaptic cytoskeleton postsynaptic actin cytoskeleton clathrin-coated pit membrane endomembrane system membrane-bounded organelle organelle envelope nuclear envelope nucleus intracellular membrane-bounded organelle postsynaptic endocytic zone cytoplasm cytosol cell periphery plasma membrane presynapse presynaptic membrane plasma membrane region synaptic membrane glutamatergic synapse endosome intracellular vesicle recycling endosome cytoplasmic vesicle vesicle neuron spine neuron projection dendritic spine somatodendritic compartment dendrite dendritic tree cell body neuronal cell body apical dendrite

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C [auth B]	IPR001849	Pleckstrin homology domain	Domain
A, C [auth B]	IPR000261	EH domain	Domain
A, C [auth B]	IPR000219	Dbl homology domain	Domain
A, C [auth B]	IPR036028	SH3-like domain superfamily	Homologous Superfamily
A, C [auth B]	IPR000008	C2 domain	Domain
A, C [auth B]	IPR011993	PH-like domain superfamily	Homologous Superfamily
A, C [auth B]	IPR002048	EF-hand domain	Domain
A, C [auth B]	IPR001331	Guanine-nucleotide dissociation stimulator, CDC24, conserved site	Conserved Site
A, C [auth B]	IPR011992	EF-hand domain pair	Homologous Superfamily
A, C [auth B]	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
A, C [auth B]	IPR001452	SH3 domain	Domain
A, C [auth B]	IPR051480	Endocytic & GEF Adapter	Family
A, C [auth B]	IPR035892	C2 domain superfamily	Homologous Superfamily
A, C [auth B]	IPR035899	Dbl homology (DH) domain superfamily	Homologous Superfamily
A, C [auth B]	IPR032140	Intersectin-1, AP2 binding region	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, C [auth B]	Pharos: Q15811	Down syndrome psoriasis prostate cancer Sjogren syndrome adenoma invasive ductal breast carcinoma malignant glioma osteosarcoma pilocytic astrocytoma Prostatic Neoplasms subependymal giant cell astrocytoma astrocytic tumor ductal breast carcinoma in situ large cell medulloblastoma MALT lymphoma Down syndrome psoriasis prostate cancer Sjogren syndrome adenoma invasive ductal breast carcinoma malignant glioma osteosarcoma pilocytic astrocytoma Prostatic Neoplasms subependymal giant cell astrocytoma astrocytic tumor ductal breast carcinoma in situ large cell medulloblastoma MALT lymphoma ovarian cancer primitive neuroectodermal tumor atypical teratoid rhabdoid tumor glioblastoma malignant ependymoma medulloblastoma Pick disease

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.