Annotations: 3ONL

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	ENTH domain	8067883	4001355	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	ENTH/VHS domain-like	8067884	3000164	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	ENTH/VHS domain-like	8067884	3000164	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	t-snare proteins	8067986	3000366	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	PF01417	e3onlA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF01417	ECOD (1.6)
B	PF01417	e3onlB1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF01417	ECOD (1.6)
C	PF05008	e3onlC1	A: alpha bundles	X: STAT-like	H: t-snare proteins (From Topology)	T: t-snare proteins	F: PF05008	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.25.40.90	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat		CATH (4.3.0)
B	1.25.40.90	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat		CATH (4.3.0)
C	1.20.58.400	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01417	ENTH domain (ENTH)	ENTH domain	-	Repeat
C	PF05008	Vesicle transport v-SNARE protein N-terminus (V-SNARE)	Vesicle transport v-SNARE protein N-terminus	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Epsin-3	phosphatidylinositol-3,5-bisphosphate binding binding ion binding anion binding phosphatidylinositol bisphosphate binding phospholipid binding lipid binding phosphatidylinositol phosphate binding phosphatidylinositol binding small molecule binding clathrin binding protein binding phosphatidylinositol-3-phosphate binding	cellular localization transport intracellular transport establishment of localization vesicle-mediated transport endosomal transport localization late endosome to vacuole transport late endosome to vacuole transport via multivesicular body sorting pathway multivesicular body sorting pathway establishment of localization in cell cellular process vacuolar transport endosome transport via multivesicular body sorting pathway cellular localization transport intracellular transport establishment of localization vesicle-mediated transport endosomal transport localization late endosome to vacuole transport late endosome to vacuole transport via multivesicular body sorting pathway multivesicular body sorting pathway establishment of localization in cell cellular process vacuolar transport endosome transport via multivesicular body sorting pathway early endosome to Golgi transport cytosolic transport retrograde transport, endosome to Golgi Golgi vesicle transport import into cell endocytosis protein localization establishment of protein localization nitrogen compound transport organic substance transport protein transport cellular macromolecule localization macromolecule localization cellular component organization organelle organization actin cytoskeleton organization actin filament-based process cellular component organization or biogenesis cytoskeleton organization Golgi to endosome transport post-Golgi vesicle-mediated transport	membrane-bounded organelle intracellular organelle intracellular anatomical structure Golgi apparatus organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle endomembrane system endosome intracellular vesicle cytoplasmic vesicle vesicle cytosol membrane-bounded organelle intracellular organelle intracellular anatomical structure Golgi apparatus organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle endomembrane system endosome intracellular vesicle cytoplasmic vesicle vesicle cytosol cell periphery plasma membrane membrane protein-containing complex vesicle coat membrane protein complex membrane coat bounding membrane of organelle vesicle membrane clathrin-coated vesicle clathrin vesicle coat coated vesicle clathrin-coated vesicle membrane coated membrane clathrin coat coated vesicle membrane cytoplasmic vesicle membrane organelle membrane
C	t-SNARE VTI1	SNAP receptor activity protein-macromolecule adaptor activity molecular adaptor activity protein binding binding SNARE binding	inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process calcium ion homeostasis cellular homeostasis chemical homeostasis vacuolar calcium ion homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis cellular localization post-Golgi vesicle-mediated transport inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process calcium ion homeostasis cellular homeostasis chemical homeostasis vacuolar calcium ion homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis cellular localization post-Golgi vesicle-mediated transport transport intracellular transport establishment of localization vesicle-mediated transport Golgi to vacuole transport localization establishment of localization in cell vacuolar transport cellular process Golgi vesicle transport import into cell endocytosis membrane organization membrane fusion organelle membrane fusion vesicle organization cellular component organization organelle fusion organelle organization cellular component organization or biogenesis vesicle fusion Golgi vesicle fusion to target membrane vacuole fusion vacuole organization vacuole fusion, non-autophagic catabolic process macroautophagy cellular metabolic process autophagy cellular catabolic process amphisome-lysosome fusion metabolic process process utilizing autophagic mechanism intra-Golgi vesicle-mediated transport protein localization establishment of protein localization nitrogen compound transport organic substance transport protein transport cellular macromolecule localization macromolecule localization intracellular protein transport endosomal transport cytosolic transport retrograde transport, endosome to Golgi vesicle fusion with Golgi apparatus Golgi organization endomembrane system organization Golgi to endosome transport	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol SNARE complex protein-containing complex membrane membrane protein complex membrane-bounded organelle endosome membrane endosome intracellular vesicle late endosome membrane intracellular membrane-bounded organelle intracellular anatomical structure cytoplasm cellular anatomical entity cytosol SNARE complex protein-containing complex membrane membrane protein complex membrane-bounded organelle endosome membrane endosome intracellular vesicle late endosome membrane intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane organelle late endosome vesicle organelle membrane organelle subcompartment endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum endoplasmic reticulum membrane vacuolar membrane storage vacuole lytic vacuole vacuole fungal-type vacuole lytic vacuole membrane fungal-type vacuole membrane autophagosome membrane autophagosome Golgi apparatus Golgi membrane transport vesicle transport vesicle membrane coated vesicle membrane COPII-coated ER to Golgi transport vesicle ER to Golgi transport vesicle membrane coated vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR008942	ENTH/VHS	Homologous Superfamily
A, B	IPR013809	ENTH domain	Domain
C	IPR038407	Vesicle transport v-SNARE, N-terminal domain superfamily	Homologous Superfamily
C	IPR000727	Target SNARE coiled-coil homology domain	Domain
C	IPR027027	GOSR2/Membrin/Bos1	Family
C	IPR007705	Vesicle transport v-SNARE, N-terminal	Domain
C	IPR010989	SNARE	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 R01GM133198.