Annotations: 4Y21

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	MUN domain-like	8018900	4004027	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Cullin repeat-like	8048008	3000059	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)
A	DUF1041	e4y21A1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: DUF1041	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.357.50	Mainly Alpha	Orthogonal Bundle	Tetracycline Repressor	domain 2	CATH (utative)
A	1.20.58.1100	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF06292	MUN domain (MUN)	MUN domain	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Protein unc-13 homolog A	protein binding binding SNARE binding syntaxin binding lipid binding diacylglycerol binding phospholipid binding protein-containing complex binding calmodulin binding identical protein binding cytoskeletal protein binding spectrin binding cation binding ion binding protein binding binding SNARE binding syntaxin binding lipid binding diacylglycerol binding phospholipid binding protein-containing complex binding calmodulin binding identical protein binding cytoskeletal protein binding spectrin binding cation binding ion binding calcium ion binding metal ion binding small molecule binding protein domain specific binding syntaxin-1 binding transition metal ion binding zinc ion binding	vesicle localization establishment of organelle localization cellular localization regulated exocytosis transport secretion establishment of vesicle localization neuronal dense core vesicle exocytosis export from cell dense core granule exocytosis establishment of localization vesicle-mediated transport localization dense core granule localization secretion by cell vesicle localization establishment of organelle localization cellular localization regulated exocytosis transport secretion establishment of vesicle localization neuronal dense core vesicle exocytosis export from cell dense core granule exocytosis establishment of localization vesicle-mediated transport localization dense core granule localization secretion by cell exocytosis organelle localization establishment of localization in cell secretory granule localization cellular process calcium-ion regulated exocytosis regulation of biological process amyloid precursor protein catabolic process regulation of cellular process regulation of protein metabolic process biological regulation regulation of amyloid precursor protein catabolic process primary metabolic process regulation of macromolecule metabolic process regulation of primary metabolic process metabolic process protein metabolic process macromolecule metabolic process amyloid precursor protein metabolic process regulation of metabolic process regulation of synaptic plasticity trans-synaptic signaling regulation of signaling modulation of chemical synaptic transmission signaling cell-cell signaling chemical synaptic transmission cell communication positive regulation of synaptic plasticity synaptic signaling regulation of trans-synaptic signaling anterograde trans-synaptic signaling regulation of cell communication regulation of biological quality regulation of cellular component organization synaptic vesicle priming regulation of synaptic vesicle priming synaptic vesicle cycle synaptic vesicle exocytosis vesicle-mediated transport in synapse cellular component organization cellular component biogenesis regulation of protein-containing complex assembly cellular component assembly signal release protein-containing complex assembly cellular component organization or biogenesis neurotransmitter secretion protein-containing complex organization neurotransmitter transport regulation of cellular component biogenesis signal release from synapse exocytic process multicellular organismal process regulation of growth developmental growth cell projection organization neuron projection development regulation of cell morphogenesis positive regulation of developmental process multicellular organism development cell projection morphogenesis neuron differentiation neuron projection morphogenesis cell differentiation anatomical structure development positive regulation of developmental growth system development developmental process nervous system development developmental growth involved in morphogenesis generation of neurons positive regulation of dendrite extension cellular developmental process regulation of developmental process plasma membrane bounded cell projection morphogenesis positive regulation of biological process cell development cell growth cell morphogenesis neurogenesis dendrite extension positive regulation of cellular process regulation of anatomical structure morphogenesis neuron projection extension regulation of developmental growth plasma membrane bounded cell projection organization developmental cell growth growth regulation of dendrite extension positive regulation of cell growth regulation of cell growth anatomical structure morphogenesis positive regulation of growth neuron development amyloid-beta metabolic process amide metabolic process membrane docking organelle localization by membrane tethering vesicle docking involved in exocytosis synaptic vesicle docking vesicle docking dense core granule priming cell junction organization neuromuscular junction development synapse organization regulation of neuronal synaptic plasticity regulation of short-term neuronal synaptic plasticity positive regulation of cell communication cellular response to stimulus positive regulation of signal transduction response to stimulus regulation of signal transduction glutamate receptor signaling pathway positive regulation of response to stimulus positive regulation of glutamate receptor signaling pathway signal transduction cell surface receptor signaling pathway regulation of glutamate receptor signaling pathway regulation of response to stimulus positive regulation of signaling regulation of localization positive regulation of neurotransmitter secretion positive regulation of secretion by cell regulation of secretion by cell positive regulation of secretion positive regulation of neurotransmitter transport regulation of transport regulation of neurotransmitter transport positive regulation of synaptic transmission regulation of secretion positive regulation of transport regulation of neurotransmitter secretion nerve development innervation long-term synaptic potentiation synaptic transmission, glutamatergic vesicle organization synaptic vesicle maturation organelle organization developmental maturation	presynapse cellular anatomical structure synapse cell junction presynaptic active zone cell periphery membrane plasma membrane presynaptic membrane plasma membrane region synaptic membrane glutamatergic synapse neuromuscular junction axon presynapse cellular anatomical structure synapse cell junction presynaptic active zone cell periphery membrane plasma membrane presynaptic membrane plasma membrane region synaptic membrane glutamatergic synapse neuromuscular junction axon neuron projection axon terminus plasma membrane bounded cell projection cell projection distal axon calyx of Held neuron projection terminus membrane-bounded organelle intracellular anatomical structure intracellular vesicle transport vesicle membrane endomembrane system intracellular organelle bounding membrane of organelle cytoplasmic vesicle vesicle membrane synaptic vesicle synaptic vesicle membrane vesicle transport vesicle exocytic vesicle membrane intracellular membrane-bounded organelle cytoplasmic vesicle membrane organelle secretory vesicle cytoplasm organelle membrane exocytic vesicle terminal bouton Golgi-associated vesicle protein-containing complex excitatory synapse

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR014770	Munc13 homology 1	Domain
A	IPR037302	Protein Unc-13, C2B domain	Domain
A	IPR014772	Mammalian uncoordinated homology 13, domain 2	Domain
A	IPR027080	Protein Unc-13	Family
A	IPR000008	C2 domain	Domain
A	IPR002219	Protein kinase C-like, phorbol ester/diacylglycerol-binding domain	Domain
A	IPR035892	C2 domain superfamily	Homologous Superfamily
A	IPR010439	MUN domain	Domain
A	IPR046349	C1-like domain 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.