Annotations: 8VC3

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	BPTI-like	8038550	3000628	SCOP2B (2021-05-27)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00014	Kunitz/Bovine pancreatic trypsin inhibitor domain (Kunitz_BPTI)	Kunitz/Bovine pancreatic trypsin inhibitor domain	Indicative of a protease inhibitor, usually a serine protease inhibitor. Structure is a disulfide rich alpha+beta fold. BPTI (bovine pancreatic trypsin inhibitor) is an extensively studied model structure. Certain family members are similar to the ...	Indicative of a protease inhibitor, usually a serine protease inhibitor. Structure is a disulfide rich alpha+beta fold. BPTI (bovine pancreatic trypsin inhibitor) is an extensively studied model structure. Certain family members are similar to the tick anticoagulant peptide (TAP, Swiss:P17726). This is a highly selective inhibitor of factor Xa in the blood coagulation pathways [1]. TAP molecules are highly dipolar [2], and are arranged to form a twisted two- stranded antiparallel beta-sheet followed by an alpha helix [1].	Domain
B [auth E], C [auth B], D [auth C], E [auth D]	PF07885	Ion channel (Ion_trans_2)	Ion channel	-	Family
B [auth E], C [auth B], D [auth C], E [auth D]	PF00520	Ion transport protein (Ion_trans)	Ion transport protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Kunitz-type serine protease inhibitor homolog alpha-dendrotoxin	enzyme regulator activity molecular function inhibitor activity peptidase regulator activity serine-type endopeptidase inhibitor activity molecular function regulator activity enzyme inhibitor activity peptidase inhibitor activity endopeptidase regulator activity endopeptidase inhibitor activity potassium channel regulator activity channel regulator activity ion channel regulator activity transporter regulator activity toxin activity	-	extracellular region extracellular space cellular anatomical entity
B [auth E], C [auth B], D [auth C], E [auth D]	Potassium voltage-gated channel subfamily A member 2	cytoskeletal protein binding protein binding binding kinesin binding passive transmembrane transporter activity gated channel activity voltage-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential monoatomic ion channel activity channel activity voltage-gated channel activity voltage-gated monoatomic ion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity cytoskeletal protein binding protein binding binding kinesin binding passive transmembrane transporter activity gated channel activity voltage-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential monoatomic ion channel activity channel activity voltage-gated channel activity voltage-gated monoatomic ion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity potassium ion transmembrane transporter activity potassium channel activity voltage-gated monoatomic cation channel activity monoatomic cation channel activity voltage-gated potassium channel activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity metal ion transmembrane transporter activity delayed rectifier potassium channel activity voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential outward rectifier potassium channel activity	developmental process corpus callosum development multicellular organismal process head development forebrain development animal organ development brain development nervous system development multicellular organism development central nervous system development anatomical structure development telencephalon development system development nerve development developmental process corpus callosum development multicellular organismal process head development forebrain development animal organ development brain development nervous system development multicellular organism development central nervous system development anatomical structure development telencephalon development system development nerve development cranial nerve development optic nerve development transport monoatomic ion transmembrane transport potassium ion transmembrane transport inorganic ion transmembrane transport establishment of localization metal ion transport inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization monoatomic ion transport potassium ion transport cellular process monoatomic cation transport monoamine transport regulation of localization nitrogen compound transport regulation of cellular process signaling regulation of catecholamine secretion organic hydroxy compound transport dopamine transport cell communication secretion by cell regulation of secretion by cell catecholamine transport signal release regulation of biological process secretion regulation of transport biological regulation export from cell cell-cell signaling dopamine secretion regulation of secretion catecholamine secretion amine transport regulation of amine transport regulation of dopamine secretion cranial nerve morphogenesis anatomical structure morphogenesis cranial nerve structural organization anatomical structure arrangement optic nerve morphogenesis optic nerve structural organization export across plasma membrane potassium ion export across plasma membrane system process nervous system process action potential transmission of nerve impulse neuronal action potential regulation of biological quality regulation of membrane potential circadian sleep/wake cycle, sleep rhythmic process circadian sleep/wake cycle rhythmic behavior circadian rhythm regulation of circadian sleep/wake cycle regulation of circadian sleep/wake cycle, non-REM sleep regulation of circadian rhythm circadian sleep/wake cycle, non-REM sleep behavior regulation of behavior circadian behavior sleep regulation of multicellular organismal process regulation of circadian sleep/wake cycle, sleep circadian sleep/wake cycle process pallium development cerebral cortex development sensory perception sensory perception of pain cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly protein homooligomerization cellular component organization or biogenesis	cell projection cell leading edge cellular anatomical entity plasma membrane bounded cell projection lamellipodium cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane cell projection cell leading edge cellular anatomical entity plasma membrane bounded cell projection lamellipodium cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane axon main axon juxtaparanode region of axon neuron projection somatodendritic compartment cell body perikaryon neuronal cell body cell-cell junction anchoring junction paranodal junction presynapse presynaptic membrane dendrite dendritic tree axon initial segment glutamatergic synapse voltage-gated potassium channel complex protein-containing complex plasma membrane protein complex potassium channel complex membrane protein complex cation channel complex transporter complex transmembrane transporter complex monoatomic ion channel complex membrane-bounded organelle intracellular anatomical structure organelle subcompartment intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum cytoplasm organelle membrane endoplasmic reticulum membrane leading edge membrane lamellipodium membrane cell projection membrane axon terminus distal axon calyx of Held neuron projection terminus endosome intracellular vesicle cytoplasmic vesicle vesicle neuronal cell body membrane cell body membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR002223	Pancreatic trypsin inhibitor Kunitz domain	Domain
A	IPR020901	Proteinase inhibitor I2, Kunitz, conserved site	Conserved Site
A	IPR036880	Pancreatic trypsin inhibitor Kunitz domain superfamily	Homologous Superfamily
B [auth E], C [auth B], D [auth C], E [auth D]	IPR003972	Potassium channel, voltage dependent, Kv1	Family
B [auth E], C [auth B], D [auth C], E [auth D]	IPR000210	BTB/POZ domain	Domain
B [auth E], C [auth B], D [auth C], E [auth D]	IPR003968	Potassium channel, voltage dependent, Kv	Family
B [auth E], C [auth B], D [auth C], E [auth D]	IPR005821	Ion transport domain	Domain
B [auth E], C [auth B], D [auth C], E [auth D]	IPR003131	Potassium channel tetramerisation-type BTB domain	Domain
B [auth E], C [auth B], D [auth C], E [auth D]	IPR004049	Potassium channel, voltage dependent, Kv1.2	Family
B [auth E], C [auth B], D [auth C], E [auth D]	IPR011333	SKP1/BTB/POZ domain superfamily	Homologous Superfamily
B [auth E], C [auth B], D [auth C], E [auth D]	IPR027359	Voltage-dependent channel domain superfamily	Homologous Superfamily

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
B [auth E], C [auth B], D [auth C], E [auth D]	PDBTM	Annotated as membrane protein by PDBTM

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.