Annotations: 2AP2

SINGLE CHAIN FV OF C219 IN COMPLEX WITH SYNTHETIC EPITOPE PEPTIDE

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2ap2a1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	Immunoglobulin light chain kappa variable domain, VL-kappa	Mouse (Mus musculus ) [TaxId: 10090 ], Mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d2ap2a3	Artifacts	Tags	Tags	Tags	C-terminal Tags	Mouse (Mus musculus ) [TaxId: 10090 ], Mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d2ap2a2	Artifacts	Tags	Tags	Tags	N-terminal Tags	Mouse (Mus musculus ) [TaxId: 10090 ], Mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B [auth C]	d2ap2c1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	Immunoglobulin light chain kappa variable domain, VL-kappa	Mouse (Mus musculus ) [TaxId: 10090 ], Mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B [auth C]	d2ap2c3	Artifacts	Tags	Tags	Tags	C-terminal Tags	Mouse (Mus musculus ) [TaxId: 10090 ], Mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B [auth C]	d2ap2c2	Artifacts	Tags	Tags	Tags	N-terminal Tags	Mouse (Mus musculus ) [TaxId: 10090 ], Mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Copper-bind	e2ap2A1	A: beta barrels	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Copper-bind	ECOD (v294.2)
B [auth C]	Copper-bind	e2ap2C1	A: beta barrels	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Copper-bind	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

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

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
A, B [auth C]	C219	V-KAPPA	Mus musculus (house mouse)	IGKV8-1901, IGKJ501	V-DOMAIN V-KAPPA	IG	FV-HEAVY_KAPPA	IMGT (202618-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A, B [auth C]	Light Chain	IGKV8	Kappa	protein (p-glycoprotein)	SAbDab (2026-05-15)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B [auth C]	SINGLE CHAIN FV	-	response to stimulus immune response immune system process adaptive immune response	protein-containing complex immunoglobulin complex cellular anatomical structure extracellular region
C [auth P], D [auth Q]	P-GLYCOPROTEIN	lipid carrier activity ATPase-coupled intramembrane lipid carrier activity phosphatidylcholine floppase activity transporter activity floppase activity phosphatidylcholine intramembrane carrier activity intramembrane lipid carrier activity molecular carrier activity ATP-dependent activity sphingolipid intramembrane carrier activity sphingolipid floppase activity ceramide floppase activity glycerophospholipid flippase activity flippase activity lipid carrier activity ATPase-coupled intramembrane lipid carrier activity phosphatidylcholine floppase activity transporter activity floppase activity phosphatidylcholine intramembrane carrier activity intramembrane lipid carrier activity molecular carrier activity ATP-dependent activity sphingolipid intramembrane carrier activity sphingolipid floppase activity ceramide floppase activity glycerophospholipid flippase activity flippase activity phosphatidylethanolamine flippase activity xenobiotic transmembrane transporter activity ABC-type transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity ABC-type xenobiotic transporter activity transmembrane transporter activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding ABC-type oligopeptide transporter activity oligopeptide transmembrane transporter activity pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity efflux transmembrane transporter activity	response to stimulus response to chemical response to xenobiotic stimulus behavior multicellular organismal process exploration behavior developmental process neurogenesis multicellular organism development cellular developmental process cell differentiation anatomical structure development cellular process nervous system development response to stimulus response to chemical response to xenobiotic stimulus behavior multicellular organismal process exploration behavior developmental process neurogenesis multicellular organism development cellular developmental process cell differentiation anatomical structure development cellular process nervous system development system development nitrogen compound transport transport oligopeptide transport establishment of localization peptide transport transmembrane transport oligopeptide transmembrane transport localization oligopeptide export from mitochondrion intercellular transport system process signaling steroid hormone secretion organic hydroxy compound transport hormone secretion cell communication secretion by cell signal release aldosterone secretion regulation of biological quality mineralocorticoid secretion regulation of biological process secretion regulation of hormone levels biological regulation lipid localization export from cell cell-cell signaling lipid transport endocrine hormone secretion endocrine process lipid export from cell macromolecule localization hormone transport corticosteroid hormone secretion catabolic process proteasomal protein catabolic process metabolic process primary metabolic process protein catabolic process protein metabolic process macromolecule metabolic process macromolecule catabolic process heart development cardiac muscle tissue development cardiac muscle cell differentiation animal organ development muscle cell differentiation tissue development cardiocyte differentiation striated muscle tissue development circulatory system development muscle structure development striated muscle cell differentiation muscle tissue development tissue regeneration developmental growth neural tissue regeneration growth regeneration terpenoid transport isoprenoid transport cellular response to stimulus regulation of cellular process cell surface receptor signaling pathway cell surface receptor protein tyrosine kinase signaling pathway ERBB signaling pathway epidermal growth factor receptor signaling pathway signal transduction enzyme-linked receptor protein signaling pathway biosynthetic process gene expression macromolecule biosynthetic process xenobiotic transport across blood-brain barrier xenobiotic transport vascular transport circulatory system process vascular process in circulatory system transport across blood-brain barrier adult heart development gonad development reproductive system development reproductive process female gonad development sex differentiation female sex differentiation development of primary female sexual characteristics developmental process involved in reproduction development of primary sexual characteristics reproductive structure development xenobiotic export from cell xenobiotic detoxification by transmembrane export across the plasma membrane detoxification export across plasma membrane response to toxic substance membrane organization phospholipid translocation phospholipid transport lipid translocation regulation of membrane lipid distribution cellular component organization cellular component organization or biogenesis organophosphate ester transport	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane cell-cell junction intercellular canaliculus anchoring junction cell junction cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B [auth C]	IPR003597	Immunoglobulin C1-set	Domain
A, B [auth C]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, B [auth C]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A, B [auth C]	IPR013106	Immunoglobulin V-set domain	Domain
A, B [auth C]	IPR003599	Immunoglobulin domain subtype	Domain
A, B [auth C]	IPR007110	Immunoglobulin-like domain	Domain
A, B [auth C]	IPR050380	Immune Recognition and Response Modulators	Family
A, B [auth C]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
A, B [auth C]	IPR050199	Immunoglobulin Heavy Variable	Family
A, B [auth C]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, B [auth C]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A, B [auth C]	IPR013106	Immunoglobulin V-set domain	Domain
A, B [auth C]	IPR003599	Immunoglobulin domain subtype	Domain
A, B [auth C]	IPR007110	Immunoglobulin-like domain	Domain
C [auth P], D [auth Q]	IPR003439	ABC transporter-like, ATP-binding domain	Domain
C [auth P], D [auth Q]	IPR003593	AAA+ ATPase domain	Domain
C [auth P], D [auth Q]	IPR011527	ABC transporter type 1, transmembrane domain	Domain
C [auth P], D [auth Q]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
C [auth P], D [auth Q]	IPR017871	ABC transporter-like, conserved site	Conserved Site
C [auth P], D [auth Q]	IPR036640	ABC transporter type 1, transmembrane domain superfamily	Homologous Superfamily
C [auth P], D [auth Q]	IPR039421	Type 1 protein exporter	Family