Annotations: 8VZN

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C	Light Chain	IGKV1	Kappa	feline leukemia virus subgroup c cellular receptor 2	SAbDab (2025-12-26)
B	Heavy Chain	IGHV3	-	feline leukemia virus subgroup c cellular receptor 2	SAbDab (2025-12-26)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07690	Major Facilitator Superfamily (MFS_1)	Major Facilitator Superfamily	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	Fab FLV9 light chain	-	-	-
B	Fab FLV9 heavy chain	-	-	-
A	Feline leukemia virus subgroup C cellular receptor 2	binding tetrapyrrole binding heme binding choline binding cation binding ion binding small molecule binding heme transmembrane transporter activity transporter activity transmembrane transporter activity choline transmembrane transporter activity alcohol transmembrane transporter activity amine transmembrane transporter activity ethanolamine transmembrane transporter activity	developmental process multicellular organism development multicellular organismal process head development central nervous system development anatomical structure development animal organ development brain development nervous system development system development membrane lipid metabolic process lipid catabolic process catabolic process metabolic process developmental process multicellular organism development multicellular organismal process head development central nervous system development anatomical structure development animal organ development brain development nervous system development system development membrane lipid metabolic process lipid catabolic process catabolic process metabolic process cellular process primary metabolic process membrane lipid catabolic process lipid metabolic process biosynthetic process macromolecule metabolic process gene expression macromolecule biosynthetic process endothelial cell fate commitment cellular developmental process endothelium development epithelial cell fate commitment endothelial tip cell fate specification angiogenesis epithelial cell differentiation endothelial cell fate specification tube morphogenesis blood vessel endothelial cell differentiation blood vessel endothelial cell fate commitment cell differentiation blood vessel development epithelium development endothelial cell differentiation blood vessel morphogenesis tube development cell fate specification tissue development vasculature development sprouting angiogenesis circulatory system development anatomical structure morphogenesis anatomical structure formation involved in morphogenesis blood vessel endothelial cell fate specification cell fate commitment localization nitrogen compound transport transport choline transport establishment of localization organic cation transport respiratory tube development lung development respiratory system development system process circulatory system process vascular process in circulatory system vascular transport transport across blood-brain barrier cellular component organization organelle organization cellular component organization or biogenesis mitochondrion organization embryo development ending in birth or egg hatching chordate embryonic development embryo development in utero embryonic development	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure mitochondrion membrane intracellular membrane-bounded organelle intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane cell periphery membrane-bounded organelle mitochondrial membrane intracellular anatomical structure mitochondrion membrane intracellular membrane-bounded organelle intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane cell periphery plasma membrane organelle subcompartment endomembrane system endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum endoplasmic reticulum membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR049680	Choline/ethanolamine transporter FLVCR1-2/SLC49-like	Family
A	IPR011701	Major facilitator superfamily	Family
A	IPR036259	MFS transporter superfamily	Homologous Superfamily
A	IPR020846	Major facilitator superfamily domain	Domain

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Solute Carrier (SLC) Transporter Superfamily	FLVCR2 choline transporter (SLC49A2), with bound choline, inward-facing state

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.