7BC7 | pdb_00007bc7

Cryo-EM structure of the proton coupled folate transporter at pH 6.0 bound to pemetrexed

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	PsbY	e7bc7B1	A: a/b three-layered sandwiches	X: CNF1/YfiH-like putative cysteine hydrolases	H: Bromodomain	T: Bromodomain	F: PsbY	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Heavy Chain	IGHV3	-	proton-coupled folate transporter	SAbDab (2026-03-27)

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
B	nanobody	-	-	-
A	Proton-coupled folate transporter	xenobiotic transmembrane transporter activity dicarboxylic acid transmembrane transporter activity transporter activity carboxylic acid transmembrane transporter activity methotrexate transmembrane transporter activity transmembrane transporter activity vitamin binding organic acid binding binding ion binding modified amino acid binding folic acid binding anion binding carboxylic acid binding xenobiotic transmembrane transporter activity dicarboxylic acid transmembrane transporter activity transporter activity carboxylic acid transmembrane transporter activity methotrexate transmembrane transporter activity transmembrane transporter activity vitamin binding organic acid binding binding ion binding modified amino acid binding folic acid binding anion binding carboxylic acid binding heterocyclic compound binding small molecule binding monoatomic cation transmembrane transporter activity proton transmembrane transporter activity solute:monoatomic cation symporter activity folic acid transmembrane transporter activity vitamin transmembrane transporter activity modified amino acid transmembrane transporter activity secondary active transmembrane transporter activity folic acid:proton symporter activity active transmembrane transporter activity solute:proton symporter activity monoatomic ion transmembrane transporter activity symporter activity	import into cell organic anion transport nitrogen compound transport carboxylic acid transport carboxylic acid transmembrane transport transport import across plasma membrane vitamin transport folate transmembrane transport establishment of localization transmembrane transport organic acid transport localization folate import across plasma membrane folic acid transport import into cell organic anion transport nitrogen compound transport carboxylic acid transport carboxylic acid transmembrane transport transport import across plasma membrane vitamin transport folate transmembrane transport establishment of localization transmembrane transport organic acid transport localization folate import across plasma membrane folic acid transport dicarboxylic acid transport cellular process modified amino acid transport vitamin transmembrane transport	cell periphery cellular anatomical structure apical part of cell membrane plasma membrane plasma membrane region apical plasma membrane membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cell periphery cellular anatomical structure apical part of cell membrane plasma membrane plasma membrane region apical plasma membrane membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cytoplasm vesicle endosome membrane cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane organelle membrane basal part of cell basal plasma membrane basolateral plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR011701	Major facilitator superfamily	Family
A	IPR036259	MFS transporter superfamily	Homologous Superfamily

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	proton coupled folate transporter (SLC46A1), outward open at pH 7.5

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.