4APS

Crystal structure of a POT family peptide transporter in an inward open conformation.

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d4apsb_	Membrane and cell surface proteins and peptides	MFS general substrate transporter	MFS general substrate transporter	Proton-dependent oligopeptide transporter (POT or PTR2) / nitrate transporter NRT1 family	Microbial PepT or POT	(Streptococcus thermophilus LMG 18311 ) [TaxId: 264199 ],	SCOPe (2.08)
A	d4apsa_	Membrane and cell surface proteins and peptides	MFS general substrate transporter	MFS general substrate transporter	Proton-dependent oligopeptide transporter (POT or PTR2) / nitrate transporter NRT1 family	Microbial PepT or POT	(Streptococcus thermophilus LMG 18311 ) [TaxId: 264199 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	PTR2	e4apsB1	A: alpha complex topology	X: Major facilitator superfamily (MFS) general substrate transporter (From Topology)	H: Major facilitator superfamily (MFS) general substrate transporter (From Topology)	T: Major facilitator superfamily (MFS) general substrate transporter	F: PTR2	ECOD (1.6)
A	PTR2	e4apsA1	A: alpha complex topology	X: Major facilitator superfamily (MFS) general substrate transporter (From Topology)	H: Major facilitator superfamily (MFS) general substrate transporter (From Topology)	T: Major facilitator superfamily (MFS) general substrate transporter	F: PTR2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.20.1250.20	Mainly Alpha	Up-down Bundle	Growth Hormone	Chain: A	CATH (4.3.0)
A	1.20.1250.20	Mainly Alpha	Up-down Bundle	Growth Hormone	Chain: A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00854	POT family (PTR2)	POT family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	DI-OR TRIPEPTIDE H+ SYMPORTER	peptide transmembrane transporter activity transporter activity transmembrane transporter activity identical protein binding protein binding binding	peptide transport localization nitrogen compound transport amide transport transport establishment of localization oligopeptide transport	cell periphery plasma membrane membrane cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR050171	Major Facilitator Superfamily (MFS) Transporters	Family
A, B	IPR000109	Proton-dependent oligopeptide transporter family	Family
A, B	IPR005279	Dipeptide/tripeptide permease	Family
A, B	IPR018456	PTR2 family proton/oligopeptide symporter, conserved site	Conserved Site
A, B	IPR036259	MFS transporter superfamily	Homologous Superfamily
A, B	IPR020846	Major facilitator superfamily domain	Domain

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B	OPM	Transmembrane	Alpha-helical polytopic	Major Facilitator Superfamily (MFS)	Proton-dependent oligopeptide transporter (POT)

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Major Facilitator Superfamily (MFS) Transporters	PepT_St Oligopeptide-proton symporter (POT family)

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.