Annotations: 4RJX

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Porin_O_P	e4rjxA1	A: beta barrels	X: Outer membrane meander beta-barrels	H: Porins	T: Porin	F: Porin_O_P	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.160.10	Mainly Beta	Beta Barrel	Porin	Porin	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07396	Phosphate-selective porin O and P (Porin_O_P)	Phosphate-selective porin O and P	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Porin O	wide pore channel activity passive transmembrane transporter activity channel activity porin activity transporter activity transmembrane transporter activity	localization transport monoatomic ion transport establishment of localization	protein-containing complex cellular anatomical structure membrane pore complex membrane protein complex cell periphery cell outer membrane external encapsulating structure cell envelope outer membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR023614	Porin domain superfamily	Homologous Superfamily
A	IPR010870	Phosphate-selective porin O/P	Family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: BETA-BARREL	Beta-Barrel Membrane Proteins: Porins and Relatives	OprO diphosphate-specific transporter

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.