Annotations: 4AUI

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Aldo_ket_red	e4auiA1	A: beta barrels	X: Globin-like	H: Nucleoside diphosphate kinases	T: Nucleoside diphosphate kinases	F: Aldo_ket_red	ECOD (v294.2)
B	Fer4_13	e4auiB2	A: beta barrels	X: PH domain-like	H: PH domain-like	T: PH domain-like	F: Fer4_13	ECOD (v294.2)
C	Fer4_13	e4auiC2	A: beta barrels	X: PH domain-like	H: PH domain-like	T: PH domain-like	F: Fer4_13	ECOD (v294.2)

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

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	PORIN (PORB)	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 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 wide pore channel activity passive transmembrane transporter activity channel activity porin activity transporter activity transmembrane transporter activity cation binding metal ion binding	transmembrane transport localization transport monoatomic ion transmembrane transport monoatomic ion transport cellular process establishment of localization	protein-containing complex cellular anatomical structure membrane pore complex membrane protein complex cell outer membrane external encapsulating structure extracellular region cell envelope outer membrane
D, E, F	POLY ALA	-	-	-

Chains	Accession	Name	Type
A, B, C	IPR050298	Gram-negative bacterial outer membrane porin	Family
A, B, C	IPR033900	Porin domain, Gram-negative type	Domain
A, B, C	IPR023614	Porin domain superfamily	Homologous Superfamily
A, B, C	IPR002299	Porin, Neisseria sp. type	Family
A, B, C	IPR001702	Porin, Gram-negative type	Family
A, B, C	IPR013793	Porin, Gram-negative type, conserved site	Conserved Site

Chains	External Link	Type	Class	Superfamily	Family
A, B, C	OPM	Transmembrane	Beta-barrel transmembrane	Trimeric porins (n=16,S=20)	General Bacterial Porin (GBP)

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

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

Chains	Resource Link	Group	Subgroup	Protein
A, B, C	mpstruc	TRANSMEMBRANE PROTEINS: BETA-BARREL	Beta-Barrel Membrane Proteins: Porins and Relatives	PorB outer membrane protein

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.

4AUI | pdb_00004aui