1EK9

2.1A X-RAY STRUCTURE OF TOLC: AN INTEGRAL OUTER MEMBRANE PROTEIN AND EFFLUX PUMP COMPONENT FROM ESCHERICHIA COLI

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 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)
A	d1ek9a_	Membrane and cell surface proteins and peptides	Outer membrane efflux proteins (OEP)	Outer membrane efflux proteins (OEP)	Outer membrane efflux proteins (OEP)	Integral outer membrane protein TolC, efflux pump component	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d1ek9b_	Membrane and cell surface proteins and peptides	Outer membrane efflux proteins (OEP)	Outer membrane efflux proteins (OEP)	Outer membrane efflux proteins (OEP)	Integral outer membrane protein TolC, efflux pump component	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C	d1ek9c_	Membrane and cell surface proteins and peptides	Outer membrane efflux proteins (OEP)	Outer membrane efflux proteins (OEP)	Outer membrane efflux proteins (OEP)	Integral outer membrane protein TolC, efflux pump component	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Outer membrane efflux proteins (OEP)	8025554	4003096	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Outer membrane efflux proteins (OEP)	8037933	3000246	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Outer membrane efflux proteins (OEP)	8037933	3000246	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Outer membrane efflux proteins (OEP)	8037933	3000246	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	OEP	e1ek9A1	A: a+b duplicates or obligate multimers	X: Outer membrane efflux proteins (OEP) (From Topology)	H: Outer membrane efflux proteins (OEP) (From Topology)	T: Outer membrane efflux proteins (OEP)	F: OEP	ECOD (1.6)
B	OEP	e1ek9B1	A: a+b duplicates or obligate multimers	X: Outer membrane efflux proteins (OEP) (From Topology)	H: Outer membrane efflux proteins (OEP) (From Topology)	T: Outer membrane efflux proteins (OEP)	F: OEP	ECOD (1.6)
C	OEP	e1ek9C1	A: a+b duplicates or obligate multimers	X: Outer membrane efflux proteins (OEP) (From Topology)	H: Outer membrane efflux proteins (OEP) (From Topology)	T: Outer membrane efflux proteins (OEP)	F: OEP	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.1600.10	Mainly Alpha	Up-down Bundle	Outer membrane efflux proteins (OEP)	Outer membrane efflux proteins (OEP)	CATH (4.3.0)
B	1.20.1600.10	Mainly Alpha	Up-down Bundle	Outer membrane efflux proteins (OEP)	Outer membrane efflux proteins (OEP)	CATH (4.3.0)
C	1.20.1600.10	Mainly Alpha	Up-down Bundle	Outer membrane efflux proteins (OEP)	Outer membrane efflux proteins (OEP)	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF02321	Outer membrane efflux protein (OEP)	Outer membrane efflux protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	OUTER MEMBRANE PROTEIN TOLC	wide pore channel activity passive transmembrane transporter activity channel activity porin activity transporter activity transmembrane transporter activity lipid transporter activity lipid transmembrane transporter activity monocarboxylic acid transmembrane transporter activity carboxylic acid transmembrane transporter activity organic acid transmembrane transporter activity organic anion transmembrane transporter activity bile acid transmembrane transporter activity monoatomic ion channel activity wide pore channel activity passive transmembrane transporter activity channel activity porin activity transporter activity transmembrane transporter activity lipid transporter activity lipid transmembrane transporter activity monocarboxylic acid transmembrane transporter activity carboxylic acid transmembrane transporter activity organic acid transmembrane transporter activity organic anion transmembrane transporter activity bile acid transmembrane transporter activity monoatomic ion channel activity monoatomic ion transmembrane transporter activity efflux transmembrane transporter activity identical protein binding protein binding binding enterobactin transmembrane transporter activity siderophore-iron transmembrane transporter activity	response to stimulus response to chemical response to xenobiotic stimulus xenobiotic transport transport detoxification export across cell outer membrane xenobiotic detoxification by transmembrane export across the cell outer membrane establishment of localization response to toxic substance transmembrane transport localization cellular process response to antibiotic response to stimulus response to chemical response to xenobiotic stimulus xenobiotic transport transport detoxification export across cell outer membrane xenobiotic detoxification by transmembrane export across the cell outer membrane establishment of localization response to toxic substance transmembrane transport localization cellular process response to antibiotic monoatomic ion transmembrane transport monoatomic ion transport organic anion transport carboxylic acid transport lipid localization bile acid and bile salt transport lipid transport organic hydroxy compound transport organic acid transport monocarboxylic acid transport macromolecule localization siderophore transport iron ion transport metal ion transport enterobactin transport transition metal ion transport monoatomic cation transport iron coordination entity transport xenobiotic export from cell xenobiotic detoxification by transmembrane export across the plasma membrane export from cell export across plasma membrane	cellular anatomical structure membrane protein-containing complex efflux pump complex transmembrane transporter complex membrane protein complex transporter complex cell periphery cell surface periplasmic side of plasma membrane plasma membrane external side of plasma membrane side of membrane MacAB-TolC complex cellular anatomical structure membrane protein-containing complex efflux pump complex transmembrane transporter complex membrane protein complex transporter complex cell periphery cell surface periplasmic side of plasma membrane plasma membrane external side of plasma membrane side of membrane MacAB-TolC complex macrolide transmembrane transporter complex outer membrane-bounded periplasmic space cell envelope periplasmic space cell outer membrane external encapsulating structure outer membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR051906	Bacterial Outer Membrane Factor (OMF)	Family
A, B, C	IPR010130	Type I secretion outer membrane protein, TolC	Family
A, B, C	IPR003423	Outer membrane efflux protein	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C	OPM	Transmembrane	Beta-barrel transmembrane	Outer membrane efflux proteins (n=12,S=18) trimeric	Outer membrane efflux proteins

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C	mpstruc	TRANSMEMBRANE PROTEINS: BETA-BARREL	Beta-Barrel Membrane Proteins: Monomeric/Dimeric	TolC 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.