5V5S | pdb_00005v5s

multi-drug efflux; membrane transport; RND superfamily; Drug resistance

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
AMR Gene: CARD Annotation
AMR Gene Family: CARD Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: mpstruc

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Outer membrane efflux proteins (OEP)	8037933	3000246	SCOP2B (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)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042535	3000769	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042535	3000769	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042525	3000503	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB TolC docking domain (DN and DC subdomains)	8042533	3000526	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042529	3000503	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB TolC docking domain (DN and DC subdomains)	8042531	3000526	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042534	3000769	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042529	3000503	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042525	3000503	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042534	3000769	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042523	3000503	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042528	3000503	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042535	3000769	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042529	3000503	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042535	3000769	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042523	3000503	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042525	3000503	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB TolC docking domain (DN and DC subdomains)	8042531	3000526	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042534	3000769	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042528	3000503	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB TolC docking domain (DN and DC subdomains)	8042533	3000526	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042534	3000769	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042525	3000503	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042529	3000503	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042523	3000503	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042529	3000503	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042534	3000769	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042528	3000503	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042535	3000769	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042534	3000769	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042525	3000503	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB transmembrane domain	8042535	3000769	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB TolC docking domain (DN and DC subdomains)	8042531	3000526	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB TolC docking domain (DN and DC subdomains)	8042533	3000526	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042525	3000503	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Multidrug efflux transporter AcrB pore domain PN1, PN2, PC1 and PC2 subdomains	8042529	3000503	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	e5v5sA1	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	e5v5sB1	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	e5v5sC1	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)
K	ACR_tran_4th	e5v5sK1	A: alpha bundles	X: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	H: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	T: Multidrug efflux transporter AcrB transmembrane domain	F: ACR_tran_4th	ECOD (1.6)
K	ACR_tran_1st	e5v5sK4	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_1st	ECOD (1.6)
K	ACR_tran_5th	e5v5sK8	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_5th	ECOD (1.6)
K	ACR_tran_3rd	e5v5sK2	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_3rd	ECOD (1.6)
K	ACR_tran_6th	e5v5sK7	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_6th	ECOD (1.6)
K	ACR_tran_2nd	e5v5sK6	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB TolC docking domain	F: ACR_tran_2nd	ECOD (1.6)
K	ACR_tran_6th_1	e5v5sK3	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB TolC docking domain	F: ACR_tran_6th_1	ECOD (1.6)
L	ACR_tran_4th	e5v5sL2	A: alpha bundles	X: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	H: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	T: Multidrug efflux transporter AcrB transmembrane domain	F: ACR_tran_4th	ECOD (1.6)
L	ACR_tran_1st	e5v5sL7	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_1st	ECOD (1.6)
L	ACR_tran_5th	e5v5sL5	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_5th	ECOD (1.6)
L	ACR_tran_3rd	e5v5sL1	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_3rd	ECOD (1.6)
L	ACR_tran_6th	e5v5sL6	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_6th	ECOD (1.6)
L	ACR_tran_2nd	e5v5sL3	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB TolC docking domain	F: ACR_tran_2nd	ECOD (1.6)
L	ACR_tran_6th_1	e5v5sL4	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB TolC docking domain	F: ACR_tran_6th_1	ECOD (1.6)
J	ACR_tran_4th	e5v5sJ6	A: alpha bundles	X: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	H: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	T: Multidrug efflux transporter AcrB transmembrane domain	F: ACR_tran_4th	ECOD (1.6)
J	ACR_tran_1st	e5v5sJ5	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_1st	ECOD (1.6)
J	ACR_tran_5th	e5v5sJ3	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_5th	ECOD (1.6)
J	ACR_tran_3rd	e5v5sJ8	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_3rd	ECOD (1.6)
J	ACR_tran_6th	e5v5sJ4	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: ACR_tran_6th	ECOD (1.6)
J	ACR_tran_2nd	e5v5sJ1	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB TolC docking domain	F: ACR_tran_2nd	ECOD (1.6)
J	ACR_tran_6th_1	e5v5sJ2	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB TolC docking domain	F: ACR_tran_6th_1	ECOD (1.6)
D	PRK15030_2nd	e5v5sD1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PRK15030_2nd	ECOD (1.6)
D	HlyD_D23_C_1	e5v5sD3	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: HlyD_D23_C_1	ECOD (1.6)
D	HlyD_2nd	e5v5sD2	A: alpha bundles	X: helical hairpin of HlyD-like secretion proteins (From Topology)	H: helical hairpin of HlyD-like secretion proteins (From Topology)	T: helical hairpin of HlyD-like secretion proteins	F: HlyD_2nd	ECOD (1.6)
D	HlyD_1st	e5v5sD4	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Single hybrid motif	F: HlyD_1st	ECOD (1.6)
E	PRK15030_2nd	e5v5sE4	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PRK15030_2nd	ECOD (1.6)
E	HlyD_D23_C_1	e5v5sE1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: HlyD_D23_C_1	ECOD (1.6)
E	HlyD_2nd	e5v5sE2	A: alpha bundles	X: helical hairpin of HlyD-like secretion proteins (From Topology)	H: helical hairpin of HlyD-like secretion proteins (From Topology)	T: helical hairpin of HlyD-like secretion proteins	F: HlyD_2nd	ECOD (1.6)
E	HlyD_1st	e5v5sE3	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Single hybrid motif	F: HlyD_1st	ECOD (1.6)
F	PRK15030_2nd	e5v5sF3	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PRK15030_2nd	ECOD (1.6)
F	HlyD_D23_C_1	e5v5sF1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: HlyD_D23_C_1	ECOD (1.6)
F	HlyD_2nd	e5v5sF2	A: alpha bundles	X: helical hairpin of HlyD-like secretion proteins (From Topology)	H: helical hairpin of HlyD-like secretion proteins (From Topology)	T: helical hairpin of HlyD-like secretion proteins	F: HlyD_2nd	ECOD (1.6)
F	HlyD_1st	e5v5sF4	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Single hybrid motif	F: HlyD_1st	ECOD (1.6)
H	PRK15030_2nd	e5v5sH2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PRK15030_2nd	ECOD (1.6)
H	HlyD_D23_C_1	e5v5sH4	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: HlyD_D23_C_1	ECOD (1.6)
H	HlyD_2nd	e5v5sH1	A: alpha bundles	X: helical hairpin of HlyD-like secretion proteins (From Topology)	H: helical hairpin of HlyD-like secretion proteins (From Topology)	T: helical hairpin of HlyD-like secretion proteins	F: HlyD_2nd	ECOD (1.6)
H	HlyD_1st	e5v5sH3	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Single hybrid motif	F: HlyD_1st	ECOD (1.6)
I	PRK15030_2nd	e5v5sI2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PRK15030_2nd	ECOD (1.6)
I	HlyD_D23_C_1	e5v5sI4	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: HlyD_D23_C_1	ECOD (1.6)
I	HlyD_2nd	e5v5sI3	A: alpha bundles	X: helical hairpin of HlyD-like secretion proteins (From Topology)	H: helical hairpin of HlyD-like secretion proteins (From Topology)	T: helical hairpin of HlyD-like secretion proteins	F: HlyD_2nd	ECOD (1.6)
I	HlyD_1st	e5v5sI1	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Single hybrid motif	F: HlyD_1st	ECOD (1.6)
G	PRK15030_2nd	e5v5sG3	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PRK15030_2nd	ECOD (1.6)
G	HlyD_D23_C_1	e5v5sG1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: HlyD_D23_C_1	ECOD (1.6)
G	HlyD_2nd	e5v5sG4	A: alpha bundles	X: helical hairpin of HlyD-like secretion proteins (From Topology)	H: helical hairpin of HlyD-like secretion proteins (From Topology)	T: helical hairpin of HlyD-like secretion proteins	F: HlyD_2nd	ECOD (1.6)
G	HlyD_1st	e5v5sG2	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Single hybrid motif	F: HlyD_1st	ECOD (1.6)

AMR Gene: CARD Annotation CARD Database Homepage

Chains	Accession	Short Name	Description	Provenance Source (Version)
J, K, L	ARO:3000216	acrB	Protein subunit of AcrA-AcrB-TolC multidrug efflux complex. AcrB functions as a herterotrimer which forms the inner membrane component and is primarily responsible for substrate recognition and energy transduction by acting as a drug/proton antiporter.	CARD (4.0.1)

AMR Gene Family: CARD Annotation CARD Database Homepage

Chains	Accession	Gene Family	Drug Class	Resistance Machanism	Provenance Source (Version)
J, K, L	ARO:0010004	resistance-nodulation-cell division (RND) antibiotic efflux pump	fluoroquinolone antibiotic, cephalosporin, glycylcycline, penicillin beta-lactam, tetracycline antibiotic, rifamycin antibiotic, phenicol antibiotic, disinfecting agents and antiseptics	antibiotic efflux	CARD (4.0.1)
J, K, L	ARO:0010004	resistance-nodulation-cell division (RND) antibiotic efflux pump	fluoroquinolone antibiotic, cephalosporin, glycylcycline, penicillin beta-lactam, tetracycline antibiotic, rifamycin antibiotic, phenicol antibiotic, disinfecting agents and antiseptics	antibiotic efflux	CARD (4.0.1)
D, E, F, G, H D, E, F, G, H, I	ARO:0010004	resistance-nodulation-cell division (RND) antibiotic efflux pump	fluoroquinolone antibiotic, cephalosporin, glycylcycline, penicillin beta-lactam, tetracycline antibiotic, rifamycin antibiotic, phenicol antibiotic, disinfecting agents and antiseptics	antibiotic efflux	CARD (4.0.1)
D, E, F, G, H D, E, F, G, H, I	ARO:0010004	resistance-nodulation-cell division (RND) antibiotic efflux pump	fluoroquinolone antibiotic, cephalosporin, glycylcycline, penicillin beta-lactam, tetracycline antibiotic, rifamycin antibiotic, phenicol antibiotic, disinfecting agents and antiseptics	antibiotic efflux	CARD (4.0.1)

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
J, K, L	PF00873	AcrB/AcrD/AcrF family (ACR_tran)	AcrB/AcrD/AcrF family	-	Family
D, E, F, G, H D, E, F, G, H, I	PF25876	RND MFP, alpha-helical hairpin domain (HH_MFP_RND)	RND MFP, alpha-helical hairpin domain	This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. The most characterized MFP AcrA connects the ...	This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. The most characterized MFP AcrA connects the outer membrane factor TolC and the resistance- nodulation-division-type efflux transporter AcrB, which is a major multidrug efflux pump in Escherichia coli [1]. The alpha -helical hairpin domain of AcrA shows conformational flexibility, which has potential mechanistic significance in coupling between AcrA conformations and TolC channel opening [1].	Domain
D, E, F, G, H D, E, F, G, H, I	PF25917	RND MFP, barrel-sandwich hybrid domain (BSH_RND)	RND MFP, barrel-sandwich hybrid domain	This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. The most characterized MFP AcrA connects the ...	This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. The most characterized MFP AcrA connects the outer membrane factor TolC and the resistance-nodulation-division-type efflux transporter AcrB, which is a major multidrug efflux pump in Escherichia coli [1]. The barrel-sandwich hybrid domain is an important structural feature found in membrane fusion proteins. This domain plays a crucial role in the assembly and function of tripartite drug efflux systems [2]. It is involved in interactions with the other components of the RND pumps.	Domain
D, E, F, G, H D, E, F, G, H, I	PF25967	RND MFPs, C-terminal permuted SH3 domain (RND-MFP_C)	RND MFPs, C-terminal permuted SH3 domain	This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. The most characterized MFP AcrA connects the ...	This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. The most characterized MFP AcrA connects the outer membrane factor TolC and the resistance- nodulation-division-type efflux transporter AcrB, which is a major multidrug efflux pump in Escherichia coli [1]. Another member MexA, a Pseudomonas aeruginosa homolog of AcrA, is a component of the tripartite multidrug efflux system MexAB-OprM which is a major factor for antibiotic resistance by exporting a large variety of antimicrobial compounds [2]. The domain represented by this entry folds into an open barrel with a circularly permuted topology of SH3-like barrels. This domain is involved in interactions with efflux pump membrane transporter.	Domain
D, E, F, G, H D, E, F, G, H, I	PF25944	RND MFPs, beta-barrel domain (Beta-barrel_RND)	RND MFPs, beta-barrel domain	This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. The most characterized MFP AcrA connects the ...	This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. The most characterized MFP AcrA connects the outer membrane factor TolC and the resistance- nodulation-division-type efflux transporter AcrB, which is a major multidrug efflux pump in Escherichia coli [1,2]. The domain represented in this entry folds into a six-stranded closed beta-barrel with a greek-key topology which has a structural similarity to the C-terminal domain of alanine racemase. This domain is interrupted by the barrel-sandwich hybrid domain which is inserted after the first beta-strand of the barrel. This model does not include the N-terminal strand.	Domain

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 bile acid transmembrane transporter activity monoatomic ion channel activity monoatomic ion transmembrane transporter activity efflux transmembrane transporter 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 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 iron chelate 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
J, K, L	Multidrug efflux pump subunit AcrB	alkane transmembrane transporter activity transporter activity transmembrane transporter activity lipid transporter activity lipid transmembrane transporter activity monocarboxylic acid transmembrane transporter activity carboxylic acid transmembrane transporter activity bile acid transmembrane transporter activity efflux transmembrane transporter activity xenobiotic transmembrane transporter activity identical protein binding protein binding binding enterobactin transmembrane transporter activity alkane transmembrane transporter activity transporter activity transmembrane transporter activity lipid transporter activity lipid transmembrane transporter activity monocarboxylic acid transmembrane transporter activity carboxylic acid transmembrane transporter activity bile acid transmembrane transporter activity efflux transmembrane transporter activity xenobiotic transmembrane transporter activity identical protein binding protein binding binding enterobactin transmembrane transporter activity siderophore-iron transmembrane transporter activity iron chelate 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 organic anion transport 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 organic anion transport carboxylic acid transport lipid localization lipid transport organic acid transport monocarboxylic acid transport fatty acid transport macromolecule localization alkane transport response to antibiotic bile acid and bile salt transport organic hydroxy compound transport siderophore transport iron ion transport metal ion transport enterobactin transport transition metal ion transport monoatomic ion transport monoatomic cation transport iron coordination entity transport	cellular anatomical structure membrane protein-containing complex efflux pump complex transmembrane transporter complex membrane protein complex transporter complex cell periphery plasma membrane cell surface periplasmic side of plasma membrane external side of plasma membrane side of membrane
D, E, F, G, H D, E, F, G, H, I	Multidrug efflux pump subunit AcrA	alkane transmembrane transporter activity transporter activity transmembrane transporter activity lipid transporter activity lipid transmembrane transporter activity monocarboxylic acid transmembrane transporter activity carboxylic acid transmembrane transporter activity bile acid transmembrane transporter activity identical protein binding protein binding binding	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 organic anion transport 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 organic anion transport carboxylic acid transport lipid localization lipid transport organic acid transport monocarboxylic acid transport fatty acid transport macromolecule localization alkane transport response to antibiotic bile acid and bile salt transport organic hydroxy compound transport	protein-containing complex cellular anatomical structure efflux pump complex transmembrane transporter complex membrane membrane protein complex transporter complex cell periphery plasma membrane cell surface periplasmic side of plasma membrane external side of plasma membrane side of membrane outer membrane-bounded periplasmic space protein-containing complex cellular anatomical structure efflux pump complex transmembrane transporter complex membrane membrane protein complex transporter complex cell periphery plasma membrane cell surface periplasmic side of plasma membrane external side of plasma membrane side of membrane outer membrane-bounded periplasmic space cell envelope periplasmic space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR010130	Type I secretion outer membrane protein, TolC	Family
A, B, C	IPR051906	Outer membrane protein TolC-like	Family
A, B, C	IPR003423	Outer membrane efflux protein	Family
J, K, L	IPR027463	Multidrug efflux transporter AcrB TolC docking domain, DN/DC subdomains	Homologous Superfamily
J, K, L	IPR001036	Acriflavin resistance protein	Family
J, K, L	IPR004764	Multidrug resistance protein MdtF-like	Family
D, E, F, G, H D, E, F, G, H, I	IPR006143	RND efflux pump, membrane fusion protein	Family
D, E, F, G, H D, E, F, G, H, I	IPR043602	CusB-like_dom_1	Unknown
D, E, F, G, H D, E, F, G, H, I	IPR051160	MFP_Efflux	Unknown
D, E, F, G, H D, E, F, G, H, I	IPR032317	CusB_D23	Unknown

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	OPM	Transmembrane	Alpha-helical polytopic	Resistance-nodulation-cell division	Hydrophobe/amphiphile efflux-1 family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Multi-Drug Efflux Transporters	AcrABZ-TolC tripartite multi drug efflux pump with bound puromycin (asymmetric structure)