Annotations: 2V4D

Re-refinement of MexA adaptor protein

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
AMR Gene: CARD Annotation
AMR Gene Family: CARD Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
B	SCOP2 Family	HlyD-like secretion proteins	8028933	4003003	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	HlyD C-terminal domain-like	8092210	3002572	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Single hybrid motif	8055550	3001880	SCOP2 (2022-06-29)
C	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	HlyD C-terminal domain-like	8092210	3002572	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	HlyD C-terminal domain-like	8092210	3002572	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	HlyD C-terminal domain-like	8092210	3002572	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	HlyD C-terminal domain-like	8092210	3002572	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	HlyD C-terminal domain-like	8092210	3002572	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	HlyD C-terminal domain-like	8092210	3002572	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	HlyD C-terminal domain-like	8092210	3002572	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	HlyD C-terminal domain-like	8092210	3002572	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	HlyD C-terminal domain-like	8092210	3002572	SCOP2B (2022-06-29)
M	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	SCOP2B (2022-06-29)
M	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
M	SCOP2B Superfamily	HlyD beta-barrel domain-like	8041312	3002000	SCOP2B (2022-06-29)
M	SCOP2B Superfamily	HlyD C-terminal domain-like	8092210	3002572	SCOP2B (2022-06-29)
M	SCOP2B Superfamily	Single hybrid motif	8055550	3001880	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	Inositol_P	e2v4dA1	A: alpha arrays	X: TAZ domain	H: TAZ domain	T: Lipocalins	F: Inositol_P	ECOD (v295.2)
B	Beta-barrel_RND	e2v4dB4	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Beta-barrel_RND	ECOD (v295.2)
C	Glyoxalase	e2v4dC8	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Glyoxalase	ECOD (v295.2)
D	BSH_RND	e2v4dD4	A: alpha arrays	X: DEATH domain	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: BSH_RND	ECOD (v295.2)
E	Glyoxalase	e2v4dE8	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Glyoxalase	ECOD (v295.2)
F	Glyoxalase	e2v4dF8	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Glyoxalase	ECOD (v295.2)
G	Glyoxalase	e2v4dG8	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Glyoxalase	ECOD (v295.2)
H	Glyoxalase	e2v4dH8	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Glyoxalase	ECOD (v295.2)
I	Glyoxalase	e2v4dI8	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Glyoxalase	ECOD (v295.2)
J	Glyoxalase	e2v4dJ8	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Glyoxalase	ECOD (v295.2)
K	Glyoxalase	e2v4dK8	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Glyoxalase	ECOD (v295.2)
L	Glyoxalase	e2v4dL8	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Glyoxalase	ECOD (v295.2)
M	Glyoxalase	e2v4dM8	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Glyoxalase	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
A	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
A	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
B	2.40.420.20	Mainly Beta	Beta Barrel	conserved putative lor/sdh protein from methanococcus maripaludis s2 fold		CATH (4.3.0)
B	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
B	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
B	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
C	2.40.420.20	Mainly Beta	Beta Barrel	conserved putative lor/sdh protein from methanococcus maripaludis s2 fold		CATH (4.3.0)
C	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
C	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
C	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
D	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
D	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
D	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
E	2.40.420.20	Mainly Beta	Beta Barrel	conserved putative lor/sdh protein from methanococcus maripaludis s2 fold		CATH (4.3.0)
E	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
E	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
E	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
F	2.40.420.20	Mainly Beta	Beta Barrel	conserved putative lor/sdh protein from methanococcus maripaludis s2 fold		CATH (4.3.0)
F	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
F	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
F	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
G	2.40.420.20	Mainly Beta	Beta Barrel	conserved putative lor/sdh protein from methanococcus maripaludis s2 fold		CATH (4.3.0)
G	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
G	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
G	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
H	2.40.420.20	Mainly Beta	Beta Barrel	conserved putative lor/sdh protein from methanococcus maripaludis s2 fold		CATH (4.3.0)
H	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
H	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
H	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
I	2.40.420.20	Mainly Beta	Beta Barrel	conserved putative lor/sdh protein from methanococcus maripaludis s2 fold		CATH (4.3.0)
I	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
I	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
I	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
J	2.40.420.20	Mainly Beta	Beta Barrel	conserved putative lor/sdh protein from methanococcus maripaludis s2 fold		CATH (4.3.0)
J	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
J	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
J	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
K	2.40.420.20	Mainly Beta	Beta Barrel	conserved putative lor/sdh protein from methanococcus maripaludis s2 fold		CATH (4.3.0)
K	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
K	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
K	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
L	2.40.420.20	Mainly Beta	Beta Barrel	conserved putative lor/sdh protein from methanococcus maripaludis s2 fold		CATH (4.3.0)
L	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
L	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
L	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
M	2.40.420.20	Mainly Beta	Beta Barrel	conserved putative lor/sdh protein from methanococcus maripaludis s2 fold		CATH (4.3.0)
M	2.40.30.170	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
M	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
M	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)

AMR Gene: CARD Annotation CARD Database Homepage

Chains	Accession	Short Name	Description	Provenance Source (Version)
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	ARO:3000377	MexA	MexA is the membrane fusion protein of the MexAB-OprM multidrug efflux complex.	CARD (4.0.2)

AMR Gene Family: CARD Annotation CARD Database Homepage

Chains	Accession	Gene Family	Drug Class	Resistance Machanism	Provenance Source (Version)
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	ARO:0010004	resistance-nodulation-cell division (RND) antibiotic efflux pump	macrolide antibiotic, fluoroquinolone antibiotic, monobactam, carbapenem, cephalosporin, penicillin beta-lactam, tetracycline antibiotic, peptide antibiotic, aminocoumarin antibiotic, diaminopyrimidine antibiotic, sulfonamide antibiotic, phenicol antibiotic, nonribosomal peptide antibiotics	antibiotic efflux	CARD (4.0.2)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	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
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	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
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	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
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	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, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	MULTIDRUG RESISTANCE PROTEIN MEXA	efflux transmembrane transporter activity transporter activity transmembrane transporter activity identical protein binding protein binding binding	cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly protein homooligomerization cellular process cellular component organization or biogenesis response to stimulus response to chemical response to antibiotic	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	IPR058194	Multidrug resistance protein MexA	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	IPR058626	Multidrug resistance protein MdtA-like, beta-barrel domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	IPR058624	Multidrug resistance protein MdtA-like, alpha-helical hairpin domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	IPR058627	Multidrug resistance protein MdtA-like, C-terminal permuted SH3 domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	IPR006143	RND efflux pump, membrane fusion protein	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M	IPR058625	Multidrug resistance protein MdtA-like, barrel-sandwich hybrid domain	Domain