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X - Possible homology level

H - Homology level

T - Topology level

F - Family level

* - Provisional representative

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Evolutionary classification of protein domain structures

alpha arraysalpha-helix arrays with mainly perpendicular helices

alpha bundlesalpha-helix bundles with mainly parallel helices

X: Multidrug efflux transporter AcrB transmembrane domain
H: Multidrug efflux transporter AcrB transmembrane domain
T: Multidrug efflux transporter AcrB transmembrane domain
F: ACR_tran

PF00873 CL0322

Representatives:

e4k0jA1[A:4-41,A:324-487] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAVY METAL CATION TRICOMPONENT EFFLUX PUMP ZNEA(CZCA- LIKE) ; X-RAY DIFFRACTION 3.0Å

e4k0jA5[A:502-549,A:849-1018] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAVY METAL CATION TRICOMPONENT EFFLUX PUMP ZNEA(CZCA- LIKE) ; X-RAY DIFFRACTION 3.0Å

e1iwgA1[A:7-37,A:331-498] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACRB ; X-RAY DIFFRACTION 3.5Å

e3w9jB21[B:1-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug resistance protein MexB ; ligands: LMT ; X-RAY DIFFRACTION 3.150Å

e3w9iE21[E:1-37,E:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug resistance protein MexB ; ligands: LMT ; X-RAY DIFFRACTION 2.700Å

e3w9jF19[F:505-566,F:863-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug resistance protein MexB ; ligands: LMT ; X-RAY DIFFRACTION 3.150Å

e3w9jC19[C:505-566,C:863-1030] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug resistance protein MexB ; X-RAY DIFFRACTION 3.150Å

e4dx7A10[A:505-566,A:864-1042] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acriflavine resistance protein B ; ligands: D10,D12,LMT ; X-RAY DIFFRACTION 2.250Å

e3w9iC19[C:505-566,C:863-1030] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug resistance protein MexB ; X-RAY DIFFRACTION 2.700Å

e3w9iB19[B:505-566,B:863-1030] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug resistance protein MexB ; ligands: LMT ; X-RAY DIFFRACTION 2.700Å

e3w9jE19[E:505-566,E:863-1030] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug resistance protein MexB ; ligands: LMT ; X-RAY DIFFRACTION 3.150Å

e3w9jB19[B:505-566,B:863-1030] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug resistance protein MexB ; ligands: LMT ; X-RAY DIFFRACTION 3.150Å

e3w9iE19[E:505-566,E:863-1030] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug resistance protein MexB ; ligands: LMT ; X-RAY DIFFRACTION 2.700Å

e4k0eC5[C:4-41,C:313-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heavy metal cation tricomponent efflux pump ZneA(CzcA-like) ; X-RAY DIFFRACTION 3.7Å

e4k0jC5[C:4-41,C:313-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAVY METAL CATION TRICOMPONENT EFFLUX PUMP ZNEA(CZCA- LIKE) ; X-RAY DIFFRACTION 3.0Å

e4k0jD5[D:4-41,D:313-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAVY METAL CATION TRICOMPONENT EFFLUX PUMP ZNEA(CZCA- LIKE) ; X-RAY DIFFRACTION 3.0Å

e4k0jE5[E:4-41,E:313-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAVY METAL CATION TRICOMPONENT EFFLUX PUMP ZNEA(CZCA- LIKE) ; X-RAY DIFFRACTION 3.0Å

e4k0jF5[F:4-41,F:313-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAVY METAL CATION TRICOMPONENT EFFLUX PUMP ZNEA(CZCA- LIKE) ; X-RAY DIFFRACTION 3.0Å

e4k0eC1[C:466-510,C:810-1017] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heavy metal cation tricomponent efflux pump ZneA(CzcA-like) ; X-RAY DIFFRACTION 3.7Å

e4k0jC1[C:466-510,C:810-1017] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAVY METAL CATION TRICOMPONENT EFFLUX PUMP ZNEA(CZCA- LIKE) ; X-RAY DIFFRACTION 3.0Å

e4k0jD1[D:466-510,D:810-1018] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAVY METAL CATION TRICOMPONENT EFFLUX PUMP ZNEA(CZCA- LIKE) ; X-RAY DIFFRACTION 3.0Å

e4k0jF1[F:466-510,F:810-1017] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAVY METAL CATION TRICOMPONENT EFFLUX PUMP ZNEA(CZCA- LIKE) ; X-RAY DIFFRACTION 3.0Å

e4mt1A6[A:2-37,A:329-496] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Drug efflux protein ; X-RAY DIFFRACTION 3.540Å

e4mt1A7[A:497-549,A:842-1040] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Drug efflux protein ; X-RAY DIFFRACTION 3.540Å

e3k0iA1[A:5-41,A:329-504] Image Pymol Jmol Links: PDB, SCOP, CATH

Cation efflux system protein cusA ; X-RAY DIFFRACTION 4.116Å

e3ksoA1[A:5-41,A:329-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein cusA ; X-RAY DIFFRACTION 4.350Å

e3kssA1[A:5-41,A:329-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein cusA ; X-RAY DIFFRACTION 3.88Å

e3k0iA8[A:516-564,A:869-1039] Image Pymol Jmol Links: PDB, SCOP, CATH

Cation efflux system protein cusA ; X-RAY DIFFRACTION 4.116Å

e3kssA8[A:516-564,A:869-1039] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein cusA ; X-RAY DIFFRACTION 3.88Å

e3w9iF6[F:505-566,F:863-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug resistance protein MexB ; ligands: LMT ; X-RAY DIFFRACTION 2.700Å

e3w9iF8[F:1-37,F:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug resistance protein MexB ; ligands: LMT ; X-RAY DIFFRACTION 2.700Å

e4u95B8[B:1-37,B:331-498] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 2.0Å

e4u95C8[C:1-37,C:331-498] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 2.0Å

e4u96B8[B:1-37,B:331-498] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.2Å

e4u96C8[C:1-37,C:331-498] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.2Å

e4u95B3[B:499-552,B:845-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.0Å

e4u95C3[C:499-552,C:845-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.0Å

e4u96B3[B:499-552,B:845-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.2Å

e4u96C3[C:499-552,C:845-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.2Å

e4dnrA5[A:1-41,A:328-504] Image Pymol Jmol Links: PDB, SCOP, CATH

Cation efflux system protein CusA ; X-RAY DIFFRACTION 3.680Å

e4dnrA1[A:517-564,A:862-1043] Image Pymol Jmol Links: PDB, SCOP, CATH

Cation efflux system protein CusA ; X-RAY DIFFRACTION 3.680Å

e3ksoA8[A:515-564,A:869-1038] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein cusA ; X-RAY DIFFRACTION 4.350Å

e4dx6A7[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acriflavine resistance protein B ; ligands: LMT ; X-RAY DIFFRACTION 2.290Å

e4cdiA6[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACRIFLAVINE RESISTANCE PROTEIN B ; X-RAY DIFFRACTION 3.69Å

e3nocA3[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACRIFLAVINE RESISTANCE PROTEIN B ; X-RAY DIFFRACTION 2.7Å

e4u8vA7[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.298Å

e4u8vB8[B:1-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.298Å

e4u8vC4[C:1-37,C:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 2.298Å

e4u96A4[A:1-37,A:331-505] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.2Å

e4c48A6[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACRIFLAVINE RESISTANCE PROTEIN B ; ligands: LMT ; X-RAY DIFFRACTION 3.30Å

e4dx5A3[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acriflavine resistance protein B ; ligands: D10,D12,LMT ; X-RAY DIFFRACTION 1.900Å

e2j8sA7[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACRIFLAVINE RESISTANCE PROTEIN B ; ligands: LMT,LMU ; X-RAY DIFFRACTION 2.540Å

e4u95A8[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.0Å

e3d9bA6[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACRIFLAVINE RESISTANCE PROTEIN B ; X-RAY DIFFRACTION 3.42Å

e4u8yC8[C:1-37,C:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.099Å

e4u8yB8[B:1-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 2.099Å

e4u8yA1[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 2.099Å

e2gifB6[B:2-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acriflavine resistance protein B ; X-RAY DIFFRACTION 2.9Å

e4dntA4[A:1-41,A:328-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein CusA ; X-RAY DIFFRACTION 3.100Å

e4dopA6[A:1-41,A:328-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein CusA ; X-RAY DIFFRACTION 4.200Å

e4dntA1[A:517-564,A:862-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein CusA ; X-RAY DIFFRACTION 3.100Å

e4dopA4[A:517-564,A:862-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein CusA ; X-RAY DIFFRACTION 4.200Å

e3t51A8[A:4-41,A:329-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein CusA ; X-RAY DIFFRACTION 3.9Å

e3t53A8[A:4-41,A:329-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein CusA ; X-RAY DIFFRACTION 3.370Å

e3t56A7[A:4-41,A:329-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein CusA ; X-RAY DIFFRACTION 3.420Å

e3t51A3[A:517-553,A:858-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein CusA ; X-RAY DIFFRACTION 3.9Å

e3t53A6[A:517-553,A:858-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein CusA ; X-RAY DIFFRACTION 3.370Å

e3t56A6[A:517-553,A:858-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cation efflux system protein CusA ; X-RAY DIFFRACTION 3.420Å

e4ziwA5[A:2-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.399Å

e4ziwC5[C:2-37,C:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.399Å

e4ziwD6[D:2-37,D:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.399Å

e4ziwE7[E:2-37,E:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.399Å

e4ziwF8[F:2-37,F:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.399Å

e4zjqA2[A:2-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.59Å

e4zjqB6[B:2-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.59Å

e4zjqC7[C:2-37,C:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.59Å

e4zjqD5[D:2-37,D:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.59Å

e4zjqE5[E:2-37,E:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.59Å

e4zjqF6[F:2-37,F:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.59Å

e4zitA6[A:2-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.29Å

e4zitB1[B:2-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.29Å

e4zitC1[C:2-37,C:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.29Å

e4zitD2[D:2-37,D:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.29Å

e4zitE4[E:2-37,E:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.29Å

e4zitF3[F:2-37,F:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.29Å

e4zivA6[A:2-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.16Å

e4zivC8[C:2-37,C:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.16Å

e4zivD4[D:2-37,D:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.16Å

e4zivE8[E:2-37,E:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.16Å

e4ziwB5[B:2-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.399Å

e4zjlB6[B:2-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.47Å

e4zjlC8[C:2-37,C:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.47Å

e4zjlD3[D:2-37,D:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.47Å

e4zjlE7[E:2-37,E:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.47Å

e4zjlF3[F:2-37,F:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.47Å

e4zjoA7[A:2-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.6Å

e4zjoB1[B:2-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.6Å

e4zjoC8[C:2-37,C:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.6Å

e4zjoD5[D:2-37,D:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.6Å

e4zjoE3[E:2-37,E:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.6Å

e4zivB6[B:2-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.16Å

e4zivF6[F:2-37,F:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.16Å

e4zjlA6[A:2-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.47Å

e4zjoF4[F:2-37,F:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.6Å

e4ziwA8[A:505-566,A:864-1039] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.399Å

e4ziwC7[C:505-566,C:864-1036] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.399Å

e4ziwD3[D:505-566,D:864-1039] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.399Å

e4ziwE5[E:505-566,E:864-1038] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.399Å

e4ziwF6[F:505-566,F:864-1038] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.399Å

e4zjqA1[A:505-566,A:864-1039] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.59Å

e4zjqB7[B:505-566,B:864-1038] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.59Å

e4zjqC2[C:505-566,C:864-1037] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.59Å

e4zjqD2[D:505-566,D:864-1039] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.59Å

e4zjqE7[E:505-566,E:864-1038] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.59Å

e4zjqF5[F:505-566,F:864-1038] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.59Å

e4zitA8[A:505-566,A:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.29Å

e4zitB7[B:505-566,B:869-1044] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.29Å

e4zitC5[C:505-566,C:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.29Å

e4zitD5[D:505-566,D:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.29Å

e4zitE7[E:505-566,E:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.29Å

e4zitF4[F:505-566,F:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.29Å

e4zivA4[A:505-566,A:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.16Å

e4zivC6[C:505-566,C:869-1045] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.16Å

e4zivD2[D:505-566,D:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.16Å

e4zivE3[E:505-566,E:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.16Å

e4ziwB7[B:505-566,B:864-1040] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.399Å

e4zjlB2[B:505-566,B:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.47Å

e4zjlC2[C:505-566,C:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.47Å

e4zjlD7[D:505-566,D:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.47Å

e4zjlE6[E:505-566,E:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.47Å

e4zjlF7[F:505-566,F:869-1044] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.47Å

e4zjoA6[A:505-566,A:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.6Å

e4zjoB3[B:505-566,B:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.6Å

e4zjoC2[C:505-566,C:869-1045] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.6Å

e4zjoD2[D:505-566,D:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.6Å

e4zjoE7[E:505-566,E:869-1043] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.6Å

e4zivB1[B:505-566,B:869-1047] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.16Å

e4zivF3[F:505-566,F:869-1047] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.16Å

e4zjlA1[A:505-566,A:869-1045] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT,NI ; X-RAY DIFFRACTION 3.47Å

e4zjoF3[F:505-566,F:869-1047] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: LMT ; X-RAY DIFFRACTION 3.6Å

e4zljA2[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.257Å

e4zljA4[A:505-566,A:869-1034] Image Pymol Jmol Links: PDB, SCOP, CATH

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.257Å

e4zlnA2[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.557Å

e4zllA2[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.36Å

e4zlnA1[A:505-566,A:864-1029] Image Pymol Jmol Links: PDB, SCOP, CATH

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.557Å

e4zllA5[A:505-566,A:869-1034] Image Pymol Jmol Links: PDB, SCOP, CATH

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.36Å

e5jmnA6[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D10,ETE,FUA,HEX,LMT,P3G ; X-RAY DIFFRACTION 2.3Å

e5jmnB8[B:1-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D10,D12,FUA,LMT,OCT,P3G,PTY ; X-RAY DIFFRACTION 2.3Å

e5jmnC7[C:1-37,C:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D12,FUA,HEX,LMT,OCT,PTY ; X-RAY DIFFRACTION 2.3Å

e5jmnA1[A:505-566,A:869-1034] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D12,ETE,LMT ; X-RAY DIFFRACTION 2.3Å

e5jmnB2[B:505-566,B:869-1034] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D10,LMT,PTY ; X-RAY DIFFRACTION 2.3Å

e5jmnC6[C:505-566,C:869-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D12,ETE,LMT,PTY ; X-RAY DIFFRACTION 2.3Å

e5nc5B5[B:1-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D10,D12,DD9,LMT ; X-RAY DIFFRACTION 3Å

e5nc5C7[C:1-37,C:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D10,D12,DD9,HEX,LMT ; X-RAY DIFFRACTION 3Å

e5nc5A1[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D10,D12,DD9,LMT ; X-RAY DIFFRACTION 3Å

e5nc5B4[B:505-566,B:869-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D10,D12,DD9,LMT ; X-RAY DIFFRACTION 3Å

e5nc5C8[C:505-566,C:869-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D10,D12,DD9 ; X-RAY DIFFRACTION 3Å

e5nc5A6[A:505-566,A:869-1044] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ligands: D10,D12,LMT ; X-RAY DIFFRACTION 3Å

e5v5sJ6[J:1-37,J:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5v5sK1[K:1-37,K:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5v5sL2[L:1-37,L:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5ng5K7[K:1-37,K:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5ng5L5[L:1-37,L:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5ng5J6[J:1-37,J:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5v5sJ7[J:505-566,J:869-1037] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5v5sK5[K:505-566,K:869-1037] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5v5sL8[L:505-566,L:869-1037] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5ng5K8[K:505-566,K:869-1037] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5ng5L7[L:505-566,L:869-1037] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5ng5J8[J:505-566,J:869-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5v78K4[K:1-37,K:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH

e5v78L2[L:1-37,L:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH

e5v78J5[J:1-37,J:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH

e5v78K1[K:505-566,K:869-1037] Image Pymol Jmol Links: PDB, SCOP, CATH

e5v78L8[L:505-566,L:869-1037] Image Pymol Jmol Links: PDB, SCOP, CATH

e5v78J1[J:505-566,J:869-1033] Image Pymol Jmol Links: PDB, SCOP, CATH

e5o66K8[K:1-37,K:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5o66L6[L:1-37,L:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5o66J4[J:1-37,J:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5o66K4[K:505-566,K:869-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5o66L4[L:505-566,L:869-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5o66J3[J:505-566,J:869-1044] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; ELECTRON MICROSCOPY

e5lq3A3[A:1-38,A:333-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5lq3B5[B:1-38,B:333-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5lq3D8[D:1-38,D:333-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5lq3E6[E:1-38,E:333-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5lq3A2[A:504-564,A:859-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5lq3B4[B:504-564,B:859-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5lq3D4[D:504-564,D:859-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5lq3E8[E:504-564,E:859-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5lq3C8[C:1-38,C:333-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5lq3F6[F:1-38,F:333-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5lq3C3[C:504-564,C:859-1035] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5lq3F5[F:504-564,F:859-1035] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.550Å

e5t0oA8[A:1-38,A:333-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.150Å

e5t0oB4[B:1-38,B:333-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.150Å

e5t0oC7[C:1-38,C:333-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.150Å

e5t0oA2[A:504-564,A:859-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.150Å

e5t0oB7[B:504-564,B:859-1033] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.150Å

e5t0oC1[C:504-564,C:859-1035] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CmeB ; X-RAY DIFFRACTION 3.150Å

e5yilA1[A:1-37,A:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.00Å

e5yilA6[A:505-566,A:868-1041] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.00Å

e5yilB5[B:1-37,B:331-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Multidrug efflux pump subunit AcrB ; X-RAY DIFFRACTION 3.00Å

Previous Next

e1iwgA2[A:513-566,A:869-1036] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACRB ; X-RAY DIFFRACTION 3.5Å

e4k0eA1[A:4-41,A:325-487] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heavy metal cation tricomponent efflux pump ZneA(CzcA-like) ; X-RAY DIFFRACTION 3.7Å

e4k0eA5[A:502-550,A:849-1018] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heavy metal cation tricomponent efflux pump ZneA(CzcA-like) ; X-RAY DIFFRACTION 3.7Å

F: Unmapped domains

Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.

alpha superhelicesrepeating alpha-helix hairpins form a superhelix

alpha duplicates or obligate multimersalpha duplicates or monomers associate together to form a compact domain

alpha complex topologyalpha domain with complex and unique topology that cannot be described as array or bundle or superhelix

beta barrelssingle beta-sheet folded upon itself to form a barrel

beta meanderssingle beta-sheet with mainly meander topology

beta sandwichestwo beta-sheets stacked together to form a sandwich

beta duplicates or obligate multimersbeta duplicates or monomers associate together to form a compact domain

beta complex topologybeta domains with complex and unique topology that cannot be described as barrel or sandwich or meander

a+b two layersone alpha-helix layer and one beta-sheet layer

a+b three layersone mainly antiparallel beta-sheet layer sandwiched between two alpha-helix layers

a+b four layerstwo beta-sheet layers sandwiched between two alpha-helix layers

a+b complex topologyalpha and beta domain with complex and unique topology that cannot be described in layers

a+b duplicates or obligate multimersalpha and beta duplicates or monomers associated together to form a compact domain

a/b barrelsrepeating beta-alpha units form a barrel

a/b three-layered sandwichesrepeating beta-alpha units form a sandwich with a mainly parallel beta-sheet layer stacked between two alpha-helix layers

mixed a+b and a/balpha and beta domain consists of both a+b and a/b regions

few secondary structure elementsstabilized by cofactors or disulfides

extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes