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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

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

X: Immunoglobulin-like beta-sandwich
H: Immunoglobulin-related
T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like
F: Integrin_A_Ig_1

PF08441 CL0159

Representatives:

e1jv2A1[A:439-598] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN, ALPHA V ; ligands: CA,NAG ; X-RAY DIFFRACTION 3.1Å

e5es4A4[A:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-X ; ligands: NAG ; X-RAY DIFFRACTION 3.15Å

e5es4C4[C:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-X ; ligands: NAG ; X-RAY DIFFRACTION 3.15Å

e1l5gA1[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA V ; ligands: MN,NAG ; X-RAY DIFFRACTION 3.2Å

e1u8cA1[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-V ; ligands: CA,NAG,NDG ; X-RAY DIFFRACTION 3.1Å

e1m1xA1[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-V ; ligands: MN,NAG ; X-RAY DIFFRACTION 3.3Å

e3k6sA3[A:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-X ; ligands: NAG ; X-RAY DIFFRACTION 3.5Å

e3ijeA3[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: CA,NAG ; X-RAY DIFFRACTION 2.9Å

e3v4pA2[A:432-587] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-4 ; ligands: NAG ; X-RAY DIFFRACTION 3.15Å

e3fcsA4[A:452-604] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin, alpha 2b ; ligands: CA,IMD,NAG ; X-RAY DIFFRACTION 2.55Å

e3k6sC3[C:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-X ; ligands: NAG ; X-RAY DIFFRACTION 3.5Å

e3k6sE3[E:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-X ; ligands: NAG ; X-RAY DIFFRACTION 3.5Å

e3k6sG3[G:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-X ; ligands: NAG ; X-RAY DIFFRACTION 3.5Å

e3k71A3[A:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-X ; ligands: NAG ; X-RAY DIFFRACTION 3.95Å

e3k71C3[C:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-X ; ligands: NAG ; X-RAY DIFFRACTION 3.95Å

e3k71E3[E:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-X ; ligands: NAG ; X-RAY DIFFRACTION 3.95Å

e3k71G1[G:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-X ; ligands: NAG ; X-RAY DIFFRACTION 3.95Å

e3k72A3[A:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-X ; ligands: NAG ; X-RAY DIFFRACTION 3.7Å

e3k72C3[C:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-X ; ligands: NAG ; X-RAY DIFFRACTION 3.7Å

e3fcsC1[C:452-604] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin, alpha 2b ; ligands: CA,IMD,NAG ; X-RAY DIFFRACTION 2.55Å

e3v4vC1[C:432-580] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-4 ; ligands: NAG ; X-RAY DIFFRACTION 3.1Å

e3v4vA1[A:432-582] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-4 ; ligands: NAG ; X-RAY DIFFRACTION 3.1Å

e3v4pC1[C:432-581] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-4 ; ligands: NAG ; X-RAY DIFFRACTION 3.15Å

e4g1eA3[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-V ; ligands: CA,NAG,SO4 ; X-RAY DIFFRACTION 3.0Å

e4g1mA3[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: CA,NAG ; X-RAY DIFFRACTION 2.9Å

e3vi3A1[A:450-606] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-5 ; ligands: NAG ; X-RAY DIFFRACTION 2.90Å

e3vi4C1[C:450-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-5 ; ligands: NAG ; X-RAY DIFFRACTION 2.90Å

e3vi4A1[A:450-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-5 ; ligands: NAG ; X-RAY DIFFRACTION 2.90Å

e3vi3C1[C:450-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-5 ; ligands: NAG ; X-RAY DIFFRACTION 2.90Å

e4cakA1[A:452-604] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-IIb ; ligands: NAG ; ELECTRON MICROSCOPY

e4nehA1[A:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-X ; ligands: NAG ; X-RAY DIFFRACTION 2.75Å

e4mmxA4[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: MN,NAG ; X-RAY DIFFRACTION 3.32Å

e4mmyA2[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: MN,NAG ; X-RAY DIFFRACTION 3.18Å

e4nenA5[A:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-X ; X-RAY DIFFRACTION 2.9Å

e4mmzA5[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: MN,NA,NAG ; X-RAY DIFFRACTION 3.10Å

e4o02A3[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: NAG ; X-RAY DIFFRACTION 3.600Å

e4um8A2[A:439-594] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-V ; ligands: NAG,NI,SO4 ; X-RAY DIFFRACTION 2.85Å

e4um8C2[C:439-594] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA-V ; ligands: CL,NAG ; X-RAY DIFFRACTION 2.85Å

e4um9A2[A:439-594] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V heavy chain ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.50Å

e4um9C2[C:439-594] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V heavy chain ; ligands: MAN,NAG,SO4 ; X-RAY DIFFRACTION 2.50Å

e4irzA1[A:432-592] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN ALPHA4 SUBUNIT ; ligands: NAG ; X-RAY DIFFRACTION 2.84Å

e5es4G1[G:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-X ; ligands: NAG ; X-RAY DIFFRACTION 3.15Å

e5ffgA2[A:440-594] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: MAN,MES,NAG,PEG,SO4 ; X-RAY DIFFRACTION 2.25Å

e5ffoA2[A:440-596] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: MAN,NAG ; X-RAY DIFFRACTION 3.49Å

e5ffoE1[E:440-591] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: MAN,NAG ; X-RAY DIFFRACTION 3.49Å

e5es4E4[E:598-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-X ; ligands: NAG ; X-RAY DIFFRACTION 3.15Å

e5nemA1[A:439-594] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: MAN,NAG ; ELECTRON MICROSCOPY

e5nerA2[A:439-594] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: MAN,NAG ; ELECTRON MICROSCOPY

e5netA2[A:439-594] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: MAN,NAG ; ELECTRON MICROSCOPY

e5neuA1[A:439-594] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ELECTRON MICROSCOPY

e6avqA1[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ELECTRON MICROSCOPY

e6avrA3[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ELECTRON MICROSCOPY

e6avuA1[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ELECTRON MICROSCOPY

e6djpA1[A:439-593] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-v ; ligands: NAG ; ELECTRON MICROSCOPY

e6mk0A3[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Integrin alpha-V ; ligands: MN,NAG ; X-RAY DIFFRACTION 3.0Å

e6mslA3[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: BMA,MAN,MN,NAG ; X-RAY DIFFRACTION 3.1Å

e6msuA3[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: BMA,MAN,MN,NAG ; X-RAY DIFFRACTION 3.1Å

e6najA3[A:439-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: MN,NAG ; X-RAY DIFFRACTION 3.1Å

e6om1A1[A:440-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: BMA,MAN,NAG ; X-RAY DIFFRACTION 2.66Å

e6om1C2[C:440-599] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: BMA,MAN,NAG ; X-RAY DIFFRACTION 2.66Å

e6om1E1[E:440-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: BMA,MAN,NAG ; X-RAY DIFFRACTION 2.66Å

e6om1G1[G:440-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: BMA,MAN,NAG ; X-RAY DIFFRACTION 2.66Å

e6om2A2[A:440-598] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: BMA,GLY,MAN,NAG,PEG ; X-RAY DIFFRACTION 2.77Å

e6om2C2[C:440-596] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: BMA,GLY,MAN,NAG ; X-RAY DIFFRACTION 2.77Å

e6ujaA1[A:439-593] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ELECTRON MICROSCOPY

e6ujbA1[A:439-593] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ELECTRON MICROSCOPY

e6ujcA1[A:439-593] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ELECTRON MICROSCOPY

e7nwlA2[A:450-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-5 ; ELECTRON MICROSCOPY

e7cebA2[A:443-599] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-6 ; X-RAY DIFFRACTION 2.89Å

e7cecA2[A:443-599] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-6 ; ELECTRON MICROSCOPY

e7nxdA4[A:450-606] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-5 ; ligands: CA,NAG ; ELECTRON MICROSCOPY

e7usmA1[A:600-756] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-M ; ligands: NAG ; ELECTRON MICROSCOPY

e7uslA2[A:600-756] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-M ; ligands: NAG ; ELECTRON MICROSCOPY

e7y1tA2[A:440-454,A:474-588] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin alpha-V ; ligands: NAG ; ELECTRON MICROSCOPY

e7p2dA2[A:601-751] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Isoform 2 of Integrin alpha-M ; X-RAY DIFFRACTION 3.2Å

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.

X: Glycosyl hydrolase domain-like

some similarity with Ig fold

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