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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

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

X: Zincin-like
H: Metalloproteases ("zincins") catalytic domain
T: Metalloproteases ("zincins") catalytic domain
F: Peptidase_M48,Peptidase_M48_N

PF01435 PF16491

Representatives:

e4aw6A1[A:2-285,A:322-472] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CAAX PRENYL PROTEASE 1 HOMOLOG ; ligands: PC1,ZN ; X-RAY DIFFRACTION 3.40Å

e2yptA1[A:2-285,A:322-472] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CAAX PRENYL PROTEASE 1 HOMOLOG ; ligands: ZN ; X-RAY DIFFRACTION 3.80Å

e4il3B1[B:11-446] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ste24p ; ligands: ZN ; X-RAY DIFFRACTION 3.100Å

e4aw6B1[B:10-285,B:322-472] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CAAX PRENYL PROTEASE 1 HOMOLOG ; ligands: PC1,ZN ; X-RAY DIFFRACTION 3.40Å

e4aw6D1[D:10-285,D:322-471] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CAAX PRENYL PROTEASE 1 HOMOLOG ; ligands: PC1,ZN ; X-RAY DIFFRACTION 3.40Å

e4aw6E1[E:10-285,E:322-471] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CAAX PRENYL PROTEASE 1 HOMOLOG ; ligands: PC1,ZN ; X-RAY DIFFRACTION 3.40Å

e2yptB1[B:10-285,B:322-472] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CAAX PRENYL PROTEASE 1 HOMOLOG ; ligands: ZN ; X-RAY DIFFRACTION 3.80Å

e2yptD1[D:10-285,D:322-471] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CAAX PRENYL PROTEASE 1 HOMOLOG ; ligands: ZN ; X-RAY DIFFRACTION 3.80Å

e2yptE1[E:10-285,E:323-471] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CAAX PRENYL PROTEASE 1 HOMOLOG ; ligands: ZN ; X-RAY DIFFRACTION 3.80Å

e4il3A2[A:9-445] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ste24p ; ligands: ZN ; X-RAY DIFFRACTION 3.100Å

e5sytA1[A:10-480] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CAAX prenyl protease 1 homolog ; ligands: C8E,CXE,DMS,GOL,PC1,PEG,SO4,ZN ; X-RAY DIFFRACTION 2.000Å

e6bh8B1[B:16-283,B:323-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CAAX prenyl protease 1 homolog ; ligands: C8E,RDF,ZN ; X-RAY DIFFRACTION 3.85Å

e6bh8A1[A:16-60,A:100-283,A:323-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CAAX prenyl protease 1 homolog ; ligands: C8E,RDF,ZN ; X-RAY DIFFRACTION 3.85Å

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.

few secondary structure elementsstabilized by cofactors or disulfides

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