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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

X: Rossmann-like
H: Rossmann-related
T: S-adenosyl-L-methionine-dependent methyltransferases
F: Cons_hypoth95

PF03602 CL0063

Representatives:

e2fhpA1[A:1-182] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

METHYLASE, PUTATIVE ; X-RAY DIFFRACTION 1.6Å

e2fpoA1[A:10-192] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

METHYLASE YHHF ; ligands: CL ; X-RAY DIFFRACTION 2.05Å

e1ws6A1[A:15-185] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

METHYLTRANSFERASE ; X-RAY DIFFRACTION 2.5Å

e2esrA1[A:28-179] Image Pymol Jmol Links: PDB, SCOP, CATH

Methyltransferase ; X-RAY DIFFRACTION 1.8Å

e2esrB1[B:28-179] Image Pymol Jmol Links: PDB, SCOP, CATH

Methyltransferase ; ligands: GLC ; X-RAY DIFFRACTION 1.8Å

e2fpoE1[E:10-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

METHYLASE YHHF ; ligands: CL ; X-RAY DIFFRACTION 2.05Å

e2fpoD1[D:10-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

METHYLASE YHHF ; ligands: CL ; X-RAY DIFFRACTION 2.05Å

e2fpoC1[C:10-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

METHYLASE YHHF ; ligands: CL ; X-RAY DIFFRACTION 2.05Å

e2fpoF1[F:10-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

METHYLASE YHHF ; ligands: CL ; X-RAY DIFFRACTION 2.05Å

e2fpoB1[B:10-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

METHYLASE YHHF ; ligands: CL,EDO ; X-RAY DIFFRACTION 2.05Å

e3p9nA1[A:0-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

POSSIBLE METHYLTRANSFERASE (METHYLASE) ; ligands: ACT ; X-RAY DIFFRACTION 1.9Å

e6aieA1[A:0-184] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative methyltransferase ; X-RAY DIFFRACTION 1.74Å

e6aieB1[B:0-184] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative methyltransferase ; X-RAY DIFFRACTION 1.74Å

e6aieC1[C:0-184] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative methyltransferase ; X-RAY DIFFRACTION 1.74Å

e6m1cA1[A:0-185] Image Pymol Jmol Links: PDB, SCOP, CATH

Possible methyltransferase (Methylase) ; ligands: ACT,SFG ; X-RAY DIFFRACTION 2.4Å

e2iftA1[A:11-193] Image Pymol Jmol Links: PDB, SCOP, CATH

PUTATIVE METHYLASE HI0767 ; X-RAY DIFFRACTION 2.3Å

e2iftB1[B:35-195] Image Pymol Jmol Links: PDB, SCOP, CATH

PUTATIVE METHYLASE HI0767 ; X-RAY DIFFRACTION 2.3Å

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.

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