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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

X: Alpha-beta plaits
H: Formylmethanofuran:tetrahydromethanopterin formyltransferase
T: Formylmethanofuran:tetrahydromethanopterin formyltransferase
F: FTR_C

PF02741

Representatives:

e1ftrA2[A:149-296] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN\:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; X-RAY DIFFRACTION 1.7Å

e2fhjB2[B:149-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN--TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; ligands: K,MFN ; X-RAY DIFFRACTION 2.0Å

e2fhjA2[A:149-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN--TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; ligands: H4Z,K,MFN,PE4 ; X-RAY DIFFRACTION 2.0Å

e2fhkB2[B:149-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN--TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; ligands: K,MFN ; X-RAY DIFFRACTION 2.0Å

e1m5sA2[A:146-297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; X-RAY DIFFRACTION 1.85Å

e1m5sC2[C:2146-2297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; X-RAY DIFFRACTION 1.85Å

e1m5hD2[D:3146-3297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: K ; X-RAY DIFFRACTION 2.0Å

e1m5hC2[C:2146-2297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: K ; X-RAY DIFFRACTION 2.0Å

e2fhjC2[C:149-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN--TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; ligands: H4Z,K,MFN,PE3,PE4 ; X-RAY DIFFRACTION 2.0Å

e2fhjD2[D:149-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN--TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; ligands: K,MFN,PE4 ; X-RAY DIFFRACTION 2.0Å

e1m5hB2[B:1146-1297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: K ; X-RAY DIFFRACTION 2.0Å

e1m5sD2[D:3146-3297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; X-RAY DIFFRACTION 1.85Å

e1m5hF2[F:5146-5297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: K ; X-RAY DIFFRACTION 2.0Å

e1m5sB2[B:1146-1297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; X-RAY DIFFRACTION 1.85Å

e1m5hA2[A:146-297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: K ; X-RAY DIFFRACTION 2.0Å

e1m5hE2[E:4146-4297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: K ; X-RAY DIFFRACTION 2.0Å

e2fhkA2[A:149-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN--TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; ligands: K,MFN ; X-RAY DIFFRACTION 2.0Å

e1ftrC2[C:149-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN\:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; X-RAY DIFFRACTION 1.7Å

e2fhkD2[D:149-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN--TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; ligands: K,MFN ; X-RAY DIFFRACTION 2.0Å

e1m5hG2[G:6146-6297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: K ; X-RAY DIFFRACTION 2.0Å

e1m5hH2[H:7146-7297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: K ; X-RAY DIFFRACTION 2.0Å

e1ftrD2[D:149-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN\:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; X-RAY DIFFRACTION 1.7Å

e2fhkC2[C:149-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN--TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; ligands: K ; X-RAY DIFFRACTION 2.0Å

e1ftrB2[B:149-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMYLMETHANOFURAN\:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE ; X-RAY DIFFRACTION 1.7Å

e6s6yD1[D:153-309] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: GLU,K ; X-RAY DIFFRACTION 3.100Å

e6s6yH1[H:153-309] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: GLU,GOL,K ; X-RAY DIFFRACTION 3.100Å

e6s6yL2[L:153-309] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: CA,GLU,K ; X-RAY DIFFRACTION 3.100Å

e6s6yP1[P:153-309] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formylmethanofuran--tetrahydromethanopterin formyltransferase ; ligands: GLU,K ; X-RAY DIFFRACTION 3.100Å

X: LuxS, MPP, ThrRS/AlaRS common domain

looks like an elaborated ferredoxin

X: ClpS-like

contains a HTH motif

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