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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: LuxS, MPP, ThrRS/AlaRS common domain

looks like an elaborated ferredoxin

X: C-terminal domain in some PLP-dependent transferases
H: C-terminal domain in some PLP-dependent transferases
T: C-terminal domain in some PLP-dependent transferases
F: Aminotran_3

PF00202 CL0061

Representatives:

e4nogB2[B:339-440] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative ornithine aminotransferase, mitochondrial ; ligands: ACT,BME ; X-RAY DIFFRACTION 1.2Å

e1vefA1[A:306-395] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/ACETYL-LYSINE AMINOTRANSFERASE ; X-RAY DIFFRACTION 1.35Å

e2pb0B2[B:307-404] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetylornithine/succinyldiaminopimelate aminotransferase ; X-RAY DIFFRACTION 1.95Å

e3hmuA3[A:344-467] Image Pymol Jmol Links: PDB, SCOP, CATH

Aminotransferase, class III ; ligands: CL ; X-RAY DIFFRACTION 2.100Å

e3hmuB1[B:344-463] Image Pymol Jmol Links: PDB, SCOP, CATH

Aminotransferase, class III ; ligands: CL ; X-RAY DIFFRACTION 2.100Å

e2pb2B2[B:307-405] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetylornithine/succinyldiaminopimelate aminotransferase ; ligands: EDO ; X-RAY DIFFRACTION 1.90Å

e2pb0A2[A:307-405] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetylornithine/succinyldiaminopimelate aminotransferase ; X-RAY DIFFRACTION 1.95Å

e2pb2A2[A:307-405] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetylornithine/succinyldiaminopimelate aminotransferase ; X-RAY DIFFRACTION 1.90Å

e4jevB2[B:310-407] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; ligands: PXG ; X-RAY DIFFRACTION 1.67Å

e4jewA1[A:310-407] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; X-RAY DIFFRACTION 1.48Å

e4jewB1[B:307-404] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; ligands: ACT,EDO ; X-RAY DIFFRACTION 1.48Å

e4jexA1[A:307-406] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; ligands: ACT,EDO ; X-RAY DIFFRACTION 1.43Å

e4jexB1[B:307-405] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; ligands: ACT,EDO,TNF ; X-RAY DIFFRACTION 1.43Å

e4jeyB1[B:307-405] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; ligands: ACT,EDO ; X-RAY DIFFRACTION 1.55Å

e4jezA1[A:307-406] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; ligands: ACT,EDO ; X-RAY DIFFRACTION 1.55Å

e4jezB1[B:307-405] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; ligands: ACT,EDO ; X-RAY DIFFRACTION 1.55Å

e4jf0A1[A:307-405] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetylornithine/succinyldiaminopimelate aminotransferase ; ligands: ACT,EDO ; X-RAY DIFFRACTION 2.10Å

e4jf0B1[B:307-405] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetylornithine/succinyldiaminopimelate aminotransferase ; ligands: ACT,EDO ; X-RAY DIFFRACTION 2.10Å

e4jf1A1[A:307-407] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; ligands: ACT,EDO ; X-RAY DIFFRACTION 1.28Å

e4jf1B1[B:307-404] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; ligands: ACT,EDO ; X-RAY DIFFRACTION 1.28Å

e4jevA2[A:310-407] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; ligands: PXG ; X-RAY DIFFRACTION 1.67Å

e4jeyA2[A:310-406] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/SUCCINYLDIAMINOPIMELATE AMINOTRANSFERASE ; X-RAY DIFFRACTION 1.55Å

e1vefB2[B:1306-1395] Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLORNITHINE/ACETYL-LYSINE AMINOTRANSFERASE ; X-RAY DIFFRACTION 1.35Å

e1wkgA2[A:306-395] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetylornithine/acetyl-lysine aminotransferase ; X-RAY DIFFRACTION 2.05Å

e1wkgB2[B:306-395] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetylornithine/acetyl-lysine aminotransferase ; X-RAY DIFFRACTION 2.05Å

e1wkhA2[A:306-395] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetylornithine/acetyl-lysine aminotransferase ; ligands: PPE ; X-RAY DIFFRACTION 2.2Å

e1wkhB2[B:306-395] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetylornithine/acetyl-lysine aminotransferase ; ligands: PPE ; X-RAY DIFFRACTION 2.2Å

e4uoxA1[A:353-459] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PUTRESCINE AMINOTRANSFERASE ; ligands: PUT ; X-RAY DIFFRACTION 2.10Å

e4uoxB1[B:353-459] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PUTRESCINE AMINOTRANSFERASE ; ligands: GOL,PUT ; X-RAY DIFFRACTION 2.10Å

e4uoxD2[D:353-459] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PUTRESCINE AMINOTRANSFERASE ; X-RAY DIFFRACTION 2.10Å

e4uoyA2[A:353-460] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PUTRESCINE AMINOTRANSFERASE ; X-RAY DIFFRACTION 2.30Å

e4uoyB1[B:353-459] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PUTRESCINE AMINOTRANSFERASE ; X-RAY DIFFRACTION 2.30Å

e4uoyC1[C:353-459] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PUTRESCINE AMINOTRANSFERASE ; X-RAY DIFFRACTION 2.30Å

e4uoyD1[D:353-459] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PUTRESCINE AMINOTRANSFERASE ; X-RAY DIFFRACTION 2.30Å

e4adcC1[C:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.3Å

e4adcD1[D:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.3Å

e4adcB1[B:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.3Å

e4adcA1[A:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.3Å

e4adeA1[A:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.75Å

e4adeB1[B:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.75Å

e4adbC1[C:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.2Å

e4adbB2[B:304-403] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.2Å

e4adbD1[D:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.2Å

e4adbA1[A:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.2Å

e4addB2[B:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.45Å

e4addD2[D:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.45Å

e4addA2[A:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.45Å

e4addC2[C:304-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SUCCINYLORNITHINE TRANSAMINASE ; X-RAY DIFFRACTION 2.45Å

e5h7dA1[A:353-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putrescine aminotransferase,Immunoglobulin G-binding protein A ; X-RAY DIFFRACTION 2.6Å

e5h7dB2[B:353-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putrescine aminotransferase,Immunoglobulin G-binding protein A ; X-RAY DIFFRACTION 2.6Å

e5h7dC2[C:353-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putrescine aminotransferase,Immunoglobulin G-binding protein A ; X-RAY DIFFRACTION 2.6Å

e5h7dD2[D:353-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putrescine aminotransferase,Immunoglobulin G-binding protein A ; X-RAY DIFFRACTION 2.6Å

e5h7dI2[I:353-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putrescine aminotransferase,Immunoglobulin G-binding protein A ; X-RAY DIFFRACTION 2.6Å

e5h7dJ1[J:353-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putrescine aminotransferase,Immunoglobulin G-binding protein A ; X-RAY DIFFRACTION 2.6Å

e5h7dM2[M:353-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putrescine aminotransferase,Immunoglobulin G-binding protein A ; X-RAY DIFFRACTION 2.6Å

e5h7dN2[N:353-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putrescine aminotransferase,Immunoglobulin G-binding protein A ; X-RAY DIFFRACTION 2.6Å

e5x3fA2[A:353-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putrescine aminotransferase,Immunoglobulin G-binding protein A ; X-RAY DIFFRACTION 3.38Å

e5g4iA2[A:333-440] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOLYASE ; X-RAY DIFFRACTION 1.50Å

e5m4bA2[A:319-436] nonrep Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Aminotransferase class-III ; ligands: 7F7,EDO ; X-RAY DIFFRACTION 1.500Å

e1s0aA1[A:331-429] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Adenosylmethionine-8-amino-7-oxononanoate aminotransferase ; X-RAY DIFFRACTION 1.71Å

e1zodA2[A:326-433] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

2,2-DIALKYLGLYCINE DECARBOXYLASE ; ligands: MES ; X-RAY DIFFRACTION 1.8Å

e1sffA1[A:321-426] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-aminobutyrate aminotransferase ; ligands: SO4 ; X-RAY DIFFRACTION 1.9Å

e4uoxC2[C:353-458] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PUTRESCINE AMINOTRANSFERASE ; X-RAY DIFFRACTION 2.10Å

e2bylA1[A:346-439] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ORNITHINE AMINOTRANSFERASE ; X-RAY DIFFRACTION 2.15Å

e1ohwA1[A:376-471] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-AMINOBUTYRATE AMINOTRANSFERASE ; 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.

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