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

X: SRF-like

X: Fe,Mn superoxide dismutase (SOD)-C

X: Nigritoxin middle domain

X: Mitochondrial complex I, B17.2 subunit

X: Gelsolin-like

X: GIY-YIG endonuclease

X: N-terminal domain of eukaryotic peptide chain release factor subunit 1, ERF1

X: Regulatory factor Nef

X: Hut operon positive regulatory protein HutP

X: Mitochondrial homologous recombination protein 1

X: Nucleotidyltransferase-like

X: N-terminal a+b domain in adenylylcyclase toxin

X: a+b domain in Rap/Ran-GAP (Pfam 02145)

X: C-terminal segment in 5'->3' exoribonucleases

X: Profilin-like

X: Sensor domain of histidine kinase VC_A0565

X: Nonstructural protein V

X: Putative sensor histidine kinase domain

X: a+b domain in antivirulence factor

X: HIT-like

X: DUF1827-like

X: PR-1-like

X: L-sulfolactate dehydrogenase-like

X: AraD-like aldolase/epimerase

X: N-acetylmuramoyl-L-alanine amidase-like

X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4

X: Cryptic loci regulator 2 N-terminal domain

X: thylakoid acid phosphatase domain-related

X: Thioredoxin-like

X: Thioredoxin-like domain in RNase E

X: Major capsid protein GP7

X: Bacillus chorismate mutase-like

X: CofE-like

X: a+b domain in conserved hypothetical protein Rv3899c

X: Cytidine deaminase-like

X: Phospholipase D/nuclease

X: Phoshotransferase/anion transport protein

X: Mid-cell-anchored protein Z (MapZ) extracellular domain 2

X: Class II aaRS and biotin synthetases

X: Protein interacting with HSP90 1 (Pih1) N-terminal domain

X: Suppressor of Fused, N-terminal domain

X: Suppressor of Fused, C-terminal domain

X: Hypothetical protein MTH1880

X: Hypothetical protein Ta1206-like

X: CytB endotoxin-like (Pfam 01338)

X: Coproporphyrinogen III oxidase

X: Mog1p/PsbP-like

X: Two-component system yycF/yycG regulatory protein yycH-like

X: B12-dependent (class II) ribonucleotide reductase, insertion domain

X: CorA soluble domain-like

X: DeoB insert domain-like

X: DisA nucleotide-binding domain

X: Coronavirus spike protein receptor-binding domain

X: C-terminal domain in DHH phosphoesterases

X: PlyCB

X: Surfactant protein C BRICHOS domain

X: Late genes activator p4

X: AF1514-like

X: YehU-like

X: Nat/Ivy

H: Acyl-CoA N-acyltransferases (Nat)

T: Acyl-CoA N-acyltransferases (Nat)

F: FeeM

F: GNAT_acetyltran

F: GNAT_acetyltr_2

F: Gly_acyl_tr_N

F: DUF5645

F: Gly_acyl_tr_N,Gly_acyl_tr_C

F: FR47

F: Acetyltransf_9

F: FemAB

F: Acetyltransf_16

F: GNAT_like

F: PanZ

F: AstA

F: HAT_KAT11

F: Acetyltransf_7

F: DUF5613

F: Acetyltransf_19

F: MOZ_SAS

F: NMT_C

F: Hat1_N

F: Acetyltransf_3

Representatives:

e2fsrA1[A:4-167] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

ACETYLTRANSFERASE ; ligands: FMT,PEG ; X-RAY DIFFRACTION 1.52Å

e2fckA1[A:1-178] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ribosomal-protein-serine acetyltransferase, putative ; ligands: GOL,NO3 ; X-RAY DIFFRACTION 1.7Å

e5ktdA1[A:2-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FdhC ; ligands: COA,EDO,MG,QUH ; X-RAY DIFFRACTION 1.90Å

e5ktaA1[A:2-179] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FdhC ; ligands: DMS,SO4 ; X-RAY DIFFRACTION 1.89Å

e3juwA1[A:5-171] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable GnaT-family acetyltransferase ; ligands: SO4 ; X-RAY DIFFRACTION 2.100Å

e3juwB1[B:5-171] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable GnaT-family acetyltransferase ; ligands: SO4 ; X-RAY DIFFRACTION 2.100Å

e3juwC1[C:5-171] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable GnaT-family acetyltransferase ; ligands: SO4 ; X-RAY DIFFRACTION 2.100Å

e3eo4A1[A:341-502] Image Pymol Jmol Links: PDB, SCOP, CATH

UNCHARACTERIZED PROTEIN MJ1062 ; ligands: MES,PG6 ; X-RAY DIFFRACTION 2.19Å

e3eo4C1[C:349-502] Image Pymol Jmol Links: PDB, SCOP, CATH

UNCHARACTERIZED PROTEIN MJ1062 ; ligands: EDO,MES ; X-RAY DIFFRACTION 2.19Å

e3eo4D1[D:341-502] Image Pymol Jmol Links: PDB, SCOP, CATH

UNCHARACTERIZED PROTEIN MJ1062 ; ligands: EDO,MES ; X-RAY DIFFRACTION 2.19Å

e2zw6A1[A:8-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BLEOMYCIN ACETYLTRANSFERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.5Å

e2zw4A4[A:8-177] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BLEOMYCIN ACETYLTRANSFERASE ; ligands: COA,SO4 ; X-RAY DIFFRACTION 2.7Å

e2zw4B4[B:8-177] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BLEOMYCIN ACETYLTRANSFERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.7Å

e2zw4C4[C:9-177] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BLEOMYCIN ACETYLTRANSFERASE ; ligands: COA,SO4 ; X-RAY DIFFRACTION 2.7Å

e2zw7B4[B:9-177] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BLEOMYCIN ACETYLTRANSFERASE ; ligands: BLM ; X-RAY DIFFRACTION 2.8Å

e2zw5A4[A:9-177] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BLEOMYCIN ACETYLTRANSFERASE ; ligands: COA ; X-RAY DIFFRACTION 2.4Å

e2zw7A4[A:9-177] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BLEOMYCIN ACETYLTRANSFERASE ; ligands: BLM,COA ; X-RAY DIFFRACTION 2.8Å

e2zw4D4[D:9-177] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BLEOMYCIN ACETYLTRANSFERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.7Å

e2zw5B4[B:9-177] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BLEOMYCIN ACETYLTRANSFERASE ; ligands: COA ; X-RAY DIFFRACTION 2.4Å

e2zw6B4[B:8-177] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BLEOMYCIN ACETYLTRANSFERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.5Å

e3eo4B2[B:351-502] Image Pymol Jmol Links: PDB, SCOP, CATH

UNCHARACTERIZED PROTEIN MJ1062 ; ligands: EDO,MES ; X-RAY DIFFRACTION 2.19Å

e4xpkA1[A:0-150] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-Acetyltransferase, PseH ; X-RAY DIFFRACTION 1.95Å

e4xplA1[A:1-150] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-Acetyltransferase, PseH ; ligands: ACO ; X-RAY DIFFRACTION 1.95Å

e5ktcA1[A:2-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FdhC ; ligands: COA,EDO,FUH,MG ; X-RAY DIFFRACTION 1.8Å

e6eddB1[B:0-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetyltransferase PA3944 ; ligands: COA,EDO,TRS,UNX ; X-RAY DIFFRACTION 1.550Å

e6eddA1[A:9-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetyltransferase PA3944 ; ligands: COA,EDO,UNX ; X-RAY DIFFRACTION 1.550Å

e6edvA1[A:9-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetyltransferase PA3944 ; ligands: CA,COA,EDO ; X-RAY DIFFRACTION 1.350Å

e7kppA1[A:9-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetyltransferase PA3944 ; ligands: COA,EDO,UNX ; X-RAY DIFFRACTION 1.450Å

e7kppB1[B:0-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetyltransferase PA3944 ; ligands: COA,EDO,UNX ; X-RAY DIFFRACTION 1.450Å

e7kpsA1[A:9-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetyltransferase PA3944 ; ligands: ACO,COA,EDO,TRS ; X-RAY DIFFRACTION 1.800Å

e7kpsB1[B:8-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetyltransferase PA3944 ; ligands: ACO,COA,EDO,PEG,PGE,TRS ; X-RAY DIFFRACTION 1.800Å

e7kyeA1[A:9-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetyltransferase PA3944 ; ligands: COA,EDO,NHE ; X-RAY DIFFRACTION 1.930Å

e7kyjA1[A:8-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetyltransferase PA3944 ; ligands: ACT,COA,UNX,ZN ; X-RAY DIFFRACTION 2.000Å

e7kyjB1[B:-1-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetyltransferase PA3944 ; ligands: ACT,COA,EDO,UNX,ZN ; X-RAY DIFFRACTION 2.000Å

e4avaA2[A:145-333] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LYSINE ACETYLTRANSFERASE ; ligands: ACO,ACT,EDO,MG,PEG ; X-RAY DIFFRACTION 1.7Å

e4avbA4[A:145-332] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LYSINE ACETYLTRANSFERASE ; ligands: ACO,EDO,PEG ; X-RAY DIFFRACTION 1.8Å

e4avcA4[A:145-333] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LYSINE ACETYLTRANSFERASE ; ligands: ACO ; X-RAY DIFFRACTION 2.81Å

e4avbB4[B:145-332] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LYSINE ACETYLTRANSFERASE ; ligands: ACO,ACT,EDO,PEG ; X-RAY DIFFRACTION 1.8Å

e4avcB4[B:145-333] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LYSINE ACETYLTRANSFERASE ; ligands: ACO,EDO,PEG ; X-RAY DIFFRACTION 2.81Å

e4ollA1[A:142-333] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetyltransferase Pat ; ligands: CA ; X-RAY DIFFRACTION 1.900Å

e4onuA1[A:142-333] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetyltransferase Pat ; ligands: CA ; X-RAY DIFFRACTION 2.250Å

e4orfA1[A:142-333] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetyltransferase Pat ; ligands: CL ; X-RAY DIFFRACTION 2.000Å

e1s7kA1[A:3-31,A:51-176] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETYL TRANSFERASE ; X-RAY DIFFRACTION 1.8Å

e1yreA1[A:11-193] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

hypothetical protein PA3270 ; ligands: COA ; X-RAY DIFFRACTION 2.1Å

e1nslA1[A:0-179] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROBABLE ACETYLTRANSFERASE ; ligands: CL ; X-RAY DIFFRACTION 2.7Å

F: Acetyltransf_1,Hat1_N

F: NMT

F: Acetyltransf_CG

F: Acetyltransf_13

F: Acetyltransf_8

F: Acetyltransf_18

F: LPG_synthase_C

F: DUF1122

F: NAT

F: Leu_Phe_trans

F: GNAT_C

F: Acetyltransf_10

F: Acetyltransf_4

F: HlyC

F: ODC_AZ

F: Autoind_synth

F: Acetyltransf_1

F: Acetyltransf_17

F: DUF1999

F: MCD

F: GNAT_acetyltr_2,tRNA_bind_2

PF13718 PF13725

F: Acetyltransf_9,Acetyltransf_17

PF13527 PF17668

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.

H: Inhibitor of vertebrate lysozyme, Ivy

H: Immunity protein of a type VI secretion system effector

H: Uncharacterized conserved protein MK0968

H: AlkZ C-terminal domain

X: Integron cassette protein VCH_CASS3

X: Polymerase basic protein 2 cap-binding domain

X: A subdomain in the anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases

X: ESX-1 secretion system protein eccB1 modular domains

X: Fibrinogen binding protein a+b domain

X: C-terminal domain of N-acetylglucosaminyltransferase-V

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

special