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

X: ISP domain

X: avirulence protein AvrPiz-t homologs

X: N-utilization substance G protein NusG, insert domain

X: Fas apoptotic inhibitory molecule

X: N-terminal domain in envelope glycoprotein E2

X: C-terminal region of envelope glycoprotein E2

X: beta sandwich domain in acetophenone carboxylase (Apc) alpha subunit

X: Composite domain of metallo-dependent hydrolases

X: EscU C-terminal domain-like

X: HSP20-like

X: alpha-Amylase inhibitor tendamistat

X: BTV NS2-like ssRNA-binding domain (N-terminal half of Pfam 04514)

X: Neurophysin II

X: Agglutinin HPA-like

X: jelly-roll

X: putative carbohydrate-binding module of GH2

X: Flagellar hook-associated protein 1 beta-sandwich domains

X: gp11/flagellar cap protein FliD insertion domain

X: Apc (acetophenone carboxylase) beta subunit C-terminal domain

X: beta-sandwich domain in YqeH GTPase

X: Putative transcription regulator R01717-related

X: Amiloride-sensitive cation channel 2

X: Major vault protein (MVP) structural repeat domain

X: Head-binding domain of phage P22 tailspike protein

X: Putative tailspike protein Orf210 N-terminal domain

X: Tail sheath protein beta-sandwich domain

X: 26S proteasome subunit Rpn2 C-terminal domain

X: beta sandwich domain in YacF-like proteins

X: Ecotin, trypsin inhibitor

X: Soluble secreted chemokine inhibitor, VCCI

X: hypothetical protein BT_3535

X: N-terminal domain of BT_2081-like

X: C protein alpha-antigen beta-sandwich domain

X: Baseplate structural protein gp6 C-terminal domain II

X: Immunoglobulin-like beta-sandwich

H: Immunoglobulin-related

H: Accessory protein X4 (ORF8, ORF7a)

H: Smr-associated domain

H: C2 domain

H: Dextranase, N-terminal domain

H: Antigen MPT63/MPB63 (immunoprotective extracellular protein)

H: YajI-like

H: Urease, beta-subunit

H: Osmotin-like

T: Osmotin-like

F: FB_lectin

PF07367 CL0293

Representatives:

e1x99A1[A:1-145] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; ligands: EDO,SO4 ; X-RAY DIFFRACTION 1.40Å

e1y2vB1[B:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; ligands: SER ; X-RAY DIFFRACTION 1.9Å

e1y2uB1[B:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; X-RAY DIFFRACTION 1.8Å

e1y2xA1[A:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; ligands: NAG,SER ; X-RAY DIFFRACTION 2.35Å

e1y2wA1[A:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; ligands: NAG,SER ; X-RAY DIFFRACTION 1.74Å

e1y2wB1[B:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; ligands: SER ; X-RAY DIFFRACTION 1.74Å

e1y2vA1[A:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; ligands: SER ; X-RAY DIFFRACTION 1.9Å

e1x99B1[B:3-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; ligands: SO4 ; X-RAY DIFFRACTION 1.40Å

e1y2tB1[B:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; X-RAY DIFFRACTION 1.5Å

e1y2uA1[A:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; X-RAY DIFFRACTION 1.8Å

e1y2xB1[B:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; ligands: NAG,SER ; X-RAY DIFFRACTION 2.35Å

e1y2xC1[C:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; ligands: NAG,SER ; X-RAY DIFFRACTION 2.35Å

e1y2tA1[A:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; X-RAY DIFFRACTION 1.5Å

e1y2xD1[D:2-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin ; ligands: NAG,SER ; X-RAY DIFFRACTION 2.35Å

e3qdsA1[A:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; X-RAY DIFFRACTION 1.15Å

e2ofcA1[A:0-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SCLEROTIUM ROLFSII LECTIN ; ligands: MPD,TRS ; X-RAY DIFFRACTION 1.11Å

e1xi0A1[A:3-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LECTIN ; X-RAY DIFFRACTION 2.0Å

e1xi0B1[B:4-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LECTIN ; X-RAY DIFFRACTION 2.0Å

e2ofcB1[B:0-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SCLEROTIUM ROLFSII LECTIN ; ligands: ACT,MPD ; X-RAY DIFFRACTION 1.11Å

e2ofdA1[A:0-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SCLEROTIUM ROLFSII LECTIN ; ligands: ACT,NGA ; X-RAY DIFFRACTION 1.96Å

e2ofdB1[B:0-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SCLEROTIUM ROLFSII LECTIN ; ligands: ACT,NGA ; X-RAY DIFFRACTION 1.96Å

e2ofeA1[A:0-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SCLEROTIUM ROLFSII LECTIN ; ligands: ACT,NAG ; X-RAY DIFFRACTION 1.7Å

e2ofeB1[B:0-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SCLEROTIUM ROLFSII LECTIN ; ligands: ACT,MPD,NAG ; X-RAY DIFFRACTION 1.7Å

e3qdsB1[B:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; X-RAY DIFFRACTION 1.15Å

e3qdtA1[A:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; X-RAY DIFFRACTION 1.3Å

e3qdtB1[B:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; X-RAY DIFFRACTION 1.3Å

e3qduA1[A:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: CBS ; X-RAY DIFFRACTION 2.0Å

e3qduB1[B:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: CBS ; X-RAY DIFFRACTION 2.0Å

e3qduC1[C:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: CBS ; X-RAY DIFFRACTION 2.0Å

e3qduD1[D:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: CBS ; X-RAY DIFFRACTION 2.0Å

e3qdvA1[A:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: A2G,NDG ; X-RAY DIFFRACTION 1.3Å

e3qdvB1[B:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: A2G,NDG ; X-RAY DIFFRACTION 1.3Å

e3qdwA1[A:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: A2G,NDG ; X-RAY DIFFRACTION 1.9Å

e3qdwB1[B:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: A2G,NDG ; X-RAY DIFFRACTION 1.9Å

e3qdxA1[A:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: CBS ; X-RAY DIFFRACTION 1.7Å

e3qdxB1[B:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: CBS ; X-RAY DIFFRACTION 1.7Å

e3qdyA1[A:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: CBS ; X-RAY DIFFRACTION 2.0Å

e3qdyB1[B:0-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BOLETUS EDULIS LECTIN ; ligands: CBS ; X-RAY DIFFRACTION 2.0Å

e4yldA1[A:1-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Sclerotium Rolfsii lectin variant 1 (SSR1) ; X-RAY DIFFRACTION 1.7Å

e4yldB1[B:1-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Sclerotium Rolfsii lectin variant 1 (SSR1) ; ligands: MPD ; X-RAY DIFFRACTION 1.7Å

e4z2fA1[A:0-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin variant 2 ; X-RAY DIFFRACTION 1.6Å

e4z2fB1[B:0-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

lectin variant 2 ; ligands: MPD ; X-RAY DIFFRACTION 1.6Å

e4z2qA1[A:1-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lectin ; ligands: NAG,NDG,TRS ; X-RAY DIFFRACTION 1.90Å

e4z2qB1[B:1-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lectin ; ligands: MPD,NAG,NDG ; X-RAY DIFFRACTION 1.90Å

e4z2sA1[A:0-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Sclerotium Rolfsii lectin variant ; ligands: NAG,NDG,TRS ; X-RAY DIFFRACTION 1.70Å

e4z2sB1[B:0-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Sclerotium Rolfsii lectin variant ; ligands: MPD,NAG,NDG ; X-RAY DIFFRACTION 1.70Å

F: TDH

F: Bys1

F: Thaumatin

F: Aegerolysin

F: Anemone_cytotox

F: Nakanori

F: Glyco_hydro_64

H: FAH

H: TRAF domain-like

H: Fungal immunomodulatory protein, FIP

H: Nicotinic receptor ligand binding domain-like

H: Leukocidin-like

H: Ig-like domains in STT3

H: Perfringolysin O beta sandwich domain

H: N-terminal domain in A1 cistron-splicing factor AAR2

H: N-terminal domain in metallo-endopeptidase BACOVA_00663

H: Ig-like domain in tailspike protein

H: Dispersin

H: Ig-like domain in envelope glycoprotein E2

H: N-terminal Ig-like domain in baseplate protein ORF48

H: C-terminal Ig-like domain in baseplate protein ORF48

H: Ig-like domain in hypothetical protein BACOVA_03992

H: Viral chemokine binding protein m3

H: Secreted protein CofJ

H: PUD homologs

H: HCV envelope glycoprotein E2

H: Beta-galactosidase LacA beta-sandwich domain

H: Calcium-dependent cell adhesion molecule-1 C-terminal domain

H: Ig-like domain in endo-beta-N-acetylglucosaminidase F2

H: m04 immunoevasin

H: Csd4 Ig-like domain

H: CBM58

H: Hydrazine synthase alpha subunit middle domain

H: Minor structural protein 5 C-terminal Ig-like domain

H: Immunoglobulin-like domain in paramyxoviruses fusion protein

H: Baseplate wedge protein gp6 Ig-like domain

H: beta-xylosidase (XylC) insertion domain

H: Adhesin BspA variable (V) domain

H: Ig-like domain in extracellular arabinanase

H: IBP (ice-binding protein) RIII_3 domain

H: C-domain of Mg adhesin P110

X: Mucin-like region of HAP2

X: N-terminal half of TgpA periplasmic domain

X: Starch specific carbohydrate-binding modules

X: Insertion domain in tetravirus coat protein

X: hypothetical protein BA_2335

X: Lactococcin 972

X: Arginine methyltransferase oligomerization subdomain

X: Cupredoxin-like

X: WSSV envelope protein-like

X: Baculovirus p35 protein-related

X: Ig-like domain in anthrax protective antigen

X: N-terminal beta-sandwich domain in anthrax protective antigen

X: Middle beta-sandwich domain in anthrax protective antigen

X: N-terminal domain in a putative lipoprotein BACOVA_00967

X: C-terminal domain in a putative lipoprotein BACOVA_00967

X: Cellulose-binding protein CttA N-terminal domain

X: Ig-like domain in putative lipoprotein BF3042-related proteins

X: Domain in virus attachment proteins

X: VP4 membrane interaction domain

X: Mucin-binding protein domain

X: C-terminal domain of envelope glycoprotein H

X: Glycosyl hydrolase domain-like

some similarity with Ig fold

X: Putative glucosidase YicI, C-terminal domain

X: Putative anti-sigma factor BDI_1681 N-terminal domain

X: Immunomodulator A46 N-terminal domain

X: TraO N-terminal domain

X: Beta-galactosidase LacA, domain 3

X: Lactophage receptor-binding protein N-terminal domain-like

X: gamma-Crystallin-like

X: C-terminal domain of viral protein A26

X: Ice-binding adhesin

X: Third domain in metalloprotease StcE

X: Herpesvirus nuclear egress complex subunit M50 N-terminal domain

X: SMAD/FHA domain

X: Heme-binding protein HmuY-related

X: NAD kinase beta sandwich domain-like

X: Epsilon subunit of F1F0-ATP synthase-N

X: CPE0013-like

X: Penicillin-binding protein associated domain

X: E2 regulatory, transactivation domain

X: Flagellar hook protein flgE D2 domain-like

X: Flagellar hook subunit protein FlgE beta sandwich domain

X: HSP40/DnaJ peptide-binding domain

X: DNA-entry nuclease inhibitor

X: Heat shock protein 70kD (HSP70), peptide-binding domain

X: gp9 N-terminal domain-like

X: gp9 C-terminal domain-like

X: Hypothetical Protein lmo2686

X: ENV polyprotein, receptor-binding domain

X: C-terminal domain in YerB-like proteins

X: Nascent polypeptide-associated complex (NAC) dimerization domain

X: A putative surface protein

X: P2X purinoceptor

X: Atg29-Atg31

X: Surface cell antigen (sca) N-terminal domain

X: Uncharacterized protein BAS0735

X: SARAF luminal domain

X: Piezo CTL2 domain

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

few secondary structure elementsstabilized by cofactors or disulfides

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

special