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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

X: beta-propeller-like
H: beta-propeller
T: 8-bladed
F: DPPIV_N,Dpp_8_9_N

PF00930 PF19520

Representatives:

e6eorD1[D:20-599] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: 9XH ; X-RAY DIFFRACTION 2.9Å

e6qzvB2[B:20-599] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Dipeptidyl peptidase 9 ; X-RAY DIFFRACTION 3.00Å

e6qzvC1[C:20-599] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Dipeptidyl peptidase 9 ; X-RAY DIFFRACTION 3.00Å

e6qzvD2[D:20-599] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Dipeptidyl peptidase 9 ; X-RAY DIFFRACTION 3.00Å

e6qzvA2[A:21-599] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Dipeptidyl peptidase 9 ; X-RAY DIFFRACTION 3.00Å

e6x6aA1[A:18-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ELECTRON MICROSCOPY

e7crwD1[D:21-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ELECTRON MICROSCOPY

e6x6aD1[D:18-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ELECTRON MICROSCOPY

e6x6cA1[A:18-602] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: GK2 ; ELECTRON MICROSCOPY

e6x6cD1[D:18-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: GK2 ; ELECTRON MICROSCOPY

e7crwC2[C:21-115,C:136-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ELECTRON MICROSCOPY

e7jn7A1[A:18-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: GK2 ; ELECTRON MICROSCOPY

e7jkqA2[A:18-116,A:136-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ELECTRON MICROSCOPY

e7jkqD1[D:18-114,D:139-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ELECTRON MICROSCOPY

e7oz7B1[B:48-139,B:164-627] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 2.600Å

e7oz7A1[A:48-140,A:166-626] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 2.600Å

e7zxsB2[B:20-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: EDO,KBO,PEG ; X-RAY DIFFRACTION 1.807Å

e7svlD1[D:18-599] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: D06 ; X-RAY DIFFRACTION 2.460Å

e7svlA1[A:19-599] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: D06 ; X-RAY DIFFRACTION 2.460Å

e7svlB2[B:20-599] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: D06 ; X-RAY DIFFRACTION 2.460Å

e7svlC2[C:20-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: D06 ; X-RAY DIFFRACTION 2.460Å

e7svnA2[A:19-599] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: CW8 ; X-RAY DIFFRACTION 2.780Å

e7svnB2[B:20-599] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: CW8 ; X-RAY DIFFRACTION 2.780Å

e7svnC1[C:20-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: CW8 ; X-RAY DIFFRACTION 2.780Å

e7svnD2[D:19-599] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: CW8 ; X-RAY DIFFRACTION 2.780Å

e7zxsA1[A:22-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: EDO,KBO,PEG ; X-RAY DIFFRACTION 1.807Å

e7zxsC1[C:21-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: EDO,KBO,PEG ; X-RAY DIFFRACTION 1.807Å

e7zxsD2[D:22-601] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: EDO,KBO,PEG ; X-RAY DIFFRACTION 1.807Å

e6eosA1[A:48-138,A:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.1Å

e6eosB1[B:48-138,B:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.1Å

e6eotB1[B:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.5Å

e6eotI1[I:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.5Å

e6eooA1[A:48-138,A:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 2.5Å

e6eooB1[B:48-138,B:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 2.5Å

e6eooC1[C:48-138,C:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 2.5Å

e6eopB1[B:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CA ; X-RAY DIFFRACTION 2.4Å

e6eopC1[C:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CA ; X-RAY DIFFRACTION 2.4Å

e6eoqB1[B:20-109,B:139-579] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; X-RAY DIFFRACTION 3.0Å

e6eoqC2[C:20-109,C:139-579] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; X-RAY DIFFRACTION 3.0Å

e6eosD1[D:48-138,D:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.1Å

e6eosE2[E:48-143,E:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.1Å

e6eosF1[F:48-138,F:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.1Å

e6eotA2[A:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.5Å

e6eotD1[D:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.5Å

e6eotG1[G:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.5Å

e6eotK2[K:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.5Å

e6hp8A2[A:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 8 ; ligands: GK2,GOL,NA ; X-RAY DIFFRACTION 2.50Å

e6hp8B1[B:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 8 ; ligands: GK2,GOL,NA ; X-RAY DIFFRACTION 2.50Å

e6hp8C1[C:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 8 ; ligands: GK2,GOL,NA ; X-RAY DIFFRACTION 2.50Å

e6eoqD1[D:20-109,D:139-579] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; X-RAY DIFFRACTION 3.0Å

e6eosC2[C:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.1Å

e6qzwC2[C:48-629] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Dipeptidyl peptidase 8 ; ligands: NA ; X-RAY DIFFRACTION 3.20Å

e6qzwA1[A:48-629] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.20Å

e6qzwB1[B:48-629] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.20Å

e6trwA2[A:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: NA ; X-RAY DIFFRACTION 3.000Å

e6trwB2[B:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: NA ; X-RAY DIFFRACTION 3.000Å

e6trwC2[C:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: NA ; X-RAY DIFFRACTION 3.000Å

e6trxB1[B:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: 9XH,NA,PO4,TMO ; X-RAY DIFFRACTION 3.200Å

e6trxA1[A:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: 9XH,NA,PO4,TMO ; X-RAY DIFFRACTION 3.200Å

e6trxC1[C:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: 9XH,NA,PO4,TMO ; X-RAY DIFFRACTION 3.200Å

e7jn7D1[D:18-109,D:139-579] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: GK2 ; ELECTRON MICROSCOPY

e7a3fC1[C:17-109,C:139-579] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 9 ; X-RAY DIFFRACTION 2.900Å

e7a3lA2[A:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CL,GOL,QXN ; X-RAY DIFFRACTION 2.800Å

e7a3fB1[B:20-109,B:139-579] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 9 ; ligands: GOL ; X-RAY DIFFRACTION 2.900Å

e7a3fA1[A:20-108,A:139-579] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 9 ; ligands: GOL ; X-RAY DIFFRACTION 2.900Å

e7a3fD1[D:20-109,D:139-579] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 9 ; X-RAY DIFFRACTION 2.900Å

e7a3gB1[B:46-138,B:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CL,GOL,PO4,QXQ,TMO ; X-RAY DIFFRACTION 2.800Å

e7a3gA1[A:46-138,A:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CL,GOL,PO4,QXQ,TMO ; X-RAY DIFFRACTION 2.800Å

e7a3iA2[A:48-140,A:164-629] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 8 ; ligands: CL,NA ; X-RAY DIFFRACTION 2.800Å

e7a3iB1[B:48-139,B:164-629] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 8 ; ligands: CL,NA,QXH ; X-RAY DIFFRACTION 2.800Å

e7a3iC1[C:48-140,C:164-629] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 8 ; ligands: CL,NA,QXH ; X-RAY DIFFRACTION 2.800Å

e7a3jC2[C:48-140,C:164-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CL ; X-RAY DIFFRACTION 3.000Å

e7a3jA2[A:48-140,A:164-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 3.000Å

e7a3jB2[B:48-137,B:164-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CL ; X-RAY DIFFRACTION 3.000Å

e7a3kC2[C:48-140,C:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 8 ; ligands: CL,NA ; X-RAY DIFFRACTION 2.650Å

e7a3kA1[A:48-140,A:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 8 ; ligands: CL,NA ; X-RAY DIFFRACTION 2.650Å

e7a3kB2[B:48-138,B:165-629] Image Pymol Jmol Links: PDB, SCOP, CATH

Dipeptidyl peptidase 8 ; ligands: CL,NA ; X-RAY DIFFRACTION 2.650Å

e7a3lB1[B:48-139,B:164-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CL,GOL,QXN,TMO ; X-RAY DIFFRACTION 2.800Å

e7a3lC1[C:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CL,GOL,QXN ; X-RAY DIFFRACTION 2.800Å

e7ayqA1[A:48-140,A:166-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: GOL,PO4,S9Z ; X-RAY DIFFRACTION 2.450Å

e7ayqB2[B:48-139,B:164-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: GOL,PO4 ; X-RAY DIFFRACTION 2.450Å

e7ayrA1[A:48-140,A:166-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: PO4 ; X-RAY DIFFRACTION 2.690Å

e7ayrB2[B:48-139,B:164-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: PO4 ; X-RAY DIFFRACTION 2.690Å

e7or4B1[B:48-139,B:164-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: 2YI ; X-RAY DIFFRACTION 2.440Å

e7or4A1[A:48-139,A:164-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; X-RAY DIFFRACTION 2.440Å

e7svmA1[A:47-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: D06,TMO ; X-RAY DIFFRACTION 2.690Å

e7svmB2[B:47-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: D06,TMO ; X-RAY DIFFRACTION 2.690Å

e7svmC1[C:47-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: D06,TMO ; X-RAY DIFFRACTION 2.690Å

e7svoA1[A:47-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CW8,TMO ; X-RAY DIFFRACTION 2.580Å

e7svoB1[B:47-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CW8,TMO ; X-RAY DIFFRACTION 2.580Å

e7svoC2[C:47-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CW8,TMO ; X-RAY DIFFRACTION 2.580Å

e6eopA1[A:48-629] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 8 ; ligands: CA,FLC ; X-RAY DIFFRACTION 2.4Å

e6eorA1[A:21-599] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: 9XH ; X-RAY DIFFRACTION 2.9Å

e6eorB2[B:20-599] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: 9XH ; X-RAY DIFFRACTION 2.9Å

e6eorC2[C:20-579] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; ligands: 9XH ; X-RAY DIFFRACTION 2.9Å

e6eoqA1[A:20-109,A:139-579] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 9 ; X-RAY DIFFRACTION 3.0Å

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.

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