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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

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

X: HAD domain-like
H: HAD domain-related
T: HAD-like
F: NT5C

PF06941 CL0137

Representatives:

e1q92A1[A:33-227] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5(3)-DEOXYRIBONUCLEOTIDASE ; ligands: DRM,GOL,MG ; X-RAY DIFFRACTION 1.4Å

e1mh9A1[A:34-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

deoxyribonucleotidase ; ligands: MG,PO4 ; X-RAY DIFFRACTION 1.65Å

e1z4qA1[A:34-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase ; ligands: D4M,MG ; X-RAY DIFFRACTION 2.05Å

e1z4pX1[X:34-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase ; ligands: DGP,MG ; X-RAY DIFFRACTION 2.00Å

e2jauA1[A:34-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-DEOXYRIBONUCLEOTIDASE ; ligands: ATM,MG,PO4 ; X-RAY DIFFRACTION 1.80Å

e1z4jA1[A:34-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase ; ligands: GOL,MG,U2P ; X-RAY DIFFRACTION 1.8Å

e1z4kA1[A:34-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase ; ligands: MG,T3P ; X-RAY DIFFRACTION 1.75Å

e1z4lA1[A:34-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase ; ligands: MG,TMP ; X-RAY DIFFRACTION 1.8Å

e1q91A1[A:34-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5(3)-DEOXYRIBONUCLEOTIDASE ; ligands: DPB,MG,PO4 ; X-RAY DIFFRACTION 1.6Å

e1z4mA1[A:34-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase ; ligands: GOL,MG,U5P ; X-RAY DIFFRACTION 1.7Å

e2jawA1[A:34-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-DEOXYRIBONUCLEOTIDASE ; ligands: BVP,MG ; X-RAY DIFFRACTION 1.95Å

e1z4iA1[A:34-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase ; ligands: GOL,MG,UMP ; X-RAY DIFFRACTION 1.98Å

e4e88A1[A:3-197] Image Pymol Jmol Links: PDB, SCOP, CATH

DE NOVO DESIGNED CYSTEINE ESTERASE ECH13 ; ligands: GOL ; X-RAY DIFFRACTION 2.0Å

e2i7dA1[A:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH

5'(3')-deoxyribonucleotidase, cytosolic type ; ligands: ALF,DUR,MG ; X-RAY DIFFRACTION 1.200Å

e3bwvA1[A:2-178] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative 5'(3')-deoxyribonucleotidase ; ligands: MG ; X-RAY DIFFRACTION 1.54Å

e2jaoA1[A:4-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-DEOXYRIBONUCLEOTIDASE ; ligands: DGP,GOL,MG ; X-RAY DIFFRACTION 2.00Å

e3u13A1[A:3-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ARTIFICIAL PROTEIN OR51 ; ligands: MG,NA,PEG,PO4 ; X-RAY DIFFRACTION 1.6Å

e2i7dB1[B:4-195] Image Pymol Jmol Links: PDB, SCOP, CATH

5'(3')-deoxyribonucleotidase, cytosolic type ; ligands: ALF,DUR,MG ; X-RAY DIFFRACTION 1.200Å

e3bwvB1[B:3-178] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative 5'(3')-deoxyribonucleotidase ; ligands: CL,MG ; X-RAY DIFFRACTION 1.54Å

e2jarA1[A:4-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-DEOXYRIBONUCLEOTIDASE ; ligands: MG,UMP ; X-RAY DIFFRACTION 1.95Å

e3u19A1[A:3-197] Image Pymol Jmol Links: PDB, SCOP, CATH

ARTIFICIAL PROTEIN OR51 ; ligands: GOL ; X-RAY DIFFRACTION 2.0Å

e4l6aA1[A:27-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase, mitochondrial ; ligands: GOL,K,MG,PEG,PO4 ; X-RAY DIFFRACTION 1.400Å

e4l57A1[A:4-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase, cytosolic type ; ligands: GOL,MG,NA,PO4 ; X-RAY DIFFRACTION 1.080Å

e4mumA1[A:27-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mitochondrial 5' nucleotidase ; ligands: CL,GOL,MG,PEG,PG4,PO4,TRS ; X-RAY DIFFRACTION 1.271Å

e4l57B1[B:4-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase, cytosolic type ; ligands: GOL,MG,PO4 ; X-RAY DIFFRACTION 1.080Å

e4l6cA1[A:27-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase, mitochondrial ; ligands: 0BT,EDO,GOL,MG,PO4 ; X-RAY DIFFRACTION 1.800Å

e4mwoA1[A:35-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase, mitochondrial ; ligands: 2E2,GOL,K,PO4 ; X-RAY DIFFRACTION 1.670Å

e4nflA1[A:27-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5'(3')-deoxyribonucleotidase, mitochondrial ; ligands: 2JW,GOL,MG,PEG,PO4,TRS ; X-RAY DIFFRACTION 1.375Å

e4yihA1[A:4-195] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

5'(3')-deoxyribonucleotidase, cytosolic type ; ligands: 2O2,GOL,MG,PO4 ; X-RAY DIFFRACTION 1.820Å

e4yihB1[B:4-195] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

5'(3')-deoxyribonucleotidase, cytosolic type ; ligands: 2O2,MG,PO4 ; X-RAY DIFFRACTION 1.820Å

e4yikA1[A:27-227] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

5'(3')-deoxyribonucleotidase, mitochondrial ; ligands: 2O2,GOL,MG,PEG,PO4,TRS ; X-RAY DIFFRACTION 1.483Å

e6g2lA1[A:27-29,A:32-227] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

5'(3')-deoxyribonucleotidase, mitochondrial ; ligands: BME,EJ8,GOL,MG ; X-RAY DIFFRACTION 1.48Å

e6g2nA1[A:8-199] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

5'(3')-deoxyribonucleotidase, cytosolic type ; ligands: MG,O84 ; X-RAY DIFFRACTION 1.40Å

e6g2nB1[B:8-199] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

5'(3')-deoxyribonucleotidase, cytosolic type ; ligands: MG,O84 ; X-RAY DIFFRACTION 1.40Å

e6g22A1[A:35-227] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

5'(3')-deoxyribonucleotidase, mitochondrial ; ligands: 2O2,BME,GOL,MG ; X-RAY DIFFRACTION 1.85Å

e6g2mA1[A:27-29,A:32-227] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

5'(3')-deoxyribonucleotidase, mitochondrial ; ligands: BME,EDO,GOL,K,MG,O84 ; X-RAY DIFFRACTION 1.37Å

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.

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