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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

X: alpha/beta-Hammerhead/Barrel-sandwich hybrid
H: alpha/beta-Hammerhead/Barrel-sandwich hybrid
T: CO dehydrogenase molybdoprotein N-domain-like
F: PurK_C

PF17769 CL0105

Representatives:

e3etjA2[A:277-355] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosylaminoimidazole carboxylase ATPase subunit ; X-RAY DIFFRACTION 1.60Å

e3k5hA3[A:307-382] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosyl-aminoimidazole carboxylase ; X-RAY DIFFRACTION 2.1Å

e3k5hC2[C:307-382] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosyl-aminoimidazole carboxylase ; X-RAY DIFFRACTION 2.1Å

e3k5iC2[C:307-382] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosyl-aminoimidazole carboxylase ; ligands: AIR ; X-RAY DIFFRACTION 2.0Å

e3k5hB2[B:307-381] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosyl-aminoimidazole carboxylase ; X-RAY DIFFRACTION 2.1Å

e3k5hD2[D:307-381] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosyl-aminoimidazole carboxylase ; X-RAY DIFFRACTION 2.1Å

e3k5iA2[A:307-381] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosyl-aminoimidazole carboxylase ; ligands: AIR ; X-RAY DIFFRACTION 2.0Å

e3k5iB2[B:307-381] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosyl-aminoimidazole carboxylase ; ligands: AIR ; X-RAY DIFFRACTION 2.0Å

e3k5iD2[D:307-380] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosyl-aminoimidazole carboxylase ; ligands: AIR ; X-RAY DIFFRACTION 2.0Å

e4mamA3[A:299-373] Image Pymol Jmol Links: PDB, SCOP, CATH

Phosphoribosylaminoimidazole carboxylase, ATPase subunit ; ligands: A12,GOL ; X-RAY DIFFRACTION 1.474Å

e4ma0A3[A:299-366] Image Pymol Jmol Links: PDB, SCOP, CATH

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE, ATPASE SUBUNIT ; ligands: PEG ; X-RAY DIFFRACTION 1.98Å

e4m9uA2[A:299-365] Image Pymol Jmol Links: PDB, SCOP, CATH

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE, ATPASE SUBUNIT ; ligands: ACT,CL,FMT ; X-RAY DIFFRACTION 1.6Å

e4ma5A6[A:299-365] Image Pymol Jmol Links: PDB, SCOP, CATH

Phosphoribosylaminoimidazole carboxylase, ATPase subunit ; ligands: GOL ; X-RAY DIFFRACTION 1.809Å

e4mamB2[B:299-365] Image Pymol Jmol Links: PDB, SCOP, CATH

Phosphoribosylaminoimidazole carboxylase, ATPase subunit ; ligands: GOL ; X-RAY DIFFRACTION 1.474Å

e5jqwA1[A:299-365] Image Pymol Jmol Links: PDB, SCOP, CATH

N5-carboxyaminoimidazole ribonucleotide synthase ; ligands: ACT ; X-RAY DIFFRACTION 2.06Å

e3ax6A9[A:297-373] Image Pymol Jmol Links: PDB, SCOP, CATH

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE, ATPASE SUBUNIT ; X-RAY DIFFRACTION 2.2Å

e3ax6B9[B:297-373] Image Pymol Jmol Links: PDB, SCOP, CATH

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE, ATPASE SUBUNIT ; X-RAY DIFFRACTION 2.2Å

e3ax6D9[D:297-373] Image Pymol Jmol Links: PDB, SCOP, CATH

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE, ATPASE SUBUNIT ; X-RAY DIFFRACTION 2.2Å

e3ax6C2[C:297-373] Image Pymol Jmol Links: PDB, SCOP, CATH

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE, ATPASE SUBUNIT ; X-RAY DIFFRACTION 2.2Å

e1b6rA2[A:277-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE SYNTHETASE) ; ligands: SO4 ; X-RAY DIFFRACTION 2.1Å

e1b6sA2[A:277-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE SYNTHETASE) ; X-RAY DIFFRACTION 2.5Å

e1b6sB2[B:277-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE SYNTHETASE) ; X-RAY DIFFRACTION 2.5Å

e1b6sC2[C:277-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE SYNTHETASE) ; X-RAY DIFFRACTION 2.5Å

e1b6sD2[D:277-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE SYNTHETASE) ; X-RAY DIFFRACTION 2.5Å

e3ethA2[A:277-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosylaminoimidazole carboxylase ATPase subunit ; X-RAY DIFFRACTION 1.6Å

e3ethB2[B:277-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosylaminoimidazole carboxylase ATPase subunit ; X-RAY DIFFRACTION 1.6Å

e3etjB2[B:277-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosylaminoimidazole carboxylase ATPase subunit ; X-RAY DIFFRACTION 1.60Å

e3aw8A3[A:296-366] Image Pymol Jmol Links: PDB, SCOP, CATH

Phosphoribosylaminoimidazole carboxylase, ATPase subunit ; ligands: CL ; X-RAY DIFFRACTION 2.60Å

e3aw8B2[B:290-360] Image Pymol Jmol Links: PDB, SCOP, CATH

Phosphoribosylaminoimidazole carboxylase, ATPase subunit ; ligands: CL ; X-RAY DIFFRACTION 2.60Å

e4e4tA6[A:315-398] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE, ATPASE SUBUNIT ; ligands: SO4 ; X-RAY DIFFRACTION 1.55Å

e4izoA6[A:315-397] Image Pymol Jmol Links: PDB, SCOP, CATH

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE, ATPASE SUBUNIT ; X-RAY DIFFRACTION 1.85Å

e4e4tB8[B:315-398] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE, ATPASE SUBUNIT ; ligands: SO4 ; X-RAY DIFFRACTION 1.55Å

e2z04B3[B:289-356] Image Pymol Jmol Links: PDB, SCOP, CATH

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE ATPASE SUBUNIT ; ligands: SO4 ; X-RAY DIFFRACTION 2.35Å

e3r5hA6[A:308-383] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosylaminoimidazole carboxylase, ATPase subunit ; ligands: AIR ; X-RAY DIFFRACTION 2.200Å

e3v4sA6[A:308-381] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosylaminoimidazole carboxylase, ATPase subunit ; ligands: CO3 ; X-RAY DIFFRACTION 2.02Å

e3v4sB6[B:308-380] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosylaminoimidazole carboxylase, ATPase subunit ; ligands: CO3 ; X-RAY DIFFRACTION 2.02Å

e4dlkB6[B:308-380] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosylaminoimidazole carboxylase, ATPase subunit ; X-RAY DIFFRACTION 2.02Å

e3q2oB6[B:308-377] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE, ATPASE SUBUNIT ; X-RAY DIFFRACTION 1.96Å

e3qffA6[A:308-377] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N5-carboxyaminoimidazole ribonucleotide synthetase ; X-RAY DIFFRACTION 1.960Å

e3qffB6[B:308-377] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N5-carboxyaminoimidazole ribonucleotide synthetase ; X-RAY DIFFRACTION 1.960Å

e3r5hB6[B:308-377] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosylaminoimidazole carboxylase, ATPase subunit ; ligands: AIR ; X-RAY DIFFRACTION 2.200Å

e4dlkA1[A:308-380] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoribosylaminoimidazole carboxylase, ATPase subunit ; ligands: ATP ; X-RAY DIFFRACTION 2.02Å

e3q2oA2[A:308-377] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE, ATPASE SUBUNIT ; X-RAY DIFFRACTION 1.96Å

e3orqA1[A:307-371] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE SYNTHETASE ; ligands: POP ; X-RAY DIFFRACTION 2.23Å

e3orqB1[B:307-374] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE SYNTHETASE ; ligands: POP ; X-RAY DIFFRACTION 2.23Å

e2z04A1[A:289-354] Image Pymol Jmol Links: PDB, SCOP, CATH

PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE ATPASE SUBUNIT ; ligands: SO4 ; X-RAY DIFFRACTION 2.35Å

e3orrB1[B:307-372] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE SYNTHETASE ; X-RAY DIFFRACTION 2.23Å

e3orrA1[A:307-371] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE SYNTHETASE ; X-RAY DIFFRACTION 2.23Å

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.

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