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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

mixed a+b and a/balpha and beta domain consists of both a+b and a/b regions

X: Ribonuclease H-like
H: Ribonuclease H-like
T: Ribonuclease H-like
F: Acetate_kinase

PF00871 CL0108

Representatives:

e2e1zA1[A:4-192] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate Kinase ; ligands: B4P,EDO ; X-RAY DIFFRACTION 1.98Å

e2e1zA2[A:193-397] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate Kinase ; ligands: B4P,EDO ; X-RAY DIFFRACTION 1.98Å

e1g99A1[A:1-197] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.5Å

e1sazA2[A:173-375] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROBABLE BUTYRATE KINASE 2 ; ligands: ACP,FMT,NA ; X-RAY DIFFRACTION 2.5Å

e1x9jB2[B:173-371] Image Pymol Jmol Links: PDB, SCOP, CATH

PROBABLE BUTYRATE KINASE 2 ; ligands: GOL,PO4 ; X-RAY DIFFRACTION 3.0Å

e1x9jG2[G:173-373] Image Pymol Jmol Links: PDB, SCOP, CATH

PROBABLE BUTYRATE KINASE 2 ; ligands: CIT,PO4 ; X-RAY DIFFRACTION 3.0Å

e1x9jH2[H:173-372] Image Pymol Jmol Links: PDB, SCOP, CATH

PROBABLE BUTYRATE KINASE 2 ; ligands: PO4 ; X-RAY DIFFRACTION 3.0Å

e1x9jE2[E:173-371] Image Pymol Jmol Links: PDB, SCOP, CATH

PROBABLE BUTYRATE KINASE 2 ; ligands: PO4 ; X-RAY DIFFRACTION 3.0Å

e1x9jC2[C:173-371] Image Pymol Jmol Links: PDB, SCOP, CATH

PROBABLE BUTYRATE KINASE 2 ; ligands: PO4 ; X-RAY DIFFRACTION 3.0Å

e1x9jF2[F:173-372] Image Pymol Jmol Links: PDB, SCOP, CATH

PROBABLE BUTYRATE KINASE 2 ; ligands: PO4 ; X-RAY DIFFRACTION 3.0Å

e1x9jD2[D:173-373] Image Pymol Jmol Links: PDB, SCOP, CATH

PROBABLE BUTYRATE KINASE 2 ; ligands: CIT,PO4 ; X-RAY DIFFRACTION 3.0Å

e1x9jA2[A:173-373] Image Pymol Jmol Links: PDB, SCOP, CATH

PROBABLE BUTYRATE KINASE 2 ; ligands: GOL,PO4 ; X-RAY DIFFRACTION 3.0Å

e2e1yA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; X-RAY DIFFRACTION 2.60Å

e1x3mA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: ADP ; X-RAY DIFFRACTION 2.2Å

e1tuuA2[A:198-398] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: ADP,SO4 ; X-RAY DIFFRACTION 2.5Å

e1tuyA2[A:198-398] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: ADP,SO4 ; X-RAY DIFFRACTION 3.0Å

e1tuyB2[B:198-398] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: ACY,ADP,AF3 ; X-RAY DIFFRACTION 3.0Å

e2e20A2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate Kinase ; ligands: B4P,EDO ; X-RAY DIFFRACTION 2.40Å

e1x3nA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: ANP,EDO ; X-RAY DIFFRACTION 2.30Å

e1tuuB2[B:198-398] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: AMP,PIS ; X-RAY DIFFRACTION 2.5Å

e1g99A2[A:198-398] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; ligands: ADP,SO4 ; X-RAY DIFFRACTION 2.5Å

e1g99B2[B:198-398] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; ligands: ADP,SO4 ; X-RAY DIFFRACTION 2.5Å

e3khyA1[A:191-384] Image Pymol Jmol Links: PDB, SCOP, CATH

Propionate kinase ; X-RAY DIFFRACTION 1.97Å

e3p4iA1[A:188-388] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: EDO ; X-RAY DIFFRACTION 2.350Å

e4dq8A2[A:187-386] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; X-RAY DIFFRACTION 2.250Å

e4h0pA1[A:212-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; X-RAY DIFFRACTION 1.89Å

e3sk3A2[A:200-400] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; ligands: CIT,EDO ; X-RAY DIFFRACTION 1.9Å

e4ijnA1[A:179-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: AMP,EDO,SO4 ; X-RAY DIFFRACTION 1.700Å

e2iirA2[A:197-400] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetate kinase ; X-RAY DIFFRACTION 3.300Å

e2iirB2[B:197-400] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetate kinase ; X-RAY DIFFRACTION 3.300Å

e2iirC2[C:197-400] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetate kinase ; X-RAY DIFFRACTION 3.300Å

e2iirD2[D:197-400] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetate kinase ; X-RAY DIFFRACTION 3.300Å

e2iirE2[E:197-400] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetate kinase ; X-RAY DIFFRACTION 3.300Å

e2iirF2[F:197-400] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetate kinase ; X-RAY DIFFRACTION 3.300Å

e2iirG2[G:197-400] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetate kinase ; X-RAY DIFFRACTION 3.300Å

e2iirH2[H:197-400] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetate kinase ; X-RAY DIFFRACTION 3.300Å

e2iirI2[I:197-400] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetate kinase ; X-RAY DIFFRACTION 3.300Å

e2iirJ2[J:197-400] Image Pymol Jmol Links: PDB, SCOP, CATH

Acetate kinase ; X-RAY DIFFRACTION 3.300Å

e3khyB2[B:191-384] Image Pymol Jmol Links: PDB, SCOP, CATH

Propionate kinase ; X-RAY DIFFRACTION 1.97Å

e4fwkA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: AMP ; X-RAY DIFFRACTION 2.800Å

e4fwlA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: EDO,PO4 ; X-RAY DIFFRACTION 2.400Å

e4fwmA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: ATP,EDO ; X-RAY DIFFRACTION 2.950Å

e4fwnA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: AQP,EDO ; X-RAY DIFFRACTION 3.000Å

e4fwoA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: 5GP,EDO ; X-RAY DIFFRACTION 2.900Å

e4fwpA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: EDO,GDP ; X-RAY DIFFRACTION 2.500Å

e4fwqA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: EDO,GTP ; X-RAY DIFFRACTION 2.650Å

e4fwrA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: C5P,EDO ; X-RAY DIFFRACTION 3.000Å

e4fwsA2[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: CTP,EDO ; X-RAY DIFFRACTION 2.690Å

e3sk3B4[B:200-400] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; ligands: CIT,EDO ; X-RAY DIFFRACTION 1.9Å

e3slcB4[B:200-400] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; ligands: EDO ; X-RAY DIFFRACTION 2.7Å

e3slcA4[A:200-400] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; ligands: EDO ; X-RAY DIFFRACTION 2.7Å

e3slcD4[D:200-400] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; X-RAY DIFFRACTION 2.7Å

e3slcC4[C:200-400] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; X-RAY DIFFRACTION 2.7Å

e4iz9A4[A:190-388] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: APC,EDO,MN,SIN ; X-RAY DIFFRACTION 1.98Å

e3r9pA4[A:189-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AckA ; ligands: EDO,GOL,PGE ; X-RAY DIFFRACTION 1.900Å

e3r9pB4[B:189-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AckA ; ligands: PGE ; X-RAY DIFFRACTION 1.900Å

e4ijnB4[B:179-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: AMP,EDO,SO4 ; X-RAY DIFFRACTION 1.700Å

e4dq8B6[B:187-385] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; X-RAY DIFFRACTION 2.250Å

e4h0oB4[B:190-392] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; X-RAY DIFFRACTION 2.4Å

e3p4iB4[B:188-388] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; X-RAY DIFFRACTION 2.350Å

e4h0pB3[B:212-434] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; X-RAY DIFFRACTION 1.89Å

e4h0oA4[A:190-392] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETATE KINASE ; X-RAY DIFFRACTION 2.4Å

e4xh4A1[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: ANP,GOL,PPI,SO4 ; X-RAY DIFFRACTION 1.80Å

e4xh5A1[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: ANP,GOL,PPI ; X-RAY DIFFRACTION 2.11Å

e4xh1A1[A:193-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Propionate kinase ; ligands: ANP,GOL,PPI ; X-RAY DIFFRACTION 2.00Å

e6ioyB1[B:198-398] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: SO4 ; X-RAY DIFFRACTION 1.94Å

e6ioyA2[A:198-398] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: MPD,SO4 ; X-RAY DIFFRACTION 1.94Å

e6ioyC1[C:198-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: SO4 ; X-RAY DIFFRACTION 1.94Å

e6ioyD1[D:198-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetate kinase ; ligands: MPD,SO4 ; X-RAY DIFFRACTION 1.94Å

e7fj7A1[A:197-396] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable propionate kinase ; X-RAY DIFFRACTION 2.50Å

e7fj7B1[B:197-396] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable propionate kinase ; X-RAY DIFFRACTION 2.50Å

e7fj8A2[A:197-396] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable propionate kinase ; ligands: AMP ; X-RAY DIFFRACTION 2.10Å

e7fj8B2[B:197-395] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable propionate kinase ; X-RAY DIFFRACTION 2.10Å

e7fj9A1[A:197-396] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable propionate kinase ; ligands: ACT,ANP ; X-RAY DIFFRACTION 2.30Å

e7fj9B1[B:197-395] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable propionate kinase ; ligands: ACT,ANP ; X-RAY DIFFRACTION 2.30Å

e7fjaA2[A:197-396] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable propionate kinase ; ligands: ANP,EDO ; X-RAY DIFFRACTION 2.20Å

e7fjbA2[A:197-396] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable propionate kinase ; ligands: ACT,ANP,NA ; X-RAY DIFFRACTION 2.40Å

e7fjaB2[B:199-395] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable propionate kinase ; ligands: ANP ; X-RAY DIFFRACTION 2.20Å

e7fjbB1[B:199-395] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable propionate kinase ; ligands: ANP,NA ; X-RAY DIFFRACTION 2.40Å

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.

few secondary structure elementsstabilized by cofactors or disulfides

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