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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: RuvC

PF02075 CL0219

Representatives:

e1hjrA1[A:1-158] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HOLLIDAY JUNCTION RESOLVASE (RUVC) ; X-RAY DIFFRACTION

e1hjrC1[C:1-158] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HOLLIDAY JUNCTION RESOLVASE (RUVC) ; X-RAY DIFFRACTION

e1hjrB1[B:1-158] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HOLLIDAY JUNCTION RESOLVASE (RUVC) ; X-RAY DIFFRACTION

e1hjrD1[D:1-158] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HOLLIDAY JUNCTION RESOLVASE (RUVC) ; X-RAY DIFFRACTION

e4ep4A1[A:1-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; X-RAY DIFFRACTION 1.280Å

e4ep5A1[A:1-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 2.070Å

e4ep4B1[B:1-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; ligands: GOL,MG ; X-RAY DIFFRACTION 1.280Å

e4ld0A1[A:1-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; X-RAY DIFFRACTION 3.7Å

e4ld0B1[B:0-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; X-RAY DIFFRACTION 3.7Å

e6s16A1[A:0-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; ligands: NA ; X-RAY DIFFRACTION 3.4Å

e6s16B1[B:0-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; ligands: CL,NA ; X-RAY DIFFRACTION 3.4Å

e6lw3A1[A:1-153] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; X-RAY DIFFRACTION 2.38Å

e6lw3B1[B:1-153] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; X-RAY DIFFRACTION 2.38Å

e7w8dA1[A:1-156] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; ligands: MG ; X-RAY DIFFRACTION 2.75Å

e7w8dB1[B:1-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; X-RAY DIFFRACTION 2.75Å

e7xhjA1[A:1-154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; X-RAY DIFFRACTION 1.600Å

e7xhjB1[B:1-154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Crossover junction endodeoxyribonuclease RuvC ; X-RAY DIFFRACTION 1.600Å

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