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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

X: GIY-YIG endonuclease
H: GIY-YIG endonuclease
T: GIY-YIG endonuclease
F: GIY-YIG

PF01541 CL0418

Representatives:

e1mk0A1[A:1-97] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

Intron-associated endonuclease 1 ; ligands: BME,CIT ; X-RAY DIFFRACTION 1.6Å

e1ln0B1[B:1-94] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

intron-associated endonuclease 1 ; ligands: SO4 ; X-RAY DIFFRACTION 2.0Å

e1ln0A1[A:2-93] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

intron-associated endonuclease 1 ; ligands: SO4 ; X-RAY DIFFRACTION 2.0Å

e4xlgA1[A:3-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Structure-specific endonuclease subunit SLX1 ; ligands: CL ; X-RAY DIFFRACTION 1.78Å

e6sehC2[C:4-88,C:114-172,C:197-238] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Structure-specific endonuclease subunit SLX1 ; ligands: ZN ; X-RAY DIFFRACTION 3.15Å

e6seiA1[A:4-175,A:196-238] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Structure-specific endonuclease subunit SLX1 ; ligands: ZN ; X-RAY DIFFRACTION 2.69Å

e6sehA2[A:4-87,A:114-172,A:197-238] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Structure-specific endonuclease subunit SLX1 ; ligands: ZN ; X-RAY DIFFRACTION 3.15Å

e6seiC1[C:4-174,C:197-238] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Structure-specific endonuclease subunit SLX1 ; ligands: CA,ZN ; X-RAY DIFFRACTION 2.69Å

e7cq2B1[B:4-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Structure-specific endonuclease subunit SLX1 ; ligands: GOL ; X-RAY DIFFRACTION 2.500Å

e7cq3A1[A:7-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Structure-specific endonuclease subunit SLX1 ; ligands: SO4 ; X-RAY DIFFRACTION 1.449Å

e7cq2A1[A:6-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Structure-specific endonuclease subunit SLX1 ; ligands: GOL ; X-RAY DIFFRACTION 2.500Å

e7cq4A1[A:6-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Structure-specific endonuclease subunit SLX1 ; X-RAY DIFFRACTION 3.294Å

e2wshA1[A:-2-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ENDONUCLEASE II ; ligands: PO4 ; X-RAY DIFFRACTION 1.90Å

e1yczA1[A:1-89] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UvrABC system protein C ; ligands: GOL ; X-RAY DIFFRACTION 1.8Å

e1yd6A1[A:1-95] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UvrC ; ligands: CL,SO4 ; X-RAY DIFFRACTION 2Å

e1yd0A1[A:1-89] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UvrABC system protein C ; ligands: GOL,MN ; X-RAY DIFFRACTION 1.5Å

e1yd1A1[A:1-89] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UvrABC system protein C ; ligands: GOL,MG ; X-RAY DIFFRACTION 1.8Å

e1yd2A1[A:1-90] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UvrABC system protein C ; ligands: GOL,MN ; X-RAY DIFFRACTION 1.6Å

e1yd3A1[A:1-90] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UvrABC system protein C ; ligands: GOL,MN ; X-RAY DIFFRACTION 1.6Å

e1yd4A1[A:1-89] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UvrABC system protein C ; ligands: MN ; X-RAY DIFFRACTION 1.9Å

e1yd5A1[A:1-90] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UvrABC system protein C ; ligands: MN ; X-RAY DIFFRACTION 1.8Å

e1yd6B1[B:8-95] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UvrC ; ligands: CL,SO4 ; X-RAY DIFFRACTION 2Å

e1yd6C1[C:1-94] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UvrC ; ligands: CL,SO4 ; X-RAY DIFFRACTION 2Å

e1yd6D1[D:2-97] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UvrC ; ligands: CL,SO4 ; X-RAY DIFFRACTION 2Å

e2wshB1[B:-2-131] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ENDONUCLEASE II ; ligands: PEG ; X-RAY DIFFRACTION 1.90Å

e2wshC1[C:-3-131] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ENDONUCLEASE II ; ligands: PEG ; X-RAY DIFFRACTION 1.90Å

e2wshD1[D:-2-131] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ENDONUCLEASE II ; X-RAY DIFFRACTION 1.90Å

e1ywlA1[A:1-96] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Hypothetical UPF0213 protein EF2693 ; SOLUTION NMR

e1zg2A1[A:6-99] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Hypothetical UPF0213 protein BH0048 ; SOLUTION NMR

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 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