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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: DNA methylase specificity domain
H: DNA methylase specificity domain
T: DNA methylase specificity domain
F: TaqI_C

PF12950 CL0477

Representatives:

e2ih2A1[A:244-413] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Modification methylase TaqI ; X-RAY DIFFRACTION 1.6Å

e7lt5B2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.54Å

e7lniA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; X-RAY DIFFRACTION 2.68Å

e7lniB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.68Å

e7lniC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; X-RAY DIFFRACTION 2.68Å

e7lnjA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; X-RAY DIFFRACTION 2.68Å

e7lnjB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; X-RAY DIFFRACTION 2.68Å

e7lnjC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; X-RAY DIFFRACTION 2.68Å

e7lt5A2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.54Å

e7lt5C2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; X-RAY DIFFRACTION 2.54Å

e7rfkA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.05Å

e7rfkB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.05Å

e7rfkC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.05Å

e7rflA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.38Å

e7rflB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.38Å

e7rflC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.38Å

e7rfmA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.68Å

e7rfmB2[B:317-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.68Å

e7rfmC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.68Å

e7rfnA2[A:317-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.50Å

e7rfnB2[B:317-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.50Å

e7rfnC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.50Å

e8cxsA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; X-RAY DIFFRACTION 2.49Å

e8cxsB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.49Å

e8cxsC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; X-RAY DIFFRACTION 2.49Å

e8cxtA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; X-RAY DIFFRACTION 2.61Å

e8cxtB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.61Å

e8cxtC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.61Å

e8cxuA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.28Å

e8cxuB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.28Å

e8cxuC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.28Å

e8cxvA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.26Å

e8cxvB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.26Å

e8cxvC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.26Å

e8cxwA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.78Å

e8cxwB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.78Å

e8cxwC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.78Å

e8cxxA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.34Å

e8cxxB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.34Å

e8cxxC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.34Å

e8cxyA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.19Å

e8cxyB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.19Å

e8cxyC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.19Å

e8cxzA2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.35Å

e8cxzB2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.35Å

e8cxzC2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.35Å

e8cy0A2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.65Å

e8cy0B2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.65Å

e8cy0C2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.65Å

e8cy1A2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.38Å

e8cy1B2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.38Å

e8cy1C2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.38Å

e8cy2A2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.81Å

e8cy2B2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.81Å

e8cy2C2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.81Å

e8cy3A2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.65Å

e8cy3B2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.65Å

e8cy3C2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.65Å

e8cy4A2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.34Å

e8cy4B2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.34Å

e8cy4C2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.34Å

e8cy5A2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.50Å

e8cy5B2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.50Å

e8cy5C2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.50Å

e8fs1A2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.74Å

e8fs1B2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.74Å

e8fs1C2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.74Å

e8fs2A2[A:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO ; X-RAY DIFFRACTION 2.59Å

e8fs2B2[B:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: EDO,K ; X-RAY DIFFRACTION 2.59Å

e8fs2C2[C:335-577] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Site-specific DNA-methyltransferase (adenine-specific) ; ligands: K ; X-RAY DIFFRACTION 2.59Å

e1aqiA1[A:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ADENINE-N6-DNA-METHYLTRANSFERASE TAQI ; X-RAY DIFFRACTION 2.6Å

e1aqiB1[B:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ADENINE-N6-DNA-METHYLTRANSFERASE TAQI ; X-RAY DIFFRACTION 2.6Å

e1aqjA1[A:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ADENINE-N6-DNA-METHYLTRANSFERASE TAQI ; X-RAY DIFFRACTION 2.6Å

e1aqjB1[B:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ADENINE-N6-DNA-METHYLTRANSFERASE TAQI ; X-RAY DIFFRACTION 2.6Å

e1g38A1[A:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MODIFICATION METHYLASE TAQI ; X-RAY DIFFRACTION 2.0Å

e1g38D1[D:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MODIFICATION METHYLASE TAQI ; X-RAY DIFFRACTION 2.0Å

e2admA1[A:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ADENINE-N6-DNA-METHYLTRANSFERASE TAQI ; X-RAY DIFFRACTION

e2admB1[B:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ADENINE-N6-DNA-METHYLTRANSFERASE TAQI ; X-RAY DIFFRACTION

e2ibsA1[A:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Modification methylase TaqI ; X-RAY DIFFRACTION 2.4Å

e2ibsD1[D:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Modification methylase TaqI ; X-RAY DIFFRACTION 2.4Å

e2ibtA1[A:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Modification methylase TaqI ; ligands: GOL ; X-RAY DIFFRACTION 1.7Å

e2ibtD1[D:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Modification methylase TaqI ; X-RAY DIFFRACTION 1.7Å

e2ih2D1[D:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH

Modification methylase TaqI ; X-RAY DIFFRACTION 1.6Å

e2ih4A1[A:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH

Modification methylase TaqI ; X-RAY DIFFRACTION 2.1Å

e2ih4D1[D:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH

Modification methylase TaqI ; X-RAY DIFFRACTION 2.1Å

e2jg3A1[A:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MODIFICATION METHYLASE TAQI ; X-RAY DIFFRACTION 1.90Å

e2jg3D1[D:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MODIFICATION METHYLASE TAQI ; X-RAY DIFFRACTION 1.90Å

e2np6A1[A:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH

Modification methylase TaqI ; ligands: IPA ; X-RAY DIFFRACTION 2.1Å

e2np6D1[D:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH

Modification methylase TaqI ; ligands: IPA ; X-RAY DIFFRACTION 2.1Å

e2np7A1[A:244-413] Image Pymol Jmol Links: PDB, SCOP, CATH

Modification methylase TaqI ; X-RAY DIFFRACTION 1.9Å

e2ih5A1[A:244-410] Image Pymol Jmol Links: PDB, SCOP, CATH

Modification methylase TaqI ; X-RAY DIFFRACTION 1.8Å

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