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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

X: inserted helical subdomain in bacterial RNA-polymerase beta-prime subunit
H: inserted helical subdomain in bacterial RNA-polymerase beta-prime subunit
T: inserted helical subdomain in bacterial RNA-polymerase beta-prime subunit
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.

Representatives:

e2a69D5[D:654-696] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; ligands: MG ; X-RAY DIFFRACTION 2.5Å

e2o5iN2[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 2.5Å

e2o5jD9[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 3.0Å

e2o5jN1[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 3.0Å

e2ppbN4[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 3.0Å

e3aohI11[I:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 4.1Å

e3eqlD10[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 2.7Å

e3eqlN1[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 2.7Å

e4g7hD24[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 2.9Å

e4g7hN15[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 2.9Å

e4g7oD15[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 2.99Å

e4g7oN2[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 2.99Å

e4g7zD15[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 3.81Å

e4g7zN15[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 3.81Å

e4oioD8[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 3.1Å

e3dxjD8[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BACTRIAL RNA POLYMERASE BETA-PRIME SUBUNIT ; X-RAY DIFFRACTION 3.0Å

e3aoiI3[I:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 4.3Å

e4wqsN5[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.300Å

e4wqtN1[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.400Å

e4wqtI8[I:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.400Å

e4wqtD6[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.400Å

e4q4zD12[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 2.85Å

e4wqsD6[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.300Å

e3aoiN8[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 4.3Å

e3aoiD6[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 4.3Å

e5e17D7[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 3.2Å

e5e18D8[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 3.300Å

e3aohD5[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 4.1Å

e3aohN9[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 4.1Å

e4gzyD10[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 3.500Å

e4gzzD7[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.000Å

e4mq9D5[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' ; X-RAY DIFFRACTION 3.35Å

e2a68D6[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; ligands: MG ; X-RAY DIFFRACTION 2.5Å

e2a68N4[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; ligands: MG ; X-RAY DIFFRACTION 2.5Å

e2a69N1[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; ligands: MG ; X-RAY DIFFRACTION 2.5Å

e2a6eD2[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 2.8Å

e2a6eN7[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 2.8Å

e2a6hD1[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 2.4Å

e2a6hN2[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 2.4Å

e2be5D9[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 2.4Å

e2be5N3[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 2.4Å

e2cw0D5[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase beta' chain ; X-RAY DIFFRACTION 3.3Å

e2cw0N8[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase beta' chain ; X-RAY DIFFRACTION 3.3Å

e1iw7D6[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RNA POLYMERASE BETA SUBUNIT ; X-RAY DIFFRACTION 2.6Å

e1iw7N9[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RNA POLYMERASE BETA SUBUNIT ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e1smyD7[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; ligands: MG ; X-RAY DIFFRACTION 2.7Å

e1smyN2[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 2.7Å

e1zyrD6[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' CHAIN ; X-RAY DIFFRACTION 3.0Å

e1zyrN10[N:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE SUBUNIT BETA' CHAIN ; X-RAY DIFFRACTION 3.0Å

e5i2dD3[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.40Å

e5i2dO3[O:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.40Å

e5uh5D2[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 3.750Å

e5uh6D8[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 3.800Å

e5uh8D10[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.200Å

e5uh9D8[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.400Å

e5uhaD3[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 3.900Å

e5uhbD2[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.250Å

e5uhcD8[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 3.800Å

e5uhdD6[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.000Å

e5uheD3[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.050Å

e5uhfD9[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.350Å

e5uhgD1[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 4.000Å

e5vo8D1[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 3.3Å

e5voiD4[D:654-696] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 2.8Å

e5vi5D7[D:453-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 3.196Å

e2o5iD5[D:654-696] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-DIRECTED RNA POLYMERASE BETA' CHAIN ; X-RAY DIFFRACTION 2.5Å

e3dxjN2[N:654-696] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BACTRIAL RNA POLYMERASE BETA-PRIME SUBUNIT ; X-RAY DIFFRACTION 3.0Å

e4ljzD3[D:378-417] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 3.5871Å

e3wodD7[D:654-696] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA-directed RNA polymerase subunit beta' ; X-RAY DIFFRACTION 3.6Å

e1l9uD3[D:654-696] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RNA POLYMERASE, BETA-PRIME SUBUNIT ; X-RAY DIFFRACTION 4Å

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

few secondary structure elementsstabilized by cofactors or disulfides

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