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
![](/ecod/img/m.gif)
![](/ecod/img/p.gif)
![](/ecod/img/p.gif)
![](/ecod/img/m.gif)
Representatives:
e1twfA5[A:375-435]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
DNA-DIRECTED RNA POLYMERASE II LARGEST SUBUNIT ; X-RAY DIFFRACTION 2.3Å
e6a5rA1[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e6a5tA2[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e6a5uA9[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e6a5vA8[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH
e6gykA3[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e6gylA5[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e6gymA6[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e6i84A5[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e6ir9A2[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e6j4wA4[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e6j4xA8[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e6j4yA1[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e6j4zA7[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e6j50A4[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e6j51A7[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e6hlsA6[A:506-580] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit RPA190 ; ELECTRON MICROSCOPY
e6hkoA4[A:506-580] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit RPA190 ; ELECTRON MICROSCOPY
e6hlqA7[A:506-580] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit RPA190 ; ELECTRON MICROSCOPY
e6hlrA9[A:506-580] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit RPA190 ; ELECTRON MICROSCOPY
e6inqA5[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e6o6cA8[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e6rqtA1[A:506-580] Image Pymol Jmol Links: PDB, SCOP, CATH
DNA-directed RNA polymerase I subunit RPA190 ; ELECTRON MICROSCOPY
e6rrdA5[A:506-580] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit RPA190 ; ELECTRON MICROSCOPY
e6ruiA7[A:506-580] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit RPA190 ; ELECTRON MICROSCOPY
e6ruoA5[A:506-580] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit RPA190 ; ELECTRON MICROSCOPY
e6rweA9[A:506-580] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit RPA190 ; ELECTRON MICROSCOPY
e6tutA9[A:403-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase III subunit RPC1 ; ELECTRON MICROSCOPY
e6tpsA3[A:506-580] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit RPA190 ; ELECTRON MICROSCOPY
e6upxA2[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.300Å
e6upyA5[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.290Å
e6upzA5[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.020Å
e6uq0A6[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.560Å
e6uq1A8[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.540Å
e6uq2A2[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.090Å
e6uq3A7[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.470Å
e7aocA7[A:514-596] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit rpa1 ; ELECTRON MICROSCOPY
e7aodA5[A:514-596] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit rpa1 ; ELECTRON MICROSCOPY
e7aodM1[M:514-596] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit rpa1 ; ELECTRON MICROSCOPY
e7aoeA6[A:514-596] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase I subunit rpa1 ; ELECTRON MICROSCOPY
e7b0yA9[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7lbmA2[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7edxo9[o:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7eg7o3[o:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7eg8o2[o:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7eg9o6[o:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7egao4[o:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7egbo6[o:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7nvrA5[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7nvsA8[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7nvtA9[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7nvuA3[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7nvyA7[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7nvzA5[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7nw0A8[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e6xreA6[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7kedA2[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.550Å
e7o4iA3[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7egco1[o:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7nkyA5[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7keeA2[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.410Å
e7kefA6[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.890Å
e7o4jA8[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7o72A7[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7o73A6[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7o75A1[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7f4gA5[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7okxA6[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7nkxA6[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e6gmhA6[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7okyA6[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7ol0A6[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7oznA5[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7oznM5[M:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPB1 ; ELECTRON MICROSCOPY
e7ozoA5[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7ozoM5[M:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7ozpA5[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7ozpM5[M:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7pksA6[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7rimA7[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 2.9Å
e7oobA3[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7ml0A2[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7ml1A6[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7ml2A1[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7ml4A5[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7ripA4[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.270Å
e7riqA6[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 2.960Å
e7riwA6[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.17Å
e7rixA8[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.3Å
e7riyA9[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; X-RAY DIFFRACTION 3.630Å
e7oo3A8[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7oopA3[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7opcA2[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7opdA2[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7meia2[a:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7meiA5[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7mk9A7[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7mkaa4[a:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7z1lA4[A:403-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase III subunit RPC1 ; ELECTRON MICROSCOPY
e7z1mA8[A:403-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase III subunit RPC1 ; ELECTRON MICROSCOPY
e7z1nA9[A:403-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase III subunit RPC1 ; ELECTRON MICROSCOPY
e7z1oA1[A:403-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase III subunit RPC1 ; ELECTRON MICROSCOPY
e7xn7A7[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7xseA2[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7xsxA8[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7xszA7[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7xtdA2[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7xt7A5[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7xtiA5[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7ui9A8[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7uifA9[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7uioAA4[AA:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7uioBA2[BA:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7zs9A7[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7zsaA7[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7zsbA5[A:375-435] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1 ; ELECTRON MICROSCOPY
e7zwdA3[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7zx7A4[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7zx8A5[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e8h0vA4[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e8h0wA8[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e8bvwA3[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e8byqA3[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e8bz1A2[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase subunit ; ELECTRON MICROSCOPY
e7ycx11[1:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase II subunit RPB1,DNA-directed RNA polymerase II subunit RPB1, CTD1, CTD2, CTD3, CTD4 ; ELECTRON MICROSCOPY
e8bwsA9[A:403-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase III subunit RPC1 ; ELECTRON MICROSCOPY
e7z0hA7[A:403-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase III subunit RPC1 ; ELECTRON MICROSCOPY
e7z2zA9[A:403-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase III subunit RPC1 ; ELECTRON MICROSCOPY
e7z30A7[A:403-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase III subunit RPC1 ; ELECTRON MICROSCOPY
e7z31A4[A:403-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA-directed RNA polymerase III subunit RPC1 ; ELECTRON MICROSCOPY
e8p4fA6[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8a40A7[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8b3dA6[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8oeuA5[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8p4aA5[A:389-449] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e7wbvA3[A:376-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
Previouse4c3hA3[A:506-580]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
DNA-DIRECTED RNA POLYMERASE I SUBUNIT RPA190 ; X-RAY DIFFRACTION 3.27Å
e4bxxA3[A:375-435]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 ; X-RAY DIFFRACTION 3.28Å
![](/ecod/img/p.gif)
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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