Archaebacteria and eukaryotes possess DNA-dependent RNA polymerases of a common type.
DNA-dependent RNA polymerases of archaebacteria not only resemble the nuclear RNA polymerases of eukaryotes rather than the eubacterial enzymes in their complex component patterns but also show striking immunochemical, i.e., structural, homology with the eukaryotic polymerases at the level of single components. Thus, eukaryotic and archaebacterial RNA polymerases are indeed of the same type, distinct from the eubacterial enzymes, which, however, are also derived from a common ancestral structure.
Huet
J
J
Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, France.
Schnabel
R
R
Sentenac
A
A
Zillig
W
W
D001105:Archaea / Q000201:enzymology*; D012321:DNA-Directed RNA Polymerases / Q000032:analysis* / Q000276:immunology; D005057:Eukaryotic Cells / Q000201:enzymology
D012321:DNA-Directed RNA Polymerases