| Literature DB >> 16453454 |
R Schnabel1, M Thomm, R Gerardy-Schahn, W Zillig, K O Stetter, J Huet.
Abstract
The archaebacterial DNA-dependent RNA polymerases have a complex structure containing eight or more components. Immunochemical analysis shows an extensive homology between the components of the enzymes of nine different species. Two enzyme subtypes can be distinguished: that of the thermoacidophilic and/or sulfur-metabolizing archaebacteria with the composition BACDEFGHIJ and that of the methanogenic plus halophilic archaebacteria with the composition ABB'C(D).... Components B and B' of the latter subtype probably evolved by the division of the large component B of the BACD... type enzyme. The existence of the two subtypes corroborates the division of the archaebacteria into two phylogenetic main branches.Entities:
Year: 1983 PMID: 16453454 PMCID: PMC555180 DOI: 10.1002/j.1460-2075.1983.tb01495.x
Source DB: PubMed Journal: EMBO J ISSN: 0261-4189 Impact factor: 11.598