Electrostatic properties of promoter recognized by E. coli RNA polymerase Esigma70.
A comparative analysis of electrostatic patterns for 359 sigma70-specific promoters and 359 nonpromoter regions on electrostatic map of Escherichia coli genome was carried out. It was found that DNA is not a uniformly charged molecule. There are some local inhomogeneities in its electrostatic profile which correlate with promoter sequences. Electrostatic patterns of promoter DNAs can be specified due to the presence of some distinctive motifs which differ for different promoter groups and may be involved as signal elements in differential recognition of various promoters by the enzyme. Some specific electrostatic elements which are responsible for modulating promoter activities due to ADP-ribosylation of RNA polymerase alpha-subunit were found in far upstream regions of T4 phage early promoters and E. coli ribosomal promoters.
Sorokin
Anatoly A
AA
Laboratory of Mechanisms of the Cell Genom Functioning, Institute of Cell Biophysics RAS, Pushchino, 142290, Russia. lptolikr@icb.psn.ru
Osypov
Alexandr A
AA
Dzhelyadin
Timur R
TR
Beskaravainy
Petr M
PM
Kamzolova
Svetlana G
SG
D001483:Base Sequence; D001665:Binding Sites; D002874:Chromosome Mapping / Q000379:methods*; D003198:Computer Simulation; D004269:DNA, Bacterial / Q000737:chemistry* / Q000235:genetics; D012321:DNA-Directed RNA Polymerases / Q000737:chemistry* / Q000235:genetics; D008956:Models, Chemical; D008958:Models, Molecular; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic; D011485:Protein Binding; D021122:Protein Subunits; D020539:Sequence Analysis, Protein / Q000379:methods*; D012808:Sigma Factor / Q000737:chemistry* / Q000235:genetics; D055672:Static Electricity
D004269:DNA, Bacterial; D021122:Protein Subunits; D012808:Sigma Factor; C081775:RNA polymerase sigma 70; D012321:DNA-Directed RNA Polymerases