The largest subunit of human RNA polymerase III is closely related to the largest subunit of yeast and trypanosome RNA polymerase III.

Détails

ID Serval
serval:BIB_66ACD3160FEC
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
The largest subunit of human RNA polymerase III is closely related to the largest subunit of yeast and trypanosome RNA polymerase III.
Périodique
Genome Research
Auteur(s)
Sepehri S., Hernandez N.
ISSN
1088-9051 (Print)
ISSN-L
1088-9051
Statut éditorial
Publié
Date de publication
1997
Volume
7
Numéro
10
Pages
1006-1019
Langue
anglais
Résumé
In both yeast and mammalian systems, considerable progress has been made toward the characterization of the transcription factors required for transcription by RNA polymerase III. However, whereas in yeast all of the RNA polymerase III subunits have been cloned, relatively little is known about the enzyme itself in higher eukaryotes. For example, no higher eukaryotic sequence corresponding to the largest RNA polymerase III subunit is available. Here we describe the isolation of cDNAs that encode the largest subunit of human RNA polymerase III, as suggested by the observations that (1) antibodies directed against the cloned protein immunoprecipitate an active enzyme whose sensitivity to different concentrations of alpha-amanitin is that expected for human RNA polymerase III; and (2) depletion of transcription extracts with the same antibodies results in inhibition of transcription from an RNA polymerase III, but not from an RNA polymerase II, promoter. Sequence comparisons reveal that regions conserved in the RNA polymerase I, II, and III largest subunits characterized so far are also conserved in the human RNA polymerase III sequence, and thus probably perform similar functions for the human RNA polymerase III enzyme.
Mots-clé
Amino Acid Sequence, Animals, Antibody Specificity, Cell-Free System, Cloning, Molecular, Conserved Sequence, Evolution, Molecular, Humans, Molecular Sequence Data, Precipitin Tests, Protein Conformation, RNA Polymerase III/classification, RNA Polymerase III/genetics, Recombinant Proteins/isolation & purification, Saccharomyces cerevisiae/enzymology, Saccharomyces cerevisiae/genetics, Sequence Homology, Amino Acid, Species Specificity, Transcription, Genetic, Trypanosoma brucei brucei/enzymology, Trypanosoma brucei brucei/genetics
Pubmed
Web of science
Création de la notice
21/01/2008 16:33
Dernière modification de la notice
20/08/2019 14:22
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