Alanine-Scanning Mutagenesis of Human Transcript Elongation Factor TFIIS

Biochemistry ◽  
1995 ◽  
Vol 34 (46) ◽  
pp. 15375-15380 ◽  
Author(s):  
Guadalupe Cipres-Palacin ◽  
Caroline M. Kane
Keyword(s):  
Elongation Factor ◽  
Alanine Scanning Mutagenesis ◽  
Alanine Scanning ◽  
Transcript Elongation ◽  
Human Transcript

scholarly journals Comprehensive Alanine-scanning Mutagenesis of Escherichia coli CsrA Defines Two Subdomains of Critical Functional Importance

2006 ◽  
Vol 281 (42) ◽  
pp. 31832-31842
Author(s):  
Jeffrey Mercante ◽  
Kazushi Suzuki ◽  
Xiaodong Cheng ◽  
Paul Babitzke ◽  
Tony Romeo
Keyword(s):  
Escherichia Coli ◽  
Functional Importance ◽  
Alanine Scanning Mutagenesis ◽  
Alanine Scanning

scholarly journals Mapping of an NH-terminal Ligand Binding Site of the Insulin Receptor by Alanine Scanning Mutagenesis

1995 ◽  
Vol 270 (7) ◽  
pp. 3012-3016 ◽  
Author(s):  
Paul F. Williams ◽  
Dennis C. Mynarcik ◽  
Gui Qin Yu ◽  
Jonathan Whittaker
Keyword(s):  
Ligand Binding ◽  
Insulin Receptor ◽  
Binding Site ◽  
Ligand Binding Site ◽  
Alanine Scanning Mutagenesis ◽  
Alanine Scanning ◽  
Terminal Ligand

Detection of Asp371, Phe375, and Tyr376 Influence on GD-95-10 Lipase Using Alanine Scanning Mutagenesis

2015 ◽  
Vol 178 (4) ◽  
pp. 654-669 ◽  
Author(s):  
Renata Gudiukaitė ◽  
Audrius Gegeckas ◽  
Mikas Sadauskas ◽  
Donaldas Citavicius
Keyword(s):  
Alanine Scanning Mutagenesis ◽  
Alanine Scanning

Genetic interaction between transcription elongation factor TFIIS and RNA polymerase II

1992 ◽  
Vol 12 (9) ◽  
pp. 4142-4152
Author(s):  
J Archambault ◽  
F Lacroute ◽  
A Ruet ◽  
J D Friesen
Keyword(s):  
Rna Polymerase ◽  
Rna Polymerase Ii ◽  
Structural Integrity ◽  
Genetic Interaction ◽  
Elongation Factor ◽  
Chemical Mutagenesis ◽  
Yeast Genome ◽  
Transcript Elongation

Little is known about the regions of RNA polymerase II (RNAPII) that are involved in the process of transcript elongation and interaction with elongation factors. One elongation factor, TFIIS, stimulates transcript elongation by binding to RNAPII and facilitating its passage through intrinsic pausing sites in vitro. In Saccharomyces cerevisiae, TFIIS is encoded by the PPR2 gene. Deletion of PPR2 from the yeast genome is not lethal but renders cells sensitive to the uracil analog 6-azauracil (6AU). Here, we show that mutations conferring 6AU sensitivity can also be isolated in the gene encoding the largest subunit of S. cerevisiae RNAPII (RPO21). A screen for mutations in RPO21 that confer 6AU sensitivity identified seven mutations that had been generated by either linker-insertion or random chemical mutagenesis. All seven mutational alterations are clustered within one region of the largest subunit that is conserved among eukaryotic RNAPII. The finding that six of the seven rpo21 mutants failed to grow at elevated temperature underscores the importance of this region for the functional and/or structural integrity of RNAPII. We found that the 6AU sensitivity of the rpo21 mutants can be suppressed by increasing the dosage of the wild-type PPR2 gene, presumably as a result of overexpression of TFIIS. These results are consistent with the proposal that in the rpo21 mutants, the formation of the RNAPII-TFIIS complex is rate limiting for the passage of the mutant enzyme through pausing sites. In addition to implicating a region of the largest subunit of RNAPII in the process of transcript elongation, our observations provide in vivo evidence that TFIIS is involved in transcription by RNAPII.

CompASM: an Amber-VMD alanine scanning mutagenesis plug-in

2012 ◽  
pp. 81-87 ◽  
Author(s):  
João V. Ribeiro ◽  
Nuno M. F. S. A. Cerqueira ◽  
Irina S. Moreira ◽  
Pedro A. Fernandes ◽  
Maria João Ramos
Keyword(s):  
Alanine Scanning Mutagenesis ◽  
Alanine Scanning
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