Results 11 to 20 of about 5,574 (175)

Effects of the Antiterminator BoxA on Transcription Elongation Kinetics and ppGpp Inhibition of Transcription Elongation in Escherichia coli [PDF]

open access: yesJournal of Biological Chemistry, 1995
It has been shown previously that two different mRNA chains (lacZ and infB) are elongated at a rate of approximately 40 nucleotides (nt)/s during steady state growth on minimal medium and that the rate of mRNA chain elongation is inhibited by ppGpp in vivo.
Ulla B Vogel
exaly   +3 more sources

Transcription-dependent competition for a host factor: the function and optimal sequence of the phage lambda boxA transcription antitermination signal. [PDF]

open access: yesGenes and Development, 1990
Ordered development of lambdoid phages relies on systems of transcription termination and antitermination. The phage-encoded N early regulatory proteins, acting with the Nus proteins of Escherichia coli, modify RNA polymerase to a form that overrides many transcription termination signals.
D I, Friedman   +4 more
exaly   +3 more sources

E. coli NusA protein binds in vitro to an RNA sequence immediately upstream of the boxA signal of bacteriophage lambda. [PDF]

open access: yesEMBO Journal, 1985
The NusA protein of Escherichia coli is a factor which mediates termination of transcription. In this paper, we demonstrate that the NusA protein can bind in vitro to a specific site on the mRNA of bacteriophage lambda. Several RNAs were synthesized by in vitro transcription of truncated lambda DNA templates, and the activity of NusA binding to these ...
A, Tsugawa   +4 more
exaly   +3 more sources

Fur activates the expression of Salmonella enterica pathogenicity island 1 by directly interacting with the hilD operator in vivo and in vitro. [PDF]

open access: yesPLoS ONE, 2011
Previous studies have established that the expression of Salmonella enterica pathogenicity island 1 (SPI1), which is essential for epithelial invasion, is mainly regulated by the HilD protein.
Laura Teixidó   +4 more
doaj   +1 more source

Automatic Integral Reduction for Higher Order Perturbative Calculations [PDF]

open access: yes, 2004
We present a program for the reduction of large systems of integrals to master integrals. The algorithm was first proposed by Laporta; in this paper, we implement it in MAPLE.
A Lazopoulos   +9 more
core   +11 more sources

HMGB1 Contributes to the Expression of P-Glycoprotein in Mouse Epileptic Brain through Toll-Like Receptor 4 and Receptor for Advanced Glycation End Products. [PDF]

open access: yesPLoS ONE, 2015
The objective of the present study was to investigate the role of high-mobility group box-1 (HMGB1) in the seizure-induced P-glycoprotein (P-gp) overexpression and the underlying mechanism.
Yan Chen   +7 more
doaj   +1 more source

RNase III participates in control of quorum sensing, pigmentation and oxidative stress resistance in Rhodobacter sphaeroides

open access: yesMolecular Microbiology, Volume 120, Issue 6, Page 874-892, December 2023., 2023
New functions for endoribonuclease III were unravelled in the facultative photosynthetic bacterium Rhodobacter sphaeroides by transcriptome analysis and phenotypic screening under three different growth conditions. The RNase III deficient mutant showed reduced pigmentation, linked to decreased expression of photosynthesis‐related mRNAs (bch and crt ...
Janek Börner   +2 more
wiley   +1 more source

Regulatory mechanisms of HMGB1 and its receptors in polycystic ovary syndrome‐driven gravid uterine inflammation

open access: yesThe FEBS Journal, Volume 290, Issue 7, Page 1874-1906, April 2023., 2023
Our study comprehensively profiles the gestational stage‐dependent regulation of HMGB1/TLR2/TLR4 proteins in the gravid uterus. Using an AR‐specific agonist and antagonist as well as the LPS‐induced fetal loss model in this study, we propose that the aberrant regulation of uterine HMGB1, TLR2 and TLR4 proteins contributes to aberrant inflammation ...
Min Hu   +8 more
wiley   +1 more source

Circumscription of Fulbrightiella gen. nov. and Sherwoodiella gen. nov., Two Novel Genera in the Calotrichaceae (Nostocales, Cyanobacteria)

open access: yesJournal of Phycology, Volume 59, Issue 1, Page 204-220, February 2023., 2023
Three novel strains in Calotrichaceae from tropical habitats were isolated and characterized with regard to their morphology, phylogenetic placement, and secondary structures of conserved domains in the 16S‐23S internal transcribed spacer (ITS). The strains fell into two clades formerly identified as Calothrix from freshwater and brackish habitats ...
Naresh Kumar   +5 more
wiley   +1 more source

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