Results 221 to 230 of about 205,748 (273)
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Microbial & Comparative Genomics, 1998
To achieve coordinate gene regulation, yeast (Saccharomyces cerevisiae) appears to have exploited two distinct multifunction "operon" schemas: one, by concatenating originally separate functional domains into single polypeptides, and two, by linking opposite strand genes through common promoter elements.
X, Zhang, T F, Smith
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To achieve coordinate gene regulation, yeast (Saccharomyces cerevisiae) appears to have exploited two distinct multifunction "operon" schemas: one, by concatenating originally separate functional domains into single polypeptides, and two, by linking opposite strand genes through common promoter elements.
X, Zhang, T F, Smith
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2003
The major factor determining the different pathogenicities of meningococci and their close relatives, the gonococci, is the polysaccharide capsule. The capsule protects meningococci from complement attack and phagocytosis and is indispensable for systemic spread of the bacteria during sepsis and meningitis (1-5).
U, Vogel, H, Claus, M, Frosch
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The major factor determining the different pathogenicities of meningococci and their close relatives, the gonococci, is the polysaccharide capsule. The capsule protects meningococci from complement attack and phagocytosis and is indispensable for systemic spread of the bacteria during sepsis and meningitis (1-5).
U, Vogel, H, Claus, M, Frosch
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Annual Review of Genetics, 1972
Simple observation of living organisms allows one to conclude that the entire genetic potential of any given cell is never expressed at any given moment. In bacteria this phenomenon is termed genetic adaptation and it occurs in two apparently contradictory ways. The synthesis of enzymes responsible for a catabolic process generally appears to be turned
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Simple observation of living organisms allows one to conclude that the entire genetic potential of any given cell is never expressed at any given moment. In bacteria this phenomenon is termed genetic adaptation and it occurs in two apparently contradictory ways. The synthesis of enzymes responsible for a catabolic process generally appears to be turned
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2013
The biosynthesis of histidine has been studied extensively in Salmonella enterica and Escherichia coli. In these enterobacteria, a single operon composed of eight adjacent genes encodes the complete set of histidine biosynthetic enzymes. Three (hisD, hisNB,andhisIE) of the eight genes encode bifunctional enzymes, while two (hisH and hisF) encode a ...
P. Alifano, FANI, RENATO
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The biosynthesis of histidine has been studied extensively in Salmonella enterica and Escherichia coli. In these enterobacteria, a single operon composed of eight adjacent genes encodes the complete set of histidine biosynthetic enzymes. Three (hisD, hisNB,andhisIE) of the eight genes encode bifunctional enzymes, while two (hisH and hisF) encode a ...
P. Alifano, FANI, RENATO
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Trends in Biochemical Sciences, 1991
Ribosomal RNA (rRNA) operons of the archaea reflect both the unity and the diversity of this third primary taxon. They have proven to be a rich source of both molecular biological and phylogenetic information.
Garrett, Roger A. +4 more
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Ribosomal RNA (rRNA) operons of the archaea reflect both the unity and the diversity of this third primary taxon. They have proven to be a rich source of both molecular biological and phylogenetic information.
Garrett, Roger A. +4 more
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Polarity in the histidine operon
Journal of Molecular Biology, 1966Abstract Sixty-eight mutants in the C gene of the histidine operon in Salmonella typhimurium have been examined for polarity. All nonsense and frameshift mutants were found to be polar, whereas none of the missense mutants exhibited polarity. The mutants mapping on the side of the C cistron towards the operator region were more strongly polar ...
R G, Martin +3 more
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The Origin and Evolution of Operons: The Piecewise Building of the Proteobacterial Histidine Operon
Journal of Molecular Evolution, 2005The structure and organization of 470 histidine biosynthetic genes from 47 different proteobacteria were combined with phylogenetic inference to investigate the mechanisms responsible for assembly of the his pathway and the origin of his operons. Data obtained in this work showed that a wide variety of different organization strategies of his gene ...
FANI, RENATO, M. Brilli, P. Liò
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The Structure of the mer Operon
1985The DNA sequence has been determined for a 3.8-kb region which encodes the mercury-resistance (mer) operon of the IncFII plasmid NR1. The sequence reveals 4 open reading frames which could encode proteins of 12,522, 9,429, 14,965, and 58,912 d corresponding to the 4 previously described Hg-inducible proteins detected in minicells carrying mer+ plasmids.
P, Barrineau +5 more
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The Post-transcriptional Operon
2010A post-transcriptional operon is a set of monocistronic mRNAs encoding functionally related proteins that are co-regulated by a group of RNA-binding proteins and/or small non-coding RNAs so that protein expression is coordinated at the post-transcriptional level. The post-transcriptional operon model (PTO) is used to describe data from an assortment of
Tenenbaum, Scott A. +2 more
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microRNAs and the Operon Paper
Journal of Molecular Biology, 2011The "Operon paper" by F. Jacob and J. Monod started 50 years of research into understanding how the expression of genes is regulated on a molecular level. Ten years ago, microRNAs (miRNAs) emerged as major regulators of eukaryotic gene expression. Here, I will review the basic principles of gene regulation by miRNAs and how these principles can be ...
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