Results 111 to 120 of about 8,929 (131)

The Gfr uptake system provides a context-dependent fitness advantage toSalmonellaTyphimurium SL1344 during the initial gut colonization phase

open access: yes
Fuchs L   +9 more
europepmc   +1 more source

High-affinity l-arabinose transport operon

open access: closedJournal of Molecular Biology, 1987
Various portions of the "high-affinity" L-arabinose transport operon were cloned into the plasmid expression vector pKK223-3 and the operon-encoded protein products were identified. The results indicate that three proteins are encoded by this operon.
J. Benjamin Scripture   +7 more
  +9 more sources

Proflavin-induced mutations in the l-arabinose operon of Escherichia coli

open access: closedJournal of Molecular Biology, 1969
Abstract The enzymic activities of mutant gene products, as well as the enzymic activities of products from adjacent genes, were assayed in strains harboring proflavin-induced frame-shift mutations in the L-arabinose (ara) operon. Such mutations in araB were found to depress strongly the expression of the adjacent gene, araA. Frame-shift mutations in
Suzanne Sesnowitz-Horn   +1 more
  +8 more sources

The regulatory region of the l-arabinose operon: A physical, genetic and physiological study

open access: closedJournal of Molecular Biology, 1975
Abstract A fine-structure physical and genetic map was constructed of a 1000 base-pair region of the l -arabinose operon of Escherichia coli. This region consists of the ara regulatory sequences contained between the araC and araB genes and portions of these flanking genes.
Robert Schleif, John T. Lis
openalex   +4 more sources

l-arabinose operon messenger of Escherichia coli

open access: closedJournal of Molecular Biology, 1971
Abstract Synthesis of messenger RNA from the positively controlled l -arabinose operon is shown to be induced by the presence of arabinose in the medium. Messengers from the arabinose and lactose operons are translated with comparable efficiencies.
Robert Schleif
openalex   +4 more sources

Interaction of the regulatory gene product with the operator site in the l-arabinose operon of Escherichia coli

open access: closedJournal of Molecular Biology, 1974
Abstract The DNA binding properties of the araC protein in the absence of l -arabinose have been studied in Escherichia coli using the nitrocellulose membrane filter technique. Equilibrium competition experiments demonstrate that the araC protein binds specifically to the ara operator. The apparent Km of the interaction is 1 × 10−12 m at 20 °C. The
Gary Wilcox   +3 more
openalex   +3 more sources

Bistability and Asynchrony in a Boolean Model of the l-arabinose Operon in Escherichia coli

open access: closedBulletin of Mathematical Biology, 2017
The lactose operon in Escherichia coli was the first known gene regulatory network, and it is frequently used as a prototype for new modeling paradigms. Historically, many of these modeling frameworks use differential equations. More recently, Stigler and Veliz-Cuba proposed a Boolean model that captures the bistability of the system and all of the ...
Andy Jenkins, Matthew Macauley
openalex   +4 more sources

Regulation of the Escherichia coli l-arabinose operon studied by gel electrophoresis DNA binding assay

open access: closedJournal of Molecular Biology, 1984
DNA binding properties of the proteins required for induction of the Escherichia coli L-arabinose operon were measured using a polyacrylamide gel electrophoresis assay. The mechanisms of induction and repression were studied by observing the multiple interactions of RNA polymerase, cyclic AMP receptor protein and araC protein with short DNA fragments ...
William Hendrickson, Robert Schleif
openalex   +4 more sources

Expression of E. coli araBAD operon encoding enzymes for metabolizing L-arabinose in Saccharomyces cerevisiae

open access: closedEnzyme and Microbial Technology, 2001
The Escherichia coli araBAD operon consists of three genes encoding three enzymes that convert L-arabinose to D-xylulose-5 phosphate. In this paper we report that the genes of the E. coli araBAD operon have been expressed in Saccharomyces cerevisiae using strong promoters from genes encoding S.
Miroslav Sedlák, Nancy W. Y. Ho
openalex   +4 more sources

The site for catabolite deactivation in the L-arabinose BAD operon in Escherichia coli B/r

open access: closedArchives of Microbiology, 1976
A series of deletions beginning in the leu operon and continuing into the araC gene and also into the ara controlling site region were analyzed in reciprocal merodiploids, e.g., F' A2Cc67/B24delta719, F' B24delta719/A2Cc67, for their effects on catabolite deactivation (CD).
Richard Bass   +3 more
openalex   +4 more sources

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