Induction kinetics of the L-arabinose operon of Escherichia coli.

Induction of the ara operon of Escherichia coli B-r.

The inducer specificity and kinetics of induction of the ara operon were examined in Escherichia coli B/r. A difference in the kinetics of induction was found between our B/r strains and the K-12 strain previously described by Schleif. The roles of active transport and metabolism of inducer, and of cell density, in induction were studied. d-Fucose and beta-methyl-l-arabinoside were competitive ...

Using L-arabinose for Production of Human Growth Hormone in Escherichia coli, Studying the Processing of gIII::hGH Precursor

Mapping, sequence, and apparent lack of function of araJ, a gene of the Escherichia coli arabinose regulon.

We report the mapping, sequencing, and study of the physiological role of the fourth arabinose-inducible operon from Escherichia coli, araJ. It is located at 9 min on the chromosome and codes for a single 42-kDa protein that shows no significant homology to other known proteins. Destruction of the chromosomal araJ gene does not detectably affect either of the two arabinose transport systems, th...

L-arabinose operon of Escherichia coli

TIG December 2000, volume 16, No. 12 559 Over forty years of research on the L-arabinose operon of Escherichia coli have provided insights into the mechanism of positive regulation of gene activity. This research also discovered DNA looping and the mechanism by which the regulatory protein changes its DNA-binding properties in response to the presence of arabinose. As is frequently seen in focu...

Deoxyribonucleic acid-ribonucleic acid hybridization studies on the L-Arabinose operon of Escherichia coli B-r.

An increase in the rate of synthesis of ara-specific messenger ribonucleic acid as measured by deoxyribonucleic acid-ribonucleic acid hybridization has been detected in the induced wild-type (ara(+)) strain of Escherichia coli B/r as compared with the uninduced control, thus providing evidence that regulation of the positively controlled l-arabinose operon is at the level of transcription.