Genetic mapping in Escherichia coli of tmk, the locus for dTMP kinase

Genetic Mapping of the Locus for Detergent-Resistant Phospholipase A (pidA) in Escherichia coli K-12

An Escherichia coli K-12 mutant deficient for detergent-resistant (DR) phospholipase A, a principal enzyme catalyzing the first step in phospholipid degradation, was characterized genetically. The mutation was found to affect the locus pidA (phospholipid degradation), which is cotransducible both with ilv and metE at a frequencies of 13 and 78%, respectively, and shown to lie between the ilv an...

Genetic mapping of the locus for detergent-resistant phospholipase A(pldA) in Escherichia coli K-12.

An Escherichia coli K-12 mutant deficient for detergent-resistant (DR) phospholipase A, a principal enzyme catalyzing the first step in phospholipid degradation, was characterized genetically. The mutation was found to affect the locus pldA (phospholipid degradation), which is cotransducible both with ilv and metE at a frequencies of 13 and 78%, respectively, and shown to lie between the ilv an...

Mapping of a new genetic locus responsible for ampicillin resistance in Escherichia coli.

The ampicillin resistance locus of three different ampicillin-resistant, temperature-sensitive Escherichia coli mutants was mapped between proC and purE and does not correspond to any of the known genes in this region. The mutant gene responsible for the temperature sensitivity and consequent morphological changes in each mutant strain was not located in the same 5-min region, even though the t...

Genetic mapping of the minB locus in Escherichia coli K-12.

The minB (minicell production) locus of Escherichia coli K-12 was mapped by transduction using bacteriophage P1. minB is located at min 25.6, between purB (min 25.2) and dadR (min 25.8). The mapping was facilitated by the use of insertion zcf-236::Tn10, which is inserted at min 25.4.

Genetic locus for ribonuclease I in Escherichia coli.