Search PubMed⌕ Search

Biomedical subjects

M Schwartz

Publications and source records attributed to M Schwartz.

At least 883 records · Page 49Linked to original sources

Nonsense mutations in the maltose A region of the genetic map of Escherichia coli.

The isolation of one amber mutation in malQ, one ochre mutation in malP, and seven amber mutations in malT is reported. A study of their phenotypic expressions in the presence of the amber suppressor su(III) and the ochre suppressor su(c) suggests that (i) malQ is the structural gene for amylomaltase; (ii) malQ and the structural gene for maltodextrin phosphorylase, malP, belong to the same operon; (iii) the malT product, which promotes the expression of the malP-malQ operon, is a protein synthesized in limiting amounts by the wild-type strain.

Chromosome Mapping↗

Genetic analysis of the maltose A region in Escherichia coli.

The genetic map of the maltose A locus of Escherichia coli contains at least three closely linked genes, malT, malP, and malQ. The order of these genes is established by deletion mapping. MalP and malQ, the presumed structural genes for maltodextrin phosphorylase and amylomaltase, belong to the same operon. MalT may be a regulator gene involved in the positive control of this operon.

Chromosome Mapping↗

Portal vein gas.

Explore the source record for details and available documents.

Adult↗