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Article

UlaR activates expression of the ula operon in Streptococcus pneumoniae in the presence of ascorbic acid.

Microbiology (Reading, England) - 1 Jan 2015

Afzal Muhammad, Shafeeq Sulman, Henriques-Normark Birgitta, Kuipers Oscar P

Abstract excerpt

In this study, the regulatory mechanism of the ula (utilization of l-ascorbic acid) operon, putatively responsible for transport and utilization of ascorbic acid in Streptococcus pneumoniae strain D39, is studied. β-Galactosidase assay data demonstrate that expression of the ula operon is increased in the presence of ascorbic acid as compared with the effects of other sugar sources including glucose. The ula...

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PMID: 25355938
DOI: 10.1099/mic.0.083899-0

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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