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Pyrimidine base and nucleoside metabolism in Pseudomonas cepacia
Author(s) -
West Thomas P.,
Chu ChienPeng
Publication year - 1987
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.3620270514
Subject(s) - cytosine , cytidine , cytosine deaminase , pyrimidine , nucleoside , biochemistry , hydrolase , chemistry , cytidine deaminase , pseudomonas , biology , enzyme , bacteria , dna , genetics , gene , genetic enhancement
Pyrimidine base and nucleoside metabolismin Pseudomonas cepacia was investigated. It was found that this pseudominad utilized uracila, cytosine or cytidine as a sole nitrogen source while prymidine bases and nucelosides supported little bacterial growth as sole carbon sources. Low nuceloside hydrolase and cytosine deminase activitiers were detected in P. cepacia. Synthesis of both enzymes appeared to be subject to repression by ammonium ions but repression of cytosine deaminase synthesis was more severe. Synthesis of nuceloside hydrolase or cytosine deminase was induced if the cells were grown on the substrate cytidine or cytosine, respectively, as a sole nitrogen source.