Abstract:
:The activities of some enzymes belonging to the Leloir pathway, phosphoglucomutase, UDP-glucose pyrophosphorylase, UDP-galactose 4-epimerase and galactose 1-P uridyl transferase, were studied in a wild ropy, a non-ropy and an overproducing mutant ropy strain of Streptococcus thermophilus. These activities were assayed over successive culture transfers along with exocellular polysaccharide (EPS) production. The overproducing mutant ropy strain showed increments in polysaccharide production over successive culture transfers, as opposed to reductions in production by the wild ropy strain. The observed variations among strains in the enzyme activities that were analysed in relation to EPS production suggest their involvement in the synthesis of sugar-nucleotide EPS precursors.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Escalante A,Villegas J,Wacher C,García-Garibay M,Farrés Adoi
10.1111/j.1574-6968.2002.tb11146.xkeywords:
subject
Has Abstractpub_date
2002-04-09 00:00:00pages
289-93issue
2eissn
0378-1097issn
1574-6968pii
S0378109702005621journal_volume
209pub_type
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journal_title:FEMS microbiology letters
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journal_title:FEMS microbiology letters
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journal_title:FEMS microbiology letters
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abstract::Soil isolate Pseudomonas sp. strain AKN5 degrades atrazine as the sole source of nitrogen. The strain showed expeditious growth on medium containing citrate as the carbon source and ammonium chloride as the nitrogen source as compared to citrate plus atrazine or cyanuric acid. Biochemical and nitrogen-source-dependent...
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journal_title:FEMS microbiology letters
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journal_title:FEMS microbiology letters
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journal_title:FEMS microbiology letters
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journal_title:FEMS microbiology letters
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journal_title:FEMS microbiology letters
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journal_title:FEMS microbiology letters
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journal_title:FEMS microbiology letters
pub_type: 杂志文章
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