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Title of Journal: Antonie van Leeuwenhoek

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Abbravation: Antonie van Leeuwenhoek

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Springer Netherlands

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DOI

10.1016/0049-3848(87)90102-2

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1572-9699

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Control of pyrimidine nucleotide formation in Emp

Authors: Thomas P West
Publish Date: 2010/01/12
Volume: 97, Issue: 3, Pages: 307-311
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Abstract

Control of pyrimidine formation was examined in Pseudomonas fulva ATCC 31418 Pyrimidine supplementation lowered pyrimidine biosynthetic pathway enzyme activities in cells grown on glucose or succinate as a carbon source indicating possible repression of enzyme synthesis Pyrimidine limitation experiments were conducted using an orotidine 5′monophosphate decarboxylase mutant strain isolated in this study Compared to uracilsupplemented glucosegrown mutant cells pyrimidine limitation of this strain caused aspartate transcarbamoylase dihydroorotase dihydroorotate dehydrogenase and orotate phosphoribosyltransferase activities to increase about 6 13 3 15fold respectively which confirmed regulation of enzyme synthesis by pyrimidines At the level of enzyme activity transcarbamoylase activity in Ps fulva was strongly inhibited by pyrophosphate CTP GTP and GDP under saturating substrate concentrations

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  2. Absence of induced resistance in Agaricus bisporus against Lecanicillium fungicola
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  10. Epilithic biofilms in Saint Callixtus Catacombs (Rome) harbour a broad spectrum of Acidobacteria
  11. Aliiglaciecola coringensis sp. nov., isolated from a water sample collected from mangrove forest in Coringa, Andhra Pradesh, India
  12. Streptomyces tunisiensis sp. nov., a novel Streptomyces species with antibacterial activity
  13. Rare or rarely detected? Ceraceosorus guamensis sp. nov.: a second described species of Ceraceosorales and the potential for underdetection of rare lineages with common sampling techniques
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