Results 251 to 260 of about 3,652,527 (299)
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Nitrogen Regulation in Saccharomyces cerevisiae
Gene, 2002Yeast cells can respond to growth on relatively poor nitrogen sources by increasing expression of the enzymes for the synthesis of glutamate and glutamine and by increasing the activities of permeases responsible for the uptake of amino acids for use as a source of nitrogen. These general responses to the quality of nitrogen source in the growth medium
Chris A Kaiser, Boris Magasanik
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Antonie van Leeuwenhoek, 1994
Nitrogen regulation has been extensively studied in fungi revealing a complex array of interacting regulatory genes. The general characterisation of the systems in Aspergillus nidulans and Neurospora crassa shall be briefly described, but much of this paper will concentrate specifically on the recent molecular characterisation of areA, the principle ...
M X, Caddick, D, Peters, A, Platt
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Nitrogen regulation has been extensively studied in fungi revealing a complex array of interacting regulatory genes. The general characterisation of the systems in Aspergillus nidulans and Neurospora crassa shall be briefly described, but much of this paper will concentrate specifically on the recent molecular characterisation of areA, the principle ...
M X, Caddick, D, Peters, A, Platt
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Nitrogen Regulation in Bacteria and Archaea
Annual Review of Microbiology, 2007A wide range of Bacteria and Archaea sense cellular 2-oxoglutarate (2OG) as an indicator of nitrogen limitation. 2OG sensor proteins are varied, but most of those studied belong to the PII superfamily. Within the PII superfamily, GlnB and GlnK represent a widespread family of homotrimeric proteins (GlnB-K) that bind and respond to 2OG and ATP. In some
John A, Leigh, Jeremy A, Dodsworth
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REGULATION OF NITROGEN FIXATION GENES
Annual Review of Genetics, 1986INTRODUCTION AND O VERVIEW . . . . . . . . . .. . . . . . . .. . . . .. .. . . . . . 567 MECHAN ISM OF nif REGUL ATION 569 NifA and NtrC Require NtrA for Promoter Activation 569 NifA and NtrC are Structurally and Functionally Related 570 nif and ntr Promoters Have a Characteristic Primary Structure ....... 570 Role of NtrA in nif and ntr Gene
G N, Gussin, C W, Ronson, F M, Ausubel
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Microbiology and Molecular Biology Reviews, 2018 SUMMARY Nitrogen is one of the most important essential nutrient sources for biogenic activities. Regulation of nitrogen metabolism in microorganisms is complicated and elaborate.
Guocheng Du, Jingwen Zhou
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Genetics and Regulation of Nitrogen Fixation
Annual Review of Microbiology, 1981The genetics and regulation of N2 fixation has only recently begun to be understood. Breakthroughs from a variety of laboratories have yielded both techniques and ideas that will be useful for understanding genetic and regulatory mechanisms of microbial N2 fixation.
G P, Roberts, W J, Brill
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Genetic Regulation of Biological Nitrogen Fixation
Nature Reviews Microbiology, 2004Some bacteria have the remarkable capacity to fix atmospheric nitrogen to ammonia under ambient conditions, a reaction only mimicked on an industrial scale by a chemical process that requires high temperatures, elevated pressure and special catalysts. The ability of microorganisms to use nitrogen gas as the sole nitrogen source and engage in symbioses ...
Daniel Kahn, Raymond Dixon
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Dissolved Organic Nitrogen Regulation in Freshwaters
Journal of Environmental Quality, 2004ABSTRACTDissolved organic nitrogen (DON) has been hypothesized to play a major role in N cycling in a variety of ecosystems. Our aim was to assess the seasonal and concentration relationships between dissolved organic carbon (DOC), DON, and NO−3 within 102 streams and 16 lakes within catchments of differing complexity situated in Wales.
V B, Willett +4 more
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Regulation of the Assimilation of Nitrogen Compounds
Annual Review of Biochemistry, 1978FORMATION OF GLUTAMATE AND GLUTAMINE FROM AMMONIA .... 1131 The Role oj Glutamate Dehydrogenase (GDH) 1131 Biochemistry oj GDH 1131 Physiology oj GDH production ....... .... 1131 Genetics oj GDH jormation .. 1131 The Role o/Glutamate Synthase (GOGAT) 1132 Biochemistry oj GaGA T 1132 Physiology of GOGAT production 1133 Genetics ...
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Regulation of Nitrogen Metabolism in Rhizobium
1990Bacteria of the genus Rhizobium infect roots of leguminous plants and induce the development of root nodules. The nodules are specialized structures in which some cells contain a large number of Rhizobium bacteria. These, called bacteroids, are modified in their morphology and physiology as compared to the free-living forms and their multiplication is ...
Iaccarino M +7 more
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