Results 101 to 110 of about 1,579 (116)
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Analytical Biochemistry, 1974
Abstract A means of preparative enzymatic synthesis of guanosine tetraphosphate (ppGpp), guanosine pentaphosphate (pppGpp), and related derivatives is deseribed. The Escherichia coli ribosomes can be recovered, stored, and used repeatedly as a source of synthetic activity.
Michael Cashel
exaly +3 more sources
Abstract A means of preparative enzymatic synthesis of guanosine tetraphosphate (ppGpp), guanosine pentaphosphate (pppGpp), and related derivatives is deseribed. The Escherichia coli ribosomes can be recovered, stored, and used repeatedly as a source of synthetic activity.
Michael Cashel
exaly +3 more sources
Guanosine tetra- and pentaphosphate analysis
Microchemical Journal, 1975Abstract A system is presented that can separate and quantitate in picomole amounts various guanosine tetra and penta phosphates namely guanosine 5′ triphosphate, 3′ diphosphate (pppGpp), guanosine 5′ tetraphosphate (ppppG), and diguanosine 5′ tetraphosphate (GppppG).
Knox Van Dyke
exaly +2 more sources
Archives of Microbiology, 1981
The intracellular levels of ppGpp and pppApp in various microorganisms were determined by radioimmunoassay, with was of more accuracy and convenience than previous 32P-labeling method. ppGpp was detected in bacteria, actinomycetes, yeasts and fungi. pppApp was found in non-spore forming bacteria such as the genera Pseudomonas and Escherichia, fungi and
Yasutaro Hamagishi +2 more
exaly +2 more sources
The intracellular levels of ppGpp and pppApp in various microorganisms were determined by radioimmunoassay, with was of more accuracy and convenience than previous 32P-labeling method. ppGpp was detected in bacteria, actinomycetes, yeasts and fungi. pppApp was found in non-spore forming bacteria such as the genera Pseudomonas and Escherichia, fungi and
Yasutaro Hamagishi +2 more
exaly +2 more sources
Guanosine tetra- and pentaphosphate synthesis by bacterial stringent factor and eukaryotic ribosomes
Nature, 1977AMINO acid starvation of rel+ bacteria1 results in a rapid pleiotropic response involving the cessation of stable RNA synthesis, a decrease in the rate of nucleoside transport, an altered pattern of mRNA synthesis, inhibition of phospholipid synthesis and increased protein turnover.
J W, Pollard, J, Parker
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Analytical Biochemistry, 1988
Commercial samples of GTP and guanosine 5'-tetraphosphate were analyzed, with or without previous treatment with alkaline phosphatase, by high-pressure liquid chromatography on a Hypersil ODS column. They showed the presence of diguanosine 5',5"'-Pl,Pn-tri, tetra-, and pentaphosphates in varying amounts depending on the sample, but usually in ...
F, Buitrago, J, Canales, A, Sillero
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Commercial samples of GTP and guanosine 5'-tetraphosphate were analyzed, with or without previous treatment with alkaline phosphatase, by high-pressure liquid chromatography on a Hypersil ODS column. They showed the presence of diguanosine 5',5"'-Pl,Pn-tri, tetra-, and pentaphosphates in varying amounts depending on the sample, but usually in ...
F, Buitrago, J, Canales, A, Sillero
openaire +2 more sources
Biochemistry, 2004
Exopolyphosphatase/guanosine pentaphosphate phosphohydrolase (PPX/GPPA) enzymes play central roles in the bacterial stringent response induced by starvation. The high-resolution crystal structure of the putative Aquifex aeolicus PPX/GPPA phosphatase from the actin-like ATPase domain superfamily has been determined, providing the first insights to ...
Kristensen, Ole +4 more
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Exopolyphosphatase/guanosine pentaphosphate phosphohydrolase (PPX/GPPA) enzymes play central roles in the bacterial stringent response induced by starvation. The high-resolution crystal structure of the putative Aquifex aeolicus PPX/GPPA phosphatase from the actin-like ATPase domain superfamily has been determined, providing the first insights to ...
Kristensen, Ole +4 more
openaire +3 more sources
Biochemical and Biophysical Research Communications, 1974
Abstract Salt-washed ribosomes from Escherichia coli , plus stringent protein, form more ppGpp than pppGpp from GTP at all times, but unwashed ribosomes are shown to synthesize primarily pppGpp as the initial product.
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Abstract Salt-washed ribosomes from Escherichia coli , plus stringent protein, form more ppGpp than pppGpp from GTP at all times, but unwashed ribosomes are shown to synthesize primarily pppGpp as the initial product.
openaire +2 more sources