Results 151 to 160 of about 7,026 (202)
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Analytical Biochemistry, 2013
Isopentenyl diphosphate (IDP) and its isomer dimethylallyl diphosphate (DMADP) are building units for all isoprenoids; thus, intracellular pool sizes of IDP and DMADP play important roles in living organisms. Several methods have been used to quantify the amount of DMADP or the combined amount of IDP plus DMADP, but measuring the DMADP/IDP ratio has ...
Changfang, Zhou +4 more
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Isopentenyl diphosphate (IDP) and its isomer dimethylallyl diphosphate (DMADP) are building units for all isoprenoids; thus, intracellular pool sizes of IDP and DMADP play important roles in living organisms. Several methods have been used to quantify the amount of DMADP or the combined amount of IDP plus DMADP, but measuring the DMADP/IDP ratio has ...
Changfang, Zhou +4 more
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ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Nezha, Dridi +3 more
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AbstractFor Abstract see ChemInform Abstract in Full Text.
Nezha, Dridi +3 more
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Journal of Alloys and Compounds, 2010 Two new complex diphosphates Rb2M(H2P2O7)2·2H2O [M = Zn (I), Mg (II)], have been synthesized using wet chemistry. Their crystals have been isolated and characterized by X-ray diffraction, FTIR and micro-Raman techniques. Both compounds crystallize in the
Rachid Essehli +2 more
exaly +2 more sources
The Journal of Biochemistry, 1980
A radioimmunoassay for guanosine-5'-diphosphate-3'-diphosphate (ppGpp) and adenosine-5'-triphosphate-3'-diphosphate (pppApp) has been developed. The assay method is based on competition of an unlabeled highly phosphorylated nucleotide with 3H-labeled highly phosphorylated nucleotide for binding sites on a specific antibody.
Y, Hamagishi, T, Oki, H, Tone, T, Inui
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A radioimmunoassay for guanosine-5'-diphosphate-3'-diphosphate (ppGpp) and adenosine-5'-triphosphate-3'-diphosphate (pppApp) has been developed. The assay method is based on competition of an unlabeled highly phosphorylated nucleotide with 3H-labeled highly phosphorylated nucleotide for binding sites on a specific antibody.
Y, Hamagishi, T, Oki, H, Tone, T, Inui
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The pyrophosphorylysis of adenosine diphosphate glucose and adenosine diphosphate mannose
Biochimica et Biophysica Acta (BBA) - Specialized Section on Enzymological Subjects, 1964Abstract 1. 1. The biosynthesis of adenosine diphosphate glucose and adenosine diphosphate mannose from adenosine triphosphate and respectively glucose 1-phosphate and mannose 1-phosphate has been observed in extracts from mammalian tissues. The reaction is reversible in the presence of the nucleoside diphosphate sugar and pyrophosphate. 2. 2.
H, VERACHTERT, S T, BASS, R G, HANSEN
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Isoprenyl diphosphate synthases
Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids, 2000Isoprenyl diphosphate synthases catalyze consecutive condensations of isopentenyl diphosphates with allylic primer substrates to form linear backbones for all isoprenoid compounds including cholesterol. These synthases are classified according to the final chain length of their end products and the stereochemistry of the newly formed double bonds ...
K C, Wang, S, Ohnuma
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Inhibition of ribulose diphosphate carboxylase/oxygenase by xylitol 1,5-diphosphate
Biochemical and Biophysical Research Communications, 1975Summary Xylitol 1,5-diphosphate is a potent inhibitor of RuDP carboxylase/oxygenase activity. At an enzyme concentration of 400 μg/ml (less than 1 μM), RuDP carboxylase is inhibited 50% by 2 μM xylitol 1,5-diphosphate. The molar ratio of effector to enzyme is 2 to 1. The inhibition with respect to RuDP is mixed uncompetitive and noncompetitive.
F J, Ryan, R, Barker, N E, Tolbert
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Inhibition of thiamin diphosphate dependent enzymes by 3-deazathiamin diphosphate
Organic & Biomolecular Chemistry, 20043-Deazathiamin diphosphate (deazaTPP) and a second thiamin diphosphate (TPP) analogue having a benzene ring in place of the thiazolium ring have been synthesised. These compounds are both extremely potent inhibitors of pyruvate decarboxylase from Zymomonas mobilis; binding is competitive with TPP and is essentially irreversible even though no covalent ...
Stéphane, Mann +3 more
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Polyprenyl Diphosphate Synthases
1997It is noteworthy that in spite of the similarity of the reactions catalyzed by these prenyltransferases, the modes of expression of catalytic function are surprisingly different, varying according to the chain length and stereochemistry of reaction products. These enzymes are summarized and classified into four groups, as shown in Figure 13.
K, Ogura, T, Koyama, H, Sagami
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1963
Publisher Summary This chapter describes the isolation of uridine diphosphate glucose, uridine diphosphate acetylglucosamine, and guanosine diphosphate mannose. The basic principle is that alcoholic extract from toluene-autolyzed yeast is fractionated on anion-exchange columns.
Luis F. Leloir, Enrico Cabib
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Publisher Summary This chapter describes the isolation of uridine diphosphate glucose, uridine diphosphate acetylglucosamine, and guanosine diphosphate mannose. The basic principle is that alcoholic extract from toluene-autolyzed yeast is fractionated on anion-exchange columns.
Luis F. Leloir, Enrico Cabib
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