Results 221 to 230 of about 77,707 (283)
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Purine nucleotide catabolism in placenta
American Journal of Obstetrics and Gynecology, 1964Abstract Soluble extracts were utilized to delineate the catabolic pathways of purine 2′,3′- and 5′-ribonucleoside monophosphates in human placenta and to measure the relative activities of the enzymes involved. Derivatives of adenine and hypoxanthine are converted to hypoxanthine, and derivatives of guanine are converted to xanthine.
T T, HAYASHI +3 more
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Purine nucleotide-metal complexes
Inorganica Chimica Acta, 1987Abstract Some results of structural studies on metal- purine nucleotide compounds are presented. The X-ray analysis of a new crystalline form of a copper(II)- inosine monophosphate complex reveals interesting conformational features in the nucleoside moieties. The ‘phosphate only’ binding mode seems to be the preferred one for ternary complexes of Mg(
Renzo Cini, Gianluca Giorgi
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De Novo Purine Nucleotide Biosynthesis
1992This chapter reviews current understanding of de novo purine nucleotide synthesis in Bacillus subtilis,with emphasis on recent developments in understanding gene organization and regulation and on the distinctive structural features of two enzymes of the pathway.
H, Zalkin, J E, Dixon
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Purine Nucleotide Catabolism in Rat Liver
2006The higher specific radioactivity of ALL in comparison to UA, which are observed after administration of labelled precursors, changed when, oxonic acid and allopurinol, inhibitors of UA and ALL formation were administrated. To interpret these results, it is worth while to recall that nucleotide metabolism can be represented as a complex sequence ...
Marinello E. +5 more
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Nucleic Acids, Purines, Pyrimidines (Nucleotide Synthesis)
Annual Review of Biochemistry, 1959period and has been inc luded. The factors involved in nucleotide and nu cleic acid synthesis in vivo have also been discussed. With certain excep tions, extensive discussion has been omitted of topics related to the partici tion of nucleotides in other metabolic processes to be revie wed in this vol ume, such as protein synthesis and carbohydrate ...
S C, HARTMAN, J M, BUCHANAN
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Purine nucleotide biosynthesis in gastrointestinal mucosa
Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1973Abstract Two methods were used to elucidate the relative dependence of intestinal mucosa on the alternative pathways of purine nucleotide biosynthesis. While salvage activity was high, there was no evidence of active de novo purine synthesis by either method, suggesting that intestinal mucosa is dependent on salvage pathway activity for the provision
A M, Mackinnon, D J, Deller
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3 Purine, Purine Nucleoside, and Purine Nucleotide Aminohydrolases
1971Publisher Summary This chapter discusses the chemical significance of adenosine aminohydrolase, 5′-adenylic acid aminohydrolase, adenine nucleoside, nucleotide aminohydrolase, guanine aminohydrolase, and guanosine aminohydrolase. The partially purified adenine aminohydrolase from Azotobacter vinelandii catalyzes the anaerobic conversion of adenine ...
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Alterations in purine nucleotide pyrophosphorylases and resistance to purine analogues
Biochimica et Biophysica Acta, 1961Abstract Resistance to purine analogues in mutants isolated from Salmonella typhimurium , strain LT-2 , resulted in the loss of specific purine nucleotide pyrophosphorylases. Thus, mutants resistant to 2,6-diaminopurine, 6-mercaptopurine, and 8-azaguanine lacked adenylic, inosinic and guanylic pyrophosphorylases, respectively. The mutants resistant
G P, KALLE, J S, GOTS
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