Results 291 to 300 of about 177,246 (350)
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Location of the Guanosine Triphosphate (GTP) Hydrolysis Site in Microtubulesa
Annals of the New York Academy of Sciences, 1986The rate for GTP hydrolysis remains approximately constant during microtubule assembly from microtubular protein. This indicates that GTP hydrolysis does not accompany tubulin-GTP subunit addition to microtubule ends. We suggest that GTP, within tubulin-GTP subunits that are incorporated into microtubules, is hydrolyzed predominantly at one or both ...
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Neonatal hyperphenylalaninemia presumably caused by guanosine triphosphate-cyclohydrolase deficiency
The Journal of Pediatrics, 1985C'est la recherche systematique des pteridines dans les urines qui a permis de suspecter le deficit en GTP-cyclohydrolase, 1ere etape de la synthese de la tetrahydrobiopterine (BH 4 ) chez un bebe hyperphenylalaninemique (HPA). Le deficit en BH 4 , variante rare de l'HPA, differe de la PKU classique par le caractere evolutif de l'atteinte neurologique ...
Marie-Madeleine Roger +6 more
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Light-induced phosphorylation of rod outer segments by guanosine triphosphate
Biochemical and Biophysical Research Communications, 1975Abstract Significant GTP-dependent protein kinase activity is present in isolated photoreceptors of the retina. No transfer of the γ- 32 P group from GTP-γ- 32 P to ATP was detected. Although no stimulation of GTP-kinase activity by cyclic GMP or cyclic AMP was observed, exposure of dark-adapted photoreceptors to light resulted in a 46-fold increase ...
Gopal Krishna +2 more
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Guanosine-5?-triphosphate hydrolysis and tubulin polymerization
Molecular and Cellular Biochemistry, 1982GTP hydrolysis associated with polymerization is a distinctive feature of microtubule assembly. This reaction may be fundamentally linked to the dynamic properties of microtubules in vivo. Kinetic analysis of the connection between microtubule assembly and associated GTP hydrolysis indicates that these two events are kinetically uncoupled, GTP ...
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Enzymatic synthesis of guanosine triphosphate from phytin and guanosine diphosphate
Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1965Birendra B. Biswas, Susweta Biswas
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Regulation of protein synthesis in rabbit reticulocyte lysates by guanosine triphosphate
Biochemical and Biophysical Research Communications, 1982Abstract GTP (2 mM) promotes protein synthesis in rabbit reticulocyte lysates in which protein chain initiation is inhibited by the activation of specific adenosine 3′:5′ cyclic monophosphate independent protein kinases in: 1) heme deficiency; or 2) in hemin-supplemented lysates by the addition of the purified heme-regulated protein kinase (HRI); or ...
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