Purine-nucleoside phosphorylase — In enzymology, a purine nucleoside phosphorylase (EC number|2.4.2.1) is an enzyme that catalyzes the chemical reaction:purine nucleoside + phosphate ightleftharpoons purine + alpha D ribose 1 phosphateThus, the two substrates of this enzyme are… … Wikipedia
Purine nucleoside phosphorylase — Not to be confused with polynucleotide phosphorylase. purine nucleoside phosphorylase Identifiers EC number 2.4.2.1 CAS number … Wikipedia
List of EC numbers (EC 2) — This list contains a list of EC numbers for the second group, EC 2, transferases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology.EC 2.1: Transferring One… … Wikipedia
Mannose-1-phosphate guanylyltransferase (GDP) — Identifiers EC number 2.7.7.22 CAS number 9026 31 7 … Wikipedia
metabolism — /meuh tab euh liz euhm/, n. 1. Biol., Physiol. the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available. Cf. anabolism, catabolism … Universalium
Purine metabolism — Many organisms have metabolic pathways to synthesize and break down purines.ynthesisPurines are biologically synthesized as nucleotides (bases attached to ribose 5 phosphate). The committed step is amidophosphoribosyltransferase.Both adenine and… … Wikipedia
List of EC numbers (EC 3) — This list contains a list of EC numbers for the third group, EC 3, hydrolases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology.EC 3.1: Acting on Ester BondsEC… … Wikipedia
Hydrolase — Cristal de lysozyme Les hydrolases constituent une classe d enzymes qui catalysent les réactions d hydrolyse de molécules suivant la réaction générale : R R + H2O ⇌ R OH + R H On y trouve par exemple les estérases, qui hydrolysent les … Wikipédia en Français
Théorie de l'état de transition — Figure 1 : diagramme de réaction pour une réaction de substitution nucléophile bimoléculaire (SN2) entre le bromométhane et l anion hydroxyde La théorie de l état de transition (en anglais transition state theory TST) a pour objectif d… … Wikipédia en Français
Acide ribonucléique — « ARN » redirige ici. Pour les autres significations, voir ARN (homonymie). Structure 3D d un ARN régulateur (riboswitch) … Wikipédia en Français
