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In enzymology, an alpha,alpha-trehalose-phosphate synthase (UDP-forming) (EC 2.4.1.15) is an enzyme that catalyzes the chemical reaction. UDP-glucose + D-glucose 6-phosphate UDP + alpha,alpha-trehalose 6-phosphate
The enzyme trehalose-phosphatase (EC 3.1.3.12) catalyzes the reaction . α,α-trehalose 6-phosphate + H 2 O α,α-trehalose + phosphate. This enzyme belongs to the family of hydrolases, specifically those acting on phosphoric monoester bonds.
Paul Charles Zamecnik (November 22, 1912 – October 27, 2009) was an American scientist who played a central role in the early history of molecular biology.He was a professor of medicine at Harvard Medical School and a senior scientist at Massachusetts General Hospital.
J. Biol. Chem. 231 (2): 1009–29. doi: 10.1016/S0021-9258(18)70463-8. PMID 13539033. Schramm M, Klybas V, Racker E (1958). "Phospholytic cleavage of fructose-6-phosphate by fructose-6-phosphate phosphoketolase from Acetobacter xylinum". J. Biol. Chem. 233 (6): 1283–1288. doi: 10.1016/S0021-9258(18)49327-1. PMID 13610828
However, the 231 Pa (with a half-life of 3.27 × 10 4 years) formed via (n,2n) reactions with 232 Th (yielding 231 Th that decays to 231 Pa), while not a transuranic waste, is a major contributor to the long-term radiotoxicity of spent nuclear fuel. While 231 Pa can in principle be converted back to 232
L-Ribulose 5-phosphate 4-epimerase catalyzes the epimerization of L-ribulose 5-phosphate to D-xylulose 5-phosphate by retro-aldol cleavage and subsequent aldol reaction.The proposed mechanism involves the abstraction of the proton from the hydroxyl group on C-4, followed by cleavage of the bond between C-3 and C-4 to give a metal-stabilized acetone enediolate and a glycolaldehyde phosphate ...
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Industries which employ chem techs include chemical, petrochemical, and pharmaceutical industries. Companies within these industries can be concerned with manufacturing , research and development (R&D), consulting , quality control , and a variety of other areas.