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Extra resources for Carbohydrate Chemistry–VI. VIth International Symposium on Carbohydrate Chemistry
This suggests that in D-glucose either HO-1 or HO-3 or both act as hydrogen bond donors in the enzyme-substrate complex. Because of the high electronegativity of the CF2 group the acidity of HO-1 and HO-3 in compound (LXXVII) will be enhanced (cf. 9a-fluoro-hydrocortisone (VIII)) and this will promote formation of the enzyme-substrate complex. REFERENCES 1 2 F. Micheel and A. Klemer, Advan. Carbohyd. Chem. 16, 85 Σ (1961). B. Helferich and A. Gnüchtel, Ber. 74, 74, 1035 1035(1941). (1941). J. E.
The latter was obtained by allowing magma from a high purity syrup to crystallize. Since glucose was manufactured chiefly from potato starch, it was sold as potato sugar or potato syrup. In the United States manufacture of syrups and sugars from starch can be traced back to 1830 when a patent was granted to Amable Brozier of 171 ARTHUR G. HOLSTEIN Philadelphia. This patent was for saccharification of maize, rice and other grains. During the early era of the industry, commercial sugars were not pure.
G. Holstein and G. C. Holsing, US Pat. 3 050 444 Aug. 21 (1962). S. S. Cohen, Persp. BioL Med. 6, 215 (1963). 180 BIOSYNTHESIS OF CONNECTIVE TISSUE POLYSACCHARIDES LENNART RODEN Institute of Dental Research, School of Dentistry, and Department of Medicine, University of Alabama in Birmingham, Birmingham, Alabama 35294, USA ABSTRACT The biosynthesis of chondroitin sulphate exemplifies the formation of con nective tissue polysaccharides. Six different glycosyltransferases participate: a chain-initiating xylosyltransferase, two galactosyltransferases, two glucuronosyltransferases, and an iV-acetylgalactosaminyltransferase.