Enzymes, glycosylated

Manganese Unrefined cereals nuts leafy vegetables tea Component of some enzymes glycosyl hansferase, arginase, pyruvate carboxylase... 

Hipkiss, A. R., Michaelis, J., and Syrris, P. (1995a). Non-enzymic glycosylation of the dipeptide L-carnosine, a potential anti-protein-cross-linking agent. FEBS Lett. 371, 81-85. 

M. L. Sinnott, Catalytic mechanisms of enzymic glycosyl transfer, Chem. Rev. 90 1171 (1990). G. W. J. Fleet, Homochiral compounds from sugars, Chem. Br. 25 287 (1989). 

Blakytny, R., and Harding, J.J. 1992. Glycation (non-enzymic glycosylation) inactivates glutathione reductase. Biochem J 288(Pt l) 303-307. 

Sinnott, M.L. Catalitic Mechanisms of Enzymic Glycosyl Transfer. 1990 [95]... 

In chemoenzymatic synthesis, the glycosylamino acids are obtained by enzymic glycosylation and used as building blocks in combinatorial libraries creation [15]. This latter technology requires, first, the solution and implementation of several technical problems to be considered a general method-like chemical approach. Use of enzymatic methods can avoid some regio- and... 

Effects of Enzyme Glycosylation on the Chemical Step of Catalysis, as Probed by Hydrogen Tunneling and Enthalpy of Activation... 

Enzyme Glycosylation Hydrogen lUnneling and Enthalpy of Activation 313... 

Enzyme Glycosylation Hydrogen "Rinneling and Enthalpy of Activation... 

Since enzyme glycosyls, through which the enzymes are associated with lectins are not usually involved in catalytic process [40], the Con A enzyme complexes retain high catalytic activity [110]. Remarkable stability is also exhibited by enzymes complexed with lectins [60] presumably due to the fixation of the enzyme molecules in the native state by several lectin molecules in the complex [103]. The Con A-glycoenzyme complexes however have small particle dimen-... 

STEREOCHEMISTRY AND STEADY-STATE KINETICS OE ENZYMIC GLYCOSYL TRANSFER... 

Isotope effects for AMP nucleosidase demonstrate a very important feature of transition states for enzymic glycosyl transfer, namely that they are plastic, in the sense that their structure can be altered by comparatively minor changes in the protein. ATP is an allosteric activator and the fact that the relative magnitudes of the various effects alter according to allosteric activation mean that transition state structures must be changing (a change in commitments would have affected all effects equally). 

While in the synthesis of naturally occurring oligosaccharides the use of enzymes (glycosyl transferases) proved very useful due to their substrate specificity and stereospecificity and the possibility to work without protective groups, the synthesis of unnatural oligosaccharides still relies on synthetic methods. ... 

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