Glycosylation - the addition of specific short-chain sugars to asparagine, serine, or threonine - is very common in membrane
proteins that form structural components of the
cell surface.
Full article >>>glycosylationA catch-all name for a set of very common and very heterogenous chemical
modifications. Sugar moieties can be attached to the sidechain hydroxyl groups of Ser/Thr or to the sidechain amide groups of Asn.
Full article >>>Glycosylation: The covalent addition of sugar moities to N or O atoms present in the side chains of certain
amino acids of certain
proteins, generally occuring within the
Golgi apparatus during secretion of a
protein.
Full article >>>APP is a sialo
glycoprotein with two potential N-linked
glycosylation sites, one of which may contain a complex oligosaccharide chain.
Full article >>>The major
processing activity is
glycosylation: the adding of sugar
molecules to form
glycoproteins.
In some
cells, e.g.
Full article >>>This re
action (
glycosylation) reduces or destroys the function of many
enzymes. The low rate of
glycosylation is due to
glucose's preference for the less reactive cyclic isomer. Nevertheless, many of the
long-term complications of diabetes (e.g.
Full article >>>The threonine side chain can undergo O-linked
glycosylation.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Threonine".
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Full article >>>Proteins may be modified in a wide
variety of ways, including
phosphorylation (addition or a
phosphate group), adenylation (addition of an
adenine group),
glycosylation (addition of a sugar group), acylation (addition of a
lipid group), ...
Full article >>>Post-
translational
processing: The reactions which alter a
protein's covalent structure, such as
phosphorylation,
glycosylation or proteolytic
cleavage.
Full article >>>These may help the
cell change its surface
glycosylation and thus evade detection by grazers and/or
phages.
Full article >>>Golgi bodies function in the posttranslational
modification (
glycosylation) and secretion of
proteins or
insertion into
membranes. Composed of cis, medial and
trans compartments as well as a less well defined "
trans-golgi network.
Full article >>>'"/>