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Biochimie. 2001 Aug;83(8):763-73.

Trafficking and localisation of resident Golgi glycosylation enzymes.

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  • 1Department of Pathology and Immunology, Monash University Medical School, Melbourne, Commercial Road, Melbourne, Victoria 3181, Australia.

Abstract

The localisation of glycosylation enzymes within the Golgi apparatus is fundamental to the regulation of glycoprotein and glycolipid biosynthesis. Regions responsible for specifying Golgi localisation have been identified in numerous Golgi resident enzymes. The transmembrane domain of Golgi glycosyltransferases provides a dominant localisation signal and in many cases there are also major contributions from the lumenal domain. The mechanism by which these targeting domains function in maintaining an asymmetric distribution of Golgi resident glycosylation enzymes has been intensely debated in recent years. It is now clear that the targeting of Golgi resident enzymes is intimately associated with the organisation of Golgi membranes and the control of protein and lipid traffic in both anterograde and retrograde directions. Here we discuss the recent advances into how Golgi targeting signals of glycosylation enzymes function, and propose a model for maintaining the steady-state localisation of Golgi glycosyltransferases.

PMID:
11530209
[PubMed - indexed for MEDLINE]

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