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Arabinogalactan Glycosyltransferases Target to a Unique Subcellular Compartment That May Function in Unconventional Secretion in Plants
Author(s) -
Poulsen Christian Peter,
Dilokpimol Adiphol,
Mouille Grégory,
Burow Meike,
Geshi Naomi
Publication year - 2014
Publication title -
traffic
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.677
H-Index - 130
eISSN - 1600-0854
pISSN - 1398-9219
DOI - 10.1111/tra.12203
Subject(s) - biology , arabidopsis thaliana , endosome , golgi apparatus , arabidopsis , microbiology and biotechnology , galactosyltransferase , subcellular localization , secretory pathway , endomembrane system , brefeldin a , endoplasmic reticulum , biochemistry , mutant , cytoplasm , gene , intracellular , enzyme
Arabinogalactan proteins are abundant O ‐glycosylated proteins in plants and important in many cellular processes. The glycosylation processes have been believed to occur in the secretory pathway through endoplasmic reticulum ( ER ) and Golgi, however, we identified arabinogalactan glycosyltransferases target to yet uncharacterized subcellular compartments as well as Golgi cisternae. Colocalization and pharmacological studies implicate the uncharacterized compartments likely to be a part of the so‐called unconventional protein secretion pathway, thus indicating the presence of multiple routes for glycoprotein secretion in plants.