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The lectin ERGIC-53 is a cargo transport receptor for glycoproteins

Appenzeller, C. and Andersson, H. and Kappeler, F. and Hauri, H. P.. (1999) The lectin ERGIC-53 is a cargo transport receptor for glycoproteins. Nature Cell Biology, Vol. 1, H. 6. pp. 330-334.

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Official URL: http://edoc.unibas.ch/dok/A5257769

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Abstract

Soluble secretory proteins are transported from the endoplasmic reticulum (ER) to the ER-Golgi intermediate compartment (ERGIC) in vesicles coated with COP-II coat proteins. The sorting of secretory cargo into these vesicles is thought to involve transmembrane cargo-receptor proteins. Here we show that a cathepsin-Z-related glycoprotein binds to the recycling, mannose-specific membrane lectin ERGIC-53. Binding occurs in the ER, is carbohydrate- and calcium-ion-dependent and is affected by untrimmed glucose residues. Binding does not, however, require oligomerization of ERGIC-53, although oligomerization is required for exit of ERGIC-53 from the ER. Dissociation of ERGIC-53 occurs in the ERGIC and is delayed if ERGIC-53 is mislocalized to the ER. These results strongly indicate that ERGIC-53 may function as a receptor facilitating ER-to-ERGIC transport of soluble glycoprotein cargo.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Former Organization Units Biozentrum > Pharmacology/Neurobiology (Hauri)
UniBasel Contributors:Hauri, Hans-Peter
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:MacMillan
ISSN:1465-7392
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:25 Mar 2014 13:05
Deposited On:22 Mar 2012 14:13

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