Unit

UNIT 12.3 Inhibition of N-Linked Glycosylation

  1. Leland D. Powell

Published Online: 1 MAY 2001

DOI: 10.1002/0471140864.ps1203s00

Current Protocols in Protein Science

Current Protocols in Protein Science

How to Cite

Powell, L. D. 2001. Inhibition of N-Linked Glycosylation. Current Protocols in Protein Science. 00:12.3:12.3.1–12.3.9.

Author Information

  1. University of California, San Diego, La Jolla, California

Publication History

  1. Published Online: 1 MAY 2001
  2. Published Print: JUN 1995

Abstract

This unit describes the use of inhibitors in cultured cells to prevent N-linked glycosylation of proteins to yield glycoproteins containing missing or altered chains. This approach is useful for examining potential functional role(s) of oligosaccharides on specific proteins or intact cells. First, the optimal concentration of inhibitor for the experiment (i.e., highest nontoxic concentration) is determined by monitoring [35S]methionine incorporation as a measure of protein biosynthesis. The inhibitor's ability to inhibit oligosaccharide processing is then determined by analyzing cells labeled with [3H]mannose using TCA precipitation or endo H digestion. A support protocol details a method for concentrating proteins by acetone precipitation.