Swift residue‐screening identifies key N‐glycosylated asparagines sufficient for surface expression of neuroglycoprotein Lingo‐1
2009
Advances in genomics and proteomics have generated the needs for the efficient identification of key residues for structure and function of target proteins. Here we report the utilization of a new residue-screening approach, which combines a mammalian high-throughput transient expression system with a PCR-based expression cassette, for the study of the post-translational modification. Applying this approach results in a quick identification of essential N-glycosylation sites of a heavily glycosylated neuroglycoprotein Lingo-1, which are sufficient for the support of its surface expression. These key N-glycosylated sites uniquely locate on the concave surface of the elongated arc-shape structure of the leucine-rich repeat domain. The swift residue-screening approach may provide a new strategy for structural and functional analysis.
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