Fraction of cell membrane transmembrane proteins N-glycosylated?

[Christer Ericsson]

Is there an estimate of what fraction of animal cell membrane
transmembraneproteins are N-glycosylated? What fraction of glycosylated
membrane proteins are not from the plasma membrane (but from intracellular
membranes)? What fraction of N-glycosylated proteins are not transmembrane
proteins at all? Of these, what fraction are secreted and what fraction
are found in cytosol or nucleus?

-- 
Christer Ericsson, Dept. of Cell and Molecular Biology, Medical Nobel Institute, Karolinska Institute, S-171 77 Stockholm, Sweden.

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