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. Author manuscript; available in PMC: 2011 May 31.
Published in final edited form as: Anal Chem. 2010 Jul 15;82(14):6154–6162. doi: 10.1021/ac100956x

Table 1.

Determination of glycosylation occupancy of TNK-tPA at N184 site using either PNGase F treatment for tryptic glycopeptides or in-gel digestion of the resolved glycosylated and non-glycosylated intact proteins.

Product / Method Innovator Follow-on
PNGase F treatment (% occupancy at N184) 60 (±3) % 35 (±2) %
In-Gel Analysis (% occupancy at N184) 50 (±5) % 20 (±3) %

Non-glycosylated and deglycosylated tryptic peptides and sites:

T17 (163–189): YSSEFCSTPACSEGNSDCYFGDGSAYR (deglycosylated)

T17 (163–189): YSSEFCSTPACSEGNSDCYFGNGSAYR (non-glycosylated)

Average of 3 measurements