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. Author manuscript; available in PMC: 2009 Dec 18.
Published in final edited form as: Anal Chem. 2007 Jan 24;79(5):2158–2162. doi: 10.1021/ac0620819

Table 1.

Summary Of Experimental Conditions for 18O Labelling Experiments

Sample 1 2 3 4
Proteolytic Digest Soluble Trypsin Soluble Trypsin Soluble Trypsin Immobilized Trypsin
18O Labelling Immobilized Trypsin Immobilized Trypsin Immobilized Trypsin Immobilized Trypsin
Inactivation None 1 mM PMSF 1 mM PMSF, Ultrafiltration 1 mM PMSF, Ultrafiltration