Corp. ( Lakewood, USA). Ultrapure deionized water (MQ) was generated
using a Q-Gard 2 system (Millipore, Amsterdam, The Netherlands). MS
grade acetonitrile (ACN) was acquired from Biosolve B.V. (Valkenswaard,
The Netherlands). Iodoacetamide (IAA), dithiothreitol (DTT), ethylenediaminetetraacetic
acid (EDTA), analytical grade formic acid (FA), and LC-MS grade water
were obtained from Sigma-Aldrich (Steinheim, Germany). More information
on buffers and reagent can be found in the
neutrophil cell lysate using a mouse anti-CD16 monoclonal IgG2a antibody
(Ref M9087, Clone CLB-FcR gran/1, 5D2, Sanquin, Amsterdam, The Netherlands).
Prior to use, antibodies were labeled with biotin.