disuccinimidyl sulfoxide (DSSO; Thermo Scientific, A33545)
2-chloroacetamide (Sigma-Aldrich, C0267)
Lys-C (Wako Chemicals, 129-02541)
Sep-Pak C8 50mg Cartridge (Waters, WAT054965)
EPPS (3-[4-(2-Hydroxyethyl)-1-piperazine]propanesulfonic acid) (Thermo Scientific, J61296AE)
Empore SPE Disks C18 to generate stage tips(Sigma Millipore, 66883-U)
PolyLC PolySulfoethyl A column (3 μm particle size, 2.1 mm inner diameter, and 100 mm length) (#102SE03--)
Lys-C (Wako Chemicals, 129-02541)