Figure 5.
Effect of incubation time on S-nitrosothiol reduction in whole fixed cells. Cellular S-nitrosylation was induced by incubation of COS 7 cells with 200 μM CSNO for 15 minutes. Cells were fixed with methanol and blocked with NEM. 2 mM PE SO3 was added for the time indicated to reduce S-nitrosothiols and reduced thiols labeled with Alexa Fluor 488 C5 maleimide.