Figure 2.
Peroxide inhibits OH of Rabankyrin 5. Summary of the percentage OH quantified at N316, N485 and N649 in Rabankyrin and at N803 in HIF-1α by MS from control and peroxide-treated cells. Error bars for N485 represent standard error (n=4 replicates). Quantitative data were also obtained for N316, N485 and N803 (n=2 replicates) and is included to demonstrate that whenever OH could be accurately quantified it was found to be reduced by peroxide. Specific effects on OH were confirmed by a parallel assessment confirming equal abundance of control peptides −/+peroxide (data not shown). HIF, hypoxia-inducible factor; OH, hydroxylation; T-hydro, tert-butyl hydroperoxide.