Files in this Data Supplement:
Fig. S1, oligomerization state of CysK2 in solution
Fig. S2, folding integrity of CysK2 investigated by CD
Fig. S3, effect of pH on the rate of phosphate release in first half reaction of CysK2
Fig. S4, ESI-MS and ESI-MS/MS spectra of S-sulfocysteine and the reaction product of the CysK2 reaction with OPS and thiosulfate as substrate
Table S1, primers
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