about ATPS

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    • #8502
      houlinlin
      Participant

      I am confused by the differences of ATP and ATPS appeared in an article.would anyone show me what are the differences between them ?
      Thanks very much! 🙂

    • #77448
      Katy_Bobbles
      Participant

      I assume the ATP S is ATP synthase, the enzyme which catalyses the addition of a phosphate group to ADP to make ATP

      Hope that makes sense and it is what the S stood for 🙂

    • #77454
      blcr11
      Participant

      …or ATP-[gamma]-S? There was that little box which usually means some sort of non-displayable character in the font set. Anyway, ATP-gamma-S is an ATP analogue in which the gamma-phosphate atom is replaced by a sulfur atom, if that’s what you were wondering. The compound binds like ATP, but doesn’t react like ATP.

    • #77477
      houlinlin
      Participant

      Thanks for your replys.I am sure I have got the answer.

    • #77789
      pluto
      Participant

      to clarify on the post about ATP[gamma]S. When the gamma-P is replaced with an S, then that bond can no longer be cleaved (i.e. ATP->ADP). Thus, people use the "non hydrolyzable" form of nucleotides to study enzyme activity when you don’t have to worry about substrate depletion

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