*Dear Saif*

*Hope you are doing well and safe!*

1) How much change in Tm (ΔTm) in a thermal shift assay is considered to be
significant ?

*As it has already been mentioned there is no specific cutoff  for deltaTm
to be considered significant. DeltaTm depends on many factors, including
the type of dye you use, protein structure and where your compound binds*.

2) A negative  ΔTm infers that the compound is making the protein unstable.
In such a case, will the co-crystallization be difficult or just impossible
or on the contrary it shouldn't matter much?


*A negative detaTm means the compound is binding to a different
conformational state of the protein, compared to the native one. I would
not consider co-crystallization more difficult or impossible in the
presence of those compounds, but I would definitely screen for different
crystallization conditions.*

*Good luck*

*Cristy*
*#womeninscience*


Em qui., 25 de fev. de 2021 às 11:56, Saif Mohd <[email protected]>
escreveu:

> Hello everyone,
>
> 1) How much change in Tm (ΔTm) in a thermal shift assay is considered to
> be significant ?
>
> 2) A negative  ΔTm infers that the compound is making the protein
> unstable. In such a case, will the co-crystallization be difficult or just
> impossible or on the contrary it shouldn't matter much?
>
>
> Thanks and best regards,
> Saif
>
>
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