Re: [ccp4bb] offtopic: effect of compound impurities on ITC?

2010-08-26 Thread Savvas Savvides
Hi Francis I guess it depends on how much residual high-affinity binder you have in the mixture and what the difference in affinity is between Y and deriv-Y. Another issue is of course whether Y and derY compete for the same binding site and have the same stoichiometry. A well designed

Re: [ccp4bb] offtopic: effect of compound impurities on ITC?

2010-08-26 Thread Justin Hall
Hi Francis, I might save you some time by telling you up front you should just go back and purify your compound to remove the impurity, you dont even need to read the rest of this, just go. Along the lines of what Savvas was saying, with any equilibrium binding assay between two direct

[ccp4bb] offtopic: effect of compound impurities on ITC?

2010-08-24 Thread Francis E Reyes
Hi All I'm curious the effect of small impurities in commercially synthesized compounds on ITC and its analysis. Say if compound Y is the high affinity binder, but you make a derivative that differs from a single functional group from Y (you used Y to make this new compound) and you

Re: [ccp4bb] offtopic: effect of compound impurities on ITC?

2010-08-24 Thread Ahmed Rohaim
the influence of Y component.  I hope this give the slightest hint!!    Ahmed. --- On Tue, 8/24/10, Francis E Reyes francis.re...@colorado.edu wrote: From: Francis E Reyes francis.re...@colorado.edu Subject: [ccp4bb] offtopic: effect of compound impurities on ITC? To: CCP4BB@JISCMAIL.AC.UK Date: Tuesday