Good pointer, but I need some a little more sophisticated than Tm. Tm is probably sufficient for short probes, but I am looking for something more general that I can apply for gene-to-gene interactions. This would include things like base stacking, take into account hairpin loops in the gene match, etc. -Patrick Titus Brown <titus at caltech.edu>@bioinformatics.org on 10/06/2003 04:44:08 PM Please respond to biodevelopers at bioinformatics.org Sent by: biodevelopers-admin at bioinformatics.org To: biodevelopers at bioinformatics.org cc: Subject: Re: [Biodevelopers] binding energy calculation -> Does anyone know of a tool to calculate the binding affinity between -> between a short mRNA probe and a gene? I am familiar with mfold and the -> vienna rna package, which perform similar calculations (correct me if I am -> wrong here), but they calculate energies for self-binding. Google for 'melting temperature' or 'annealing' instead. The first hit is this: http://www.retrogen.com/index/melting_template.htm cheers, --titus _______________________________________________ Biodevelopers mailing list Biodevelopers at bioinformatics.org https://bioinformatics.org/mailman/listinfo/biodevelopers