Dayhoff matrix for protein comparisons??

[Sarah Dorazio]

I have been using the GCG Gap and Bestfit programs to make
amino acid sequence comparisons between related proteins.  I
recently learned that implementing something called
the"Dayhoff matrix" would be better for this purpose.

Does anyone know how to use this matrix and where I can find
it?  I would appreciate e-mail responses since I do not read
this newsgroup often.

Thank You!
Sarah D'Orazio     (sdorazio at miasun.med.miami.edu)