Equivalent amino acids for similarity searches

[POSTMASTER at NBRF.GEORGETOWN.EDU]

In reply to message <2mmfdp$t1n at usenet.INS.CWRU.Edu> from Roberto Albinoni
(dy684 at cleveland.Freenet.Edu) and the follow-ups concerning measures of
functional similarity for amino acid residues in protein, the best reference
for the original Dayhoff accepted point mutation (PAM) matrix would be

@inbook{PAM,
  author = "M. O. Dayhoff and R. V. Eck and C. M. Park",
  title = "A Model of Evolutionary Change in Proteins",
  pages = "89-99",
  editor = "Margaret O. Dayhoff",
  title = "Atlas of {P}rotein {S}equence and {S}tructure",
  volume = "5",
  year = 1972,
  publisher = "National Biomedical Research Foundation",
  address = "Washington, DC"}
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                                 Dr. John S. Garavelli
                                 Database Coordinator
                                 Protein Information Resource
                                 National Biomedical Research Foundation
                                 Washington, DC  20007
                                 POSTMAST at GUNBRF.BITNET
                                 POSTMASTER at NBRF.GEORGETOWN.EDU