biopython/biopython — pull request #91 by asford (2012-11-22 06:59:57+00:00)
Title: Adding Bio.SeqUtils.seq1 for converting between protein alphabets.

Adding Bio.SeqUtils.seq1, an complement to the existing Bio.SeqUtils.seq3, for converting between protein alphabets. Adding IUPAC three-one and one-three letter mapping tables to Bio.SeqUtils.

A basic doctest is inline with the function.