We are pleased to announce Biopython release 1.50, featuring some significant additions since Biopython 1.49 was released late last year. GenomeDiagram by Leighton Pritchard has been integrated into Biopython as the Bio.Graphics.GenomeDiagram module. A new module Bio.Motif has been added, which is intended to replace the existing Bio.AlignAce and Bio.MEME modules. Also have a look at Bio.SwissProt and Bio.ExPASy and their revised parsers.