We are pleased to announce the release of Biopython 1.43. This release includes a brand-new set of parsers in Bio.SeqIO by Peter Cock for reading biological sequence files in various formats, an updated Blast XML parser in Bio.Blast.NCBIXML, a new UniGene flat-file parser by Sean Davis, and numerous improvements and bug fixes in Bio.PDB, Bio.SwissProt, Bio.Nexus, BioSQL, and others. Believe it or not, even the documentation was updated.