e.g. CPR34 or chitin*

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View full list of all Ensembl Metazoa species

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New and Updated Drosophilid Assemblies

Ensembl Metazoa now includes the latest assembly for Drosophila melanogaster, BDGP6. FlyBase has full details on what has changed, but two of the main changes are that the old U "pseudo-chromosome" has been removed in favour of multiple scaffolds, and the heterochromatin regions have been incorporated onto the chromosomal arms. FlyBase provide a tool for converting between assembly versions.

This seemed like an apposite time to update the data for the other drosophilid assemblies in Ensembl Metazoa. Drosophila pseudoobscura was overdue an assembly update, to v3.1; the changes were relatively minor. The assemblies for the other drosophilids have not changed recently, but the way we stored the data was not ideal: scaffolds are now split into contigs with meaningful accessions rather than arbitrarily-sized chunks; and the "scaffold_*" notation used by FlyBase is used for scaffold names, rather than INSDC accessions (which are retained as synonyms).

These assembly updates necessitated new whole genome alignments between D. melanogaster and other species. The number of alignments was increased slightly, by including all dipterans in Ensembl Metazoa, rather than just the drosophilids and a subset of mosquitos. And LastZ was used for all species, rather than using tBLAT for the more evolutionarily-distant species (further details on our pairwise alignment strategy). Even in the mosquito alignments, the coverage of the new LastZ alignments is better than the old tBLAT alignments.

What's New in Release 26

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