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The Zebrafish new assembly (Zv9) has been out (in Ensembl and UCSC) for a while, yet the miRNA tracks in miRBase has not been updated yet. Does anyone has an idea, when the miRNA annotations in Zv9 be released.
I don’t think miRBase has had a release since Zv9 came out. Each time we build a release we aim to use the most recent assemblies in EnsEMBL and elsewhere, so next time will include coordinates on the Zv9 release. In the meantime, the gff file of coordinates on Zv8 (ftp://mirbase.org/pub/mirbase/16/genomes/dre.gff) can be lifted over to Zv9 at UCSC (http://genome.ucsc.edu/cgi-bin/hgLiftOver).
Hi, could you please check the mmu-mir-378 entry? The website says for the precursor hairpin:
>mmu-mir-378 MI0000795
AGGGCUCCUGACUCCAGGUCCUGUGUGUUACCUCGAAAUAGCACUGGACUUGGAGUCAGAAGGCCU
but your bulk download file hairpin.fa (release 18) sequence is shorter:
>mmu-mir-378 MI0000795 Mus musculus miR-378 stem-loop
AGGGCUCCUGACUCCAGGUCCUGUGUGUUACCUCGAAAUAGCACUGGACUUGGAGUCAGA
which gives problems when aligning to this file because you cannot find mature
>mmu-miR-378-3p MIMAT0003151
ACUGGACUUGGAGUCAGAAGG
And are there perhaps more such cases? Thanks.
PS: mmu-miR-151 is another such case where the hairpin.fa sequence is truncated and so excludes mature mmu-miR-151-3p…
The sequences are all complete in the hairpin.fa file. The shorter sequence you show is just the first line of the hairpin sequence. All entries longer than 60nts span more than one line in that file.
Thank you.