I have a list of RefSeq accession numbers of mRNA transcripts, all from homo sapiens, and would like to, for each transcript, get the corresponding transcript (and its sequence) from a number of related species like mouse rat cow monkey etc.
I can't imagine that there isn't already a database somewhere for this, but I've spent hours googling and found only ALMOST what I want, like InParanoid, OrthoDB, Ensembl...
Surely many others before me have wished to do something like this? What am I missing?
Thanks in advance and merry weekend!