[Bioperl-l] GeneKeyDB -- finding orthologues question

[Olena Morozova]

I have a list of human genes, and I need to find the corresponding
orthologs in the mouse. GKDB looks like a good way to do it, except
that the program's output does not indicate if a particular gene does
not have an ortholog. What I mean is that if I input a list of 50
genes, it will give me a list of 46 orthologs (let's say) in the
mouse, and I have no way of telling which ortholog corresponds to
which gene. Is there any way to get around this problem? For instance,
in the output of the ID converter script, the program leaves blank
spaces where it could not find the corresponding ID..

Alternatively, is there another way to find orthologs? I am still
having troubles with EnsEMBL....
Thank you very much for your help, and I am sorry if my questions are
stupid -- I am a total newbie here...
THanks again,
Olena