I've got a list of codding genes and I would like to get the cellular location of the expressed proteins, all at once. I already looked up on uniprot but wasn't able to solve it.
You could use data from the [human protein atlas][1] or [neXtProt][2] for this.

 [1]: http://www.proteinatlas.org/humanproteome
 [2]: http://www.nextprot.org/