Uniprot protein corresponding nucleotide sequence - (Aug/26/2012 )

Hello there,
I am trying to find the corresponding gene sequence to the uniprot protein sequences. According the swiss-prot website, there are not corresponding nucleotide sequences to their protein since they have merged multiple isoform sequences together to make their 'canonical' sequences (LINK BELOW). Has anyone find a viable (preferably quick and easy) way around this problem?
Any help would be much appreciated

http://www.uniprot.org/faq/35

You could try to use tblastn, that will find nucleotide sequences using a protein sequence as a query.

http://blast.ncbi.nlm.nih.gov/Blast.cgi?PROGRAM=tblastn&BLAST_PROGRAMS=tblastn&PAGE_TYPE=BlastSearch&SHOW_DEFAULTS=on&LINK_LOC=blasthome