Dear Robert, what type of analysis do you want to perform with this protein? Is it experimental?

Also, what species are you interested in?

There are some tricks that you could use to find homologs. Please provide a little more information.

Regards,

please provide details as to what are you interested in. there is a class of tool n tricks that can b used to find homologs. 

Hello Marcos and Sinha, I actually want to screen the receptor with different ligands (to determine agonists and antagonists). So, I did a BLAST on Uniprot to see if I could get any homologs that are curated already as this couls be helpful in determining which ligands to choose but most of the homologs are listed a "putative" with no annotation.

Hi Robert. 

Try searching here: http://gpcrdb.org/alignment/blastsearch

This will only query known GPCRs. 

Best

Dan