How to define the domans in protein sequence - (Jan/28/2009 )

How can I define the domains in my protein sequence. I blast search but i did not find as much infromation as I was expecting.
I shall be very thankful to you for your kind reply.
best regards

there are a number of search tools for domains grouped at ExPASy (http://www.expasy.ch/tools/) - Pattern and profile searches

Hello

CDD:
http://www.ncbi.nlm.nih.gov/Structure/cdd/cdd.shtml

If its a NRPS or PKS, try this:

http://www.nii.res.in/nrps-pks.html

Best
TC

Try ELM database search. It gives the domains and potential binding partners.