actually i have downloaded protein sequence from the phytozome as well as refseq(ncbi) for searching a particular domain. now since large number of domain are present in both so i want to know how many are common between them. all though the phytozome and refseq protein share many organism protein i.e. protein found in phytozome may also present in refseq or vice versa. but since their id format are different so i can't match directly.
so please help me out to solve this problem. how i can convert protein id format available in phytozome to refseq or vice versa?