A monoclonal antibody for the detection of Discosoma sp. red fluorescent protein (DsRed). This antibody recognizes denatured forms of wild-type DsRed and its variants, including DsRed1, DsRed2, and DsRed1-E5 (the Fluorescent Timer). The antibody binds DsRed1 and DsRed2 even when these proteins are expressed as fusions to other proteins. Both N- and C-terminal fusions are recognized. The Living Colors DsRed Monoclonal Antibody is recommended for Western blotting applications only.