AIMTo analyze YZ-2, a novel protein associated with cerebral ischemia and prepares its polyclonal antibody.METHODSAccording to the bioinformatics analysis and prediction of the possible high structure, hydrophilicity and antigenicity of YZ-2, a 22-amino acid residue partial peptide of YZ-2 was synthesized. The synthesized peptide was then used to immunize. And the properties of anti-YZ2 were analyzed by ELISA and Western blot.RESULTSThe hydrophilicity and antigenicity were predicted by methods of bioinformatics. The polyclonal antibody of YZ-2 was successfully obtained and its specificity and sensitivity were conformed by ELISA and Western blot.CONCLUSIONBy the bioinformatics analysis and prediction, the hydrophilicity and antigenicity of YZ2 were analyzed. The antibody of YZ-2 was successfully obtained.