Immunogen sequence: MGCVQCKDKE ATKLTEERDG SLNQSSGYRY GTDPTPQHYP SFGVTSIPNY NNFHAAGGQG LTVFGGVNSS SHTGTLRTRG GTGVTLFVAL YDYEARTEDD. FYN is a SRC-related kinase expressed in brain, skeletal muscle and adipose tissues. Fyn functions in a large number of pat