Sequence of this protein is as follows: PFRMFLPSLG HRAPVSQAAK FDPSTKIYEI SNRWKLAQVQ VQKDSKEAVK KKAAEQTAAR EQAKEACKAA AEQAISVRQQ VVLENAAKKR ERATSDPRTT EQKQEKKRLK ISKKPKDPEP PEKEFTPYDY SQSDFKAFAG NSKSKVSSQF DPNKQTPSGK. About 50% of patients with polymyosit