Immunogen sequence: SREAAGPILA RDNGIVLGTN GKWVEADPHL RLIREVCRSH VRIAEAATLK PPPFLRGRYR LVRFEDLARE PLAEIRALYA FTGLTLTPQL EAWIHNITHG SGIGKPIEAF HTSSRNARNV SQAWRHALPF TKILRVQEVC AGALQLLGYR PVYSADQQRD LTLDLVLPRG PDHFSWASPD. The protein encoded by this gene is