ser 50 55 60 sequence description seq id no 54 glu trp gln thr asp asn cys glu thr cys thr cys tyr glu thr glu 1 5 10 15 ile ser cys cys thr leu val ser thr pro val gly tyr asp lys asp 20 25 30 asn cys gln arg ile phe lys lys glu asp cys lys tyr ile val val 35 40 45 glu lys lys asp pro lys lys thr cys ser val ser glu 50 55 60 sequence description seq id no 55 glu trp gln thr asp asn cys glu thr cys thr cys tyr glu thr glu 1 5 10 15 ile ser cys cys thr leu val ser thr pro val gly tyr asp lys asp 20 25 30 asn cys gln arg ile phe lys lys glu asp cys lys tyr ile val val 35 40 45 glu lys lys asp pro lys lys thr cys ser val ser glu trp 50 55 60 sequence description seq id no 56 glu trp gln thr asp asn cys glu thr cys thr cys tyr glu thr glu 1 5 10 15 ile ser cys cys thr leu val ser thr pro val gly tyr asp lys asp 20 25 30 asn cys gln arg ile phe lys lys glu asp cys lys tyr ile val val 35 40 45 glu lys lys asp pro lys lys thr cys ser val ser glu trp ile 50 55 60 sequence description seq id no 57 glu trp gln thr asp asn cys glu thr cys thr cys tyr glu thr glu 1 5 10 15 ile ser cys cys thr leu val ser thr pro val gly tyr asp.