(A-1 chain)
SNLDEDIIAE ENIVSRSEFP ESWLWNVEDL KEPPKNGIST KLMNIFLKDS ITTWEILAVS
MSDKKGICVA DPFEVTVMQD FFIDLRLPYS VVRNEQVEIR AVLYNYRQNQ ELKVRVELLH
NPAFCSLATT KRRHQQTVTI PPKSSLSVPY VIVPLKTGLQ EVEVKAAVYH HFISDGVRKS
LKVVPEGIRM NKTVAVRTLD PERLGR
(A-2 chain)
SEETKENEGF TVTAEGKGQG TLSVVTMYHA KAKDQLTCNK FDLKVTIKPA PETEKRPQDA
KNTMILEICT RYRGDQDATM SILDISMMTG FAPDTDDLKQ LANGVDRYIS KYELDKAFSD
RNTLIIYLDK VSHSEDDCLA FKVHQYFNVE LIQPGAVKVY AYYNLEESCT RFYHPEKEDG
KLNKLCRDEL CRCAEENCFI QKSDDKVTLE ERLDKACEPG VDYVYKTRLV KVQLSNDFDE
YIMAIEQTIK SGSDEVQVGQ QRTFISPIKC REALKLEEKK HYLMWGLSSD FWGEKPNLSY
IIGKDTWVEH WPEEDECQDE ENQKQCQDLG AFTESMVVFG CPN
(B chain)
SPMYSIITPN ILRLESEETM VLEAHDAQGD VPVTVTVHDF PGKKLVLSSE KTVLTPATNH
MGNVTFTIPA NREFKSEKGR NKFVTVQATF GTQVVEKVVL VSLQSGYLFI QTDKTIYTPG
STVLYRIFTV NHKLLPVGRT VMVNIENPEG IPVKQDSLSS QNQLGVLPLS WDIPELVNMG
QWKIRAYYEN SPQQVFSTEF EVKEYVLPSF EVIVEPTEKF YYIYNEKGLE VTITARFLYG
KKVEGTAFVI FGIQDGEQRI SLPESLKRIP IEDGSGEVVL SRKVLLDGVQ NPRAEDLVGK
SLYVSATVIL HSGSDMVQAE RSGIPIVTSP YQIHFTKTPK YFKPGMPFDL MVFVTNPDGS
PAYRVPVAVQ GEDTVQSLTQ GDGVAKLSIN THPSQKPLSI TVRTKKQELS EAEQATRTMQ
ALPYSTVGNS NNYLHLSVLR TELRPGETLN VNFLLRMDRA HEAKIRYYTY LIMNKGRLLK
AGRQVREPGQ DLVVLPLSIT TDFIPSFRLV AYYTLIGASG QREVVADSVW VDVKDSCVGS
LVVKSGQSED RQPVPGQQMT LKIEGDHGAR VVLVAVDKGV FVLNKKNKLT QSKIWDVVEK
ADIGCTPGSG KDYAGVFSDA GLTFTSSSGQ QTAQRAELQC PQPAA
(Disulfide bridge: A-1 125-A-2 193; A-1 68-B537)