Белок, выделен из растения Abrus precatorius (сем. Бобовых).
Первичная структура:
001 QDQVIKFTTE GATSQSYKQF IEALRQRLTG GLIHGIPVLP DPTTLQERNR YISVELSNSD
061 TESIEAGIDV SNAYVVAYRA GNRSYFLRDA PTSASRYLFT GTQQYSLRFN GSYIDLERLA
121 RQTRQQIPLG LQALRHAISF LQSGTDDQEI ARTLIVIIQM ASEAARYRFI SYRVGVSIRT
181 NTAFQPDAAM ISLENNWDNL SGGVQQSVQD TFPNAVTLRS VNNQPVIVDS LTHQSVAVLA
241 LMLFVCNPPN ANQSPLLIRS IVEKSKICSS RYEPTVRIGG RNGMCVDVYD DGYHNGNRII
301 AWKCKDRLEE NQLWTLKSDK TIRSNGKCLT TEGYAPGNYV MIYDCTSAVA EATYWEIWDN
361 GTIINPKSAL VLSAESSSMG GTLTVQTNEY LMRQGWRTGN NTSPFVTSIS GYSDLCMQAQ
421 GSNVWLAYCD NNKKEQQWAL YTDGSIRSVQ NTNNCLTSKD HKQGSPIVLM ACSNGWASQR
481 WLFRNDGSIY NLHDDMVMDV KRSDPSLKEI ILHPYHGKPN QIWLTLF