TY - JOUR PY - 2011// TI - Solution structure of a short-chain insecticidal toxin LaIT1 from the venom of scorpion Liocheles australasiae JO - Biochemical and biophysical research communications A1 - Horita, Shoichiro A1 - Matsushita, Nobuto A1 - Kawachi, Tomoyuki A1 - Ayabe, Reed A1 - Miyashita, Masahiro A1 - Miyakawa, Takuya A1 - Nakagawa, Yoshiaki A1 - Nagata, Koji A1 - Miyagawa, Hisashi A1 - Tanokura, Masaru SP - 738 EP - 744 VL - 411 IS - 4 N2 - The solution structure of an insecticidal toxin LaIT1, a 36-residue peptide with a unique amino-acid sequence and two disulfide bonds, isolated from the venom of the scorpion Liocheles australasiae was determined by heteronuclear NMR spectroscopy. Structural similarity search showed that LaIT1 exhibits an inhibitory cystine knot (ICK)-like fold, which usually contains three or more disulfide bonds. Mutational analysis has revealed that two Arg residues of LaIT1, Arg(13) and Arg(15), play significant roles in insecticidal activity.
Language: en
LA - en SN - 0006-291X UR - http://dx.doi.org/10.1016/j.bbrc.2011.07.016 ID - ref1 ER -