Abstract: The present invention relates to a hexatoxin peptide variant comprising a. an amino acid sequence which is at least 90% identical to any one of SEQ ID NOs: 27 to 29, wherein the amino acid sequence has at least one amino acid variant on position N27; b. an amino acid sequence which is at least 90% identical to any one of SEQ ID NOs: 2, 6, 7, 30 or 32, wherein the amino acid sequence has at least one amino acid variant on position N28; c. an amino acid sequence which is at least 90% identical to any one of SEQ ID NOs: 1, 3, 4, 5, 8 to 24 or 31, wherein the amino acid sequence has at least one amino acid variant on position N29; d. an amino acid sequence which is at least 90% identical to SEQ ID NO: 25, wherein the amino acid sequence has at least one amino acid variant on position N30; e. an amino acid sequence which is at least 90% identical to SEQ ID NOs: 26, wherein the amino acid sequence has at least one amino acid variant on position N31; or f.

Abstract: The present invention relates to an insecticidal composition comprising: a. at least one cyclic peptide comprising an amino acid sequence of any of: SEQ ID NOs: 1, 2 or 6, or an amino acid sequence that is at least 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98% or 99% identical to any of SEQ ID NOs: 1, 2 or 6; and b. at least one second peptide comprising an amino acid sequence of any of SEQ ID NOs: 3 to 5, or an amino acid sequence that is at least 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98% or 99% identical to any of SEQ ID NOs: 3 to 5, or a variant of a peptide comprising an amino acid sequence of SEQ ID NO: 3, wherein the amino acid sequence has an amino acid variant on position N29, and which retains the biological activity of the peptide.

Abstract: The invention belongs to the field of biochemistry and molecular biology. The present invention provides a mutant of ?-conotoxin peptide TxID, a pharmaceutical composition and use thereof. The TxID mutant is capable of specifically blocking acetylcholine receptors (nAChRs), in particular, ?3?4, or ?6/?3?4 subtype, and has application prospects in the manufacture of a medicament for smoking cessation and detoxification and analgesia, a medicament for treating psychiatric diseases and cancers, regulating appetite, and a tool medicine for neuroscience.

Abstract: The invention relates to relatively short peptides (termed J-Superfamily conotoxin peptides, J-conotoxins or J-conotoxin peptides herein), about 25 residues in length, which are naturally available in minute amounts in the venom of the cone snails or analogous to the naturally available peptides, and which preferably include two disulfide bonds. The J-conotoxins are useful for treating disorders involving voltage gated ion channels and/or receptors.

Abstract: The present invention relates generally to a molecular framework having a cyclic structure. More particularly, the present invention provides cyclic proteins and derivatives thereof in which particular turns and other elements of the molecular structure are held in defined orientations with respect to each other. The cyclic proteins of the present invention provide a molecular framework for the introduction of particular amino acids or heterologous amino acid sequences to facilitate the presentation of biological activities associated with these heterologous amino acid sequences. The molecular framework of the present invention may be naturally cyclic or may be a cyclized derivative of a linear molecular or may be a linear derivative of a cyclized molecule. The present invention contemplates the use of the molecular framework with or without particular amino acids inserted or substituted thereon for the treatment of or prophylaxis of disease conditions in animals, mammals (including humans) and plants.

Abstract: The invention relates to relatively short peptides (termed J-Superfamily conotoxin peptides, J-conotoxins or J-conotoxin peptides herein), about 25 residues in length, which are naturally available in minute amounts in the venom of the cone snails or analogous to the naturally available peptides, and which preferably include two disulfide bonds. The J-conotoxins are useful for treating disorders involving voltage gated ion channels and/or receptors.

Abstract: The invention relates to relatively short peptides (termed Conopeptide-Y family peptides or CPY family peptides or CPY peptides herein), about 30 residues in length, which are naturally available in minute amounts in the venom of the cone snails or analogous to the naturally available peptides, and which are rich in the amino acid tyrosine.