Abstract: The invention relates to peptides with the following general formula: A-Thr-Lys-Pro-B-C-D-X, where: A—0, Met, Met (O), Thr, Ala, His, Phe, Lys, Gly B—0, Gly, Asp, Trp, Gln, Asn, Tyr, Pro, Arg C—0, Arg, Phe, Tyr, Gly, His, Pro, Lys D—0, Val, Gly, Tyr, Trp, Phe, His X—OH, OCH3, NH2, where 0 is no amino acid residue, provided that if A?0, then B and/or C and/or D?0, if B?0, then C and/or D?0, excluding the peptides Phe-Thr-Lys-Pro-Gly (SEQ ID NO: 1), Thr-Lys-Pro-Pro-Arg (SEQ ID NO: 2), Thr-Lys-Pro-Arg-Gly (SEQ ID NO: 3).

Abstract: The invention relates to peptides with the following general formula: A-Thr-Lys-Pro-B-C-D-X, where: A—0, Met, Met (O), Thr, Ala, His, Phe, Lys, Gly B—0, Gly, Asp, Trp, Gln, Asn, Tyr, Pro, Arg C—0, Arg, Phe, Tyr, Gly, His, Pro, Lys D—0, Val, Gly, Tyr, Trp, Phe, His X—OH, OCH3, NH2, where 0 is no amino acid residue, provided that if A?0, then B and/or C and/or D?0, if B?0, then C and/or D?0, excluding the peptides Phe-Thr-Lys-Pro-Gly (SEQ ID NO: 1), Thr-Lys-Pro-Pro-Arg (SEQ ID NO: 2), Thr-Lys-Pro-Arg-Gly (SEQ ID NO: 3).

Abstract: The invention relates to the field of biochemistry and concerns of recombinant method for production of peptides and the resulting peptides. In particular, the invention relates to peptides with the following general formula: A-Thr-Lys-Pro-B-C-D-X, where: A—0, Met, Met (O), Thr, Ala, His, Phe, Lys, Gly B—0, Gly, Asp, Trp, Gin, Asn, Tyr, Pro, Arg C—0, Arg, Phe, Tyr, Gly, His, Pro, Lys D—0, Val, Gly, Tyr, Trp, Phe, His X—OH, OCH3, NH2, where 0 is no amino acid residue, provided that if A?0, then B and/or C and/or D?0, if B?0, then C and/or D?0, excluding the peptides Phe-Thr-Lys-Pro-Gly, Thr-Lys-Pro-Pro-Arg, Thr-Lys-Pro-Arg-Gly.

Abstract: The invention relates to a novel agent having an influence on the genital, sexual and reproductive function of mammals and human beings. More specifically, the invention relates to the use of a heptapeptide of the general formula (I) Thr-Lys-Pro-Arg-Pro-Gly-Pro (SEQ ID NO: 1) as a stimulator of the genital, sexual and reproductive function of mammals and human beings. The invention widens the range of agents available for stimulating the genital, sexual and reproductive function of mammals and human beings.

Abstract: The invention relates to a novel agent having an influence on the genital, sexual and reproductive function of mammals and human beings. More specifically, the invention relates to the use of a heptapeptide of the general formula (I) Thr-Lys-Pro-Arg-Pro-Gly-Pro as a stimulator of the genital, sexual and reproductive function of mammals and human beings. The invention widens the range of agents available for stimulating the genital, sexual and reproductive function of mammals and human beings.

Abstract: The invention relates to a tritium-traced saxitoxin dihydrichloride of formula (I) whose radioactivity ranges from 15-31 Ci/mmol and to a novel method for introducing tritium into a molecule comprising stages required for introducing tritium label by isotope exchange associated with the obtainment of a stably-traced radioactive preparation which can be used, in particular for receptor binding analyses.