Synthesis of the heptadecapeptide corresponding to the full sequence of dynorphin.
作者:MITSUHIRO WAKIMASU、CHIEKO KITADA、MASAHIKO FUJINO
DOI:10.1248/cpb.30.2364
日期:——
The synthesis of a heptadecapeptide corresponding to the amino acid sequence of dynorphin, H-Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-Trp-Asp-Asn-Gln-OH, using the 4-methoxy-2, 6-dimethylbenzenesulfonyl (Mds) group for the protection of the guanidino function of arginine, is described. To synthesize dynorphin, three peptide fragments corresponding to residues, 1-3, 4-10, 11-17, were prepared and used as building blocks for the final construction of the full sequence of this opioid peptide. Final deprotection of the fully protected peptide was achieved by treatment with 0.15M methanesulfonic acid in trifluoroacetic acid-thioanisole at room temperature for 1 h and the purification was effected by column chromatography on carboxymethyl (CM)-cellulose and by preparative high performance liquid chromatography (HPLC). The synthetic heptadecapeptide was compared with purified natural dynorphin by means of reverse-phase HPLC and found to be identical with natural dynorphin.
本研究描述了与达因吗啡氨基酸序列 H-Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-Trp-Asp-Asn-Gln-OH 相对应的十七肽的合成过程,其中使用了 4-甲氧基-2,6-二甲基苯磺酰基 (Mds) 来保护精氨酸的胍基功能。为了合成达因吗啡,制备了与 1-3、4-10、11-17 残基相对应的三个肽片段,并将其用作最终构建这种阿片肽全序列的构件。用三氟乙酸-硫代苯甲醚中的 0.15M 甲基磺酸在室温下处理 1 小时后,对完全保护的肽进行最终脱保护,然后用羧甲基纤维素(CM)柱层析和制备型高效液相色谱法(HPLC)进行纯化。通过反相高效液相色谱法,将合成的十七肽与纯化的天然达因吗啡肽进行比较,发现它们与天然达因吗啡肽完全相同。