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    • 2. 发明公开
    • POLYPEPTIDE SOLUTION, ARTIFICIAL POLYPEPTIDE FIBER PRODUCTION METHOD AND POLYPEPTIDE PURIFICATION METHOD USING SAME
    • 多肽溶液,人工多肽纤维生产方法和使用相同多肽的纯化方法
    • EP3281950A1
    • 2018-02-14
    • EP17194459.8
    • 2012-10-29
    • Spiber Inc.
    • SUGAHARA, JunichiSEKIYAMA, KaoriSATO, RyotaISHIKAWA, MizukiMURATA, ShinyaSEKIYAMA, KazuhideOTOMO, Kazuko
    • C07K14/435D01D5/04D01F4/02C12N15/09
    • C08K5/41B29D99/0078C07K14/43518C08K3/16C08K5/20D01D5/04D01F4/02D01F6/68Y10S530/858
    • A polypeptide solution of the present invention is a polypeptide solution in which a polypeptide derived from natural spider silk proteins is dissolved in a solvent. The solvent contains at least one selected from the following (i)-(ii): (i) DMSO with an inorganic salt; and (ii) DMF with an inorganic salt. Further, in the present invention, an artificial polypeptide fiber is obtained by: using the polypeptide solution as a dope solution; and extruding the dope solution from a spinneret into a desolvation bath so as to eliminate the solvent from the dope solution and form a fiber to produce an undrawn yarn. Moreover, in the present invention, a polypeptide is purified by subjecting the polypeptide solution to heat treatment and thereafter removing an undissolved substance therefrom. Thus, the present invention provides the polypeptide solution whose solute has high solubility and solvent itself is low cost, and that allows dissolution at high temperatures and has high safety: a method for producing an artificial polypeptide fiber: and a method for purifying a polypeptide.
    • 本发明的多肽溶液是将来自天然蜘蛛丝蛋白质的多肽溶解于溶剂中的多肽溶液。 该溶剂含有选自下列(i) - (ii)中的至少一种:(i)具有无机盐的DMSO; 和(ii)DMF与无机盐。 此外,在本发明中,人造多肽纤维通过以下步骤获得:使用多肽溶液作为掺杂溶液; 并将纺丝原液从喷丝头挤出到去溶剂浴中以从纺丝原液中除去溶剂并形成纤维以生产未拉伸丝。 此外,在本发明中,通过对多肽溶液进行热处理,然后从中除去未溶解物质来纯化多肽。 因此,本发明提供溶质溶解性高,溶剂本身成本低,并且能够在高温下溶解,安全性高的多肽溶液:人造多肽纤维的制造方法以及多肽的纯化方法。