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    • 3. 发明申请
    • AFFINITY POLYPEPTIDE FOR PURIFICATION OF RECOMBINANT PROTEINS
    • 用于纯化重组蛋白的亲和聚合物(AFFINITY POLYPEPTIDE FOR PURIFICATION OF RECOMBINANT PROTEINS)
    • WO2007096899A3
    • 2008-03-13
    • PCT/IN2007000051
    • 2007-02-07
    • USV LTDRAO LAXMI SMISHRA SHRIKANTBORBHUIYA MONSUR AHMEDMHATRE DEEPATHAKUR PRITI
    • RAO LAXMI SMISHRA SHRIKANTBORBHUIYA MONSUR AHMEDMHATRE DEEPATHAKUR PRITI
    • C12N15/62
    • C12N15/62
    • The present disclosure provides an affinity polypeptide for the purification of a recombinant biologically active protein or polypeptide. Further, the present disclosure provides a fusion recombinant protein or polypeptide wherein the fusion recombinant protein comprises of at least two components, a biologically active polypeptide or protein or protein of interest and the affinity polypeptide. The biologically active polypeptide may be linked directly or indirectly to the affinity polypeptide by covalent binding. The present disclosure provides a recombinant expression vector for the producing said fusion recombinant protein in host cells. Further, the present disclosure provides an improved method of purification of recombinant protein from the host cells. Further, the disclosure provides a method of purification of the recombinant biologically active polypeptide or protein by immobilized metal ion chelating chromatography.
    • 本公开提供了用于纯化重组生物活性蛋白或多肽的亲和多肽。 此外,本公开提供了融合重组蛋白或多肽,其中融合重组蛋白包含至少两种组分,生物活性多肽或感兴趣的蛋白质或亲和性多肽。 生物活性多肽可以通过共价结合直接或间接地连接到亲和多肽上。 本公开内容提供了用于在宿主细胞中产生所述融合重组蛋白的重组表达载体。 此外,本公开提供了从宿主细胞纯化重组蛋白质的改进方法。 此外,本公开提供了通过固定金属离子螯合色谱法纯化重组生物活性多肽或蛋白质的方法。
    • 4. 发明申请
    • PROCESS FOR THE PREPARATION OF PEPTIDES
    • 制备肽的方法
    • WO2005121164A9
    • 2006-03-02
    • PCT/IN2004000315
    • 2004-10-10
    • USV LTDSAKSENA DIVYA LALMISHRA SHRIKANTMURALIDHARAN CHANDRAKESANTHAKARE MILINDPATIL NILESHKHARE ARUNA
    • SAKSENA DIVYA LALMISHRA SHRIKANTMURALIDHARAN CHANDRAKESANTHAKARE MILINDPATIL NILESHKHARE ARUNA
    • C07K1/00C07K1/06C07K7/06
    • C07K7/06Y02P20/55
    • The present invention relates to an improved process for the preparation of N6-(aminoiminomethyl)-N2-(3-mercapto-1-oxopropyl-L-lysylglycyl-L- -aspartyl-L-tryptophyl-L-prolyl-L-cysteinamide, cyclic(1 6)-disulfide of formula (1), which involves assembling amino acid residues and a thioalkyl carboxylic acid with appropriate protecting groups on a solid phase resin, cleaving the peptide thus obtained from the resin with concomitant removal of side chain protecting groups except Acm protecting group of thiol moiety to obtain peptide amide of formula(3), converting lysine residue of peptide amide of formula(3) having protected thiol group to homoarginine residue by guanylation to obtain peptide amide of formula(4), preparation of silver peptide of formula(5), followed by simultaneous deprotection and oxidation of the said silver peptide to obtain crude peptide amide comprising compound of formula(1) and finally subjecting to chromatographic purification. The described process is simple, easy, environment friendly and cost effective.
    • 本发明涉及一种制备N6-(氨基亚氨基甲基)-N2-(3-巯基-1-氧代丙基-L-赖氨酰甘氨酰基-L-天冬酰基-L-色氨酰-L-脯氨酰基-L-半胱氨酰胺, 式(1)的环状(16)二硫化物,其包括将固定相树脂上的氨基酸残基和硫代烷基羧酸与合适的保护基团组装,从树脂上切下由此获得的肽,同时除去侧链保护基 除了巯基部分的Acm保护基以获得式(3)的肽酰胺,通过胍基将具有保护的硫醇基的式(3)的肽酰胺的赖氨酸残基转化成高精氨酸残基,得到式(4)的肽酰胺,制备银 然后将所述银肽同时去保护和氧化,得到包含式(1)化合物的粗肽酰胺,最后进行色谱纯化,所述方法简单,容易 环保,性价比高。