Serine-rich peptide linkers
    4.
    发明授权
    Serine-rich peptide linkers 失效
    富含丝氨酸的肽接头

    公开(公告)号:US5525491A

    公开(公告)日:1996-06-11

    申请号:US257341

    申请日:1994-06-09

    IPC分类号: C07K16/00 C12N15/62 C07K16/46

    摘要: Disclosed are serine-rich peptide linkers for linking two or more protein domains to form a fused protein. The peptide linkers contains at least 40% serine residues and preferably have the formula (Ser, Ser,Ser,Ser,Gly).sub.y where y is .gtoreq.1. The resulting fused domains are biologically active together or individually, have improved solubility in physiological media, and improved resistance to proteolysis.

    摘要翻译: 公开了用于连接两个或多个蛋白质结构域以形成融合蛋白的丝氨酸丰富的肽接头。 肽接头含有至少40%的丝氨酸残基,并且优选具有式(Ser,Ser,Ser,Ser,Gly)y,其中y为≥1。 所得的融合结构域在一起或单独地具有生物活性,在生理介质中具有改善的溶解性,并且改善了对蛋白水解的抵抗力。

    Method of inhibiting binding of PDGF to a PDGF receptor by biosynthetic
PDGF antagonists
    5.
    发明授权
    Method of inhibiting binding of PDGF to a PDGF receptor by biosynthetic PDGF antagonists 失效
    通过生物合成PDGF拮抗剂抑制PDGF与PDGF受体结合的方法

    公开(公告)号:US5418135A

    公开(公告)日:1995-05-23

    申请号:US95898

    申请日:1993-07-21

    申请人: Roy H. L. Pang

    发明人: Roy H. L. Pang

    CPC分类号: C07K14/49

    摘要: Disclosed are polypeptides which antagonize the activity of platelet-derived growth factor (PDGF). These polypeptides include an amino acid sequence sufficiently duplicative of at least a portion of the amino acid sequence of an A chain of PDGF such that the polypeptides bind a cell membrane-bound receptor for native PDGF on a cell that responds biologically to the binding of PDGF. The binding of the antagonist to the receptor is effective to inhibit PDGF binding and activity. Also disclosed are methods of preparing and using these antagonists.

    摘要翻译: 公开了拮抗血小板衍生生长因子(PDGF)的活性的多肽。 这些多肽包括与PDGF的A链的氨基酸序列的至少一部分充分重复的氨基酸序列,使得多肽在细胞上结合天然PDGF的细胞膜结合受体,所述细胞对PDGF的结合具有生物学反应 。 拮抗剂与受体的结合有效抑制PDGF的结合和活性。 还公开了制备和使用这些拮抗剂的方法。

    Recombinant DNA enclosed amphiphilic leader sequences for the production
and purification of fusion proteins
    6.
    发明授权
    Recombinant DNA enclosed amphiphilic leader sequences for the production and purification of fusion proteins 失效
    用于产生和纯化融合蛋白的重组DNA封闭的两亲性前导序列

    公开(公告)号:US5302526A

    公开(公告)日:1994-04-12

    申请号:US5322

    申请日:1993-01-15

    摘要: Disclosed is a novel polypeptide useful as a leader or trailer peptide moiety in recombinant DNA protein production techniques involving fused protein methodology. The polypeptide comprises an amphiphilic helix designed at the DNA level to have hydrophilic charged amino acid residues on one side of the barrel of the helix and nonpolar amino acid residues on the other side of the barrel of the helix. When DNA encoding the helix is attached to a gene encoding a protein of interest, high level expression is achieved and inclusion bodies are spontaneously formed. The inclusion bodies may be collected and purified easily by altering the ionic strength and/or pH of media used to dissolve the inclusion bodies. After purification, the fused protein is cleaved to separate the amphiphilic helix from the product.

    摘要翻译: 公开了一种新的多肽,可用作涉及融合蛋白方法的重组DNA蛋白生产技术中的前导肽或尾部肽部分。 多肽包含在DNA水平上设计的两亲性螺旋,其在螺旋管的一侧具有亲水带电的氨基酸残基和在螺旋的桶的另一侧上的非极性氨基酸残基。 当编码螺旋的DNA连接到编码目的蛋白质的基因时,实现了高水平的表达,并且包涵体被自发形成。 可以通过改变用于溶解包涵体的介质的离子强度和/或pH来容易地收集和纯化包涵体。 纯化后,将融合的蛋白质切割以将两亲性螺旋与产物分离。

    Polypeptide linkers for production of biosynthetic proteins
    7.
    发明授权
    Polypeptide linkers for production of biosynthetic proteins 失效
    用于生物合成蛋白质的多肽接头

    公开(公告)号:US5258498A

    公开(公告)日:1993-11-02

    申请号:US955399

    申请日:1992-10-01

    摘要: Disclosed are a family of synthetic proteins having binding affinity for a preselected antigen, and multifunctional proteins having such affinity. The proteins are characterized by one or more sequences of amino acids constituting a region which behaves as a biosynthetic antibody binding site (BABS) The sites comprise V.sub.H -V.sub.L or V.sub.L -V.sub.H -like single chains wherein the V.sub.H and V.sub.L -like sequences are attached by a polypeptide linker, or individual V.sub.H or V.sub.L -like domains. The binding domains comprise linked CDR and FR regions, which may be derived from separate immunoglobulins. The proteins may also include other polypeptide sequences which function, e.g., as an enzyme, toxin, binding site, or site for attachment to an immobilization media or radioactive atom. Methods are disclosed for producing the proteins, for designing BABS having any specificity that can be elicited by in vivo generation of antibody for producing analogs thereof, and for producing multifunctional synthetic proteins which are self-targeted by virtue of their binding site region.

    摘要翻译: PCT No.PCT / US88 / 01737 Sec。 371日期1989年1月23日 102(e)日期1989年1月23日PCT提交1988年5月19日PCT公布。 出版物WO88 / 09344 日期为1988年12月1日。公开是对预选抗原具有结合亲和力的合成蛋白家族,以及具有这种亲和力的多功能蛋白质。 蛋白质的特征在于构成表现为生物合成抗体结合位点(BABS)的区域的一个或多个氨基酸序列。位点包含VH和VL-样的单链,其中VH和VL样序列被连接 通过多肽接头,或单独的VH或VL样结构域。 结合域包含连接的CDR和FR区,其可以衍生自单独的免疫球蛋白。 蛋白质还可以包括其它多肽序列,其功能例如作为酶,毒素,结合位点或用于附着到固定化介质或放射性原子的位点。 公开了用于制备蛋白质的方法,用于设计具有可通过体内产生抗体产生其类似物的任何特异性的BABS,以及用于生产通过其结合位点区域自身靶向的多功能合成蛋白质。

    Leader sequences for the production of recombinant proteins
    8.
    发明授权
    Leader sequences for the production of recombinant proteins 失效
    用于重组蛋白生产的序列

    公开(公告)号:US5215896A

    公开(公告)日:1993-06-01

    申请号:US857684

    申请日:1992-03-25

    IPC分类号: C07K14/485 C12N15/62

    摘要: Disclosed is a novel polypeptide useful as a leader or trailer peptide moiety in recombinant DNA protein production techniques involving fused protein methodology The polypeptide comprises an amphiphilic helix designed at the DNA level to have hydrophilic charged amino acid residues on one side of the barrel of the helix and nonpolar amino acid residues on the other side of the barrel of the helix. When DNA encoding the helix is attached to a gene encoding a protein of interest, high level expression is achieved and inclusion bodies are spontaneously formed. The inclusion bodies may be collected and purified easily by altering the ionic strength and/or pH of media used to dissolve the inclusion bodies. After purification, the fused protein is cleaved to separate the amphiphilic helix from the product.

    摘要翻译: 公开了一种新型多肽,其用作涉及融合蛋白方法的重组DNA蛋白质生产技术中的前导肽或尾部肽部分。多肽包含在DNA水平上设计的在螺旋体的一侧具有亲水带电荷的氨基酸残基的两亲性螺旋 和在螺旋管的另一侧的非极性氨基酸残基。 当编码螺旋的DNA连接到编码目的蛋白质的基因时,实现了高水平的表达,并且包涵体被自发形成。 可以通过改变用于溶解包涵体的介质的离子强度和/或pH来容易地收集和纯化包涵体。 纯化后,将融合的蛋白质切割以将两亲性螺旋与产物分离。