Lipopolysaccharide binding protein and process for producing the same
    1.
    发明授权
    Lipopolysaccharide binding protein and process for producing the same 失效
    脂多糖结合蛋白及其制备方法

    公开(公告)号:US5760177A

    公开(公告)日:1998-06-02

    申请号:US393058

    申请日:1995-02-23

    摘要: The invention provides a lipopolysaccharide (LPS) binding protein isolated from horseshoe crab. The LPS binding protein is isolated by (i) extracting the hemocyte membrane fraction of horseshoe crab with a polyethylene glycol ether type nonionic surface active agent in the presence of Ca ions, (ii) combining the extract with immobilized LPS under conditions that permit the LPS binding protein to bind the immobilized LPS to produce an LPS-LPS binding protein complex, and (iii) harvesting the LPS binding protein released from the complex in the presence of a chelating agent. The isolated LPS binding protein has a molecular weight of about 27,000 daltons as determined by SDS polyacrylamide gel electrophoresis and is operative to bind a lipopolysaccharide endotoxin. Accordingly, the isolated LPS binding protein can be used for detecting endotoxin and/or removing endotoxin from an injectable medicine.

    摘要翻译: 本发明提供从马蹄蟹分离的脂多糖(LPS)结合蛋白。 通过(i)在Ca离子存在下用聚乙二醇醚型非离子表面活性剂提取鲎的血细胞膜级分,分离LPS结合蛋白,(ii)在允许LPS的条件下将提取物与固定的LPS组合 结合蛋白质以结合固定的LPS以产生LPS-LPS结合蛋白复合物,和(iii)在螯合剂存在下从复合物中收获释放的LPS结合蛋白。 通过SDS聚丙烯酰胺凝胶电泳测定,分离的LPS结合蛋白具有约27,000道尔顿的分子量,并且可操作地结合脂多糖内毒素。 因此,分离的LPS结合蛋白可用于从可注射药物中检测内毒素和/或除去内毒素。

    Polypeptides, and preparation and DNA encoding thereof
    2.
    发明授权
    Polypeptides, and preparation and DNA encoding thereof 失效
    多肽,及其编码和编码DNA

    公开(公告)号:US5965725A

    公开(公告)日:1999-10-12

    申请号:US18170

    申请日:1998-02-03

    摘要: The present invention relates to polypeptide having a primary structure of amino acid sequence shown by Sequence List Sequence No. 1 and DNA encoding for the polypeptide. The polypeptide is obtainable by following steps (1)-(3):Step (1): extracting small granule fraction of homocytes of horseshoe crab with a buffer containing protein denaturing agent and chelating agent,Step (2): subjecting said extract to reverse phase high performance liquid chromatography,Step (3): eluting by concentration gradient elution with a hydrophobic organic solvent.Also, the polypeptide is produced by chemical synthesis. The polypeptide has similar chemical structure to defensin and is useful as gargles, disinfectants, antiseptics or antimicrobials.

    摘要翻译: 本发明涉及具有序列表序列号1所示的氨基酸序列的一级结构的多肽和编码该多肽的DNA。 通过以下步骤(1) - (3)可获得多肽:步骤(1):用含有蛋白质变性剂和螯合剂的缓冲液提取鲎的同质异构体的小颗粒级分,步骤(2):使所述提取物逆转 阶段高效液相色谱法,步骤(3):用疏水性有机溶剂的浓度梯度洗脱洗脱。 而且,多肽是通过化学合成产生的。 该多肽与防御素具有相似的化学结构,可用作漱口剂,消毒剂,防腐剂或抗微生物剂。

    Horseshoe crab hemocyte polypeptides, and preparation and DNA encoding
thereof
    3.
    发明授权
    Horseshoe crab hemocyte polypeptides, and preparation and DNA encoding thereof 失效
    马蹄蟹血细胞多肽及其制备及编码DNA

    公开(公告)号:US5861378A

    公开(公告)日:1999-01-19

    申请号:US505617

    申请日:1995-07-21

    摘要: The present invention relates to polypeptide having a primary structure of amino acid sequence shown by Sequence List Sequence No. 1 and DNA encoding for the polypeptide. The polypeptide is obtainable by following steps (1)-(3):Step (1): extracting small granule fraction of homocytes of horseshoe crab with a buffer containing protein denaturing agent and chelating agent,Step (2): subjecting said extract to reverse phase high performance liquid chromatography,Step (3): eluting by concentration gradient elution with a hydrophobic organic solvent.Also, the polypeptide is produced by chemical synthesis. The polypeptide has similar chemical structure to defensin and is useful as gargles, disinfectants, antiseptics or antimicrobials.

    摘要翻译: 本发明涉及具有序列表序列号1所示的氨基酸序列的一级结构的多肽和编码该多肽的DNA。 通过以下步骤(1) - (3)可获得多肽:步骤(1):用含有蛋白质变性剂和螯合剂的缓冲液提取鲎的同质异体的小颗粒级分,步骤(2):使所述提取物逆转 阶段高效液相色谱法,步骤(3):用疏水性有机溶剂的浓度梯度洗脱洗脱。 而且,多肽是通过化学合成产生的。 该多肽与防御素具有相似的化学结构,可用作漱口剂,消毒剂,防腐剂或抗微生物剂。

    DNA encoding horseshoe crab amebocyte lysate factor G subunit A
    5.
    发明授权
    DNA encoding horseshoe crab amebocyte lysate factor G subunit A 有权
    编码鲎的细胞裂解物因子G亚基A的DNA

    公开(公告)号:US6077946A

    公开(公告)日:2000-06-20

    申请号:US330945

    申请日:1999-06-11

    摘要: This invention relates to a DNA shown by SEQ ID No. 1 and an amino acid sequence coded by said DNA. This invention also relates to a DNA and an amino acid sequence of subunit a of (1.fwdarw.3)-.beta.-glucan sensitive factor derived from amebocytes of horseshoe crab and have potent affinity to (1.fwdarw.3)-.beta.-D-glucan in cell walls of fungi. Therefore, the invention is useful for the diagnosis of fungal diseases and as antimicrobial or eradicating agent of fungi in combination with an antifungal agent.

    摘要翻译: 本发明涉及SEQ ID No.1所示的DNA和由所述DNA编码的氨基酸序列。 本发明还涉及来源于鲎的小单体的(1-> 3)-β-葡聚糖敏感因子亚单位a的DNA和氨基酸序列,并且对(1-> 3)-β-D- 葡聚糖在真菌的细胞壁中。 因此,本发明可用于真菌疾病的诊断和与抗真菌剂组合的真菌的抗微生物剂或根除剂。

    Horseshoe crab amebocyte lysate factor G subunit A
    6.
    发明授权
    Horseshoe crab amebocyte lysate factor G subunit A 失效
    马蹄蟹细胞裂解物因子G亚基A

    公开(公告)号:US5795962A

    公开(公告)日:1998-08-18

    申请号:US392828

    申请日:1995-02-28

    摘要: This invention relates to a DNA shown by SEQ ID No. 1 and an amino acid sequence coded by said DNA. This invention also relates to a DNA and an amino acid sequence of subunit a of (1.fwdarw.3)-.beta.-D-glucan sensitive factor derived from amebocytes of horseshoe crab and have potent affinity to (1.fwdarw.3)-.beta.-D-glucan in cell walls of fungi. Therefore, the invention is useful for the diagnosis of fungal diseases and as antimicrobial or eradicating agent of fungi in combination with an antifungal agent.

    摘要翻译: PCT No.PCT / JP94 / 01057 Sec。 371日期1995年2月28日 102(e)1995年2月28日PCT PCT 1994年6月29日PCT公布。 公开号WO95 / 01432 日期1995年1月12日本发明涉及SEQ ID No.1所示的DNA和由所述DNA编码的氨基酸序列。 本发明还涉及来源于鲎的微泡的(1-> 3)-β-D-葡聚糖敏感因子的亚基a的DNA和氨基酸序列,并且对(1-> 3)-β- 真菌细胞壁中的D-葡聚糖。 因此,本发明可用于真菌疾病的诊断和与抗真菌剂组合的真菌的抗微生物剂或根除剂。

    Process for determining bacterial endotoxin and reagents used therefor
    8.
    发明授权
    Process for determining bacterial endotoxin and reagents used therefor 失效
    用于确定细菌内毒素的方法和用于其的试剂

    公开(公告)号:US4188264A

    公开(公告)日:1980-02-12

    申请号:US847582

    申请日:1977-11-01

    摘要: A process for determining a bacterial endotoxin, which comprises contacting an assay sample with (A) a material selected from the group consisting of an amoebocyte lysate of horseshoe crab an a pro-clotting enzyme separated from the lysate, and (B) a peptide-type substrate of the formula (R.sub.1 --Gly--Arg--R.sub.2), wherein R.sub.1 represents a member selected from the group consisting of an L-amino acid moiety whose N-terminal is protected by a protective group, a peptide moiety consisting of an L-amino acid and protected by a protective group at its N-terminal, a D-amino acid substituted L-amino acid moiety, and a D-amino acid substituted peptide moiety consisting of an L-amino acid, and is bonded to the amino group of the glycine moiety expressed by Gly through a peptide bond; and R.sub.2 represents a moiety which is bonded to the C-terminal of an L-arginine moiety expressed by Arg through an acid amide bond and/or ester bond and can be enzymatically hydrolyzed in the presence of the material (A) and the endotoxin to liberate R.sub.2 H, and/or its mineral acid salt, and detecting the resulting R.sub.2 H in which R.sub.2 is as defined above; and the above reagent used therefor.

    摘要翻译: 一种确定细菌内毒素的方法,其包括使测定样品与(A)选自由鲎的变形细胞裂解物组成的组中的材料与从裂解物分离的促凝血酶接触,和(B) 式(R1-Gly-Arg-R2)的底物,其中R1表示选自由N-末端被保护基保护的L-氨基酸部分的成员,由L组成的肽部分 N-氨基酸,其保护基在其N-末端,D-氨基酸取代的L-氨基酸部分和由L-氨基酸组成的D-氨基酸取代的肽部​​分保护,并与氨基酸连接 通过肽键由Gly表示的甘氨酸部分的基团; 并且R 2表示通过酰胺键和/或酯键与Arg表示的L-精氨酸部分的C-末端键合的部分,并且可以在材料(A)和内毒素的存在下进行酶促水解 释放R2H和/或其无机酸盐,并检测其中R2如上所定义的所得R2H; 和用于其的上述试剂。