申请人:Kitagawa Takeshi
公开号:US20100330700A1
公开(公告)日:2010-12-30
An object of the present invention is to provide a peptide derivative for determining β-glucan or endotoxin which allows high sensitivity measurement, and a method for determining β-glucan and/or endotoxin using the same. The present invention relates to (1) a peptide derivative represented by the following general formula [1]:
X-A
1
-Gly-Arg-A
2
-E-D [1],
(2) a reagent for determining β-glucan and/or endotoxin comprising the above-described peptide derivative, (3) a method for determining β-glucan and/or endotoxin, characterized in that a sample containing β-glucan and/or endotoxin, an amebocyte lysate of a horseshoe crab and the above-described peptide derivative are reacted each other, then the resulting released compound represented by the following general formula [2]:
H-A
2
-E-D [2]
is separated from unreacted substance and quantified, and the determination is made based on this value, and (4) a reagent kit for determining β-glucan and/or endotoxin, comprising an amebocyte lysate of a horseshoe crab and the above-described peptide derivative as constituents thereof.
本发明的目的是提供一种用于测定β-葡聚糖或内毒素的肽衍生物,该肽衍生物允许高灵敏度测量,并提供使用该肽衍生物测定β-葡聚糖和/或内毒素的方法。本发明涉及(1)由以下通式[1]表示的肽衍生物:X-A1-Gly-Arg-A2-E-D[1],(2)用上述肽衍生物的试剂用于测定β-葡聚糖和/或内毒素,(3)一种用于测定β-葡聚糖和/或内毒素的方法,其特征在于将含有β-葡聚糖和/或内毒素的样品、一种马蹄蟹的阿米巴溶解液和上述肽衍生物反应,然后分离出代表以下通式[2]的所释放的化合物:H-A2-E-D[2],并对此值进行定量测定,然后进行测定,以及(4)用于测定β-葡聚糖和/或内毒素的试剂盒,其包括一种马蹄蟹的阿米巴溶解液和上述肽衍生物作为其组分。