In an enzyme immunoassay when a specific antibody produced by contacting a peptide essential to the formation of a specific antibody to a peptide antigen, a freeze-dried material of β-D-galactosidase-enzyme conjugate or a peptide-enzyme conjugate prepared by coupling a labeling enzyme with a peptide of the general formula:
H-R1-Pro-Ser-Asp-Thr- Pro-Ile-Leu-Pro-Gln-OH
wherein R1 is a peptide fragment consisting of a 1 to 14 amino acid residues including Gly in the 14-position of the peptide Ala1-Pro2-Pro3- Pro4-Ser5-Leu6- Pro7-Ser8-Pro9 Ser10. Arg11-Leu12. Pro13-Gly14 is used. a high reproducibility of the result of the enzyme immunoassay is obtained.
在一种酶免疫测定中,当特异性
抗体的产生是通过将特异性
抗体形成所必需的肽与肽抗原接触时,β-
D-半乳糖苷酶-酶结合物的冻干材料或通过将标记酶与通式为β-
D-半乳糖苷酶的肽偶联而制备的肽-酶结合物:
H-R1-Pro-Ser-Asp-Thr- Pro-Ile-Leu-Pro-Gln-OH
其中R1是由1至14个
氨基酸残基组成的
多肽片段,包括
多肽Ala1-Pro2-Pro3-Pro4-Ser5-Leu6-Pro7-Ser8-Pro9 Ser10.Arg11-Leu12.使用 Pro13-Gly14,酶免疫测定结果的重现性很高。