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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Homogeneous Enzyme-linked Binding Assay for Mistletoe Lectin I Based on the Mistletoe Lectin I/D-galactose Interaction

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2000, v.13 no.5, pp.624-629
Rhee Paeng, Insook
Lee, Eun Ah
Chon, Chong Soon
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Abstract

A simple and rapid homogeneous enzyme-linked binding assay for mistletoe lectin I(ML I) was developed using a coupled enzyme system of malate dehydrogenase (MDH) and D-galactose. A highly substituted MDH-galactose conjugate was prepared by employing an isothiocyanate method for formation of thiourea bond. In the presence of ML I, ML I inhibits the activity of the conjugate based on the ML I/D-galactose specific interaction. Thus, the concentration of ML I can be related to the homogeneous inhibition of the MDH-galactose conjugate. Using this method. ML I can be measured at the level of microgram per milliliter within 10 minutes.

keywords
mistletoe lectin I, D-galactose, homogeneous assay, enzyme-linked binding assay


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