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Preparation of a chemiluminescent imidoester for the non-radioactive labelling of proteins

Batmanghelich, Shariar, Brown, Richard C., Woodhead, J. Stuart, Weeks, Ian ORCID: and Smith, Keith 1992. Preparation of a chemiluminescent imidoester for the non-radioactive labelling of proteins. Journal of photochemistry and photobiology. B, Biology 12 (2) , pp. 193-201. 10.1016/1011-1344(92)85008-I

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A chemiluminescent aryl acridinium ester was synthesized which possesses an imidate ester group capable of reacting with proteins under mild conditions. The compound can be detected at levels as low as 5.2 × 10−19 mol using commercially available luminometers and can therefore be used to produce high specific activity labelled antibodies for use in immunochemiluminometric assays. The imidate ester compares favourably with a previously reported N-succinimidyl ester in terms of its labelling properties but is easier to synthesize, requiring one less step. The compound was used to label affinity purified sheep antibodies to human parathyroid hormone to demonstrate its utility in a two-site immunochemiluminometric assay for the measurement of intact parathyroid hormone.

Item Type: Article
Status: Published
Schools: Medicine
Systems Immunity Research Institute (SIURI)
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: acridinium ester; chemiluminescence; imidoester; immunoassay; labelled antibodies; luminometry
Publisher: Elsevier
ISSN: 1011-1344
Last Modified: 25 Oct 2023 01:05

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