Synthesis of Green Emitting Coumarin Bioconjugate for the Selective Determination of Flu Antigen
作者:Ram Prasad Bhusal、Pyo-Yun Cho、Soon-Ai Kim、Hyun Park、Hak-Sung Kim
DOI:10.5012/bkcs.2011.32.5.1461
日期:2011.5.20
Labeling of Proteins with the Fluorophore 7-amino-4-methylcoumarin (AMC) Generated Novel Proteolytic Substrates
申请人:Davies Kelvin J.A.
公开号:US20130059321A1
公开(公告)日:2013-03-07
A method of measuring the degradation of intact proteins includes a step of providing a protein substrate having one or more free or exposed carboxyl groups and then reductively attaching 7-amino-4-methylcoumarin (AMC) to the protein substrate with a reducing agent. The protein substrate is contacted in a test solution with one or more proteolytic enzymes that degrade the protein substrate. The amount of AMC attached to the protein substrate is then determined by monitoring the fluorescence of free 7-amino-4-methylcoumarin that is formed during degradation of the protein substrate to protein fragments.
novel array of 7-guanidinyl coumarins by incorporating different substituted guanidino moieties into a coumarin scaffold. These compounds were prepared by guanidinylation reagent S-methylisothiourea or TFA-protected pyrazole-carboxamidine. Examination of their photophysicalproperties revealed that the fluorescence emission of alkyloxycarbonyl-substituted guanidinyl coumarin was significantly enhanced