首页> 外文期刊>RSC Advances >Detection of tyrosine and monitoring tyrosinase activity using an enzyme cascade-triggered colorimetric reaction
【24h】

Detection of tyrosine and monitoring tyrosinase activity using an enzyme cascade-triggered colorimetric reaction

机译:使用酶级联触发比色反应检测酪氨酸和监测酪氨酸酶活性

获取原文
           

摘要

The aromatic amino acid tyrosine is an essential precursor for the synthesis of catecholamines, including L -DOPA, tyramine, and dopamine. A number of metabolic disorders have been linked to abnormal tyrosine levels in biological fluids. In this study, we developed an enzyme cascade-triggered colorimetric reaction for the detection of tyrosine, based on the formation of yellow pigment (betalamic acid) and red fluorometric betaxanthin. Tyrosinase converts tyrosine to L -DOPA, and DOPA-dioxygenase catalyzes oxidative cleavage of L -DOPA into betalamic acid. Response is linear for tyrosine from 5 to 100 μM, and the detection limit (LOD) is 2.74 μM. The enzyme cascade reaction was applied to monitor tyrosinase activity and tyrosinase inhibition assays. Lastly, the performance of the proposed biosensor proved successful in the analysis of urine samples without the need for pre-treatment.
机译:芳族氨基酸酪氨酸是合成儿茶酚胺的必要前体,包括L-dopa,酪胺和多巴胺。许多代谢障碍与生物流体中的异常酪氨酸水平有关。在这项研究中,基于黄色颜料(贝氨酸)和红色荧光纤维素的形成,我们开发了一种用于检测酪氨酸的酶级联触发的比色反应。酪氨酸酶将酪氨酸转化为L-DOPA,DOPA-DIOxygenase催化L-DOPA的氧化切割成甲醇酸。响应是酪氨酸的线性,从5到100μm,检测限(LOD)为2.74μm。施用酶级联反应监测酪氨酸酶活性和酪氨酸酶抑制测定。最后,在不需要预处理的情况下,拟议的生物传感器的性能证明了尿样的分析。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号