Robust light emission from cyclic alkylaminoluciferin substrates for firefly luciferase.

Robust light emission from cyclic alkylaminoluciferin substrates for firefly luciferase.
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DOI:
10.1021/ja104525m
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发表时间:
2010-10-06
影响因子:
15
通讯作者:
Miller, Stephen C.
Miller, Stephen C.
中科院分区:
化学1区
文献类型:
--
作者:
Reddy, Gadarla Randheer;Thompson, Walter C.;Miller, Stephen C.

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萤火虫荧光素酶利用 ATP 和氧气的化学能将其底物 D-荧光素转化为激发态氧化荧光素分子。该分子弛豫至基态导致黄绿色光发射。描述了合成的环状烷基氨基荧光素,其可通过修饰的荧光素酶 Ultra-Glo 实现强大的红移光发射。总体发光量高于无环烷基氨基荧光素、氨基荧光素和天然底物 D-荧光素。
Firefly luciferase utilizes the chemical energy of ATP and oxygen to convert its substrate, D-luciferin, into an excited state oxyluciferin molecule. Relaxation of this molecule to the ground state is responsible for the yellow-green light emission. Synthetic cyclic alkylaminoluciferins are described that allow robust red-shifted light emission with the modified luciferase Ultra-Glo. Overall light emission is higher than that of acyclic alkylaminoluciferins, aminoluciferin, and the native substrate, D-luciferin.
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