Aequorin mutants with increased thermostability.
Aequorin mutants with increased thermostability.
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具有增加恒温性的Aquorin突变体。
DOI:
10.1007/s00216-014-8039-6
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发表时间:
2014-09
影响因子:
4.3
通讯作者:
Daunert, Sylvia
中科院分区:
文献类型:
--
作者:
Qu, Xiaoge;Rowe, Laura;Dikici, Emre;Ensor, Mark;Daunert, Sylvia
Bioluminescent labels can be especially useful for in vivo and live animal studies due to the negligible bioluminescence background in cells and most animals, and the non-toxicity of bioluminescent reporter systems. Significant thermal stability of bioluminescent labels is essential, however, due to the longitudinal nature and physiological temperature conditions of many bioluminescent based studies. To improve the thermostability of the bioluminescent protein aequorin we employed random and rational mutagenesis strategies to create two thermostable double mutants, S32T/E156V and M36I/E146K, and a particularly thermostable quadruple mutant, S32T/E156V/Q168R/L170I. The double aequorin mutants, S32T/E156V and M36I/E146K, retained 4 and 2.75 times more of their initial bioluminescence activity than wild type aequorin during thermostability studies at 37 °C. Moreover, the quadruple aequorin mutant, S32T/E156V/Q168R/L170I, exhibited more thermostability at a variety of temperatures than either double mutant alone, producing the most thermostable aequorin mutant identified thus far.
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影响因子:
3.5
作者:
OHMIYA, Y;TSUJI, FI
通讯作者:
TSUJI, FI
影响因子:
3.5
作者:
TANAHASHI, H;ITO, T;SAKAKI, Y
通讯作者:
SAKAKI, Y
影响因子:
4.8
作者:
Tsuzuki, K;Tricoire, L;Lambolez, B
通讯作者:
Lambolez, B
影响因子:
4.1
作者:
WATKINS, NJ;CAMPBELL, AK
通讯作者:
CAMPBELL, AK
影响因子:
2.4
作者:
Koksharov, Mikhail I.;Ugarova, Natalia N.
通讯作者:
Ugarova, Natalia N.