کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5507906 | 1400354 | 2017 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biosynthesis-inspired deracemizative production of d-luciferin by combining luciferase and thioesterase
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کلمات کلیدی
PLESLRppbDMEMAMACRRLUDulbecco's modified Eagle Medium - Eagle Medium اصلاح شده DulbeccoPorcine liver esterase - استراز کبدی گوشت خوکpotassium phosphate buffer - بافر فسفات پتاسیمEnantiomeric excess - بیش از حد انعطافیBiosynthesis - بیوسنتزBioluminescence - بیولومینسانسThioesterase - تیواستروئیدDeracemization - جداسازیLuciferin - لوسیفرینrelative light units - واحدهای نسبی نورFirefly - کرم شب تابcoenzyme A - کوآنزیم ACoASH - کوشش
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Due to the strict enantioselectivity of firefly luciferase, only d-luciferin can be used as a substrate for bioluminescence reactions. Unfortunately, luciferin racemizes easily and accumulation of nonluminous l-luciferin has negative influences on the light emitting reaction. Thus, maintaining the enantiopurity of luciferin in the reaction mixture is one of the most important demands in bioluminescence applications using firefly luciferase. In fireflies, however, l-luciferin is the biosynthetic precursor of d-luciferin, which is produced from the L-form undergoing deracemization. This deracemization consists of three successive reactions: l-enantioselective thioesterification by luciferase, in situ epimerization, and hydrolysis by thioesterase. In this work, we introduce a deracemizative luminescence system inspired by the biosynthetic pathway of d-luciferin using a combination of firefly luciferase from Luciola cruciata (LUC-G) and fatty acyl-CoA thioesterase II from Escherichia coli (TESB). The enzymatic reaction property analysis indicated the importance of the concentration balance between LUC-G and TESB for efficient d-luciferin production and light emission. Using this deracemizative luminescence system, a highly sensitive quantitative analysis method for l-cysteine was constructed. This LUC-G-TESB combination system can improve bioanalysis applications using the firefly bioluminescence reaction by efficient deracemization of D-luciferin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimica et Biophysica Acta (BBA) - General Subjects - Volume 1861, Issue 8, August 2017, Pages 2112-2118
Journal: Biochimica et Biophysica Acta (BBA) - General Subjects - Volume 1861, Issue 8, August 2017, Pages 2112-2118
نویسندگان
Juri Maeda, Dai-ichiro Kato, Masatoshi Okuda, Masahiro Takeo, Seiji Negoro, Kazunari Arima, Yuji Ito, Kazuki Niwa,