MUTANT BEETLE LUCIFERASE, GENES, RECOMBINANT VECTOR, TRANSFORMANT, AND METHOD FOR PRODUCING MUTANT BEETLE LUCIFERASE
PROBLEM TO BE SOLVED: To provide a mutant beetle luciferase, which is not easily affected by light emission inhibition by NaCl.SOLUTION: According to the present invention, there is provided a mutant beetle luciferase comprising a variation in an amino acid sequence encoding the wild-type beetle luc...
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Main Authors | , , |
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Format | Patent |
Language | English Japanese |
Published |
28.12.2017
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Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To provide a mutant beetle luciferase, which is not easily affected by light emission inhibition by NaCl.SOLUTION: According to the present invention, there is provided a mutant beetle luciferase comprising a variation in an amino acid sequence encoding the wild-type beetle luciferase. Here, the variation is as follows: in an amino acid sequence of wild-type North American firefly luciferase, an amino acid corresponding to valine at position 288 is isoleucine, leucine, or phenylalanine; an amino acid corresponding to leucine at position 376 is proline; an amino acid corresponding to glutamic acid at position 455 is valine, alanine, serine, leucine, isoleucine, or phenylalanine; or an amino acid corresponding to glutamic acid at position 488 is valine, alanine, serine, leucine, isoleucine, or phenylalanine. The luminescence intensity due to a luciferin-luciferase luminescence reaction in a 0.9-mass% NaCl solution is 50% or more in a NaCl-free solution.SELECTED DRAWING: None
【課題】NaClによる発光阻害の影響を受けにくい変異型甲虫ルシフェラーゼの提供。【解決手段】野生型甲虫ルシフェラーゼをコードするアミノ酸配列において、野生型北米ホタルルシフェラーゼのアミノ酸配列における、288位のバリンに相当するアミノ酸がイソロイシン、ロイシン若しくはフェニルアラニンであり、376位のロイシンに相当するアミノ酸がプロリンであり、455位のグルタミン酸に相当するアミノ酸がバリン、アラニン、セリン、ロイシン、イソロイシン若しくはフェニルアラニンであり、又は488位のグルタミン酸に相当するアミノ酸がバリン、アラニン、セリン、ロイシン、イソロイシン若しくはフェニルアラニンである変異を有しており、0.9質量%のNaCl溶液中におけるルシフェリン−ルシフェラーゼ発光反応による発光強度が、NaCl非含有溶液中の50%以上である、変異型甲虫ルシフェラーゼ。【選択図】なし |
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Bibliography: | Application Number: JP20160122545 |