Abstract: A translational control method using an RNA-protein interaction motif is provided. The method comprises a step of introducing an mRNA having: a 5?UTR regulation structure comprising: (1) a cap structure at the 5? terminus, (2) a spacer positioned on the 3? side of the cap structure, and (3) one or more RNA motifs positioned on the 3? side of the spacer, which comprises an RNA-protein interaction motif-derived nucleotide sequence or a variant thereof; and a nucleotide sequence encoding a target protein gene on the 3? side of the 5?UTR regulation structure, into a cell in the presence of a protein specifically binding to the RNA motifs, wherein a translational level is decreased as the number of bases of the spacer decreases, and the translational level is decreased as the number of the RNA motifs increases.

Abstract: A translational control method using an RNA-protein interaction motif is provided. The method comprises a step of introducing an mRNA having: a 5?UTR regulation structure comprising: (1) a cap structure at the 5? terminus, (2) a spacer positioned on the 3? side of the cap structure, and (3) one or more RNA motifs positioned on the 3? side of the spacer, which comprises an RNA-protein interaction motif-derived nucleotide sequence or a variant thereof; and a nucleotide sequence encoding a target protein gene on the 3? side of the 5?UTR regulation structure, into a cell in the presence of a protein specifically binding to the RNA motifs, wherein a translational level is decreased as the number of bases of the spacer decreases, and the translational level is decreased as the number of the RNA motifs increases.

Abstract: A translational control method using an RNA-protein interaction motif is provided. The method comprises a step of introducing an mRNA having: a 5?UTR regulation structure comprising: (1) a cap structure at the 5? terminus, (2) a spacer positioned on the 3? side of the cap structure, and (3) one or more RNA motifs positioned on the 3? side of the spacer, which comprises an RNA-protein interaction motif-derived nucleotide sequence or a variant thereof; and a nucleotide sequence encoding a target protein gene on the 3? side of the 5?UTR regulation structure, into a cell in the presence of a protein specifically binding to the RNA motifs, wherein a translational level is decreased as the number of bases of the spacer decreases, and the translational level is decreased as the number of the RNA motifs increases.

Abstract: A translational control method using an RNA-protein interaction motif is provided. The method comprises a step of introducing an mRNA having: a 5?UTR regulation structure comprising: (1) a cap structure at the 5? terminus, (2) a spacer positioned on the 3? side of the cap structure, and (3) one or more RNA motifs positioned on the 3? side of the spacer, which comprises an RNA-protein interaction motif-derived nucleotide sequence or a variant thereof; and a nucleotide sequence encoding a target protein gene on the 3? side of the 5?UTR regulation structure, into a cell in the presence of a protein specifically binding to the RNA motifs, wherein a translational level is decreased as the number of bases of the spacer decreases, and the translational level is decreased as the number of the RNA motifs increases.

Abstract: An object of the present invention is to provide a translationally regulatable mRNA which has wider application and can perform specific ON-OFF regulation, an RNA-protein complex specifically bound to the mRNA, and a translational regulatory system. The present invention provides an mRNA having an RNA-protein complex interacting motif-derived nucleotide sequence 5? to the ribosome-binding site or within the 5? region of the open reading frame, and an mRNA having a nucleotide sequence complementary to an RNA-protein complex interacting motif-derived nucleotide sequence 5? to the ribosome-binding site or within the 5? region of the open reading frame.

Abstract: A translational control method using an RNA-protein interaction motif is provided. The method comprises a step of introducing an mRNA having: a 5?UTR regulation structure comprising: (1) a cap structure at the 5? terminus, (2) a spacer positioned on the 3? side of the cap structure, and (3) one or more RNA motifs positioned on the 3? side of the spacer, which comprises an RNA-protein interaction motif-derived nucleotide sequence or a variant thereof; and a nucleotide sequence encoding a target protein gene on the 3? side of the 5?UTR regulation structure, into a cell in the presence of a protein specifically binding to the RNA motifs, wherein a translational level is decreased as the number of bases of the spacer decreases, and the translational level is decreased as the number of the RNA motifs increases.

Abstract: An object of the present invention is to construct an mRNA which specifically responds to a short RNA sequence and can activate, repress, and regulate the translation of the desired gene, and to construct an artificial cell model system using a liposome comprising the mRNA and a cell-free translational system encapsulated therein. The present invention provides: an mRNA comprising a target RNA-binding site located immediately 5? to the ribosome-binding site, and a nucleotide sequence located 5? to the target RNA-binding site, the nucleotide sequence being complementary to the ribosome-binding site; an mRNA comprising a small RNA-binding site located 3? to the start codon, and a nucleotide sequence located 3? to the small RNA-binding site, the nucleotide sequence encoding a protein; and a liposome comprising any of these mRNAs encapsulated therein.

Abstract: An object of the present invention is to provide an RNAi control system using an RNA-protein interaction motif. The present invention provides an shRNA comprising: a guide strand having a sequence complementary to a target sequence; a passenger strand which forms a duplex with the guide strand; and a linker strand which links the guide strand and the passenger strand, wherein the linker strand comprises an RNP-derived protein-binding motif sequence. The present invention also provides an RNAi control system comprising: the shRNA; and an RNP-derived protein which specifically binds to a protein-binding motif sequence in the shRNA.

Abstract: An object of the present invention is to construct an mRNA which specifically responds to a short RNA sequence and can activate, repress, and regulate the translation of the desired gene, and to construct an artificial cell model system using a liposome comprising the mRNA and a cell-free translational system encapsulated therein. The present invention provides: an mRNA comprising a target RNA-binding site located immediately 5? to the ribosome-binding site, and a nucleotide sequence located 5? to the target RNA-binding site, the nucleotide sequence being complementary to the ribosome-binding site; an mRNA comprising a small RNA-binding site located 3? to the start codon, and a nucleotide sequence located 3? to the small RNA-binding site, the nucleotide sequence encoding a protein; and a liposome comprising any of these mRNAs encapsulated therein.

Abstract: An object of the present invention is to construct an mRNA which specifically responds to a short RNA sequence and can activate, repress, and regulate the translation of the desired gene, and to construct an artificial cell model system using a liposome comprising the mRNA and a cell-free translational system encapsulated therein. The present invention provides: an mRNA comprising a target RNA-binding site located immediately 5? to the ribosome-binding site, and a nucleotide sequence located 5? to the target RNA-binding site, the nucleotide sequence being complementary to the ribosome-binding site; an mRNA comprising a small RNA-binding site located 3? to the start codon, and a nucleotide sequence located 3? to the small RNA-binding site, the nucleotide sequence encoding a protein; and a liposome comprising any of these mRNAs encapsulated therein.

Abstract: An object of the present invention is to provide an RNAi control system using an RNA-protein interaction motif. The present invention provides an shRNA comprising: a guide strand having a sequence complementary to a target sequence; a passenger strand which forms a duplex with the guide strand; and a linker strand which links the guide strand and the passenger strand, wherein the linker strand comprises an RNP-derived protein-binding motif sequence. The present invention also provides an RNAi control system comprising: the shRNA; and an RNP-derived protein which specifically binds to a protein-binding motif sequence in the shRNA.

Abstract: An object of the present invention is to provide a translationally regulatable mRNA which has wider application and can perform specific ON-OFF regulation, an RNA-protein complex specifically bound to the mRNA, and a translational regulatory system. The present invention provides an mRNA having an RNA-protein complex interacting motif-derived nucleotide sequence 5? to the ribosome-binding site or within the 5? region of the open reading frame, and an mRNA having a nucleotide sequence complementary to an RNA-protein complex interacting motif-derived nucleotide sequence 5? to the ribosome-binding site or within the 5? region of the open reading frame.

Abstract: An object of the present invention is to construct an mRNA which specifically responds to a short RNA sequence and can activate, repress, and regulate the translation of the desired gene, and to construct an artificial cell model system using a liposome comprising the mRNA and a cell-free translational system encapsulated therein. The present invention provides: an mRNA comprising a target RNA-binding site located immediately 5? to the ribosome-binding site, and a nucleotide sequence located 5? to the target RNA-binding site, the nucleotide sequence being complementary to the ribosome-binding site; an mRNA comprising a small RNA-binding site located 3? to the start codon, and a nucleotide sequence located 3? to the small RNA-binding site, the nucleotide sequence encoding a protein; and a liposome comprising any of these mRNAs encapsulated therein.