摘要:
A PPR protein with high performance is provided. A PPR protein that binds to a long nucleotide sequence is provided by linking motifs in a number larger than conventionally used 7 to 14. A PPR motif is provided, of which typical examples are the followings: (A-1) a PPR motif consisting of the sequence of SEQ ID NO: 9 or 401, (C-1) a PPR motif consisting of the sequence of SEQ ID NO: 10, (G-1) a PPR motif consisting of the sequence of SEQ ID NO: 11, and (U-1) a PPR motif consisting of the sequence of SEQ ID NO: 12. These motifs are useful as PPR motifs for adenine, cytosine, guanine, and uracil in a target nucleotide sequence, respectively.
摘要:
It was found that four nuclease domain mutants have nuclease activity superior to that of a wild-type nuclease domain and are capable of enhancing genome editing efficiency in combination with various nucleic acid binding domains.
摘要:
In order to improve aggregation property of a PPR protein, the A 6 amino acid of the 1st PPR motif from the N-terminus (M 1 ) is made more hydrophilic. Further, the A 9 amino acid of M 1 is made to be a hydrophilic amino acid or glycine. The A 6 amino acid is preferably asparagine or aspartic acid, and the A 9 amino acid is preferably glutamine, glutamic acid, lysine, or glycine. Proteins containing such a PPR motif as M 1 motif may have not only improved aggregation property, but also high binding power to a target nucleic acid.
摘要:
A method for designing a protein capable of binding in an RNA base selective manner or RNA base sequence specific manner is provided. The protein of the present invention is a protein containing one or more of PPR motifs (preferably 2 to 14 PPR motifs) each consisting of a polypeptide of 30- to 38-amino acid length represented by the formula 1 (wherein Helix A is a moiety of 12-amino acid length capable of forming an α-helix structure, and is represented by the formula 2, wherein, in the formula 2, A 1 to A 12 independently represent an amino acid; X does not exist, or is a moiety of 1- to 9-amino acid length; Helix B is a moiety of 11- to 13-amino acid length capable of forming an α-helix structure; and L is a moiety of 2- to 7-amino acid length represented by the formula 3, wherein, in the formula 3, the amino acids are numbered "i" (-1), "ii" (-2), and so on from the C-terminus side, provided that L iii to L vii may not exist), and combination of three amino acids A 1 , A 4 and L ii , or combination of two amino acids A 4 , and L ii is a combination corresponding to a target RNA base or base sequence.
摘要:
[Problem to be Solved] The object of the present invention is to develop a method of regulating a target RNA. [Solution] There is provided a fusion protein comprising a functional domain which improves the protein expression level from mRNA and a PPR protein which can bind to a target mRNA in an RNA base-selective or RNA base sequence-specific manner.
摘要:
A method for converting an editing target C contained in a target RNA to U or an editing target U contained in a target RNA to C is provided. A method for editing a target RNA, which comprises applying an artificial DYW protein containing a DYW domain consisting of any one of the polypeptides a, b, c, and be mentioned below to the target RNA: a. a polypeptide having x a1 PGx a2 SWIEx a3 -x a16 HP ... Hx aa E ... Cx a17 x a18 CH ... DYW, having a sequence identity of at least 40% to the sequence of SEQ ID NO: 1, and having a C-to-U/U-to-C editing activity, b. a polypeptide having x b1 PGx b2 SWWTDx b3 -x b16 HP ... Hx bb E ... Cx b17 x b18 CH ... DYW, having a sequence identity of at least 40% to the sequence of SEQ ID NO: 2, and having a C-to-U/U-to-C editing activity, c. a polypeptide having KPAx c1 Ax c2 IEx c3 ... Hx cc E ... Cx c4 x c5 CH ... x c6 x c7 x c8 , having a sequence identity of at least 40% to the sequence of SEQ ID NO: 3, and having a C-to-U/U-to-C editing activity, and be. a polypeptide having x b1 PGx b2 SWWTDx b3 -x b16 HP ... Hx cc E ... Cx c4 x c5 CH ... Dx bc1 x bc2 , having a sequence identity of at least 40% to the sequence of SEQ ID NO: 90, and having a C-to-U/U-to-C editing activity (in the sequences, x represents an arbitrary amino acid, and ... represents an arbitrary polypeptide fragment).