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:
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:
[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:
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.