| CPC C12N 9/22 (2013.01) [A61K 38/465 (2013.01); A61K 48/005 (2013.01); C12N 15/113 (2013.01); C12N 15/902 (2013.01); C12N 15/907 (2013.01); C12Q 1/6876 (2013.01); C12Y 301/00 (2013.01); C12N 2310/20 (2017.05)] | 30 Claims | 
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               1. A method for modifying a eukaryotic cell, comprising introducing a CRISPR-Cas system into the eukaryotic cell, wherein the CRISPR-Cas system comprises: 
            an engineered Cas9 protein comprising at least one mutation such that the Cas9 protein substantially lacks DNA cleavage activity, or a polynucleotide encoding the Cas9 protein; 
                a chimeric RNA comprising a guide sequence capable of hybridizing to a target sequence in a genomic locus of interest in the eukaryotic cell, and a modified loop comprising an insertion of an aptamer sequence into a tetraloop and/or a stem-loop 2 of the chimeric RNA, or a polynucleotide encoding the chimeric RNA; and 
                an adaptor protein fused to at least one heterologous functional domain, or a polynucleotide encoding the adaptor protein; 
                wherein the Cas9 protein forms a CRISPR complex with the chimeric RNA, wherein the adaptor protein binds to the aptamer sequence, and wherein the guide sequence direct sequence-specific binding of the CRISPR complex to the target sequence. 
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