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EG9876 C. elegans unc-119(ox819 oxTi1126) III. Show Description
oxTi1126 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + myo-2p::2xNLS::cyOFP::let-858 3'UTR + lox2272] III. Knock-in into previously modified unc-119(ox819) endogenous locus. Cas9 insertion marked with myo-2p::cyOFP (cyan-excitable Orange Fluorescent Protein), a long-Stokes-shift fluorescent protein that is spectrally separable from common green and red fluorophores. The Cas9 transgene was optimized for germline expression by including 4 large PATC-rich introns from smu-2. Lower activity than other Cas9 strains, but useful because Cas9, Cre, and unc-119 are in a single unit. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883