CRIMIC CRISPR MiMIC Gene Trap Method

For genes that permit intronic tagging, we design homology arms within the 5’-most intron that can be used to tag all or most of the predicted splice isoforms. These homology arms are cloned into a donor vector such that they flank a mutagenic CRISPR MiMIC (CRIMIC) gene trap, containing a splice acceptor, stop codons, as well as a T2A-Gal4. Injection of the construct and an sgRNA targeting the intron into Cas9-expressing fly embryos induces a DNA double-strand break in the germline, which allows for integration of the CRIMIC trap by homology directed repair. Once integrated, the CRIMIC insert produces a truncated mRNA of the target gene, as well as Gal4 under the control of the endogenous gene regulatory elements. These cassettes can then be converted into protein traps using established RMCE methods.


Check Status

Use the search box below to check the nomination status of a gene. You may enter a FBgn, gene symbol, or CG.

Note: some genes may have more than one nomination.


Nominate Gene List

Before submitting your nomination, please check the MiMIC database to verify if your gene does not already have a T2A-Gal4 line or a MiMIC insertion suitable for Recombination Mediated Cassette Exchange (RMCE).

Gene List*

Use this template to upload your gene list:

We ask that you try to limit your nomination to 10 genes or less. It can be more, but the project manager may contact you for more details.

Note: FBgn is required but gene annotation (CG) and symbol can be left blank. Any rows with missing FBgns will not be nominated.

*required fields


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Internal CRIMIC Portal

For access into the internal CRIMIC database, login here.

Contact Us

If you have any questions or concerns regarding your nominations, contact Jonathan Zirin at jonathan_zirin@hms.harvard.edu.