CRISPRseek:::findgRNAs paired gRNAs with PAM inward orientation
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@sabaparvez-21061
Last seen 4.7 years ago

I am using the CRISPRseek package to design paired gRNAs for nickase enzyme. I am interested in designing paired gRNAs in PAMin orientation. Is it possible to specify the orientation of the adjacent PAMsites in CRISPRseek such that the output yields paired gRNAs that are facing in PAMin orientation rather than PAMout orientation?

Note: In PAMin orientation the two adjacent PAMs on the sense and antisense strands face inwards towards each other (N21GG and CCN21) whereas in the PAMout orientation they face away from each other (CCN21 and N21GG)

Thank you

CRISPRseek paired gRNA • 985 views
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Julie Zhu ★ 4.3k
@julie-zhu-3596
Last seen 4 months ago
United States

Saba,

Thanks for posting the question! I will add the functionality and let you know when it is done.

Best regards,

Julie

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Thanks Dr. Zhu! I will wait for your response.

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Julie Zhu ★ 4.3k
@julie-zhu-3596
Last seen 4 months ago
United States

Saba,

Please download the newest version of CRISPRseek (Version: 1.25.2). To find paired gRNAs with PAM face inwards towards each other, please set paired.orientation = "PAMin".

To obtain the most recent dev version of CRISPRseek, please type the following command in a terminal. git clone git@git.bioconductor.org:packages/CRISPRseek Alternatively, you can type the following commands in a R/Rstudio session. BiocManager::install(version='devel') BiocManager::install("CRISPRseek")

Before installing it using the above R commands, please check the version at http://bioconductor.org/packages/devel/bioc/html/CRISPRseek.html to make sure the newest version has been propagated.

Best regards, Julie

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Thank you so much Dr. Zhu! I will give this a try.

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