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. Author manuscript; available in PMC: 2019 Nov 19.
Published in final edited form as: Nat Protoc. 2019 Feb 1;14(3):756–780. doi: 10.1038/s41596-018-0113-7
--trim-5 Length of trimming the 5’ of the reads, default AUTO (MAGeCK will automatically determine the trimming length).
--sgrna-len Length of the sgRNA. Default AUTO (MAGeCK will automatically determine the sgRNA length. Only use this if users turn on the “--unmapped-to-file” option.
--count-n Count sgRNAs with Ns. By default, sgRNAs containing N will be discarded.
--unmapped-to-file Save unmapped reads to file, with sgRNA lengths specified by --sgrna-len option.