RepeatMasker error
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2.4 years ago
PK ▴ 130

Hi all,

I have RNA Seq data, three replicates each and paired end (WT vs KO). I want to quantify the repetitive elements. I gone through several papers and blogs to know about Repeat Masker.

This is my command

RepeatMasker -s -nolow -species human -dir outout/dire -a -inv -lcambig -small -source -html -gff KO_1.fastq

This is the error i got it back.

RepeatMasker quit because the file KO_1.fastq only contains ambiguous bases, if any.

First of all i don't know how to supply the paired end data to the repeatmasker. Second, i could not comprehend the error. So can you please some one help me with this.

repeatmasking transciptome RNA-seq • 1.9k views
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KO_1.fastq

can RepeatMasker read fastq file (?)

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  RepeatMasker [-options] <seqfiles(s) in fasta format>

This is the SYNOPSIS of Repeat masker. Am i wrong?

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... yeah .... fasta , ..... not fastq

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Okay Great Thanks, Do you think other parameters are fine?

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 ¯\_(ツ)_/¯
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Also I have one more question. How do i supply paired end data.

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with ... "paired-end data"... that only means FASTQ... what are you exactly trying to do with repeatmasker ?...

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My hypothesis is that my protein of interest is binding to Repetitive elements. So, I knock out the protein and prepared the library. So I have three replicates of WT and KO. I want to quantify is there any difference between WT and KO samples. Do you understand? If not please ask me. I can explain

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Just use the first read in the pair. I've done this before and it works just fine.

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Oh Okay, Thanks. My idea is get it done Repeat Masker for WT vs KO and directly compare to find the difference. or What else would you suggest to find the difference.

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That's right, RepeatMasker will give you the % sequences that match each class of repeats. If there are differences, they should be obvious.

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