Questions tagged [rna]

Use this tag to refer questions that are related to rna sequence.

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0answers
116 views

How to create a SAF file for virus sequence?

I am trying to create a SAF file for the virus sequence. I can download .gff3 and .gb format for the virus gene sequence but they are not supported by featureCounts. I need to create my own SAF. I ...
4
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3answers
371 views

Expression of a gene in different groups

I would like to check the expression of a gene in different groups like Disease vs Normal samples. I want to make a plot out of that to check whether it is significant or not. From this paper lncRNA ...
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1answer
213 views

How to get rid of the temp files while using "featureCounts" for extracting readcounts from bam files?

I used this command for extracting read counts for almost 60 samples using featureCounts. ...
3
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1answer
2k views

Strange per sequence GC content results

I would be grateful if someone could take a quick look at these FASTQC results. This is rna-seq paired-end data. From the FASTQC manual, an unusual distribution seems to be suggestive of contamination ...
1
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2answers
593 views

What could be the reason for the samples not clustering?

I'm performing RNA-seq analysis. I have used Hisat2 for aligning reads to the genome and stringtie for quantification and extracted read count information directly from the files generated by ...
3
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4answers
588 views

Basic questions about GSEA

I'm currently learning about Gene Set Enrichment Analysis (GSEA) in the hopes of using it in my analysis of differentially expressed genes, and I just had a few questions about the program, ...
4
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1answer
128 views

Why is ribosomal RNA difficult to remove even with Poly(A) selection?

In this answer (actually in a comment), it is stated that: As you've noticed from your own analysis, the ribosomal genes have quite variable expression across cells. They're expressed everywhere, ...
1
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1answer
179 views

Optimal design for an RNA-seq experiment with ERCC RNA Spike-In Control Mixes

I am planning an experiment on gene expression. I have 6 conditions and 3 replicates in each condition. I would like to use ERCC spike-in mixes for quality check: lower limit of detection, dynamic ...
1
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1answer
389 views

Alignment QC differences between HISAT2 and Qualimap

I used hisat2 for aligning reads to to the genome. I have an alignment summary for sample1 as follows: ...
1
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0answers
54 views

NPDock - service unavailable [closed]

NPDock service http://genesilico.pl/NPDock/ is unavailable, at least that's the message that shows after you try to submit a job. It's been like this for the last few weeks. Contact email address ...
1
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2answers
4k views

How to filter ribosomal RNA from scRNA-seq data

I want to filter out ribosomal RNA from scRNA-seq data (downloaded from here). Is there a list of known ribosomal RNA? The only solution I found is SortMeRNA, however it works with raw sequencing ...
5
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1answer
79 views

How to compute the chance of failing to detect a gene given the detection limit of a protocol

In Shapiro et al., when discussing about loss of molecules as source of error in single-cell sequencing, it is written that: Another source of error is losses, which can be severe. The detection ...
6
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2answers
241 views

Estimate the length of poly-A tails from randomly-primed RNAseq data

So a poly-A tail is a long chain of adenine nucleotides that is added to a messenger RNA (mRNA) molecule during RNA processing to increase the stability of the molecule. For my project, I would like ...
2
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1answer
40 views

Simple Affy Differential Expression

I think I have a fairly easy-to-solve problem. I have an expression table generated from an Affy set. It has one row of gene names (already symbols) and then 180 sample rows. 181 rows total. So I ...
5
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1answer
73 views

How can I dock a protein to a nucleic acid?

I have a protein of interest and I would like to now how it interacts with RNA. I have structures of both molecules. What tool can I use?
10
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3answers
770 views

How to extract RNA sequence and secondary structure restrains from a PDB file

I'm trying to find a programmatic way to automatically extract the following information from a PDB file: RNA sequence Secondary structure restraints in bracket format, e.g. ...

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