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I have done an alignment and used the -H option to dump the multiple hits as well as the -u option to dump the reads that do not map. However, after the alignment, I was interested in getting the numbers of hits in each category (# unique mapping reads, # reads that map to multiple places, and # reads that do not map). I converted the 'map' file to a 'txt' file and counted the number of lines (I got 8,335,894) and then I counted the lines in the non-mapping file (I got 4,575,039). However, this totals to the total number of reads that I started with (12,910,933)! What goes in the multi mapping file? I unzipped it, but cannot discern the format at all. Do the reads that map to multiple positions also go on the 'map' file?
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The field of epigenetics has traditionally concentrated more on DNA and how changes like methylation and phosphorylation of histones impact gene expression and regulation. However, our increased understanding of RNA modifications and their importance in cellular processes has led to a rise in epitranscriptomics research. “Epitranscriptomics brings together the concepts of epigenetics and gene expression,” explained Adrien Leger, PhD, Principal Research Scientist...04-22-2024, 07:01 AM -
Proteins are often described as the workhorses of the cell, and identifying their sequences is key to understanding their role in biological processes and disease. Currently, the most common technique used to determine protein sequences is mass spectrometry. While still a valuable tool, mass spectrometry faces several limitations and requires a highly experienced scientist familiar with the equipment to operate it. Additionally, other proteomic methods, like affinity assays, are constrained...04-04-2024, 04:25 PM