I'm working with some reads in tabular format and I wish to select those who start with either one of these strings:
CTACAGGTGGTCAAGTATTTATGGT or TACAGGTGGTCAAGTATTTATGGT
The same sequence is present in other reads that I wish to discard, but in these latest they're not in the beginning of the string.
I used the "Filter and Sort"/"Select" function, matching this string
but I was unsuccessful. Any suggestion?