It looks like Biostrings function "writeFASTA" overwrites the output file at
each run.
It seems it does not support the "append" parameter.
I have to generate one big file gathering a miRNA identifier and relative
sequence followd by a variable number of dara records pertaining such a miRNA
target genes transcription.
Each record is made up of a 3'utr identifier
<hgnc_id>.<ensembl_id>.<transript_id>
followed by the relative 3'UTR sequence.
I hoped I could use writeFASTA but it does not allow me to append sequences to
the same output file.
Any suggestion is more than welcome.
Thank you in advance,
Maura
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