Reverse-complements sequences in a FASTA or FASTQ file.
Output is written to -fastaout (FASTA) and/or -fastqout
(FASTQ). You cannot use -fastqout if the input is FASTQ because the quality
scores are not known.
The -label_suffix option specifies a string that is
appended to the labels in the output file(s).
usearch -fastx_revcomp reads.fastq -label_suffix _RC -fastaout