Hello > Can mira handle introns ? So for example if two parts of a read match well to > a contig but are separated by a gap of more then 100 bps would mira handle > this ? > ehm... I really don't think MIRA would be the tool to use for what essentially is a gapped alignment... A local alignment (with gaps) tool such as BLAST, or better FASTA, would be necessary. You can then use % identity to filter positives (two contigs from same locus) vs. negatives (two contigs sharing the same protein domain)...