USEARCH manual > size annotation
size annotation
 
Size annotations are used to indicate cluster sizes and to indicate amplicon abundances for uchime_denovo.

A size annotation is specified as a size=N field in the sequence label. It may appear anywhere in the label. It must be delimited by semi-colons, which may optionally be omitted at the start or end of the sequence label. The following labels have valid size annotations:

>KR08766;size=1;

>KR08766;size=2

>size=3;DRMEL_GTASE

>;size=4;DRMEL_GTASE

>SomeGene;size=5;more annotation