OTU identifiers in sequence labels
OTU sequences must have OTU identifiers
An OTU table is generated by the otutab
command. OTU identifiers are extracted from the
sequence labels in the search database.
OTU identifier syntax
looks for an annotation otu=xxx; in the label. If
this is found, then xxx is the OTU identifier. Otherwise, the OTU identifier
is the sequence label with all annotations removed, i.e. all characters up
to the first semi-colon (;) or the end of the label, which ever comes first.
The following labels all contain an OTU
identifier with 123.