||automatically generated one-letter abbreviated amino acid sequence derived from either the universal genetic code or the
table as specified in /transl_table and as determined by an
exception in the /transl_except qualifier
IUPAC one-letter amino acid abbreviation, "X" is to be used
for AA exceptions.
||to be used with CDS feature only; this is a mandatory qualifier in the CDS feature key except where /pseudogene="TYPE" or /pseudo
is shown; see /transl_table for definition and location of genetic