Nucleotide substitutions are numbered from the Est-P start codon and are relative to Est-P255S. There is also an insertion of ACATTTGAT, nucleotides 1379-1387 in Est-PS-501S, that is not present in the Est-P255S reference sequence.
Nucleotide substitution: C469T.
Nucleotide substitution: T1388G.
Isolated from: El Rio Vineyard, Acampo, California, USA population October 1991.