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. 2017 Apr 7;10:29–46. doi: 10.2147/AABC.S117707

Table 3.

Substrate specificity determining residues of ACMS modules

Nonribosomal codons in
Module Streptomyces chrysomallus Streptomyces antibioticus
ACMS II FWNVGMVH (threonine) FWNVGMVH (threonine)
ACMS II AYFWGVTF (isoleucine) AYWWGVTF (valine)
ACMS III VQFAAHVV (proline) VQFAAHVV (proline)
ACMS III ILQLGLIW (glycine) ILQLGLIW (glycine)
ACMS III AYWWGVTF (valine) AYWWGVTF (valine)

Abbreviation: ACMS, actinomycin synthetase.