GH33_ARATH 595 At2g23170 Indole-3-acetic acid-amido synthetase GH3.3 MTVDSALRSPMMHSPSTKDVKALRFIEEMTRNVDFVQKKVIREILSRNSDTEYLKRFGLKGFTDRKTFKTKVPVVIYDDLKPEIQRIANGDRSMILSSYPITEFLTSSGTSAGERKLMPTIDEDMDRRQLLYSLLMPVMNLYVPGLDKGKALYFLFVKTESKTPGGLPARPVLTSYYKSEQFKRRPNDPYNVYTSPNEAILCPDSSQSMYTQMLCGLLMRHEVLRLGAVFASGLLRAIGFLQTNWKELADDISTGTLSSRISDPAIKESMSKILTKPDQELADFITSVCGQDNSWEGIITKIWPNTKYLDVIVTGAMAQYIPMLEYYSGGLPMACTMYASSESYFGINLKPMCKPSEVSYTIMPNMAYFEFLPHHEVPTEKSELVELADVEVGKEYELVITTYAGLNRYRVGDILQVTGFYNSAPQFKFVRRKNVLLSIESDKTDEAELQSAVENASLLLGEQGTRVIEYTSYAETKTIPGHYVIYWELLVKDQTNPPNDEVMARCCLEMEESLNSVYRQSRVADKSIGPLEIRVVKNGTFEELMDYAISRGASINQYKVPRCVSFTPIMELLDSRVVSTHFSPALPHWSPERRR Auxin-responsive GH3-like protein 3 Catalyzes the synthesis of indole-3-acetic acid (IAA)- amino acid conjugates, providing a mechanism for the plant to cope with the presence of excess auxin. Strongly reactive with Glu, Gln, Trp, Asp, Ala, Leu, Phe, Gly, Tyr, Met, Ile and Val. Little or no product formation with His, Ser, Thr, Arg, Lys, or Cys. Also active on pyruvic and butyric acid analogs of IAA, PAA and the synthetic auxin naphthaleneacetic acid (NAA). The two chlorinated synthetic auxin herbicides 2,4-D and 3,6-dichloro-o-anisic acid (dicamba) cannot be used as substrates. T20D16.20 GH3.3