Table 1.
Summary of GH3 family members in Arabidopsis and Rice
| GH3 protein | Groupa | Mutantb | Acyl acidc | Amino acidc | Refs |
| AtGH3-1 | II | ? | ? | 22 | |
| AtGH3-2 | II | ydk1 | IAA | Met, Trp | 22, 29 |
| AtGH3-3 | II | IAA | Asp, Met, Try, Trp | 22 | |
| AtGH3-4 | II | IAA | Asp, Met, Trp | 22 | |
| AtGH3-5 | II | wes1 | IAA | Glu, Asp, Met, Tyr, Trp | 14, 22, 30–34 |
| AtGH3-6 | II | dfl1 | IAA | Asp, Met, Trp | 22, 35 |
| AtGH3-7 | III | ? | ? | ||
| AtGH3-8 | III | ? | ? | ||
| AtGH3-9 | II | ? | ? | 36–37 | |
| AtGH3-10 | I | dfl2 | ? | ? | 28 |
| AtGH3-11 | I | jar1/fin219 | JA | Ile | 14, 27, 46 |
| AtGH3-12 | III | pbs3/gdg1 | benzoates | Glu, His, Leu, Met | 43–45 |
| AtGH3-13 | III | ? | ? | ||
| AtGH3-14 | III | ? | ? | ||
| AtGH3-15 | III | ? | ? | ||
| AtGH3-16 | III | ? | ? | ||
| AtGH3-17 | II | IAA | Glu, Met, Trp | 22 | |
| AtGH3-18 | III | ? | ? | ||
| AtGH3-19 | III | ? | ? | ||
| OsGH3-1 | II | ? | ? | 41 | |
| OsGH3-2 | II | ? | ? | ||
| OsGH3-3 | I | ? | ? | ||
| OsGH3-4 | II | ? | ? | ||
| OsGH3-5 | I | ? | ? | ||
| OsGH3-6 | I | ? | ? | ||
| OsGH3-7 | II | ? | ? | ||
| OsGH3-8 | II | IAA | Asp | 38–40 | |
| OsGH3-9 | II | ? | ? | ||
| OsGH3-10 | II | ? | ? | ||
| OsGH3-11 | II | ? | ? | ||
| OsGH3-12 | I | ? | ? | ||
| OsGH3-13 | II | tld1 | IAA | Glu, Asp, Phe, Leu, Ala | 42 |
b
Mutant associated with GH3 gene.
c
Major acyl acid and amino acid substrates of the GH3 protein identified by substrate screening assays. Substrates in bold have been confirmed by steady-state kinetic analysis of purified protein. Question marks indicate unknown enzymatic activity and substrate specificity.