Table 1.

LxLxL Motifs in Aux/IAA and ERF Repression Domains

IAADomain I
1.TELRLGLPG
3.TELRLGLPG
4.TELRLGLPG
5.TELRLGLPG
6.TELRLGLPG
19.TELRLGLPG
16.TELRLGLPG
27.TELRLGLPG
8.TELRLGLPe
2.TELcLGLPG
14.TELcLGLPG
17.TELcLGLPG
7.TELcLGLPG
9.TELtLGLPG
15.TELtLaLPG
20.TdLRLGLsf
30.TdLRLGLsf
10.TELdLaLgl
12.sELeLGLgl
13.sELeLGLgl
29.mELdLGLsl
11.lELgLtLsl
34.idLgLsLrt
31.vnLsLsLtf
18.kkLeLkLgp
26.kkLeLrLhr
28.krLeLrLap
NtERF3.idLdLnLap
AtERF4.ldLeLnLpp
AtSUPR.qdLdLeLrl
  • Conserved Leu in the LxLxL motif are in bold. The most conserved amino acids in domain I of A. thaliana IAA proteins are in uppercase. IAA32 and IAA33, which lack a LxLxL motif, are not shown. For nomenclature of A. thaliana IAA proteins, see Liscum and Reed (2002). NtERF3, AtERF4, and AtSUPR correspond to the EAR motifs within the repression domains of N. tabacum ERF3, A. thaliana ERF4, and A. thaliana SUPERMAN, respectively.