Fig. 1.

TPL N terminus structure and conservation. (A) AtTPL protein schematic representation. (B) Cartoon representation of AtTPL184 homodimer. LisH, CTLH, and CRA domains are colored in red, gold, and blue in one of the two monomers, respectively. (C) TBL1 (green) and AtTPL184 (blue) structure superimposition. (D) Sequence alignment of the N terminus of TPL and A. thaliana (Ath) TPR proteins. Atr, Amborella trichopoda; Osa, Oryza sativa; Mpo, Marchantia polymorpha; Ppa, Physcomitrella patens; Nae, Nothoceros aenigmaticus; Kfl, K. flaccidum. Triangle, amino acids involved in the interaction with the IAA peptide; star, amino acids involved in tetramerization; circle, N176 residue.