Adapter-like transcriptional repressor recruiting TPL/TPR coepressors to inhibit TCP transcription factors (By similarity). May be involved in leaf development. Interacts with SPL and SPEAR2. Expressed in leaves. Knock down expression of SPEAR2/TIE4 and SPEAR4/TIE3 by RNAi in a SPEAR3/TIE1 null mutant produces lines displaying epinastic leaves. Extended C-terminus.