Fig. 1.

The protein structure of AIF. (A) The AIF protein contains a conserved NAC domain in the N-terminus, a conserved NARD domain for the repression of transcriptional activation in the end of the NAC domain, and a transmembrane domain (TM) in the C-terminus of the protein. In AIF-C, the TM was deleted. In AIF-C+SRDX, an SRDX domain that contained the 12 amino acid repressor sequence (LDLDLELRLGFA) was fused to AIF-C. In AIF-C+VP16, an activation domain, VP16-AD, which included the 11 amino acid activation sequence (DALDDFDLDML), was fused to AIF-C. (B) The conserved NARD domain identified in AIF and several other NAC-like proteins. (This figure is available in colour at JXB online.)