Transcription factors that bind specifically to the 5'-CATGTG-3' motif. Dimer. Interacts with RHA2A, RHA2B or RHG1A, but not with RHA3A or RHA3B. Expressed in stems, flowers, cauline leaves and rosettes. Induced by drought, high salinity and abscisic acid (ABA). Slightly up-regulated by jasmonic acid. Not induced by cold treatment. The NAC domain includes a DNA-binding domain and a dimerization domain.