Probable transcription regulator that acts as a developmental regulator by promoting cell growth in response to light (By similarity). May suppress organ differentiation in the boundary region. Induced by NAC054/CUC1 and NAC098/CUC2 in shoot organ boundary cells. Accumulates at the boundaries between the apical meristems and lateral organs in embryos, seedlings, and mature plants, and at the root apical meristem and in distinct cell files surrounding this area. First observed in the shoot apex of early-heart embryos. Within the apex of the late-heart stage embryo, the signal is detected in the peripheral region but not in the central region. At the bent-cotyledon stage, accumulates in boundary cells located between the shoot apical meristem (SAM) and the cotyledon primordia. In seedlings, weakly expressed in the basal cells of the leaf primordia. During the reproductive phase, present in boundary cells between the SAM and the flower primordia, and in boundary cells between the floral meristem and sepal primordia. In developing flowers, confined to regions that surround the floral organs at the base. Belongs to the plant homeotic and developmental regulators ALOG protein family. Truncated N-terminus.