Leafy

LEAFY (abbreviated LFY) is a plant gene that causes groups of undifferentiated cells called meristems to develop into flowers instead of leaves with associated shoots.
"LEAFY" is involved in floral meristem identity.
"LEAFY" encodes a plant-specific transcription factor, is found in all land plants and in charophytes and one of its exons have been used extensively in phylogenetic work on spermatophytes. When the gene is overexpressed, the plant is less sensitive to environmental signals and flowers earlier.
The LEAFY protein has two conserved domains: the DNA binding domain, a Helix-Turn-Helix motif buried inside a unique 7-helix fold and a Sterile Alpha Motif. It binds DNA as a dimer and its binding site has been identified both in vivo and in vitro.