TWGFD

Welcome to B3 !

B3 transcription factors (TFs), which contain at least one B3 DNA-binding domain, constitute one of the plant-specific superfamilies. The B3 domain was initially named according to its position in the third basic region of VIVIPAROUS1 (VP1) from maize. The conserved B3 domain comprises approximately 110 amino acid residues for DNA recognition, consisting of seven β-barrels and two short α-helices. According to domain structure and phylogenetic analysis, the B3 superfamily is divided into four major families, namely the LAV (LEAFY COTYLEDON2-ABSCISIC ACID INSENSITIVE3-VAL), RAV (RELATED TO ABI3/VP1), ARF (AUXIN RESPONSE FACTOR) and REM (REPRODUCTIVE MERISTEM) families. It is reported that B3 TFs from distinct families regulate and control different aspects of plant growth and development.