Your Input: | |||||
SPX2 | SPX domain-containing protein 2; May inhibit PHR1 DNA-binding activity in a Pi-dependent manner. (287 aa) | ||||
SPX1 | SPX domain-containing protein 1; Plays a positive role in plant adaptation to phosphate starvation. Inhibits PHR1 DNA-binding activity in a Pi-dependent manner. (256 aa) | ||||
PHR1 | Protein PHOSPHATE STARVATION RESPONSE 1; Transcription factor involved in phosphate starvation signaling. Binds as a dimer to P1BS, an imperfect palindromic sequence 5'-GNATATNC-3', to promote the expression of inorganic phosphate (Pi) starvation- responsive genes. SPX1 is a competitive inhibitor of this DNA-binding. PHR1 binding to its targets is low Pi-dependent. Regulates the expression of miR399. Regulates the expression of IPS1 (At3g09922), a non-coding RNA that mimics the target of miR399 to block the cleavage of PHO2 under Pi-deficient conditions. Regulates lipid remodeling and [...] (409 aa) |