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SPX2 | SPX domain-containing protein 2; May inhibit PHR1 DNA-binding activity in a Pi-dependent manner. (287 aa) | ||||
SPX3 | SPX domain-containing protein 3; Plays a positive role in plant adaptation to phosphate starvation and exerts negative feedback regulation of SPX1. (245 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) | ||||
SPX4 | SPX domain-containing protein 4. (318 aa) |