EXS family protein / ERD1/XPR1/SYG1 family protein. similar to PHO1 (PHOSPHATE 1) [Arabidopsis thaliana] (TAIR:AT3G23430.1); similar to putative PHO1-like protein [Oryza sativa (japonica cultivar-group)] (GB:BAD44936.1); similar to hypothetical protein OsI_022262 [Oryza sativa (indica cultivar-group)] (GB:EAZ01030.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO42054.1); contains InterPro domain SPX, N-terminal (InterPro:IPR004331); contains InterPro domain EXS, C-terminal; (InterPro:IPR004342)