In the endoplasmic reticulum (ER) lumen, multiple inositol polyphosphate phosphatase 1 (MINPP1) dephosphorylates inositol 1,3,4,5-tetrakisphosphate (I(1,3,4,5)P4) to inositol 1,4,5-trisphosphate (I(1,4,5)P3) (Caffrey et al. 1999, Chi et al. 1999).
Chi, H, Reynolds, PR, O'keefe, RJ, Romano, PR, Rosier, RN, Wang, J, Tiller, GE, Dasouki, MJ, Puzas, JE
Hidaka, K, Matsuda, M, Caffrey, JJ, Hirata, M, Shears, SB
inositol-1,3,4,5-tetrakisphosphate 3-phosphatase activity of MINPP1 [endoplasmic reticulum lumen]
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