inositol-1,3,4-trisphosphate 1-phosphatase activity
Catalysis of the reaction: D-myo-inositol 1,3,4-trisphosphate + H2O = myo-inositol 3,4-bisphosphate + phosphate.
GO:0046030
inositol trisphosphate phosphatase activity
is_a
SPCC1753.04