This gene encodes a member of the myotubularin dual specificity protein phosphatase gene family. The encoded protein is structurally similar to myotubularin but in addition contains a FYVE domain and an N-terminal PH-GRAM domain. The protein can self-associate and also form heteromers with another myotubularin related protein. The protein binds to phosphoinositide lipids through the PH-GRAM domain, and can hydrolyze phosphatidylinositol(3)-phosphate and phosphatidylinositol(3,5)-biphosphate in vitro. The encoded protein has been observed to have a perinuclear, possibly membrane-bound, distribution in cells, but it has also been found free in the cytoplasm. Multiple transcript variants encoding different isoforms have been found for this gene.
^Laporte J, Hu LJ, Kretz C, Mandel JL, Kioschis P, Coy JF, Klauck SM, Poustka A, Dahl N (Jul 1996). "A gene mutated in X-linked myotubular myopathy defines a new putative tyrosine phosphatase family conserved in yeast". Nat Genet. 13 (2): 175–82. doi:10.1038/ng0696-175. PMID8640223.
^Laporte J, Blondeau F, Buj-Bello A, Tentler D, Kretz C, Dahl N, Mandel JL (Dec 1998). "Characterization of the myotubularin dual specificity phosphatase gene family from yeast to human". Hum Mol Genet. 7 (11): 1703–12. doi:10.1093/hmg/7.11.1703. PMID9736772.