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. [provided by RefSeq, Jul 2008]
Function:
Phosphatase that acts on lipids with a phosphoinositol headgroup. Has phosphatase activity towards phosphatidylinositol-3-phosphate and phosphatidylinositol-3,5-bisphosphate. May also dephosphorylate proteins phosphorylated on Ser, Thr, and Tyr residues.
Subcellular Location:
Cytoplasm. Membrane.
Similarity:
Belongs to the protein-tyrosine phosphatase family.
Non-receptor class myotubularin subfamily.
Contains 1 FYVE-type zinc finger.
Contains 1 myotubularin phosphatase domain.
SWISS:
Q13615
Gene ID:
8897
Database links:
Entrez Gene: 8897 Human
Omim: 603558 Human
SwissProt: Q13615 Human
Unigene: 474536 Human
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