Inositol 5-phosphatase which may be involved in distinct membrane trafficking and signal transduction pathways. May mediate the inhibitory effect of Rac1 on endocytosis.
Inositol 5-phosphatase which may be involved in distinct membrane trafficking and signal transduction pathways. May mediate the inhibitory effect of Rac1 on endocytosis.
Inositol 5-phosphatase which may be involved in distinct membrane trafficking and signal transduction pathways. May mediate the inhibitory effect of Rac1 on endocytosis.
Dephosphorylates a number of phosphatidylinositols (PIs) like phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P2), but also phosphatidylinositol 3-phosphate (PtdIns(3)P), phosphatidylinositol 4-phosphate (PtdIns(4)P), and phosphatidylinositol 3,5-bisphosphate (PtdIns(3,5)P2). Controls the cellular levels and subcellular distribution of phosphatidylinositol 3-phosphate and phosphatidylinositol 4,5-bisphosphate. Specifically functions within the early endocytic pathway and actin organization.
Score = 153 bits (389), Expect = 8e-48
Identities = 51/100 (51%), Positives = 68/100 (68%), Gaps = 3/100 (3%)
Query: 2 LHIHLLRFSIDPSPWLLKIMCGSIEIRTVYVGH--RQARAVIISRLSCERAGTRFNVRGV 59
L L+ F D S WLL ++ G +E RT+ V ++ +ISR S +RAGTR+N RG+
Sbjct: 113 LLKPLIDFRSDLSDWLLPLIQGFVEQRTISVNGEGKKVTLTLISRRSRKRAGTRYNRRGI 172
Query: 60 NDDGHVANFVETEQVLFLDDE-VTSYVQTRGSVPLFWEQP 98
+DDG+VANFVETEQ++ D + S+VQ RGSVPLFWEQ
Sbjct: 173 DDDGNVANFVETEQIVSDDSGRIFSFVQIRGSVPLFWEQD 212
This Pfam family represents a protein domain which shows homology to the yeast protein SacI. The SacI homology domain is most notably found at the amino terminal of the inositol 5'-phosphatase synaptojanin. Length = 298
A major recycling pathway involves clathrin-mediated endocytosis at endocytic zones located around sites of release. Different 'accessory' proteins linked to this pathway have been shown to alter the shape and composition of lipid membranes, to modify membrane-coat protein interactions, and to influence actin polymerisation. These include the GTPase dynamin, the lysophosphatidic acid acyl transferase endophilin, and the phosphoinositide phosphatase synaptojanin []. The recessive suppressor of secretory defect in yeast Golgi and yeast actin function belongs to this family. This protein may be involved in the coordination of the activities of the secretory pathway and the actin cytoskeleton. Human synaptojanin which may be localised on coated endocytic intermediates in nerve terminals also belongs to this family.; GO: 0042578 phosphoric ester hydrolase activity; PDB: 3LWT_X.