Protein: Multiple inositol polyphosphate phosphatase 1 (Q9Z2L6)
Organism: Mus musculus (Mouse)
Function: Multiple inositol polyphosphate phosphatase that hydrolyzes 1D-myo-inositol 1,3,4,5,6-pentakisphosphate (InsP5[2OH]) and 1D-myo- inositol hexakisphosphate (InsP6) to a range of less phosphorylated inositol phosphates. This regulates the availability of these various small molecule second messengers and metal chelators which control many aspects of cell physiology. Has a weak in vitro activity towards 1D-myo-inositol 1,4,5-trisphosphate which is unlikely to be physiologically relevant. By regulating intracellular inositol polyphosphates pools, which act as metal chelators, it may control the availability of intracellular calcium and iron, which are important for proper neuronal development and homeostasis. May have a dual substrate specificity, and function as a 2,3-bisphosphoglycerate 3-phosphatase hydrolyzing 2,3-bisphosphoglycerate to 2-phosphoglycerate. 2,3-bisphosphoglycerate (BPG) is formed as part of the Rapoport-Luebering glycolytic bypass and is a regulator of systemic oxygen homeostasis as the major allosteric effector of hemoglobin (By similarity)
Subcellular location: Endoplasmic reticulum lumen . Secreted. Cell membrane. Note=Also associated with the plasma membrane in erythrocytes
InterPro domains:
- IPR000560: Histidine phosphatase superfamily, clade-2 (family) [82-433]
- IPR016274: Histidine acid phosphatase, eukaryotic (family) [17-477]
- IPR029033: Histidine phosphatase superfamily (homologous_superfamily) [41-475]
Sequence:
MLRGARSHLPASVAPAAVLAAALLSSFARCSLPGRGDPVASVLSPYFGTKTRYEDANPWLLVDPVAPRRDPELLAGTCTPVQLVALIRHGTRYPTTKQIRKLKQLQGLLQTRESRDGGSQVAAALAEWPLWYGDWMDGQLVEKGRQDMRQLALRLAALFPDLFSRENYDRLRLITSSKHRCVDSSAAFLQGLWQHYHPGLPPPDVSDMECGPPRINDKLMRFFDHCEKFLTDVERNETALYHVEAFKTGPEMQKVLKKVAATLQVPMNSLNADLIQVAFFTCSFDLAIKGVHSPWCDVFDVDDARVLEYLNDLKQYWKRSYGYTINSRSSCNLFQDIFLHLDKAVEQKQRSQPVSSPVILQFGHAETLLPLLSLMGYFKDKEPLTAYNFEEQVNRKFRSGHIVPYASNLIFVLYHCDNAQSPEEQFQIQLLLNEKVLPLAHSQRPVGLYEELKTHYRDILQSCQTSKECSPPKANITSDEL
Predicted GO terms:
Molecular Function (MF): GO:0003674 (molecular function), GO:0003824 (catalytic activity), GO:0016787 (hydrolase activity), GO:0016788 (hydrolase activity, acting on ester bonds), GO:0042578 (phosphoric ester hydrolase activity), GO:0016791 (phosphatase activity), GO:0052745 (inositol phosphate phosphatase activity)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0044237 (cellular metabolic process), GO:0071704 (organic substance metabolic process), GO:0044281 (small molecule metabolic process), GO:1901615 (organic hydroxy compound metabolic process), GO:0006066 (alcohol metabolic process), GO:0006082 (organic acid metabolic process), GO:0019637 (organophosphate metabolic process), GO:0006793 (phosphorus metabolic process), GO:0043647 (inositol phosphate metabolic process), GO:0006797 (polyphosphate metabolic process), GO:0006796 (phosphate-containing compound metabolic process), GO:0043436 (oxoacid metabolic process), GO:0019751 (polyol metabolic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0005737 (cytoplasm), GO:0031974 (membrane-enclosed lumen), GO:0012505 (endomembrane system), GO:0043229 (intracellular organelle), GO:0043233 (organelle lumen), GO:0005783 (endoplasmic reticulum), GO:0043227 (membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle), GO:0070013 (intracellular organelle lumen), GO:0005788 (endoplasmic reticulum lumen)