Inositol monophosphatase 2

NameInositol monophosphatase 2
Synonyms
  • 3.1.3.25
  • IMP 2
  • IMP.18P
  • Inositol-1(or 4)-monophosphatase 2
  • Myo-inositol monophosphatase A2
Gene NameIMPA2
OrganismHuman
Amino acid sequence
>lcl|BSEQ0001957|Inositol monophosphatase 2
MKPSGEDQAALAAGPWEECFQAAVQLALRAGQIIRKALTEEKRVSTKTSAADLVTETDHL
VEDLIISELRERFPSHRFIAEEAAASGAKCVLTHSPTWIIDPIDGTCNFVHRFPTVAVSI
GFAVRQELEFGVIYHCTEERLYTGRRGRGAFCNGQRLRVSGETDLSKALVLTEIGPKRDP
ATLKLFLSNMERLLHAKAHGVRVIGSSTLALCHLASGAADAYYQFGLHCWDLAAATVIIR
EAGGIVIDTSGGPLDLMACRVVAASTREMAMLIAQALQTINYGRDDEK
Number of residuesNone
Molecular Weight31320.525
Theoretical pI6.59
GO Classification
Functions
  • magnesium ion binding
  • protein homodimerization activity
  • inositol monophosphate 1-phosphatase activity
  • inositol monophosphate 3-phosphatase activity
  • inositol monophosphate 4-phosphatase activity
Processes
  • inositol phosphate dephosphorylation
  • signal transduction
  • inositol phosphate metabolic process
  • phosphate-containing compound metabolic process
  • small molecule metabolic process
  • phosphatidylinositol phosphorylation
  • inositol biosynthetic process
  • inositol metabolic process
Components
  • cytoplasm
  • cytosol
General FunctionProtein homodimerization activity
Specific FunctionCan use myo-inositol monophosphates, scylloinositol 1,4-diphosphate, glucose-1-phosphate, beta-glycerophosphate, and 2'-AMP as substrates. Has been implicated as the pharmacological target for lithium Li(+) action in brain.
Transmembrane Regions
GenBank Protein ID
UniProtKB IDO14732
UniProtKB Entry Name
Cellular LocationCytoplasmic
Gene sequence
>lcl|BSEQ0010690|Inositol monophosphatase 2 (IMPA2)
ATGAAGCCGAGCGGCGAGGACCAGGCGGCGCTGGCGGCCGGCCCCTGGGAGGAGTGCTTC
CAGGCGGCCGTGCAGCTGGCGCTGCGGGCAGGACAGATCATCAGAAAAGCCCTTACTGAG
GAAAAACGTGTCTCAACAAAAACATCAGCTGCAGATCTTGTGACAGAAACAGATCACCTT
GTGGAAGATTTAATTATTTCTGAGTTGCGAGAGAGGTTTCCTTCACACAGGTTCATTGCA
GAAGAGGCCGCGGCTTCTGGGGCCAAGTGTGTGCTCACCCACAGCCCGACGTGGATCATC
GACCCCATCGACGGCACCTGCAATTTTGTGCACAGATTCCCGACTGTGGCGGTTAGCATT
GGATTTGCTGTTCGACAAGAGCTTGAATTCGGAGTGATTTACCACTGCACAGAGGAGCGG
CTGTACACGGGCCGGCGGGGTCGGGGCGCCTTCTGCAATGGCCAGCGGCTCCGGGTCTCC
GGGGAGACAGATCTCTCAAAGGCCTTGGTTCTGACAGAAATTGGCCCCAAACGTGACCCT
GCGACCCTGAAGCTGTTCCTGAGTAACATGGAGCGGCTGCTGCATGCCAAGGCGCATGGG
GTCCGAGTGATTGGAAGCTCCACATTGGCACTCTGCCACCTGGCCTCAGGGGCCGCGGAT
GCCTATTACCAGTTTGGCCTGCACTGCTGGGATCTGGCGGCTGCCACAGTCATCATCAGA
GAAGCAGGCGGCATCGTGATAGACACTTCGGGTGGACCCCTCGACCTCATGGCTTGCAGA
GTGGTTGCGGCCAGCACCCGGGAGATGGCGATGCTCATAGCTCAGGCCTTACAGACGATT
AACTATGGGCGGGATGATGAGAAGTGA
GenBank Gene ID
GeneCard IDNone
GenAtlas ID
HGNC ID
Chromosome Location18
Locus18p11.2
References
  1. Yoshikawa T, Turner G, Esterling LE, Sanders AR, Detera-Wadleigh SD: A novel human myo-inositol monophosphatase gene, IMP.18p, maps to a susceptibility region for bipolar disorder. Mol Psychiatry. 1997 Sep;2(5):393-7. [9322233 ]
  2. Sjoholt G, Gulbrandsen AK, Lovlie R, Berle JO, Molven A, Steen VM: A human myo-inositol monophosphatase gene (IMPA2) localized in a putative susceptibility region for bipolar disorder on chromosome 18p11.2: genomic structure and polymorphism screening in manic-depressive patients. Mol Psychiatry. 2000 Mar;5(2):172-80. [10822345 ]
  3. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [15489334 ]
  4. Seelan RS, Parthasarathy LK, Parthasarathy RN: Lithium modulation of the human inositol monophosphatase 2 (IMPA2) promoter. Biochem Biophys Res Commun. 2004 Nov 26;324(4):1370-8. [15504365 ]
  5. Ohnishi T, Ohba H, Seo KC, Im J, Sato Y, Iwayama Y, Furuichi T, Chung SK, Yoshikawa T: Spatial expression patterns and biochemical properties distinguish a second myo-inositol monophosphatase IMPA2 from IMPA1. J Biol Chem. 2007 Jan 5;282(1):637-46. Epub 2006 Oct 26. [17068342 ]
  6. Burkard TR, Planyavsky M, Kaupe I, Breitwieser FP, Burckstummer T, Bennett KL, Superti-Furga G, Colinge J: Initial characterization of the human central proteome. BMC Syst Biol. 2011 Jan 26;5:17. doi: 10.1186/1752-0509-5-17. [21269460 ]
  7. Arai R, Ito K, Ohnishi T, Ohba H, Akasaka R, Bessho Y, Hanawa-Suetsugu K, Yoshikawa T, Shirouzu M, Yokoyama S: Crystal structure of human myo-inositol monophosphatase 2, the product of the putative susceptibility gene for bipolar disorder, schizophrenia, and febrile seizures. Proteins. 2007 May 15;67(3):732-42. [17340635 ]

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