Incidental Mutation 'R0782:Impa1'
Institutional Source Beutler Lab
Gene Symbol Impa1
Ensembl Gene ENSMUSG00000027531
Gene Nameinositol (myo)-1(or 4)-monophosphatase 1
Synonymslithium-sensitive myo-inositol monophosphatase A1, 2900059K10Rik, 2610002K09Rik
MMRRC Submission 038962-MU
Accession Numbers
Is this an essential gene? Non essential (E-score: 0.000) question?
Stock #R0782 (G1)
Quality Score225
Status Validated
Chromosomal Location10311956-10331439 bp(-) (GRCm38)
Type of Mutationsplice site
DNA Base Change (assembly) A to T at 10322896 bp
Amino Acid Change
Ref Sequence ENSEMBL: ENSMUSP00000141735 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000065938] [ENSMUST00000118410] [ENSMUST00000128912] [ENSMUST00000191670] [ENSMUST00000192603]
Predicted Effect probably benign
Transcript: ENSMUST00000065938
SMART Domains Protein: ENSMUSP00000068174
Gene: ENSMUSG00000027531

Pfam:Inositol_P 5 271 1.5e-86 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000118410
SMART Domains Protein: ENSMUSP00000113860
Gene: ENSMUSG00000027531

Pfam:Inositol_P 5 271 7.7e-79 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000128912
SMART Domains Protein: ENSMUSP00000116088
Gene: ENSMUSG00000027531

Pfam:Inositol_P 19 90 4.4e-16 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000191670
SMART Domains Protein: ENSMUSP00000141345
Gene: ENSMUSG00000027531

Pfam:Inositol_P 5 180 4.7e-49 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000192603
SMART Domains Protein: ENSMUSP00000141735
Gene: ENSMUSG00000103392

signal peptide 1 18 N/A INTRINSIC
low complexity region 69 85 N/A INTRINSIC
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.7%
  • 10x: 97.0%
  • 20x: 93.3%
Validation Efficiency 100% (39/39)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes an enzyme that dephosphorylates myo-inositol monophosphate to generate free myo-inositol, a precursor of phosphatidylinositol, and is therefore an important modulator of intracellular signal transduction via the production of the second messengers myoinositol 1,4,5-trisphosphate and diacylglycerol. This enzyme can also use myo-inositol-1,3-diphosphate, myo-inositol-1,4-diphosphate, scyllo-inositol-phosphate, glucose-1-phosphate, glucose-6-phosphate, fructose-1-phosphate, beta-glycerophosphate, and 2'-AMP as substrates. This enzyme shows magnesium-dependent phosphatase activity and is inhibited by therapeutic concentrations of lithium. Inhibition of inositol monophosphate hydroylosis and subsequent depletion of inositol for phosphatidylinositol synthesis may explain the anti-manic and anti-depressive effects of lithium administered to treat bipolar disorder. Alternative splicing results in multiple transcript variants encoding distinct isoforms. A pseudogene of this gene is also present on chromosome 8q21.13. [provided by RefSeq, Dec 2014]
PHENOTYPE: Most mice homozygous for a knock-out allele die between E9.5 and E10.5 with surviving mice exhibiting hyperactivity, increased rearing, and increased susceptibility to pilocarpine-induced seizures. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 37 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Arhgap23 C T 11: 97,500,554 P1299L possibly damaging Het
B3glct C T 5: 149,726,810 T126M probably damaging Het
Baz1a A T 12: 54,894,488 D1492E probably damaging Het
Cdc14a A G 3: 116,322,136 I259T probably damaging Het
Cog7 C A 7: 121,943,797 A464S possibly damaging Het
Csf2rb2 C A 15: 78,286,751 K368N probably damaging Het
Cspp1 T A 1: 10,129,974 probably benign Het
Cyp2c37 A G 19: 39,993,825 H90R probably benign Het
Dcst1 A G 3: 89,357,500 F314L possibly damaging Het
Dhx36 A T 3: 62,506,714 probably benign Het
Efr3b G A 12: 3,984,686 probably benign Het
Faap100 A G 11: 120,376,704 probably null Het
Hmcn1 A G 1: 150,753,665 I947T possibly damaging Het
Ilkap C T 1: 91,378,550 R103H probably damaging Het
Kbtbd8 C T 6: 95,122,232 R164C probably damaging Het
Lactb2 T G 1: 13,647,451 N116T probably benign Het
Myh8 T A 11: 67,289,754 N605K probably benign Het
Mylk G C 16: 34,879,475 E403Q possibly damaging Het
Napa T C 7: 16,115,267 M244T probably benign Het
Nckap5 G A 1: 125,981,541 S1719F probably damaging Het
Nfe2l2 T C 2: 75,676,833 I308V probably benign Het
Olfr609 C A 7: 103,492,515 R121L probably damaging Het
Ppfia2 C T 10: 106,927,731 S1195L probably benign Het
Rasa4 A G 5: 136,104,532 K615R possibly damaging Het
Rnf216 T C 5: 143,068,892 K634E possibly damaging Het
Samd3 A G 10: 26,270,240 T388A probably damaging Het
Serping1 G A 2: 84,767,446 P364S probably damaging Het
Slc39a10 T C 1: 46,835,996 S49G probably damaging Het
Smc2 C A 4: 52,469,799 T762K probably benign Het
Smpd1 T A 7: 105,555,343 V143E possibly damaging Het
Synj2bp A T 12: 81,532,733 L16Q probably damaging Het
Tcof1 G A 18: 60,816,280 R1188W probably damaging Het
Unc80 A G 1: 66,622,581 R1722G possibly damaging Het
Vamp5 T C 6: 72,369,470 S48G probably damaging Het
Vps13d G A 4: 145,126,625 probably benign Het
Zfp292 T C 4: 34,839,382 N161S possibly damaging Het
Zfp831 A G 2: 174,646,630 T1033A probably benign Het
Other mutations in Impa1
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01777:Impa1 APN 3 10322948 missense probably damaging 1.00
IGL02411:Impa1 APN 3 10322958 missense possibly damaging 0.90
IGL02733:Impa1 APN 3 10328965 missense probably benign
IGL03183:Impa1 APN 3 10322994 missense probably damaging 1.00
lofty UTSW 3 10329004 start codon destroyed probably null 1.00
olympian UTSW 3 10315280 missense probably damaging 1.00
R0166:Impa1 UTSW 3 10328960 missense probably damaging 0.99
R1645:Impa1 UTSW 3 10328441 missense possibly damaging 0.79
R3196:Impa1 UTSW 3 10329015 splice site probably null
R3905:Impa1 UTSW 3 10316034 missense probably benign
R4953:Impa1 UTSW 3 10315280 missense probably damaging 1.00
R5495:Impa1 UTSW 3 10326170 missense probably benign 0.08
R5884:Impa1 UTSW 3 10316224 missense probably damaging 1.00
R5972:Impa1 UTSW 3 10329004 start codon destroyed probably null 1.00
R6927:Impa1 UTSW 3 10315288 missense probably benign 0.00
R7605:Impa1 UTSW 3 10324087 missense probably damaging 0.96
R7801:Impa1 UTSW 3 10321667 missense probably benign
X0054:Impa1 UTSW 3 10316100 splice site probably null
Z1177:Impa1 UTSW 3 10316074 missense probably benign 0.03
Predicted Primers PCR Primer

Sequencing Primer
Posted On2013-10-16