Incidental Mutation 'R3905:Impa1'
ID474481
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
Accession Numbers
Is this an essential gene? Probably non essential (E-score: 0.144) question?
Stock #R3905 (G1)
Quality Score225
Status Not validated
Chromosome3
Chromosomal Location10311956-10331439 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to C at 10316034 bp
ZygosityHeterozygous
Amino Acid Change Threonine to Alanine at position 263 (T263A)
Ref Sequence ENSEMBL: ENSMUSP00000113860 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000065938] [ENSMUST00000118410] [ENSMUST00000191670]
Predicted Effect probably benign
Transcript: ENSMUST00000065938
SMART Domains Protein: ENSMUSP00000068174
Gene: ENSMUSG00000027531

DomainStartEndE-ValueType
Pfam:Inositol_P 5 271 1.5e-86 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000118410
AA Change: T263A

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000113860
Gene: ENSMUSG00000027531
AA Change: T263A

DomainStartEndE-ValueType
Pfam:Inositol_P 5 271 7.7e-79 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000191670
SMART Domains Protein: ENSMUSP00000141345
Gene: ENSMUSG00000027531

DomainStartEndE-ValueType
Pfam:Inositol_P 5 180 4.7e-49 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000195155
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.2%
  • 20x: 94.8%
Validation Efficiency
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: 40 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abca12 A T 1: 71,268,230 I1964N possibly damaging Het
Abca12 A G 1: 71,279,457 F1796L probably benign Het
Abca17 T A 17: 24,296,283 M821L probably benign Het
Adamts3 C A 5: 89,861,355 G150C probably damaging Het
Ap4b1 A T 3: 103,818,893 I430F possibly damaging Het
Atp1a1 T A 3: 101,590,612 E286D probably benign Het
Bard1 T C 1: 71,067,180 I429M possibly damaging Het
Bcl7c T C 7: 127,666,983 R198G possibly damaging Het
Cacna1s T A 1: 136,084,269 M483K probably damaging Het
Ccdc159 T A 9: 21,934,519 probably null Het
Cct7 A T 6: 85,466,708 I353F possibly damaging Het
Cfap57 A G 4: 118,595,839 Y556H probably damaging Het
Fat1 G C 8: 45,023,035 R1706T probably benign Het
Fn1 C T 1: 71,607,913 G1573R probably damaging Het
Gcat T C 15: 79,043,331 L324P possibly damaging Het
Hspa1a C T 17: 34,971,727 V67M probably damaging Het
Il22 C T 10: 118,205,624 R81* probably null Het
Kif13a T C 13: 46,802,690 Y609C probably damaging Het
Kmt2e A G 5: 23,501,626 N1396D probably benign Het
Lrfn1 G A 7: 28,466,869 G563R possibly damaging Het
Mark1 A C 1: 184,908,435 probably null Het
Mum1 T C 10: 80,238,316 V401A probably damaging Het
Mxd1 G T 6: 86,650,960 Q199K probably benign Het
Myo3a T A 2: 22,558,215 Y1N probably damaging Het
Nek3 T C 8: 22,133,091 E309G probably benign Het
Olfr63 T C 17: 33,268,775 F17S probably damaging Het
Otoa A T 7: 121,125,565 Q489L probably damaging Het
Oxsr1 T C 9: 119,247,112 E376G probably benign Het
Piezo1 C T 8: 122,482,143 E2494K probably damaging Het
Pkd1l3 A G 8: 109,646,879 H1349R probably benign Het
Psmd2 A G 16: 20,655,642 D316G probably benign Het
Robo4 T A 9: 37,403,505 C218* probably null Het
Rxfp2 A T 5: 150,055,985 probably null Het
Slc10a1 A G 12: 80,967,667 I93T probably damaging Het
Tarbp1 C T 8: 126,428,152 R1411Q probably damaging Het
Tbl3 C T 17: 24,702,032 D563N probably damaging Het
Tec A G 5: 72,760,362 S505P probably damaging Het
Toporsl A T 4: 52,611,750 R548* probably null Het
Vmn1r39 G A 6: 66,804,495 Q280* probably null Het
Vmn2r9 C A 5: 108,847,919 A288S 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 missense probably null 1.00
R0166:Impa1 UTSW 3 10328960 missense probably damaging 0.99
R0782:Impa1 UTSW 3 10322896 splice site probably benign
R1645:Impa1 UTSW 3 10328441 missense possibly damaging 0.79
R3196:Impa1 UTSW 3 10329015 splice site probably null
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 missense probably null 1.00
X0054:Impa1 UTSW 3 10316100 splice site probably null
Predicted Primers
Posted On2017-04-14