Incidental Mutation 'IGL03183:Impa1'
Institutional Source Australian Phenomics Network (link to record)
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? Non essential (E-score: 0.000) question?
Stock #IGL03183
Quality Score
Chromosomal Location10311956-10331439 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to G at 10322994 bp
Amino Acid Change Tyrosine to Histidine at position 123 (Y123H)
Ref Sequence ENSEMBL: ENSMUSP00000113860 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000065938] [ENSMUST00000118410] [ENSMUST00000128912] [ENSMUST00000191670] [ENSMUST00000192603]
Predicted Effect probably damaging
Transcript: ENSMUST00000065938
AA Change: Y123H

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000068174
Gene: ENSMUSG00000027531
AA Change: Y123H

Pfam:Inositol_P 5 271 1.5e-86 PFAM
Predicted Effect probably damaging
Transcript: ENSMUST00000118410
AA Change: Y123H

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000113860
Gene: ENSMUSG00000027531
AA Change: Y123H

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 damaging
Transcript: ENSMUST00000191670
AA Change: Y123H

PolyPhen 2 Score 0.994 (Sensitivity: 0.69; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000141345
Gene: ENSMUSG00000027531
AA Change: Y123H

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
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: 44 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Aldh6a1 A G 12: 84,436,440 probably null Het
Ano2 A T 6: 125,710,629 K32N probably benign Het
Asic1 A G 15: 99,672,017 H73R probably benign Het
B3glct A G 5: 149,754,142 D412G probably damaging Het
Baz2b T C 2: 59,903,296 I1891V probably benign Het
Cc2d2a A G 5: 43,732,379 E1278G probably damaging Het
Ccdc116 T C 16: 17,142,854 E33G probably benign Het
Celf4 T A 18: 25,537,739 Q129L probably benign Het
Celf4 G T 18: 25,537,740 Q129K probably benign Het
Col18a1 A G 10: 77,073,754 S817P probably damaging Het
Corin A G 5: 72,301,586 V940A probably damaging Het
Dlgap2 A T 8: 14,727,525 N257Y possibly damaging Het
Dnah2 C A 11: 69,458,488 V2441L possibly damaging Het
Evpl C T 11: 116,221,612 E1751K probably damaging Het
Fam35a T C 14: 34,245,186 T690A probably benign Het
Fat1 G A 8: 44,950,586 E125K probably damaging Het
Fras1 A T 5: 96,733,781 probably benign Het
Fryl G A 5: 73,076,695 Het
G3bp2 A C 5: 92,055,046 M362R possibly damaging Het
Grk5 T C 19: 61,069,336 F158S probably damaging Het
Hmbox1 G T 14: 64,887,599 Q188K probably damaging Het
Ift172 A T 5: 31,272,004 D604E probably benign Het
Igkv6-32 T A 6: 70,074,572 T5S probably benign Het
Itgb4 C T 11: 115,988,724 T612M probably damaging Het
Med12l T A 3: 59,037,555 probably null Het
Meis2 A G 2: 116,059,521 L160S probably damaging Het
Micu1 C T 10: 59,728,048 R31* probably null Het
Nlrp9a G T 7: 26,557,457 A167S probably damaging Het
Olfr1408 A G 1: 173,130,858 Y120H probably damaging Het
Olfr1425 A T 19: 12,074,028 N201K probably damaging Het
Plpp6 A G 19: 28,964,671 N224S possibly damaging Het
Sdk2 T A 11: 113,850,984 H803L probably benign Het
Slc36a1 T A 11: 55,228,191 Y331N probably damaging Het
Spata31d1c A T 13: 65,035,195 I184F possibly damaging Het
Stat3 T C 11: 100,902,756 I338V possibly damaging Het
Stk10 T A 11: 32,604,143 V610E possibly damaging Het
Syna A G 5: 134,558,290 S602P probably benign Het
Tap2 T A 17: 34,205,425 probably benign Het
Tln1 T C 4: 43,539,084 probably benign Het
Tra2b C A 16: 22,254,553 probably benign Het
Ttc7b T C 12: 100,373,709 probably null Het
Vmn2r121 G A X: 124,132,326 T378I probably benign Het
Wdr1 A T 5: 38,533,482 probably null Het
Wdr66 A G 5: 123,254,619 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
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
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
X0054:Impa1 UTSW 3 10316100 splice site probably null
Posted On2016-08-02