Incidental Mutation 'R7801:Impa1'
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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
Accession Numbers
Is this an essential gene? Essential (E-score: 1.000) question?
Stock #R7801 (G1)
Quality Score225.009
Status Validated
Chromosomal Location10311956-10331439 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to C at 10321667 bp
Amino Acid Change Threonine to Alanine at position 171 (T171A)
Ref Sequence ENSEMBL: ENSMUSP00000068174 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000065938] [ENSMUST00000118410] [ENSMUST00000128912] [ENSMUST00000191670] [ENSMUST00000192603]
Predicted Effect probably benign
Transcript: ENSMUST00000065938
AA Change: T171A

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000068174
Gene: ENSMUSG00000027531
AA Change: T171A

Pfam:Inositol_P 5 271 1.5e-86 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000118410
AA Change: T171A

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000113860
Gene: ENSMUSG00000027531
AA Change: T171A

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: 100.0%
  • 3x: 99.9%
  • 10x: 99.7%
  • 20x: 98.9%
Validation Efficiency 100% (47/47)
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: 46 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Agap1 A G 1: 89,630,485 Y165C probably damaging Het
Agbl3 A T 6: 34,839,365 T742S probably benign Het
Arhgef10l T C 4: 140,544,267 T651A probably benign Het
Arsb T A 13: 93,862,327 I381N probably damaging Het
Blzf1 A G 1: 164,295,909 V283A probably benign Het
C130060K24Rik T A 6: 65,441,217 V123D probably damaging Het
Cadps C T 14: 12,489,476 probably null Het
Casz1 A T 4: 148,938,249 T591S probably damaging Het
Ccne2 T C 4: 11,194,079 probably null Het
Chst9 T C 18: 15,452,277 T410A probably benign Het
Ciart G A 3: 95,881,344 P61L probably damaging Het
Fam234a T C 17: 26,218,198 D169G probably benign Het
Fat1 C T 8: 45,042,223 P4116L probably damaging Het
Fbxo21 G T 5: 117,986,124 A166S probably damaging Het
Gbf1 A G 19: 46,272,643 I1216V probably benign Het
Gper1 G A 5: 139,426,688 A263T probably benign Het
Hdlbp G T 1: 93,430,307 probably null Het
Ighg3 A T 12: 113,359,816 L280Q Het
Ints7 T A 1: 191,615,747 Y744N possibly damaging Het
Irgc1 G T 7: 24,432,534 A286D probably damaging Het
Kif18a T C 2: 109,287,845 S2P probably damaging Het
Macf1 A T 4: 123,408,271 W813R probably damaging Het
Mapkbp1 T G 2: 120,012,073 H157Q probably damaging Het
Mfsd4b2 T A 10: 39,923,781 M42L probably benign Het
Mon2 A G 10: 123,059,186 probably null Het
Myrfl T A 10: 116,848,335 H161L probably benign Het
Olfr171 T C 16: 19,624,623 H159R probably damaging Het
Olfr832 A C 9: 18,945,259 S204R probably damaging Het
Phlpp2 T G 8: 109,925,842 V606G possibly damaging Het
Psmb5 T C 14: 54,616,755 T89A probably benign Het
Ptpn9 A G 9: 57,061,013 T546A probably benign Het
Rabep2 A G 7: 126,438,412 M146V possibly damaging Het
Rptn G A 3: 93,398,224 E955K possibly damaging Het
Samd3 G T 10: 26,263,872 V301F possibly damaging Het
Sh2b1 C A 7: 126,471,292 C380F probably benign Het
Shank1 A G 7: 44,351,598 M914V unknown Het
Sox2 G A 3: 34,650,642 R76H probably damaging Het
Stat5a T C 11: 100,880,317 F574S probably damaging Het
Tbx5 A G 5: 119,836,999 E29G probably benign Het
Trpm5 A C 7: 143,085,241 D264E probably damaging Het
Zfp442 T C 2: 150,409,719 S88G probably benign Het
Zfp62 T A 11: 49,217,328 F749I possibly damaging Het
Zfp677 T A 17: 21,398,015 S445T probably damaging Het
Zfp979 A C 4: 147,613,978 N91K probably damaging Het
Zfyve9 A G 4: 108,684,995 V209A possibly damaging Het
Zic4 G T 9: 91,384,244 A314S 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
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
R7605:Impa1 UTSW 3 10324087 missense probably damaging 0.96
R8086:Impa1 UTSW 3 10322928 missense probably benign 0.02
R8190:Impa1 UTSW 3 10321628 missense possibly damaging 0.48
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 On2019-11-26