Incidental Mutation 'R4395:Grm8'
ID 325435
Institutional Source Beutler Lab
Gene Symbol Grm8
Ensembl Gene ENSMUSG00000024211
Gene Name glutamate receptor, metabotropic 8
Synonyms mGluR8, Gprc1h
MMRRC Submission 041684-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R4395 (G1)
Quality Score 225
Status Not validated
Chromosome 6
Chromosomal Location 27275119-28135178 bp(-) (GRCm38)
Type of Mutation missense
DNA Base Change (assembly) T to A at 27429432 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Phenylalanine at position 488 (I488F)
Ref Sequence ENSEMBL: ENSMUSP00000110979 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000090512] [ENSMUST00000115323] [ENSMUST00000115324]
AlphaFold P47743
Predicted Effect probably damaging
Transcript: ENSMUST00000090512
AA Change: I488F

PolyPhen 2 Score 0.981 (Sensitivity: 0.75; Specificity: 0.96)
SMART Domains Protein: ENSMUSP00000087998
Gene: ENSMUSG00000024211
AA Change: I488F

DomainStartEndE-ValueType
Pfam:ANF_receptor 74 478 9.6e-102 PFAM
Pfam:Peripla_BP_6 141 375 1.3e-9 PFAM
Pfam:NCD3G 512 562 5e-17 PFAM
Pfam:7tm_3 593 841 4.7e-88 PFAM
low complexity region 887 905 N/A INTRINSIC
Predicted Effect probably damaging
Transcript: ENSMUST00000115323
AA Change: I488F

PolyPhen 2 Score 0.981 (Sensitivity: 0.75; Specificity: 0.96)
SMART Domains Protein: ENSMUSP00000110978
Gene: ENSMUSG00000024211
AA Change: I488F

DomainStartEndE-ValueType
Pfam:ANF_receptor 74 478 3.3e-107 PFAM
Pfam:NCD3G 512 562 9e-14 PFAM
Pfam:7tm_3 595 840 6.8e-58 PFAM
Predicted Effect probably damaging
Transcript: ENSMUST00000115324
AA Change: I488F

PolyPhen 2 Score 0.981 (Sensitivity: 0.75; Specificity: 0.96)
SMART Domains Protein: ENSMUSP00000110979
Gene: ENSMUSG00000024211
AA Change: I488F

DomainStartEndE-ValueType
Pfam:ANF_receptor 74 478 2.1e-101 PFAM
Pfam:Peripla_BP_6 141 375 9.2e-10 PFAM
Pfam:NCD3G 512 562 2.8e-16 PFAM
Pfam:7tm_3 593 841 2.4e-87 PFAM
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.1%
  • 20x: 94.8%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] L-glutamate is the major excitatory neurotransmitter in the central nervous system and activates both ionotropic and metabotropic glutamate receptors. Glutamatergic neurotransmission is involved in most aspects of normal brain function and can be perturbed in many neuropathologic conditions. The metabotropic glutamate receptors are a family of G protein-coupled receptors, that have been divided into 3 groups on the basis of sequence homology, putative signal transduction mechanisms, and pharmacologic properties. Group I includes GRM1 and GRM5 and these receptors have been shown to activate phospholipase C. Group II includes GRM2 and GRM3 while Group III includes GRM4, GRM6, GRM7 and GRM8. Group II and III receptors are linked to the inhibition of the cyclic AMP cascade but differ in their agonist selectivities. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]
PHENOTYPE: Mice homozygous for a knock-out allele are overweight and mildly insulin resistant, and display increased anxiety-related responses and reduced exploration in a new environment. Mice homozygous for a different knock-out allele exhibit altered excitatory responses in the dentate gyrus. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 42 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Acnat1 A G 4: 49,447,679 Y283H probably benign Het
Adamtsl5 A G 10: 80,344,902 C109R probably damaging Het
Adgrg4 T G X: 56,932,343 L2193V probably damaging Het
Alpk3 C T 7: 81,094,955 S1266F probably damaging Het
Arfgef3 A G 10: 18,597,709 L1614P probably damaging Het
Atm T C 9: 53,465,227 R2038G probably benign Het
Bahd1 G A 2: 118,922,523 R757H probably damaging Het
Capza2 T C 6: 17,656,450 probably null Het
Cfap43 T C 19: 47,751,913 T1274A probably benign Het
Chil4 G A 3: 106,203,727 P284S possibly damaging Het
Cisd3 A G 11: 97,688,386 Y115C probably damaging Het
Crebl2 A G 6: 134,849,245 E53G probably damaging Het
Ech1 T C 7: 28,826,246 S107P probably damaging Het
Fam3b C A 16: 97,481,786 probably null Het
Fat1 T A 8: 44,952,346 N711K probably damaging Het
Gm5724 T C 6: 141,712,118 I565V probably benign Het
Hmga2 C T 10: 120,476,051 G5S probably damaging Het
Homer3 G A 8: 70,290,143 probably null Het
Ifit3b G T 19: 34,612,551 E376* probably null Het
Ints5 A G 19: 8,896,444 E589G probably damaging Het
Iqsec2 C T X: 152,209,053 T562I probably damaging Het
Lamc3 A G 2: 31,931,952 E1304G probably benign Het
Ltv1 T C 10: 13,190,579 Y101C probably benign Het
Maf1 T C 15: 76,352,157 probably benign Het
Map3k13 A T 16: 21,898,571 K185N possibly damaging Het
Mtus2 A T 5: 148,076,622 Q75L probably benign Het
Nod2 T A 8: 88,664,391 F427Y probably damaging Het
Olfr1496 A T 19: 13,780,911 I100F probably benign Het
Olfr470 A G 7: 107,845,262 L157P probably damaging Het
Pik3cg T C 12: 32,204,092 D632G probably damaging Het
Plekhs1 A G 19: 56,479,894 D298G probably benign Het
Rbm34 T C 8: 126,949,381 T375A probably benign Het
Slc4a7 C T 14: 14,765,665 T549I probably damaging Het
Soga3 T C 10: 29,147,355 S233P probably benign Het
Stk17b A G 1: 53,764,115 I47T probably damaging Het
Tenm2 C T 11: 36,024,624 V2028I probably benign Het
Tle4 A T 19: 14,517,938 H142Q probably benign Het
Tns2 C T 15: 102,108,934 R281C probably damaging Het
Tnxb C T 17: 34,678,662 Q804* probably null Het
Trpm2 T C 10: 77,929,219 I983V probably benign Het
Ttll8 C T 15: 88,915,580 A553T possibly damaging Het
Ubxn11 G T 4: 134,116,120 E171D possibly damaging Het
Other mutations in Grm8
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01310:Grm8 APN 6 27363801 missense probably damaging 1.00
IGL01412:Grm8 APN 6 27762461 missense probably damaging 1.00
IGL02329:Grm8 APN 6 27363116 missense probably damaging 1.00
IGL02342:Grm8 APN 6 27363804 missense probably benign 0.00
IGL02584:Grm8 APN 6 27762439 missense probably benign 0.35
IGL03040:Grm8 APN 6 28126123 start codon destroyed probably null 0.01
IGL03112:Grm8 APN 6 27363263 missense probably damaging 1.00
IGL03139:Grm8 APN 6 27618650 missense probably damaging 1.00
IGL03287:Grm8 APN 6 27760255 missense possibly damaging 0.86
R0137:Grm8 UTSW 6 27762390 missense probably damaging 0.99
R0266:Grm8 UTSW 6 27285896 missense probably damaging 1.00
R0347:Grm8 UTSW 6 27981222 missense probably benign 0.37
R0580:Grm8 UTSW 6 27761371 splice site probably benign
R0698:Grm8 UTSW 6 27363914 missense probably damaging 1.00
R0833:Grm8 UTSW 6 27363179 missense probably damaging 1.00
R1301:Grm8 UTSW 6 27981201 missense possibly damaging 0.94
R1323:Grm8 UTSW 6 28125974 missense probably damaging 1.00
R1323:Grm8 UTSW 6 28125974 missense probably damaging 1.00
R1471:Grm8 UTSW 6 27363309 missense possibly damaging 0.79
R1554:Grm8 UTSW 6 28125853 missense probably benign 0.01
R1638:Grm8 UTSW 6 28125883 nonsense probably null
R1763:Grm8 UTSW 6 27285867 missense possibly damaging 0.79
R1899:Grm8 UTSW 6 28125895 missense probably damaging 1.00
R1902:Grm8 UTSW 6 27429482 missense probably damaging 1.00
R1916:Grm8 UTSW 6 27363584 missense probably benign 0.01
R2257:Grm8 UTSW 6 27760225 missense probably damaging 0.98
R2351:Grm8 UTSW 6 28126119 missense possibly damaging 0.66
R2396:Grm8 UTSW 6 27761242 missense probably damaging 0.98
R3801:Grm8 UTSW 6 28125636 missense possibly damaging 0.95
R3802:Grm8 UTSW 6 28125636 missense possibly damaging 0.95
R3803:Grm8 UTSW 6 28125636 missense possibly damaging 0.95
R3804:Grm8 UTSW 6 28125636 missense possibly damaging 0.95
R3830:Grm8 UTSW 6 27761229 nonsense probably null
R3844:Grm8 UTSW 6 27429508 missense possibly damaging 0.69
R4006:Grm8 UTSW 6 27981230 missense probably damaging 1.00
R4077:Grm8 UTSW 6 27760209 missense probably benign 0.01
R4436:Grm8 UTSW 6 27761238 missense possibly damaging 0.48
R4810:Grm8 UTSW 6 27761296 missense possibly damaging 0.87
R5357:Grm8 UTSW 6 27762419 missense probably damaging 1.00
R5677:Grm8 UTSW 6 27761204 critical splice donor site probably null
R5983:Grm8 UTSW 6 27760221 missense probably benign 0.03
R5990:Grm8 UTSW 6 27363624 missense probably damaging 1.00
R6365:Grm8 UTSW 6 27363227 missense probably damaging 1.00
R6454:Grm8 UTSW 6 27363776 missense possibly damaging 0.68
R6713:Grm8 UTSW 6 27363191 missense probably damaging 1.00
R6960:Grm8 UTSW 6 27981282 missense probably damaging 0.98
R7194:Grm8 UTSW 6 27618487 missense probably benign 0.01
R7259:Grm8 UTSW 6 27760176 missense probably null 0.99
R7305:Grm8 UTSW 6 27761355 missense possibly damaging 0.51
R7421:Grm8 UTSW 6 27762477 missense possibly damaging 0.66
R7561:Grm8 UTSW 6 27429525 missense probably benign 0.44
R7605:Grm8 UTSW 6 27618679 missense probably damaging 1.00
R7651:Grm8 UTSW 6 27760258 missense possibly damaging 0.46
R7775:Grm8 UTSW 6 27363672 missense possibly damaging 0.89
R7778:Grm8 UTSW 6 27363672 missense possibly damaging 0.89
R7781:Grm8 UTSW 6 27285787 missense probably benign
R7785:Grm8 UTSW 6 27618637 missense probably damaging 0.99
R7898:Grm8 UTSW 6 27762423 missense probably damaging 1.00
R8272:Grm8 UTSW 6 27363282 missense probably damaging 1.00
R8274:Grm8 UTSW 6 27761336 missense probably benign 0.31
R8501:Grm8 UTSW 6 27618541 missense probably damaging 0.98
R8695:Grm8 UTSW 6 28126031 missense probably benign 0.01
R8824:Grm8 UTSW 6 27761352 missense probably damaging 1.00
R8869:Grm8 UTSW 6 27363753 missense probably benign 0.26
R9322:Grm8 UTSW 6 27363729 missense possibly damaging 0.88
R9337:Grm8 UTSW 6 27761215 missense probably benign 0.01
R9518:Grm8 UTSW 6 27429470 missense probably benign 0.01
RF013:Grm8 UTSW 6 27363780 missense probably damaging 1.00
Z1176:Grm8 UTSW 6 28126027 missense probably benign 0.19
Predicted Primers PCR Primer
(F):5'- ATACATGCCAGCTGCCATAG -3'
(R):5'- CCTTAGAGGAAAATAAGCCCAATG -3'

Sequencing Primer
(F):5'- AGCCTGGTCTCTAAGTGTATAATCC -3'
(R):5'- CCCAATGGGCTATGGTACTATAG -3'
Posted On 2015-07-06