Incidental Mutation 'B5639:Olfr181'
ID 543
Institutional Source Beutler Lab
Gene Symbol Olfr181
Ensembl Gene ENSMUSG00000090951
Gene Name olfactory receptor 181
Synonyms MOR184-4, GA_x54KRFPKG5P-55145984-55145034
Accession Numbers

Genbank: NM_146999

Is this an essential gene? Probably non essential (E-score: 0.065) question?
Stock # B5639 of strain 3d
Quality Score
Status Validated
Chromosome 16
Chromosomal Location 58924707-58928755 bp(-) (GRCm38)
Type of Mutation missense
DNA Base Change (assembly) A to T at 58926526 bp (GRCm38)
Zygosity Homozygous
Amino Acid Change Isoleucine to Lysine at position 15 (I15K)
Ref Sequence ENSEMBL: ENSMUSP00000145877 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000075361] [ENSMUST00000205668] [ENSMUST00000205742] [ENSMUST00000205986] [ENSMUST00000206168]
AlphaFold Q8VGQ7
Predicted Effect probably benign
Transcript: ENSMUST00000075361
AA Change: I15K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000074825
Gene: ENSMUSG00000090951
AA Change: I15K

Pfam:7tm_4 31 305 5.7e-52 PFAM
Pfam:7TM_GPCR_Srsx 35 308 6.1e-6 PFAM
Pfam:7tm_1 41 308 3.3e-19 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000205668
AA Change: I15K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
Predicted Effect probably benign
Transcript: ENSMUST00000205742
AA Change: I15K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
Predicted Effect probably benign
Transcript: ENSMUST00000205986
AA Change: I15K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
Predicted Effect probably benign
Transcript: ENSMUST00000206168
Predicted Effect noncoding transcript
Transcript: ENSMUST00000214942
Meta Mutation Damage Score 0.1346 question?
Coding Region Coverage
  • 1x: 89.7%
  • 3x: 78.3%
Het Detection Efficiency 55.9%
Validation Efficiency 83% (206/248)
MGI Phenotype FUNCTION: Olfactory receptors interact with odorant molecules in the nose, to initiate a neuronal response that triggers the perception of a smell. The olfactory receptor proteins are members of a large family of G-protein-coupled receptors (GPCR) arising from single coding-exon genes. Olfactory receptors share a 7-transmembrane domain structure with many neurotransmitter and hormone receptors and are responsible for the recognition and G protein-mediated transduction of odorant signals. The olfactory receptor gene family is the largest in the genome. The nomenclature assigned to the olfactory receptor genes and proteins for this organism is independent of other organisms. [provided by RefSeq, Jul 2008]
Allele List at MGI

All alleles(1) : Gene trapped(1) 

Other mutations in this stock
Total: 15 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Dnmt1 G A 9: 20,907,968 probably benign Het
Eno1 A G 4: 150,245,112 probably benign Het
Ercc8 G A 13: 108,160,723 G56R probably damaging Homo
Gm8773 C T 5: 5,574,060 probably benign Homo
Idh1 A G 1: 65,165,098 probably null Homo
Incenp G A 19: 9,893,818 T149I unknown Het
Olfr1155 G A 2: 87,943,598 S10F probably benign Het
Pdk2 T C 11: 95,032,498 D100G possibly damaging Homo
Prss56 T C 1: 87,187,170 L465P probably benign Homo
Slc10a3 G A X: 74,369,539 P416L probably damaging Homo
Syne2 C A 12: 75,929,790 T1243K probably benign Het
Vwf T C 6: 125,642,984 Y1542H probably damaging Homo
Zc3h13 G A 14: 75,316,039 R302Q probably damaging Het
Zfhx4 G T 3: 5,403,175 G2798W probably damaging Homo
Zfp667 A G 7: 6,290,545 T15A probably damaging Het
Other mutations in Olfr181
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01845:Olfr181 APN 16 58926566 missense probably benign
IGL02477:Olfr181 APN 16 58925763 missense probably benign 0.07
IGL02545:Olfr181 APN 16 58926470 missense possibly damaging 0.88
IGL02690:Olfr181 APN 16 58925851 missense possibly damaging 0.78
IGL02718:Olfr181 APN 16 58926096 missense possibly damaging 0.57
IGL02945:Olfr181 APN 16 58926340 missense probably damaging 1.00
IGL03349:Olfr181 APN 16 58925960 missense probably benign 0.00
R0550:Olfr181 UTSW 16 58926385 missense probably damaging 1.00
R0659:Olfr181 UTSW 16 58926409 missense possibly damaging 0.94
R1433:Olfr181 UTSW 16 58925686 missense probably benign
R1957:Olfr181 UTSW 16 58926167 missense probably benign
R2155:Olfr181 UTSW 16 58926123 missense probably benign 0.01
R2404:Olfr181 UTSW 16 58925635 missense probably benign 0.01
R2568:Olfr181 UTSW 16 58925923 missense probably benign 0.27
R4022:Olfr181 UTSW 16 58926120 missense possibly damaging 0.94
R4592:Olfr181 UTSW 16 58926092 missense probably benign 0.00
R4673:Olfr181 UTSW 16 58925690 missense possibly damaging 0.61
R4880:Olfr181 UTSW 16 58926100 missense probably damaging 0.98
R5109:Olfr181 UTSW 16 58926059 missense probably benign 0.10
R5231:Olfr181 UTSW 16 58925714 missense possibly damaging 0.94
R5291:Olfr181 UTSW 16 58926401 missense possibly damaging 0.96
R5477:Olfr181 UTSW 16 58926030 missense possibly damaging 0.61
R5524:Olfr181 UTSW 16 58925809 missense probably benign 0.00
R5809:Olfr181 UTSW 16 58926497 missense probably benign
R5830:Olfr181 UTSW 16 58926094 missense possibly damaging 0.64
R6119:Olfr181 UTSW 16 58926532 missense possibly damaging 0.94
R6217:Olfr181 UTSW 16 58926514 missense probably benign 0.03
R6861:Olfr181 UTSW 16 58926504 missense probably benign
R6939:Olfr181 UTSW 16 58926285 nonsense probably null
R7376:Olfr181 UTSW 16 58925758 missense possibly damaging 0.82
R7650:Olfr181 UTSW 16 58926053 nonsense probably null
R8153:Olfr181 UTSW 16 58925786 missense possibly damaging 0.47
R8947:Olfr181 UTSW 16 58926070 missense probably benign
R9205:Olfr181 UTSW 16 58926122 missense probably benign 0.00
R9205:Olfr181 UTSW 16 58926123 missense probably benign 0.01
R9318:Olfr181 UTSW 16 58925908 missense probably damaging 1.00
Nature of Mutation

DNA sequencing using the SOLiD technique identified a T to A transversion at position 422 of the Olfr181 transcript, in exon 2 of 2 total exons.  The mutation causes an isoleucine to lysine change at amino acid 15 of the encoded protein.  The mutation has been confirmed by DNA sequencing using the Sanger method (see trace files for B5639).

Protein Function and Prediction

The 317 amino acid olfactory receptor 181 (Olfr181) is a potential odorant receptor belonging to the seven transmembrane G-protein coupled receptor family (Uniprot Q8VGQ7).  Its N and C termini are positioned extracellularly and intracellularly, respectively.


The mutation lies in the extracellular N-terminal segment of the protein, and is predicted to be benign by the PolyPhen-2 program.

Posted On 2010-11-23