Incidental Mutation 'N/A:Aif1'
ID 46
Institutional Source Beutler Lab
Gene Symbol Aif1
Ensembl Gene ENSMUSG00000024397
Gene Name allograft inflammatory factor 1
Synonyms G1, D17H6S50E, Iba1
Accession Numbers
Essential gene? Probably non essential (E-score: 0.204) question?
Stock # N/A of strain 294
Quality Score
Status Validated
Chromosome 17
Chromosomal Location 35389967-35394977 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 35391496 bp (GRCm39)
Zygosity Homozygous
Amino Acid Change Leucine to Serine at position 7 (L7S)
Ref Sequence ENSEMBL: ENSMUSP00000134107 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000025257] [ENSMUST00000172693] [ENSMUST00000173106] [ENSMUST00000173324]
AlphaFold O70200
Predicted Effect probably benign
Transcript: ENSMUST00000025257
AA Change: L7S

PolyPhen 2 Score 0.301 (Sensitivity: 0.90; Specificity: 0.89)
SMART Domains Protein: ENSMUSP00000025257
Gene: ENSMUSG00000024397
AA Change: L7S

DomainStartEndE-ValueType
PDB:1WY9|A 1 147 1e-104 PDB
SCOP:d1mr8a_ 48 130 7e-10 SMART
Blast:EFh 49 77 1e-10 BLAST
Blast:EFh 85 113 1e-7 BLAST
Predicted Effect noncoding transcript
Transcript: ENSMUST00000172679
Predicted Effect probably benign
Transcript: ENSMUST00000172693
AA Change: L7S

PolyPhen 2 Score 0.301 (Sensitivity: 0.90; Specificity: 0.89)
SMART Domains Protein: ENSMUSP00000134214
Gene: ENSMUSG00000024397
AA Change: L7S

DomainStartEndE-ValueType
PDB:1WY9|A 1 147 1e-104 PDB
SCOP:d1mr8a_ 48 130 7e-10 SMART
Blast:EFh 49 77 1e-10 BLAST
Blast:EFh 85 113 1e-7 BLAST
Predicted Effect possibly damaging
Transcript: ENSMUST00000173106
AA Change: L7S

PolyPhen 2 Score 0.826 (Sensitivity: 0.84; Specificity: 0.93)
SMART Domains Protein: ENSMUSP00000134107
Gene: ENSMUSG00000024397
AA Change: L7S

DomainStartEndE-ValueType
PDB:1WY9|A 1 128 4e-47 PDB
Blast:EFh 98 122 4e-9 BLAST
SCOP:d1mr8a_ 98 128 7e-4 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000173281
Predicted Effect probably benign
Transcript: ENSMUST00000173324
AA Change: L7S

PolyPhen 2 Score 0.301 (Sensitivity: 0.90; Specificity: 0.89)
SMART Domains Protein: ENSMUSP00000133709
Gene: ENSMUSG00000024397
AA Change: L7S

DomainStartEndE-ValueType
PDB:1WY9|A 1 147 1e-104 PDB
SCOP:d1mr8a_ 48 130 7e-10 SMART
Blast:EFh 49 77 1e-10 BLAST
Blast:EFh 85 113 1e-7 BLAST
Predicted Effect noncoding transcript
Transcript: ENSMUST00000174044
Meta Mutation Damage Score 0.0988 question?
Coding Region Coverage
  • 1x: 88.7%
  • 3x: 76.0%
Validation Efficiency 91% (106/116)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a protein that binds actin and calcium. This gene is induced by cytokines and interferon and may promote macrophage activation and growth of vascular smooth muscle cells and T-lymphocytes. Polymorphisms in this gene may be associated with systemic sclerosis. Alternative splicing results in multiple transcript variants, but the full-length and coding nature of some of these variants is not certain. [provided by RefSeq, Jan 2016]
PHENOTYPE: Mice homozygous for a knock-out allele exhibit decreased spleen weight, decreased platalet cell number and decreased susceptibility to induced arthritis. [provided by MGI curators]
Allele List at MGI

All alleles(2) : Gene trapped(2)

Other mutations in this stock
Total: 18 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1700016P04Rik T A 6: 13,415,772 (GRCm39) noncoding transcript Homo
Ankrd26 T C 6: 118,506,535 (GRCm39) D646G probably benign Homo
Cacna1s A G 1: 136,001,247 (GRCm39) I233V probably benign Homo
Cfap92 A T 6: 87,667,773 (GRCm39) noncoding transcript Homo
Chchd4 T C 6: 91,442,187 (GRCm39) Y77C probably damaging Homo
Crocc G A 4: 140,749,057 (GRCm39) R1419C probably damaging Homo
Cyp4f39 A C 17: 32,687,655 (GRCm39) M74L probably benign Homo
Fgf9 C A 14: 58,327,421 (GRCm39) probably benign Homo
Gimap6 T C 6: 48,679,349 (GRCm39) D229G probably damaging Homo
Glp1r T C 17: 31,150,257 (GRCm39) F393S probably damaging Homo
Lrrc7 T G 3: 157,865,977 (GRCm39) I1255L probably benign Homo
Mtrr C A 13: 68,723,516 (GRCm39) probably benign Homo
Pde6b A T 5: 108,576,969 (GRCm39) probably benign Homo
Rbm19 A T 5: 120,282,162 (GRCm39) I840F probably damaging Homo
Serpina3c A C 12: 104,115,864 (GRCm39) S227A probably benign Homo
Spag17 G A 3: 99,889,570 (GRCm39) probably benign Homo
Spmip3 G A 1: 177,561,100 (GRCm39) R13H probably damaging Homo
Zbtb8b T C 4: 129,326,361 (GRCm39) D268G probably benign Homo
Other mutations in Aif1
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01717:Aif1 APN 17 35,390,531 (GRCm39) missense probably damaging 1.00
IGL03279:Aif1 APN 17 35,390,523 (GRCm39) nonsense probably null
R0396:Aif1 UTSW 17 35,390,085 (GRCm39) makesense probably null
R1062:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1063:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1064:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1105:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1122:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1154:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1286:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1447:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1678:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1689:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1750:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1911:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R1974:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R2314:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R2338:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R2341:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R2915:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
R4953:Aif1 UTSW 17 35,390,074 (GRCm39) splice site probably null
R5260:Aif1 UTSW 17 35,390,917 (GRCm39) critical splice acceptor site probably null
R6786:Aif1 UTSW 17 35,390,472 (GRCm39) missense probably damaging 1.00
R7503:Aif1 UTSW 17 35,390,549 (GRCm39) missense probably damaging 1.00
R7534:Aif1 UTSW 17 35,390,390 (GRCm39) missense possibly damaging 0.77
R7891:Aif1 UTSW 17 35,391,600 (GRCm39) start gained probably benign
R8075:Aif1 UTSW 17 35,390,811 (GRCm39) missense unknown
Y4338:Aif1 UTSW 17 35,391,127 (GRCm39) missense probably benign 0.01
Nature of Mutation
DNA sequencing using the SOLiD technique identified a T to C transition at position 334 of the Aif1 transcript, in exon 2 of 8 total exons. The mutated nucleotide causes a leucine to serine substitution at amino acid 7 of the encoded protein. The mutation has been confirmed by DNA sequencing using the Sanger method (Figure 1).
 
Protein Function and Prediction
Aif1 encodes a 147 amino acid protein that binds actin and calcium, and enhances membrane ruffling and RAC activation. AIF1 plays a role in RAC signaling and phagocytosis and may be important for macrophage activation and function. AIF1 promotes the proliferation of vascular smooth muscle cells and of T-lymphocytes, enhances lymphocyte migration, and plays a role in vascular inflammation (Uniprot O70200). The AIF1 protein contains two EF-hand domains involved in calcium binding.  The L7S mutation is predicted to be benign by the PolyPhen program.
Posted On 2009-11-09