Incidental Mutation 'R3881:Def6'
ID 308793
Institutional Source Beutler Lab
Gene Symbol Def6
Ensembl Gene ENSMUSG00000002257
Gene Name differentially expressed in FDCP 6
Synonyms SLAT, 2410003F05Rik, 6430538D02Rik, IRF-4-binding protein, IBP
MMRRC Submission 040795-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R3881 (G1)
Quality Score 225
Status Not validated
Chromosome 17
Chromosomal Location 28426752-28447582 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 28439189 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Cysteine to Arginine at position 267 (C267R)
Ref Sequence ENSEMBL: ENSMUSP00000002327 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000002327]
AlphaFold no structure available at present
Predicted Effect probably damaging
Transcript: ENSMUST00000002327
AA Change: C267R

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000002327
Gene: ENSMUSG00000002257
AA Change: C267R

DomainStartEndE-ValueType
low complexity region 145 166 N/A INTRINSIC
PH 217 314 3.87e-20 SMART
coiled coil region 318 551 N/A INTRINSIC
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.7%
  • 10x: 97.5%
  • 20x: 95.7%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] DEF6, or IBP, is a guanine nucleotide exchange factor (GEF) for RAC (MIM 602048) and CDC42 (MIM 116952) that is highly expressed in B and T cells (Gupta et al., 2003 [PubMed 12923183]).[supplied by OMIM, Mar 2008]
PHENOTYPE: Homozygous mutants spontaneously develop systemic autoimmunity. Females primarily are affected, displaying hypergammaglobulinemia, accumulation of effector/memory T cells and IgG+ B cells, and production of autoantibodies [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 55 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
2010003K11Rik T G 19: 4,548,417 (GRCm39) K44T possibly damaging Het
4933402N03Rik T C 7: 130,740,823 (GRCm39) E131G probably benign Het
Angptl4 G A 17: 33,996,008 (GRCm39) P323S possibly damaging Het
Cep41 A G 6: 30,658,397 (GRCm39) S201P probably damaging Het
Cep95 A G 11: 106,697,118 (GRCm39) I257V probably damaging Het
Clca4a T C 3: 144,663,079 (GRCm39) N590S probably benign Het
Cyfip2 A G 11: 46,099,162 (GRCm39) L716P probably damaging Het
Cyp2d34 T A 15: 82,502,818 (GRCm39) Q136L probably benign Het
Dgat2 G A 7: 98,818,950 (GRCm39) Q69* probably null Het
Dlgap1 T A 17: 71,093,810 (GRCm39) S710R probably damaging Het
Dnah10 T C 5: 124,850,095 (GRCm39) I1539T probably benign Het
Dnah2 T A 11: 69,342,173 (GRCm39) I2932F possibly damaging Het
Enpp2 A G 15: 54,783,088 (GRCm39) S76P probably damaging Het
Esr2 T C 12: 76,214,394 (GRCm39) D19G probably damaging Het
Fam13b A T 18: 34,595,112 (GRCm39) probably null Het
Fbxw14 A T 9: 109,100,262 (GRCm39) V464D possibly damaging Het
Fcgbpl1 T A 7: 27,839,463 (GRCm39) C425* probably null Het
Gm21961 A G 15: 64,886,716 (GRCm39) probably null Het
Gpd2 C T 2: 57,228,987 (GRCm39) R264* probably null Het
Hps5 A G 7: 46,421,420 (GRCm39) V648A possibly damaging Het
Ints4 A G 7: 97,165,464 (GRCm39) T517A possibly damaging Het
Itpr3 A G 17: 27,332,814 (GRCm39) N1860S probably benign Het
Itsn2 G A 12: 4,684,546 (GRCm39) probably benign Het
Jup A G 11: 100,269,207 (GRCm39) V402A probably benign Het
Letm2 C A 8: 26,083,884 (GRCm39) E116* probably null Het
Ly6c1 T C 15: 74,917,436 (GRCm39) T71A probably benign Het
Mcm3ap G A 10: 76,342,280 (GRCm39) S1591N probably benign Het
Mier2 C T 10: 79,384,584 (GRCm39) probably null Het
Mocs2 T A 13: 114,955,882 (GRCm39) L10* probably null Het
Myo6 A G 9: 80,171,538 (GRCm39) D513G probably damaging Het
Myoz2 T C 3: 122,807,369 (GRCm39) Y147C probably damaging Het
Nin C T 12: 70,089,315 (GRCm39) V1367M probably benign Het
Nr2f6 C T 8: 71,828,675 (GRCm39) A200T probably damaging Het
Obscn C T 11: 58,947,775 (GRCm39) C4418Y probably damaging Het
Or10ak9 A G 4: 118,726,550 (GRCm39) M191V probably benign Het
Or10q12 T C 19: 13,746,144 (GRCm39) V146A probably benign Het
Or5g26 T A 2: 85,494,769 (GRCm39) H3L probably benign Het
Paxip1 C T 5: 27,953,837 (GRCm39) R953Q probably damaging Het
Pcdha1 A T 18: 37,064,454 (GRCm39) I373F possibly damaging Het
Pcdha7 G A 18: 37,108,432 (GRCm39) E486K probably benign Het
Recql5 G A 11: 115,784,780 (GRCm39) P849L probably benign Het
Recql5 G T 11: 115,784,781 (GRCm39) P849T probably benign Het
Rnf180 A T 13: 105,386,915 (GRCm39) M131K possibly damaging Het
Rplp1 A G 9: 61,821,704 (GRCm39) S3P probably benign Het
Rpp38 T A 2: 3,330,283 (GRCm39) R206S probably benign Het
Sdha G T 13: 74,487,311 (GRCm39) P159Q probably damaging Het
Shank2 T C 7: 143,959,121 (GRCm39) V199A probably benign Het
Tex11 C A X: 99,977,021 (GRCm39) A487S possibly damaging Het
Timm50 C A 7: 28,010,432 (GRCm39) A41S probably benign Het
Tmbim1 A G 1: 74,329,157 (GRCm39) probably benign Het
Tmprss11a C T 5: 86,593,664 (GRCm39) V29M possibly damaging Het
Ttc28 A T 5: 111,331,106 (GRCm39) H411L probably damaging Het
Ube4b A T 4: 149,449,861 (GRCm39) probably null Het
Zdhhc22 T A 12: 87,030,400 (GRCm39) M183L probably benign Het
Zfp106 A G 2: 120,362,630 (GRCm39) S830P probably benign Het
Other mutations in Def6
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01603:Def6 APN 17 28,438,714 (GRCm39) splice site probably benign
IGL01619:Def6 APN 17 28,426,838 (GRCm39) missense probably damaging 1.00
IGL01737:Def6 APN 17 28,442,701 (GRCm39) missense possibly damaging 0.94
IGL02550:Def6 APN 17 28,447,235 (GRCm39) missense probably benign 0.03
Huntsville UTSW 17 28,438,950 (GRCm39) missense probably damaging 0.99
Redstone UTSW 17 28,436,729 (GRCm39) missense probably damaging 1.00
Silos UTSW 17 28,436,066 (GRCm39) missense probably damaging 1.00
R0013:Def6 UTSW 17 28,436,066 (GRCm39) missense probably damaging 1.00
R0335:Def6 UTSW 17 28,447,043 (GRCm39) missense possibly damaging 0.83
R0357:Def6 UTSW 17 28,442,909 (GRCm39) missense probably damaging 1.00
R0373:Def6 UTSW 17 28,439,154 (GRCm39) missense probably damaging 0.96
R1161:Def6 UTSW 17 28,436,593 (GRCm39) missense probably benign 0.00
R1310:Def6 UTSW 17 28,436,593 (GRCm39) missense probably benign 0.00
R1470:Def6 UTSW 17 28,444,956 (GRCm39) missense possibly damaging 0.67
R1470:Def6 UTSW 17 28,444,956 (GRCm39) missense possibly damaging 0.67
R1636:Def6 UTSW 17 28,442,892 (GRCm39) missense possibly damaging 0.95
R1778:Def6 UTSW 17 28,439,160 (GRCm39) missense probably benign 0.02
R2432:Def6 UTSW 17 28,447,043 (GRCm39) missense probably benign 0.03
R4402:Def6 UTSW 17 28,438,950 (GRCm39) missense probably damaging 0.99
R4589:Def6 UTSW 17 28,447,121 (GRCm39) missense probably benign
R4683:Def6 UTSW 17 28,436,609 (GRCm39) missense probably damaging 0.99
R5704:Def6 UTSW 17 28,447,200 (GRCm39) missense probably benign
R6481:Def6 UTSW 17 28,445,137 (GRCm39) missense probably benign 0.00
R6805:Def6 UTSW 17 28,442,691 (GRCm39) missense probably damaging 1.00
R7029:Def6 UTSW 17 28,444,943 (GRCm39) missense probably benign 0.05
R7863:Def6 UTSW 17 28,446,841 (GRCm39) missense possibly damaging 0.62
R8229:Def6 UTSW 17 28,436,729 (GRCm39) missense probably damaging 1.00
R8856:Def6 UTSW 17 28,435,972 (GRCm39) missense probably damaging 1.00
R9297:Def6 UTSW 17 28,436,714 (GRCm39) missense probably damaging 1.00
R9671:Def6 UTSW 17 28,438,755 (GRCm39) missense probably benign 0.04
R9684:Def6 UTSW 17 28,436,044 (GRCm39) missense probably damaging 1.00
Predicted Primers PCR Primer
(F):5'- TCCAAGACGTCCTGAAGCAG -3'
(R):5'- GGAACAACTGCCTTGTCATG -3'

Sequencing Primer
(F):5'- AGCAGGTCAGGCAAGCC -3'
(R):5'- TTGTCATGCAGGAGGTCCC -3'
Posted On 2015-04-17