Incidental Mutation 'R7395:Dffb'
ID 573717
Institutional Source Beutler Lab
Gene Symbol Dffb
Ensembl Gene ENSMUSG00000029027
Gene Name DNA fragmentation factor, beta subunit
Synonyms 5730477D02Rik, caspase-activated DNase, Didff, CAD, CPAN, DFF40, 40kDa
MMRRC Submission
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R7395 (G1)
Quality Score 225.009
Status Validated
Chromosome 4
Chromosomal Location 153964449-153975126 bp(-) (GRCm38)
Type of Mutation missense
DNA Base Change (assembly) A to T at 153969113 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Serine to Arginine at position 257 (S257R)
Ref Sequence ENSEMBL: ENSMUSP00000030893 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000030893] [ENSMUST00000133607]
AlphaFold O54788
Predicted Effect probably damaging
Transcript: ENSMUST00000030893
AA Change: S257R

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000030893
Gene: ENSMUSG00000029027
AA Change: S257R

CAD 9 81 2.48e-41 SMART
Pfam:DFF40 103 324 9.4e-97 PFAM
low complexity region 330 344 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000133607
Meta Mutation Damage Score 0.6467 question?
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.6%
  • 20x: 98.8%
Validation Efficiency 99% (92/93)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] Apoptosis is a cell death process that removes toxic and/or useless cells during mammalian development. The apoptotic process is accompanied by shrinkage and fragmentation of the cells and nuclei and degradation of the chromosomal DNA into nucleosomal units. DNA fragmentation factor (DFF) is a heterodimeric protein of 40-kD (DFFB) and 45-kD (DFFA) subunits. DFFA is the substrate for caspase-3 and triggers DNA fragmentation during apoptosis. DFF becomes activated when DFFA is cleaved by caspase-3. The cleaved fragments of DFFA dissociate from DFFB, the active component of DFF. DFFB has been found to trigger both DNA fragmentation and chromatin condensation during apoptosis. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene but the biological validity of some of these variants has not been determined. [provided by RefSeq, Sep 2013]
PHENOTYPE: Mice homozygous for a knock-out allele are viable, fertile and developmentally normal; however, mutant thymocytes and other cell types fail to undergo apoptotic DNA fragmentation in response to dexamethasone or other apoptotic stimuli. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 94 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
3830403N18Rik G T X: 56,138,780 probably null Het
4930433I11Rik A T 7: 40,989,678 T13S probably damaging Het
Abca13 A G 11: 9,291,658 I1174V probably benign Het
Acoxl G A 2: 127,884,416 V237M probably damaging Het
Adam33 A C 2: 131,061,169 W52G probably benign Het
Adgrv1 T C 13: 81,559,348 H1313R probably damaging Het
Ap3d1 T C 10: 80,730,882 T89A probably benign Het
Armc8 T C 9: 99,533,132 E165G probably damaging Het
Atp6v1c1 T C 15: 38,691,705 *383Q probably null Het
Atp8b4 A T 2: 126,375,694 L634Q possibly damaging Het
B3glct A G 5: 149,725,604 probably null Het
Bhlhe40 TG TGG 6: 108,664,857 254 probably null Het
Bicd2 A G 13: 49,378,230 D316G possibly damaging Het
Bop1 A T 15: 76,453,841 S610T probably damaging Het
Car11 T A 7: 45,701,321 Y80* probably null Het
Ccdc96 T C 5: 36,485,265 I205T probably benign Het
Ces2a A G 8: 104,739,641 E390G probably benign Het
Cfap54 C A 10: 92,884,703 V2630L unknown Het
Chek2 G T 5: 110,872,108 probably null Het
Cntn3 C T 6: 102,337,394 probably null Het
Cpne3 A T 4: 19,528,239 D339E probably damaging Het
Crocc2 C T 1: 93,216,107 Q1403* probably null Het
Csnka2ip G A 16: 64,479,440 T187I Het
Ctu1 A G 7: 43,676,595 H226R possibly damaging Het
Cubn G T 2: 13,287,064 Q3317K probably damaging Het
Cyp17a1 A G 19: 46,670,695 L169P probably benign Het
Dcc T A 18: 71,374,569 K911* probably null Het
Dcun1d2 G A 8: 13,278,675 R75* probably null Het
Defb19 A T 2: 152,580,023 probably null Het
Dip2c A C 13: 9,614,377 N942T probably damaging Het
Dnah3 T A 7: 119,966,251 I169F Het
Dnah3 T C 7: 120,060,960 M830V probably benign Het
Dnajc5g G A 5: 31,111,665 S130N possibly damaging Het
Dscaml1 C A 9: 45,702,405 Q939K possibly damaging Het
Evpl G C 11: 116,227,079 N761K possibly damaging Het
Fbxw8 A T 5: 118,068,215 I556N probably damaging Het
Fry G T 5: 150,380,883 M579I possibly damaging Het
Ggt7 A T 2: 155,495,880 M488K probably benign Het
Gm6588 A T 5: 112,450,169 E194V possibly damaging Het
Gnpnat1 T A 14: 45,381,581 H107L probably benign Het
Golga2 C A 2: 32,305,587 P798Q possibly damaging Het
Gpr35 G A 1: 92,983,207 A214T probably damaging Het
Greb1 A T 12: 16,709,430 probably null Het
Hdac10 G A 15: 89,128,284 T32I probably benign Het
Hkdc1 G A 10: 62,385,699 T860I probably damaging Het
Icam5 C A 9: 21,035,442 P422Q possibly damaging Het
Ispd A T 12: 36,501,995 I283F possibly damaging Het
Ist1 A C 8: 109,677,527 S238A probably benign Het
Lrig2 T C 3: 104,497,520 N91D probably benign Het
Mapt A C 11: 104,328,123 D352A probably damaging Het
Micall2 G A 5: 139,716,369 P373L possibly damaging Het
Mocs1 A G 17: 49,454,557 S560G possibly damaging Het
Mpo A G 11: 87,801,124 D461G probably damaging Het
Myo1a G T 10: 127,710,440 V271L probably damaging Het
Ncoa1 G A 12: 4,295,188 P720S not run Het
Ncr1 T A 7: 4,338,151 I47N probably damaging Het
Ndufb6 G A 4: 40,277,730 R66C probably damaging Het
Obox5 A T 7: 15,758,743 S208C probably damaging Het
Olfr136 A T 17: 38,335,864 K236* probably null Het
Olfr1494 T C 19: 13,749,138 S11P probably damaging Het
Olfr39 T A 9: 20,286,530 M285K probably damaging Het
Olfr501-ps1 T A 7: 108,508,404 F116Y unknown Het
Padi4 A C 4: 140,761,672 V152G probably damaging Het
Pdzd7 A T 19: 45,037,011 D348E probably damaging Het
Pdzph1 T A 17: 58,879,159 K1212N possibly damaging Het
Piezo2 C T 18: 63,027,563 G2341R probably damaging Het
Plb1 A G 5: 32,353,684 K1298E probably benign Het
Prr14l A G 5: 32,828,638 L1171P probably benign Het
Rab11fip5 T C 6: 85,341,868 T680A probably benign Het
Rev1 A T 1: 38,088,065 N371K possibly damaging Het
Rsf1 CGGCGGCGG CGGCGGCGGGGGCGGCGG 7: 97,579,926 probably benign Het
Ryr2 A G 13: 11,785,111 C917R probably damaging Het
Sall1 A T 8: 89,030,921 S852T possibly damaging Het
Serpine2 A G 1: 79,801,555 F296L probably damaging Het
Slc12a6 A T 2: 112,352,542 N754I probably damaging Het
Slc39a6 A T 18: 24,585,275 L575Q probably damaging Het
Smarcc2 T A 10: 128,485,606 L890Q probably damaging Het
Smg5 T A 3: 88,361,071 V1006D probably damaging Het
Ssh2 T C 11: 77,393,073 V51A probably damaging Het
St14 T C 9: 31,096,899 K547E probably benign Het
Stag1 T G 9: 100,796,728 V234G probably damaging Het
Stag3 A T 5: 138,281,945 Q24L probably benign Het
Stra6 T C 9: 58,141,097 Y158H probably damaging Het
Tcstv1 A T 13: 119,894,130 probably null Het
Tmem196 G A 12: 120,011,267 C62Y probably damaging Het
Tmem265 T A 7: 127,564,867 F84L Het
Tph1 C T 7: 46,657,203 probably null Het
Ttn A G 2: 76,946,490 I1522T unknown Het
Ulk4 T A 9: 121,255,112 Q129L probably benign Het
Usp17la T A 7: 104,861,585 S466T probably benign Het
Vmn2r31 A T 7: 7,384,745 V609E probably damaging Het
Vmn2r52 C T 7: 10,170,817 C365Y probably benign Het
Zbtb4 A T 11: 69,776,111 T81S possibly damaging Het
Zfp605 A T 5: 110,112,019 probably benign Het
Other mutations in Dffb
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL02502:Dffb APN 4 153965616 unclassified probably benign
R0243:Dffb UTSW 4 153965378 nonsense probably null
R0244:Dffb UTSW 4 153974615 missense probably benign 0.33
R2483:Dffb UTSW 4 153965519 missense probably damaging 1.00
R3622:Dffb UTSW 4 153965519 missense probably damaging 1.00
R3623:Dffb UTSW 4 153965519 missense probably damaging 1.00
R3624:Dffb UTSW 4 153965519 missense probably damaging 1.00
R4562:Dffb UTSW 4 153965456 missense probably damaging 1.00
R4912:Dffb UTSW 4 153965407 unclassified probably benign
R5015:Dffb UTSW 4 153972959 missense possibly damaging 0.84
R5986:Dffb UTSW 4 153965593 missense probably damaging 1.00
R6950:Dffb UTSW 4 153970092 missense probably benign
R7986:Dffb UTSW 4 153970047 missense probably damaging 0.99
R8731:Dffb UTSW 4 153974644 missense possibly damaging 0.93
R8910:Dffb UTSW 4 153972959 missense possibly damaging 0.84
R9709:Dffb UTSW 4 153974664 missense probably damaging 1.00
Z1176:Dffb UTSW 4 153972843 missense probably damaging 1.00
Predicted Primers PCR Primer

Sequencing Primer
Posted On 2019-09-13