Incidental Mutation 'R0243:Dffb'
ID 215989
Institutional Source Beutler Lab
Gene Symbol Dffb
Ensembl Gene ENSMUSG00000029027
Gene Name DNA fragmentation factor, beta subunit
Synonyms Didff, caspase-activated DNase, CAD, 5730477D02Rik, CPAN, 40kDa, DFF40
MMRRC Submission 038481-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R0243 (G1)
Quality Score 64
Status Validated
Chromosome 4
Chromosomal Location 154048904-154059578 bp(-) (GRCm39)
Type of Mutation nonsense
DNA Base Change (assembly) T to A at 154049835 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Lysine to Stop codon at position 343 (K343*)
Ref Sequence ENSEMBL: ENSMUSP00000030893 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000030893] [ENSMUST00000058393] [ENSMUST00000105645] [ENSMUST00000133607] [ENSMUST00000147826] [ENSMUST00000141493]
AlphaFold O54788
PDB Structure NMR STRUCTURE OF THE CAD DOMAIN OF CASPASE-ACTIVATED DNASE [SOLUTION NMR]
NMR STRUCTURE OF THE HETERODIMERIC COMPLEX BETWEEN CAD DOMAINS OF CAD AND ICAD [SOLUTION NMR]
CRYSTAL STRUCTURE OF CASPASE-ACTIVATED DNASE (CAD) [X-RAY DIFFRACTION]
Predicted Effect probably null
Transcript: ENSMUST00000030893
AA Change: K343*
SMART Domains Protein: ENSMUSP00000030893
Gene: ENSMUSG00000029027
AA Change: K343*

DomainStartEndE-ValueType
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: ENSMUST00000058393
SMART Domains Protein: ENSMUSP00000054638
Gene: ENSMUSG00000047613

DomainStartEndE-ValueType
Pfam:UPF0688 6 228 9.9e-99 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000105645
Predicted Effect noncoding transcript
Transcript: ENSMUST00000128457
Predicted Effect noncoding transcript
Transcript: ENSMUST00000133524
Predicted Effect probably benign
Transcript: ENSMUST00000133607
Predicted Effect probably benign
Transcript: ENSMUST00000147826
Predicted Effect noncoding transcript
Transcript: ENSMUST00000219093
Predicted Effect probably benign
Transcript: ENSMUST00000141493
Meta Mutation Damage Score 0.9642 question?
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.3%
  • 10x: 96.2%
  • 20x: 92.0%
Validation Efficiency 98% (148/151)
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: 139 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
0610040J01Rik T G 5: 64,055,806 (GRCm39) Y181D probably benign Het
1700029H14Rik A G 8: 13,604,715 (GRCm39) V196A possibly damaging Het
2410004B18Rik A G 3: 145,643,833 (GRCm39) D7G probably damaging Het
Acap1 A G 11: 69,776,252 (GRCm39) V249A probably damaging Het
Acat2 A T 17: 13,162,908 (GRCm39) D313E probably benign Het
Actn4 T C 7: 28,604,823 (GRCm39) T325A probably benign Het
Adamdec1 C T 14: 68,819,407 (GRCm39) probably null Het
Adat2 A G 10: 13,429,037 (GRCm39) T10A probably benign Het
Aff4 T A 11: 53,288,685 (GRCm39) S400R possibly damaging Het
Agbl2 C T 2: 90,621,825 (GRCm39) P104L possibly damaging Het
Alox12 G T 11: 70,133,542 (GRCm39) T594K possibly damaging Het
Als2 C A 1: 59,254,546 (GRCm39) K270N probably benign Het
Ankhd1 T A 18: 36,767,787 (GRCm39) C1235S probably damaging Het
Ankrd24 T A 10: 81,470,778 (GRCm39) I69N probably damaging Het
Aox4 G A 1: 58,252,235 (GRCm39) V37I probably benign Het
Arfgap3 A G 15: 83,214,714 (GRCm39) probably benign Het
Arhgef4 T A 1: 34,846,080 (GRCm39) probably null Het
Asic1 C T 15: 99,596,498 (GRCm39) probably benign Het
Atp8b5 A G 4: 43,366,057 (GRCm39) N776S probably benign Het
Bbs7 A G 3: 36,659,883 (GRCm39) I184T probably benign Het
Bbs9 A T 9: 22,425,297 (GRCm39) H117L probably damaging Het
Bnip2 T C 9: 69,902,787 (GRCm39) W10R probably damaging Het
Brd4 G T 17: 32,443,097 (GRCm39) Q175K probably benign Het
Bysl A T 17: 47,917,821 (GRCm39) V124E possibly damaging Het
Cadm3 A G 1: 173,174,140 (GRCm39) probably benign Het
Cc2d2a T C 5: 43,853,980 (GRCm39) probably benign Het
Ccdc134 G T 15: 82,025,147 (GRCm39) E215D probably damaging Het
Celsr3 G T 9: 108,720,923 (GRCm39) probably benign Het
Cntn5 T A 9: 9,781,780 (GRCm39) D428V probably damaging Het
Cog1 A G 11: 113,547,821 (GRCm39) probably benign Het
Col11a2 G T 17: 34,281,520 (GRCm39) probably benign Het
Cyp4f13 G A 17: 33,143,943 (GRCm39) probably benign Het
Dnah9 T A 11: 65,802,678 (GRCm39) I224F possibly damaging Het
Dolk A T 2: 30,176,031 (GRCm39) C5S probably benign Het
Dynlt2b A G 16: 32,245,705 (GRCm39) D118G probably damaging Het
Ebf1 A T 11: 44,759,915 (GRCm39) probably benign Het
Elac1 A G 18: 73,875,434 (GRCm39) L199P probably damaging Het
Elmod1 A C 9: 53,842,831 (GRCm39) probably benign Het
Ep400 A C 5: 110,872,273 (GRCm39) probably benign Het
F10 A T 8: 13,098,196 (GRCm39) N133I probably damaging Het
Fasn A G 11: 120,706,141 (GRCm39) Y1068H probably benign Het
Fbxo24 T C 5: 137,622,819 (GRCm39) E12G probably damaging Het
Fer G T 17: 64,385,941 (GRCm39) L304F probably benign Het
Filip1 A C 9: 79,726,285 (GRCm39) L778R probably damaging Het
Fli1 A T 9: 32,335,277 (GRCm39) I385N probably benign Het
Fpgs A T 2: 32,582,506 (GRCm39) L89* probably null Het
Gab2 T G 7: 96,948,448 (GRCm39) I346R probably damaging Het
Gm10764 G A 10: 87,126,841 (GRCm39) G83R unknown Het
Gpr83 G T 9: 14,776,138 (GRCm39) C153F possibly damaging Het
Gtf3c3 A G 1: 54,442,695 (GRCm39) L783P possibly damaging Het
Gys2 A G 6: 142,418,394 (GRCm39) probably benign Het
Heatr9 C T 11: 83,404,164 (GRCm39) V378I possibly damaging Het
Helz A T 11: 107,528,740 (GRCm39) Y920F possibly damaging Het
Inpp5f A T 7: 128,296,907 (GRCm39) Q459L probably damaging Het
Ints12 T C 3: 132,814,806 (GRCm39) S338P probably benign Het
Kif13a T C 13: 46,944,827 (GRCm39) T925A probably benign Het
Kif1a C T 1: 92,969,815 (GRCm39) V1051I probably damaging Het
Kif7 T A 7: 79,349,308 (GRCm39) H1119L possibly damaging Het
Kmt2d C T 15: 98,748,018 (GRCm39) probably benign Het
Krt90 C T 15: 101,471,110 (GRCm39) G51S possibly damaging Het
Krtap31-2 A T 11: 99,827,572 (GRCm39) I135F possibly damaging Het
Lrp2 T C 2: 69,258,974 (GRCm39) E4572G probably benign Het
Mapk8ip1 T C 2: 92,216,289 (GRCm39) E493G probably damaging Het
Matk T G 10: 81,094,326 (GRCm39) L28V probably benign Het
Mcc T A 18: 44,892,366 (GRCm39) T83S probably benign Het
Mtch1 A T 17: 29,559,080 (GRCm39) M204K possibly damaging Het
Muc4 T G 16: 32,586,120 (GRCm39) C2622G possibly damaging Het
Myo5a G A 9: 75,093,405 (GRCm39) probably null Het
Myoz3 T C 18: 60,712,023 (GRCm39) Y185C probably damaging Het
Nnmt A G 9: 48,503,438 (GRCm39) V196A probably benign Het
Nr2f2 G C 7: 70,009,923 (GRCm39) P52R probably damaging Het
Nup214 T A 2: 31,888,069 (GRCm39) probably benign Het
Or2aj4 T G 16: 19,385,044 (GRCm39) E196D probably damaging Het
Or2y13 T C 11: 49,414,739 (GRCm39) L63P probably damaging Het
Or4c126 T A 2: 89,824,150 (GRCm39) F138I probably benign Het
Pank3 T C 11: 35,672,543 (GRCm39) probably benign Het
Parm1 A T 5: 91,742,153 (GRCm39) N174Y possibly damaging Het
Pcgf2 A T 11: 97,583,244 (GRCm39) probably null Het
Pclo A T 5: 14,825,434 (GRCm39) K4661M unknown Het
Pcsk7 A C 9: 45,827,357 (GRCm39) S375R probably damaging Het
Pdzrn4 G T 15: 92,668,200 (GRCm39) S784I possibly damaging Het
Pex6 T A 17: 47,034,663 (GRCm39) probably null Het
Pi4ka C T 16: 17,115,499 (GRCm39) V1384M probably benign Het
Polr3f T A 2: 144,378,195 (GRCm39) probably benign Het
Ppp2r3d A T 9: 101,089,483 (GRCm39) V280E probably damaging Het
Prdm14 C T 1: 13,192,672 (GRCm39) G356R probably damaging Het
Prepl A G 17: 85,372,466 (GRCm39) probably null Het
Primpol T C 8: 47,052,849 (GRCm39) D154G probably damaging Het
Ptchd4 A C 17: 42,814,307 (GRCm39) H736P probably damaging Het
Rab11fip1 A G 8: 27,642,253 (GRCm39) S849P probably damaging Het
Rap1gap T A 4: 137,446,662 (GRCm39) D405E probably damaging Het
Rbm26 T C 14: 105,369,374 (GRCm39) T686A probably benign Het
Resf1 T C 6: 149,227,739 (GRCm39) Y262H probably damaging Het
Rint1 A G 5: 24,021,930 (GRCm39) probably benign Het
Rnasek G T 11: 70,129,266 (GRCm39) Y62* probably null Het
Rnf17 T G 14: 56,719,541 (GRCm39) N930K possibly damaging Het
Sap130 A G 18: 31,813,734 (GRCm39) probably benign Het
Sectm1b T A 11: 120,946,611 (GRCm39) I95F probably damaging Het
Sema4f A T 6: 82,916,447 (GRCm39) I53N possibly damaging Het
Shld1 T C 2: 132,592,559 (GRCm39) V202A probably benign Het
Siglec1 T C 2: 130,927,396 (GRCm39) T137A probably damaging Het
Six5 A C 7: 18,830,947 (GRCm39) probably null Het
Slc22a30 A T 19: 8,322,721 (GRCm39) I345N probably benign Het
Slc25a27 A T 17: 43,954,518 (GRCm39) M316K probably benign Het
Slc2a8 A T 2: 32,870,116 (GRCm39) probably benign Het
Snx1 G A 9: 66,008,608 (GRCm39) probably benign Het
Spag17 A G 3: 99,992,684 (GRCm39) T1727A probably benign Het
Spata20 T C 11: 94,372,472 (GRCm39) D633G probably benign Het
Spock1 C T 13: 57,583,922 (GRCm39) probably null Het
Sra1 A T 18: 36,808,759 (GRCm39) Y291* probably null Het
Sspo C A 6: 48,470,120 (GRCm39) P4520T probably damaging Het
Stat4 A G 1: 52,051,016 (GRCm39) N25S probably benign Het
Tbx18 A T 9: 87,597,569 (GRCm39) probably benign Het
Tep1 T A 14: 51,084,444 (GRCm39) I187F probably damaging Het
Tfap2b A T 1: 19,304,347 (GRCm39) I368F probably damaging Het
Tmtc1 A T 6: 148,148,335 (GRCm39) L711Q probably damaging Het
Tmx3 T A 18: 90,556,613 (GRCm39) probably benign Het
Tnc G T 4: 63,888,657 (GRCm39) T1803K probably damaging Het
Tnfrsf21 C T 17: 43,349,104 (GRCm39) H239Y probably benign Het
Tpgs1 C T 10: 79,511,700 (GRCm39) P281S probably benign Het
Trim45 A G 3: 100,837,160 (GRCm39) R499G probably benign Het
Tulp3 A T 6: 128,302,921 (GRCm39) Y299* probably null Het
Ube4a A T 9: 44,857,476 (GRCm39) probably benign Het
Ubr3 T G 2: 69,781,749 (GRCm39) S642R probably damaging Het
Vcpip1 A T 1: 9,817,431 (GRCm39) Y317* probably null Het
Vmn1r115 G A 7: 20,578,327 (GRCm39) T195I probably benign Het
Vmn1r226 G A 17: 20,907,839 (GRCm39) V24I probably benign Het
Wdr41 C T 13: 95,153,914 (GRCm39) A321V probably damaging Het
Wfdc5 T C 2: 164,020,755 (GRCm39) N44D probably benign Het
Wnt7b C A 15: 85,443,103 (GRCm39) probably null Het
Zfp108 T C 7: 23,961,208 (GRCm39) S600P possibly damaging Het
Zfp267 A G 3: 36,219,303 (GRCm39) H442R possibly damaging Het
Zfp385b A G 2: 77,246,072 (GRCm39) probably null Het
Zfp395 T C 14: 65,623,929 (GRCm39) S133P probably benign Het
Zfp407 T A 18: 84,576,836 (GRCm39) M1426L probably damaging Het
Zfp641 T G 15: 98,187,008 (GRCm39) N191T possibly damaging Het
Zfp687 T C 3: 94,918,864 (GRCm39) S303G probably damaging Het
Zfp759 T A 13: 67,286,877 (GRCm39) F143I possibly damaging Het
Zgrf1 G C 3: 127,409,095 (GRCm39) E1690Q probably damaging Het
Other mutations in Dffb
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL02502:Dffb APN 4 154,050,073 (GRCm39) unclassified probably benign
R0244:Dffb UTSW 4 154,059,072 (GRCm39) missense probably benign 0.33
R2483:Dffb UTSW 4 154,049,976 (GRCm39) missense probably damaging 1.00
R3622:Dffb UTSW 4 154,049,976 (GRCm39) missense probably damaging 1.00
R3623:Dffb UTSW 4 154,049,976 (GRCm39) missense probably damaging 1.00
R3624:Dffb UTSW 4 154,049,976 (GRCm39) missense probably damaging 1.00
R4562:Dffb UTSW 4 154,049,913 (GRCm39) missense probably damaging 1.00
R4912:Dffb UTSW 4 154,049,864 (GRCm39) unclassified probably benign
R5015:Dffb UTSW 4 154,057,416 (GRCm39) missense possibly damaging 0.84
R5986:Dffb UTSW 4 154,050,050 (GRCm39) missense probably damaging 1.00
R6950:Dffb UTSW 4 154,054,549 (GRCm39) missense probably benign
R7395:Dffb UTSW 4 154,053,570 (GRCm39) missense probably damaging 1.00
R7986:Dffb UTSW 4 154,054,504 (GRCm39) missense probably damaging 0.99
R8731:Dffb UTSW 4 154,059,101 (GRCm39) missense possibly damaging 0.93
R8910:Dffb UTSW 4 154,057,416 (GRCm39) missense possibly damaging 0.84
R9709:Dffb UTSW 4 154,059,121 (GRCm39) missense probably damaging 1.00
Z1176:Dffb UTSW 4 154,057,300 (GRCm39) missense probably damaging 1.00
Predicted Primers PCR Primer
(F):5'- TCCCAGAAGCACCGTTTCTTTCAG -3'
(R):5'- CGTAGTGTGTGGCACTCACAGTAG -3'

Sequencing Primer
(F):5'- ATAGTCAGAGCTGCCATTTGC -3'
(R):5'- TCCCCCTGACTTGGTAGAATAGAG -3'
Posted On 2014-07-16