Incidental Mutation 'R3804:Top1'
ID 274477
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 040879-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R3804 (G1)
Quality Score 225
Status Validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 160544688 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Histidine to Arginine at position 268 (H268R)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably damaging
Transcript: ENSMUST00000109468
AA Change: H268R

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: H268R

DomainStartEndE-ValueType
low complexity region 20 95 N/A INTRINSIC
low complexity region 150 211 N/A INTRINSIC
Blast:TOPEUc 245 321 9e-19 BLAST
low complexity region 323 339 N/A INTRINSIC
TOPEUc 362 739 4.43e-280 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000164510
Meta Mutation Damage Score 0.3499 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.7%
  • 10x: 97.5%
  • 20x: 95.8%
Validation Efficiency 100% (67/67)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a DNA topoisomerase, an enzyme that controls and alters the topologic states of DNA during transcription. This enzyme catalyzes the transient breaking and rejoining of a single strand of DNA which allows the strands to pass through one another, thus altering the topology of DNA. This gene is localized to chromosome 20 and has pseudogenes which reside on chromosomes 1 and 22. [provided by RefSeq, Jul 2008]
PHENOTYPE: A homozygous mutation resulted in early embryonic lethality at the 4 to 16 cell stage of development. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 66 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1700011L22Rik C T 8: 79,974,922 (GRCm39) E54K probably benign Het
Adgra1 A G 7: 139,425,510 (GRCm39) T8A probably benign Het
Alms1 A G 6: 85,596,629 (GRCm39) Y954C probably damaging Het
AU021092 A C 16: 5,034,626 (GRCm39) F199V possibly damaging Het
Bahcc1 C T 11: 120,174,184 (GRCm39) P1648L probably benign Het
Cacna1s T A 1: 136,034,756 (GRCm39) C1319S possibly damaging Het
Capn13 G A 17: 73,646,396 (GRCm39) P339L probably benign Het
Ccdc39 A T 3: 33,874,044 (GRCm39) M596K probably damaging Het
Cfap418 A G 4: 10,898,014 (GRCm39) T199A probably benign Het
Cntn5 A G 9: 9,781,668 (GRCm39) probably benign Het
Cyth4 A G 15: 78,494,002 (GRCm39) K159E probably damaging Het
Dgkz C A 2: 91,769,975 (GRCm39) R563L probably benign Het
Dnah8 A G 17: 30,889,621 (GRCm39) E718G probably benign Het
Dop1a T C 9: 86,403,048 (GRCm39) L1416P probably damaging Het
Dstyk G A 1: 132,377,464 (GRCm39) A110T probably damaging Het
Eif1 A G 11: 100,211,650 (GRCm39) K95E probably damaging Het
Espnl A G 1: 91,249,943 (GRCm39) D30G probably benign Het
Gast T C 11: 100,227,636 (GRCm39) S73P probably damaging Het
Gmppb T C 9: 107,927,773 (GRCm39) Y176H probably damaging Het
Grap2 A G 15: 80,507,947 (GRCm39) T4A possibly damaging Het
Grm8 T G 6: 28,125,635 (GRCm39) N164H possibly damaging Het
Gstm3 G A 3: 107,871,551 (GRCm39) T210I probably benign Het
Gtf3c3 A G 1: 54,463,166 (GRCm39) probably null Het
Hmcn2 A G 2: 31,242,897 (GRCm39) probably null Het
Icam2 A G 11: 106,271,648 (GRCm39) L94P probably damaging Het
Iqcm C A 8: 76,396,021 (GRCm39) T188K possibly damaging Het
Jarid2 T A 13: 45,056,307 (GRCm39) N365K probably benign Het
Kank4 A G 4: 98,668,370 (GRCm39) S26P probably damaging Het
Lgr4 A G 2: 109,838,542 (GRCm39) K498E probably benign Het
Meltf A G 16: 31,703,816 (GRCm39) H181R probably benign Het
Mslnl G A 17: 25,961,908 (GRCm39) V128M probably damaging Het
Nf1 A G 11: 79,450,347 (GRCm39) D511G probably null Het
Nhlrc3 A G 3: 53,366,052 (GRCm39) V147A possibly damaging Het
Nrap C T 19: 56,310,211 (GRCm39) D1595N probably damaging Het
Or1e16 T C 11: 73,286,776 (GRCm39) Q24R probably benign Het
Or5p4 A T 7: 107,680,378 (GRCm39) I126F probably damaging Het
Or6c212 T A 10: 129,558,918 (GRCm39) D165V possibly damaging Het
Or6n2 T A 1: 173,897,474 (GRCm39) N203K probably damaging Het
Pak3 G A X: 142,492,727 (GRCm39) V87I probably damaging Het
Pgm2l1 T C 7: 99,901,474 (GRCm39) V121A probably benign Het
Phf19 A G 2: 34,789,670 (GRCm39) L350P probably damaging Het
Phf8 T C X: 150,355,572 (GRCm39) S512P possibly damaging Het
Phkb G T 8: 86,648,858 (GRCm39) E225* probably null Het
Pif1 T A 9: 65,495,588 (GRCm39) V166E probably damaging Het
Plaa T C 4: 94,458,125 (GRCm39) D615G probably damaging Het
Prpf4b T C 13: 35,067,665 (GRCm39) probably benign Het
Rxra T C 2: 27,646,272 (GRCm39) C374R probably damaging Het
Septin3 T C 15: 82,170,630 (GRCm39) probably benign Het
Skint4 G T 4: 111,975,378 (GRCm39) V113L probably damaging Het
Slc16a10 G C 10: 39,932,620 (GRCm39) H314D possibly damaging Het
Slc22a15 C T 3: 101,804,590 (GRCm39) G145D probably damaging Het
Slc28a1 A T 7: 80,775,969 (GRCm39) I222F probably damaging Het
Slc43a2 T C 11: 75,454,424 (GRCm39) L323P probably benign Het
Sorbs3 A G 14: 70,436,800 (GRCm39) probably benign Het
Spink10 C T 18: 62,786,485 (GRCm39) probably benign Het
Suclg2 A T 6: 95,474,649 (GRCm39) I372N probably damaging Het
Sun1 C A 5: 139,211,117 (GRCm39) C164* probably null Het
Tax1bp1 T C 6: 52,719,770 (GRCm39) F453L probably benign Het
Tmem54 A G 4: 129,002,013 (GRCm39) N9S probably benign Het
Tmx4 A G 2: 134,462,497 (GRCm39) W145R probably damaging Het
Ttn A G 2: 76,641,075 (GRCm39) L13598P probably damaging Het
Vmn1r40 A G 6: 89,691,991 (GRCm39) I269M probably benign Het
Wdr7 G T 18: 63,853,907 (GRCm39) R80L probably benign Het
Zap70 A T 1: 36,810,223 (GRCm39) Q111L possibly damaging Het
Zfp808 T A 13: 62,319,897 (GRCm39) H375Q probably damaging Het
Zkscan2 A T 7: 123,094,365 (GRCm39) probably benign Het
Other mutations in Top1
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL02168:Top1 APN 2 160,546,893 (GRCm39) splice site probably null
IGL03083:Top1 APN 2 160,545,498 (GRCm39) missense probably damaging 0.97
IGL03242:Top1 APN 2 160,557,653 (GRCm39) missense probably damaging 1.00
IGL03369:Top1 APN 2 160,535,647 (GRCm39) missense unknown
Mainspring UTSW 2 160,556,158 (GRCm39) missense probably damaging 0.98
Taut UTSW 2 160,562,921 (GRCm39) missense probably damaging 0.99
unwind UTSW 2 160,546,739 (GRCm39) missense probably damaging 1.00
R0022:Top1 UTSW 2 160,544,719 (GRCm39) missense possibly damaging 0.62
R0449:Top1 UTSW 2 160,554,628 (GRCm39) nonsense probably null
R0501:Top1 UTSW 2 160,556,079 (GRCm39) missense probably damaging 1.00
R0564:Top1 UTSW 2 160,556,185 (GRCm39) missense probably damaging 0.98
R0946:Top1 UTSW 2 160,554,588 (GRCm39) nonsense probably null
R0972:Top1 UTSW 2 160,562,945 (GRCm39) missense probably damaging 1.00
R0976:Top1 UTSW 2 160,559,343 (GRCm39) missense possibly damaging 0.86
R1534:Top1 UTSW 2 160,556,152 (GRCm39) missense probably damaging 1.00
R1608:Top1 UTSW 2 160,545,515 (GRCm39) missense probably benign 0.01
R1655:Top1 UTSW 2 160,545,616 (GRCm39) critical splice donor site probably null
R1818:Top1 UTSW 2 160,557,643 (GRCm39) missense probably damaging 1.00
R1937:Top1 UTSW 2 160,512,042 (GRCm39) missense unknown
R2055:Top1 UTSW 2 160,544,748 (GRCm39) splice site probably benign
R2104:Top1 UTSW 2 160,546,739 (GRCm39) missense probably damaging 1.00
R3705:Top1 UTSW 2 160,544,744 (GRCm39) critical splice donor site probably null
R3769:Top1 UTSW 2 160,563,442 (GRCm39) missense probably damaging 1.00
R3770:Top1 UTSW 2 160,563,442 (GRCm39) missense probably damaging 1.00
R3801:Top1 UTSW 2 160,544,688 (GRCm39) missense probably damaging 1.00
R3928:Top1 UTSW 2 160,529,669 (GRCm39) splice site probably benign
R4598:Top1 UTSW 2 160,562,885 (GRCm39) missense possibly damaging 0.89
R4651:Top1 UTSW 2 160,554,637 (GRCm39) missense probably damaging 1.00
R4652:Top1 UTSW 2 160,554,637 (GRCm39) missense probably damaging 1.00
R4742:Top1 UTSW 2 160,545,490 (GRCm39) critical splice acceptor site probably null
R5523:Top1 UTSW 2 160,544,695 (GRCm39) nonsense probably null
R6292:Top1 UTSW 2 160,540,061 (GRCm39) missense probably benign 0.19
R6724:Top1 UTSW 2 160,554,616 (GRCm39) missense probably damaging 1.00
R7354:Top1 UTSW 2 160,546,878 (GRCm39) missense probably damaging 1.00
R7461:Top1 UTSW 2 160,554,762 (GRCm39) splice site probably null
R7843:Top1 UTSW 2 160,556,176 (GRCm39) missense possibly damaging 0.90
R7855:Top1 UTSW 2 160,556,008 (GRCm39) missense probably damaging 1.00
R8100:Top1 UTSW 2 160,540,155 (GRCm39) nonsense probably null
R8302:Top1 UTSW 2 160,545,496 (GRCm39) missense probably damaging 1.00
R8377:Top1 UTSW 2 160,488,009 (GRCm39) start gained probably benign
R8380:Top1 UTSW 2 160,559,315 (GRCm39) missense probably benign 0.00
R8381:Top1 UTSW 2 160,545,594 (GRCm39) missense probably null 0.77
R8392:Top1 UTSW 2 160,559,374 (GRCm39) nonsense probably null
R8713:Top1 UTSW 2 160,559,360 (GRCm39) missense probably damaging 0.98
R8773:Top1 UTSW 2 160,556,158 (GRCm39) missense probably damaging 0.98
R8844:Top1 UTSW 2 160,563,469 (GRCm39) missense probably damaging 1.00
R8949:Top1 UTSW 2 160,547,182 (GRCm39) missense possibly damaging 0.77
R8992:Top1 UTSW 2 160,562,921 (GRCm39) missense probably damaging 0.99
R9133:Top1 UTSW 2 160,545,591 (GRCm39) nonsense probably null
R9799:Top1 UTSW 2 160,563,406 (GRCm39) missense probably damaging 1.00
X0027:Top1 UTSW 2 160,563,438 (GRCm39) nonsense probably null
Predicted Primers PCR Primer
(F):5'- CCTTGGAAAGGTGAGCCATC -3'
(R):5'- GCAGTCACATGAAAGCTGAG -3'

Sequencing Primer
(F):5'- GTGAGCCATCAGTCATGACCTC -3'
(R):5'- AGCTGAGAAGGGATATATTCTTGTTG -3'
Posted On 2015-04-02