Incidental Mutation 'R6724:Top1'
ID 529743
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 044842-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R6724 (G1)
Quality Score 225.009
Status Validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) G to A at 160554616 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Methionine at position 456 (V456M)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably damaging
Transcript: ENSMUST00000109468
AA Change: V456M

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: V456M

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: ENSMUST00000150039
Meta Mutation Damage Score 0.7284 question?
Coding Region Coverage
  • 1x: 99.9%
  • 3x: 99.6%
  • 10x: 98.2%
  • 20x: 94.8%
Validation Efficiency 98% (63/64)
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: 63 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adamts5 T A 16: 85,665,445 (GRCm39) T619S probably benign Het
Adgra2 G A 8: 27,604,210 (GRCm39) A467T possibly damaging Het
Alox5 A T 6: 116,391,509 (GRCm39) I416N probably damaging Het
Blmh A G 11: 76,862,733 (GRCm39) probably null Het
Cftr T A 6: 18,255,973 (GRCm39) Y567* probably null Het
Cnr1 T A 4: 33,944,728 (GRCm39) M372K possibly damaging Het
Col6a3 T C 1: 90,706,874 (GRCm39) T2080A unknown Het
Crybg3 A T 16: 59,364,501 (GRCm39) C2374S probably benign Het
Csmd2 A G 4: 128,457,164 (GRCm39) I3544V probably damaging Het
Dnah12 A T 14: 26,518,180 (GRCm39) D1809V probably benign Het
Dnah8 G A 17: 30,967,542 (GRCm39) D2585N probably benign Het
Dnajb12 A G 10: 59,728,602 (GRCm39) D190G possibly damaging Het
Dtnb T A 12: 3,736,817 (GRCm39) V319D probably damaging Het
Eif1ad6 A T 12: 87,668,754 (GRCm39) I129F unknown Het
Ercc6 A T 14: 32,288,288 (GRCm39) E820V probably benign Het
Fip1l1 T G 5: 74,752,435 (GRCm39) V378G probably damaging Het
Gabrg1 T A 5: 70,911,552 (GRCm39) Y358F possibly damaging Het
Gcn1 T G 5: 115,747,217 (GRCm39) probably null Het
Gm11011 T A 2: 169,429,402 (GRCm39) T28S unknown Het
Guf1 C A 5: 69,723,736 (GRCm39) N438K probably damaging Het
Hoxa7 T C 6: 52,192,719 (GRCm39) E223G probably benign Het
Hspg2 G A 4: 137,242,618 (GRCm39) G611E probably damaging Het
Ipo8 A T 6: 148,711,473 (GRCm39) probably null Het
Isl2 A G 9: 55,448,572 (GRCm39) D3G possibly damaging Het
Kcnb2 A G 1: 15,780,664 (GRCm39) Y512C probably damaging Het
Kifc1 T A 17: 34,105,707 (GRCm39) probably null Het
Klhdc10 A G 6: 30,446,640 (GRCm39) D183G probably damaging Het
Klra5 T A 6: 129,883,643 (GRCm39) K71N probably benign Het
Lrp6 T C 6: 134,463,504 (GRCm39) H559R possibly damaging Het
Maml3 T C 3: 51,763,296 (GRCm39) N556S probably damaging Het
Man2a1 A G 17: 65,038,264 (GRCm39) I83V possibly damaging Het
Mrgpra9 A G 7: 46,884,786 (GRCm39) S293P probably damaging Het
Nalcn A G 14: 123,535,479 (GRCm39) S1282P probably damaging Het
Npepps A T 11: 97,096,828 (GRCm39) probably benign Het
Or4a72 A T 2: 89,405,309 (GRCm39) F254I probably benign Het
Or4c108 T G 2: 88,803,612 (GRCm39) I208L probably benign Het
Or8u10 A T 2: 85,915,701 (GRCm39) V140E possibly damaging Het
Or9m1 T G 2: 87,733,946 (GRCm39) S25R probably benign Het
Pkn3 C A 2: 29,980,562 (GRCm39) R818S possibly damaging Het
Plekha3 T A 2: 76,517,745 (GRCm39) H190Q probably damaging Het
Ppp2r3c A T 12: 55,335,281 (GRCm39) S261T probably benign Het
Ptprj T C 2: 90,281,195 (GRCm39) D1015G probably benign Het
Pus10 T C 11: 23,679,037 (GRCm39) M503T possibly damaging Het
Pvr T C 7: 19,652,604 (GRCm39) R104G possibly damaging Het
Rubcnl A G 14: 75,289,450 (GRCm39) R653G probably benign Het
Semp2l2a A T 8: 13,887,083 (GRCm39) L336Q probably damaging Het
Serpina1a G T 12: 103,826,679 (GRCm39) probably benign Het
Shank3 G A 15: 89,416,656 (GRCm39) R265Q probably damaging Het
Slc22a22 C T 15: 57,110,928 (GRCm39) R433H probably damaging Het
Slc22a26 A G 19: 7,779,726 (GRCm39) I30T probably benign Het
Spz1 A T 13: 92,711,992 (GRCm39) N161K possibly damaging Het
Tacc2 A G 7: 130,330,492 (GRCm39) R259G probably damaging Het
Tpcn2 G A 7: 144,810,257 (GRCm39) A649V probably benign Het
Trank1 C G 9: 111,194,984 (GRCm39) R1003G probably damaging Het
Tril T A 6: 53,796,559 (GRCm39) H221L possibly damaging Het
Unc79 C T 12: 103,071,120 (GRCm39) T1305I probably damaging Het
Unc80 C T 1: 66,722,350 (GRCm39) A2988V possibly damaging Het
Vinac1 A C 2: 128,879,976 (GRCm39) V650G probably benign Het
Vmn1r81 A T 7: 11,994,599 (GRCm39) M3K probably damaging Het
Vmn2r78 A T 7: 86,603,466 (GRCm39) D548V probably damaging Het
Vwa3b G A 1: 37,084,112 (GRCm39) R95Q probably damaging Het
Wdr6 G A 9: 108,452,093 (GRCm39) H597Y probably benign Het
Yme1l1 C T 2: 23,084,774 (GRCm39) T624I probably damaging 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
R3804: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
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'- TCATGTTACATGCCCCAGAC -3'
(R):5'- GCCAACATACTGTACATGCCTC -3'

Sequencing Primer
(F):5'- ATGTTACATGCCCCAGACTTTCTC -3'
(R):5'- GTCACACAGCAGATATACATTCCTG -3'
Posted On 2018-08-01