Incidental Mutation 'R6292:Top1'
ID 508484
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 044461-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R6292 (G1)
Quality Score 225.009
Status Validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to T at 160540061 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Tyrosine to Phenylalanine at position 213 (Y213F)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably benign
Transcript: ENSMUST00000109468
AA Change: Y213F

PolyPhen 2 Score 0.192 (Sensitivity: 0.92; Specificity: 0.87)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: Y213F

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
Predicted Effect noncoding transcript
Transcript: ENSMUST00000164694
Coding Region Coverage
  • 1x: 99.9%
  • 3x: 99.6%
  • 10x: 98.2%
  • 20x: 94.5%
Validation Efficiency 100% (50/50)
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: 47 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Acacb T A 5: 114,338,312 (GRCm39) V709E probably damaging Het
Ankrd33b C T 15: 31,325,231 (GRCm39) probably null Het
Apaf1 T C 10: 90,827,425 (GRCm39) T1202A possibly damaging Het
Apip G T 2: 102,922,812 (GRCm39) C210F probably benign Het
Chd9 A T 8: 91,659,550 (GRCm39) H170L probably benign Het
Clec16a T C 16: 10,378,015 (GRCm39) probably null Het
Ep300 T A 15: 81,500,935 (GRCm39) probably benign Het
Etl4 C T 2: 20,748,384 (GRCm39) H39Y probably damaging Het
Gdap1l1 A T 2: 163,293,427 (GRCm39) I218F probably damaging Het
Gm5141 A T 13: 62,922,252 (GRCm39) C306S probably damaging Het
Gm9961 C T 16: 11,748,336 (GRCm39) noncoding transcript Het
Gpr27 C T 6: 99,670,619 (GRCm39) S327L possibly damaging Het
Hectd3 A C 4: 116,856,005 (GRCm39) T435P probably damaging Het
Hs3st1 T A 5: 39,772,133 (GRCm39) Q170L possibly damaging Het
Hykk T C 9: 54,828,110 (GRCm39) probably null Het
Lilra5 T C 7: 4,241,338 (GRCm39) S92P possibly damaging Het
Lrig1 A T 6: 94,593,426 (GRCm39) N418K probably damaging Het
Miga1 A G 3: 152,023,356 (GRCm39) F232L probably benign Het
Mkrn2 T A 6: 115,590,295 (GRCm39) M217K probably damaging Het
Myh7b A T 2: 155,474,316 (GRCm39) Q1677L probably damaging Het
N4bp1 T C 8: 87,579,867 (GRCm39) E645G probably damaging Het
Nckap5 T C 1: 125,842,752 (GRCm39) K1752E probably damaging Het
Nek1 A G 8: 61,507,770 (GRCm39) probably null Het
Ntng1 T C 3: 110,051,202 (GRCm39) probably benign Het
Nup133 A G 8: 124,644,176 (GRCm39) V730A probably benign Het
Or2t44 T A 11: 58,677,063 (GRCm39) M1K probably null Het
Or51v14 T A 7: 103,261,386 (GRCm39) H58L probably damaging Het
Paqr6 C T 3: 88,275,205 (GRCm39) P213S probably damaging Het
Pign A T 1: 105,512,802 (GRCm39) V627D possibly damaging Het
Rasal1 T A 5: 120,797,685 (GRCm39) V139E probably damaging Het
Scgb1b24 G T 7: 33,443,577 (GRCm39) A79S possibly damaging Het
Slc25a28 T C 19: 43,653,031 (GRCm39) D210G probably benign Het
Slc38a3 A T 9: 107,532,353 (GRCm39) I393N possibly damaging Het
Slc41a2 T C 10: 83,090,790 (GRCm39) N465D probably damaging Het
Slc5a5 G A 8: 71,343,822 (GRCm39) T160I probably damaging Het
Smarca2 C T 19: 26,608,292 (GRCm39) A117V probably damaging Het
Sorcs2 C T 5: 36,219,931 (GRCm39) R371H probably damaging Het
Taf4 A G 2: 179,565,780 (GRCm39) S872P probably damaging Het
Tdrd3 G T 14: 87,743,690 (GRCm39) C540F probably benign Het
Thumpd1 A T 7: 119,319,897 (GRCm39) L23Q probably benign Het
Txndc5 T C 13: 38,712,160 (GRCm39) probably null Het
Unc79 C A 12: 103,108,991 (GRCm39) A2005D possibly damaging Het
Upb1 T C 10: 75,274,005 (GRCm39) L344P probably damaging Het
Vmn1r72 T A 7: 11,403,579 (GRCm39) S290C probably benign Het
Vmn2r103 A G 17: 20,013,866 (GRCm39) I219M possibly damaging Het
Wapl A G 14: 34,451,152 (GRCm39) T729A probably damaging Het
Washc5 C T 15: 59,227,783 (GRCm39) R393H 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
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'- CAGTTTGCTTGAAATTGCTGCTC -3'
(R):5'- ATTCCTTTTCCCAAGCCACACATAG -3'

Sequencing Primer
(F):5'- GCTGCTCTTTTCAGTGAGACACAG -3'
(R):5'- CTAGCTAGGACTGTGCAATATAGGC -3'
Posted On 2018-03-15