Incidental Mutation 'R1608:Top1'
ID 176609
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 039645-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R1608 (G1)
Quality Score 225
Status Not validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to A at 160545515 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Asparagine to Lysine at position 294 (N294K)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably benign
Transcript: ENSMUST00000109468
AA Change: N294K

PolyPhen 2 Score 0.015 (Sensitivity: 0.96; Specificity: 0.79)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: N294K

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
Coding Region Coverage
  • 1x: 99.0%
  • 3x: 98.1%
  • 10x: 95.5%
  • 20x: 89.7%
Validation Efficiency
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: 46 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adamts15 A G 9: 30,813,775 (GRCm39) S797P probably damaging Het
Akap9 T C 5: 4,011,783 (GRCm39) Y829H probably damaging Het
Anp32a A G 9: 62,279,375 (GRCm39) D74G probably damaging Het
B3gat1 T C 9: 26,663,112 (GRCm39) I13T probably damaging Het
Cbfa2t3 A T 8: 123,374,448 (GRCm39) V99D probably damaging Het
Celsr2 C T 3: 108,309,799 (GRCm39) C1600Y probably damaging Het
Ddx31 T A 2: 28,749,078 (GRCm39) N291K probably damaging Het
Dennd1a T G 2: 37,742,446 (GRCm39) M3L probably benign Het
Dnah12 C T 14: 26,488,147 (GRCm39) P1017L probably damaging Het
Dnajc6 A T 4: 101,456,364 (GRCm39) D86V probably damaging Het
Evx2 T G 2: 74,488,195 (GRCm39) K208N probably damaging Het
F13a1 A G 13: 37,052,785 (GRCm39) V718A probably damaging Het
Fcho2 T C 13: 98,862,706 (GRCm39) D757G probably benign Het
Fmnl2 A G 2: 52,995,549 (GRCm39) E424G probably damaging Het
Fryl C T 5: 73,232,094 (GRCm39) W424* probably null Het
Gata3 G T 2: 9,879,579 (GRCm39) Y97* probably null Het
Gm15446 T A 5: 110,090,323 (GRCm39) C192S probably damaging Het
Hdac10 A T 15: 89,009,521 (GRCm39) D470E probably benign Het
Ier2 A G 8: 85,389,055 (GRCm39) L109P probably benign Het
Iftap T C 2: 101,440,916 (GRCm39) E29G probably damaging Het
Kcnh2 T C 5: 24,527,217 (GRCm39) T559A probably benign Het
Khk C T 5: 31,087,938 (GRCm39) A204V probably damaging Het
Kndc1 T A 7: 139,507,321 (GRCm39) M1169K possibly damaging Het
Krtap31-1 A G 11: 99,798,919 (GRCm39) S41G probably benign Het
Nabp1 T C 1: 51,512,162 (GRCm39) probably null Het
Nphp3 A G 9: 103,913,039 (GRCm39) D939G probably benign Het
Or5e1 A T 7: 108,354,309 (GRCm39) N82I probably damaging Het
Plcg2 T C 8: 118,340,974 (GRCm39) I1089T possibly damaging Het
Ptk2 A T 15: 73,134,424 (GRCm39) D558E probably damaging Het
Serpinb6d A G 13: 33,853,112 (GRCm39) D168G probably benign Het
Shisa8 G A 15: 82,092,756 (GRCm39) P189L probably damaging Het
Shkbp1 A G 7: 27,054,204 (GRCm39) V89A probably benign Het
Slc40a1 C T 1: 45,950,457 (GRCm39) A332T probably damaging Het
Slc44a3 A T 3: 121,291,496 (GRCm39) Y373* probably null Het
Slf2 T C 19: 44,937,440 (GRCm39) V722A probably benign Het
Spanxn4 A G 12: 62,734,624 (GRCm39) noncoding transcript Het
Stag3 T A 5: 138,296,901 (GRCm39) probably null Het
Tanc1 T C 2: 59,628,038 (GRCm39) I612T possibly damaging Het
Thbs2 T A 17: 14,906,043 (GRCm39) M286L probably benign Het
Tpr T G 1: 150,302,644 (GRCm39) L1381V probably damaging Het
Trpm8 T G 1: 88,254,154 (GRCm39) S126A probably benign Het
Ttc41 A G 10: 86,611,857 (GRCm39) Y1075C probably damaging Het
Ubox5 C T 2: 130,439,376 (GRCm39) G418D probably benign Het
Vmn1r67 T C 7: 10,180,907 (GRCm39) V57A possibly damaging Het
Zbtb5 T C 4: 44,993,500 (GRCm39) H628R probably damaging Het
Zfp810 T C 9: 22,190,216 (GRCm39) I231V 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
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
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'- CTGATGCCTTTACACAGGGTCAGTC -3'
(R):5'- AGATAGCTGCCAGTTAGCACAACAC -3'

Sequencing Primer
(F):5'- TTCACCATCCAAGGGCATTC -3'
(R):5'- GAATTCACTGTTGTGTCACAAGAAG -3'
Posted On 2014-04-24