Incidental Mutation 'R6279:Top3a'
ID507844
Institutional Source Beutler Lab
Gene Symbol Top3a
Ensembl Gene ENSMUSG00000002814
Gene Nametopoisomerase (DNA) III alpha
SynonymsTop IIIa
MMRRC Submission
Accession Numbers
Is this an essential gene? Essential (E-score: 1.000) question?
Stock #R6279 (G1)
Quality Score209.009
Status Validated
Chromosome11
Chromosomal Location60740058-60777365 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to C at 60749408 bp
ZygosityHeterozygous
Amino Acid Change Aspartic acid to Glycine at position 488 (D488G)
Ref Sequence ENSEMBL: ENSMUSP00000002891 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000002891] [ENSMUST00000102668] [ENSMUST00000117743] [ENSMUST00000120417]
Predicted Effect probably benign
Transcript: ENSMUST00000002891
AA Change: D488G

PolyPhen 2 Score 0.018 (Sensitivity: 0.95; Specificity: 0.80)
SMART Domains Protein: ENSMUSP00000002891
Gene: ENSMUSG00000002814
AA Change: D488G

DomainStartEndE-ValueType
TOPRIM 35 169 5.04e-24 SMART
TOP1Bc 172 269 4.99e-37 SMART
TOP1Ac 315 569 1.47e-107 SMART
Pfam:zf-C4_Topoisom 655 694 1.7e-15 PFAM
Pfam:zf-GRF 813 854 9.7e-23 PFAM
low complexity region 884 896 N/A INTRINSIC
Pfam:zf-GRF 897 941 7.9e-24 PFAM
ZnF_C2HC 985 1001 7.06e-2 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000102668
AA Change: D488G

PolyPhen 2 Score 0.008 (Sensitivity: 0.96; Specificity: 0.76)
SMART Domains Protein: ENSMUSP00000099729
Gene: ENSMUSG00000002814
AA Change: D488G

DomainStartEndE-ValueType
TOPRIM 35 169 5.04e-24 SMART
TOP1Bc 172 269 4.99e-37 SMART
TOP1Ac 315 569 1.47e-107 SMART
Pfam:zf-C4_Topoisom 655 694 5.9e-16 PFAM
Pfam:zf-GRF 813 854 2.6e-21 PFAM
low complexity region 884 896 N/A INTRINSIC
Pfam:zf-GRF 897 941 4.2e-22 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000117743
AA Change: D463G

PolyPhen 2 Score 0.004 (Sensitivity: 0.98; Specificity: 0.59)
SMART Domains Protein: ENSMUSP00000113057
Gene: ENSMUSG00000002814
AA Change: D463G

DomainStartEndE-ValueType
TOPRIM 10 144 5.04e-24 SMART
TOP1Bc 147 244 4.99e-37 SMART
TOP1Ac 290 544 1.47e-107 SMART
Pfam:zf-C4_Topoisom 630 669 4.6e-16 PFAM
ZnF_C2HC 755 771 7.06e-2 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000120417
AA Change: D463G

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000113653
Gene: ENSMUSG00000002814
AA Change: D463G

DomainStartEndE-ValueType
TOPRIM 10 144 5.04e-24 SMART
TOP1Bc 147 244 4.99e-37 SMART
TOP1Ac 290 544 1.47e-107 SMART
Pfam:zf-C4_Topoisom 630 666 1.9e-13 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000124799
Meta Mutation Damage Score 0.052 question?
Coding Region Coverage
  • 1x: 99.9%
  • 3x: 99.6%
  • 10x: 98.1%
  • 20x: 94.5%
Validation Efficiency 97% (58/60)
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 reducing the number of supercoils and altering the topology of DNA. This enzyme forms a complex with BLM which functions in the regulation of recombination in somatic cells. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Mar 2016]
PHENOTYPE: Mice homozygous for a null allele die shortly after implantation and the induction of decidual reaction. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 59 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
3110001I22Rik T C 16: 13,677,270 S78P probably damaging Het
Ap1s3 T C 1: 79,625,123 K56E probably damaging Het
Apob C T 12: 8,007,769 R2084* probably null Het
Arid1b C A 17: 5,341,999 L1935M probably damaging Het
Arntl2 A G 6: 146,821,946 Y258C probably damaging Het
Bag6 T C 17: 35,138,601 V122A probably damaging Het
Cacna1e T A 1: 154,425,932 T1685S probably benign Het
Cd163 T A 6: 124,317,991 C671* probably null Het
Cul3 A G 1: 80,286,952 V211A probably damaging Het
Cyp2d22 C A 15: 82,373,968 K150N probably damaging Het
Dnah6 A T 6: 73,065,815 I3208N probably damaging Het
Dnah7b T C 1: 46,325,886 F3609S probably damaging Het
Endod1 T C 9: 14,356,870 T440A probably benign Het
Exph5 A G 9: 53,373,946 T776A possibly damaging Het
Faap24 A C 7: 35,396,284 V12G possibly damaging Het
Gabrg2 T C 11: 42,000,523 probably null Het
Ggta1 A G 2: 35,407,994 Y148H probably damaging Het
Hspe1 T A 1: 55,090,701 probably null Het
Il12a A T 3: 68,697,979 I193F probably damaging Het
Il2rb T C 15: 78,481,538 N520D possibly damaging Het
Kat6a A G 8: 22,939,612 Q1661R unknown Het
Klhl18 T A 9: 110,436,062 N362I probably benign Het
Lrba A G 3: 86,348,864 D1171G probably benign Het
Mef2b C T 8: 70,167,119 T285I possibly damaging Het
Mmrn2 T C 14: 34,397,657 S198P probably benign Het
Msh6 T C 17: 87,980,249 W106R probably damaging Het
Nek5 T A 8: 22,107,721 M281L probably benign Het
Olfr1202 A T 2: 88,817,375 D68V probably damaging Het
Olfr1387 T A 11: 49,460,212 C178S probably damaging Het
Olfr1493-ps1 A G 19: 13,726,665 I135V probably benign Het
Olfr596 A T 7: 103,310,429 H236L probably benign Het
Olfr676 G A 7: 105,035,671 V158M probably benign Het
Pcdhgb5 T A 18: 37,732,699 F516I probably damaging Het
Pde10a T C 17: 8,978,957 I1026T probably damaging Het
Pde4dip A C 3: 97,699,180 L2126R probably damaging Het
Pds5b T A 5: 150,723,248 N167K possibly damaging Het
Pkmyt1 C T 17: 23,732,502 P10L probably benign Het
Prr5l A T 2: 101,717,420 Y253* probably null Het
Rdh9 A G 10: 127,776,758 T92A probably benign Het
Reln A G 5: 21,896,841 Y3364H probably damaging Het
Rufy4 T A 1: 74,133,224 S369T probably benign Het
Ryr1 A T 7: 29,087,428 M1587K possibly damaging Het
Ryr2 T A 13: 11,680,999 H2994L probably damaging Het
Safb2 T C 17: 56,563,226 H950R possibly damaging Het
Sez6 T C 11: 77,976,541 V788A possibly damaging Het
Sfrp4 G A 13: 19,623,853 A141T probably damaging Het
Sh3d19 A T 3: 86,104,102 I332F possibly damaging Het
Skor1 A T 9: 63,145,314 W458R probably damaging Het
Slc13a2 CGTTATCTGT CGT 11: 78,403,480 probably benign Het
Slc19a2 C T 1: 164,256,775 T78M probably damaging Het
Slc8a3 T A 12: 81,314,978 I356F probably damaging Het
Slk A G 19: 47,642,004 T1205A probably damaging Het
Tcte1 T C 17: 45,533,289 S64P possibly damaging Het
Tnpo1 G A 13: 98,890,708 P25L possibly damaging Het
Tshz1 A T 18: 84,015,311 V324D probably damaging Het
Ttc21a T C 9: 119,961,839 S884P possibly damaging Het
Usp17lb A G 7: 104,840,691 L342P probably damaging Het
Vwa3a A G 7: 120,782,400 N3S probably damaging Het
Zfp672 A T 11: 58,317,268 C76S probably damaging Het
Other mutations in Top3a
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01712:Top3a APN 11 60761736 missense probably damaging 1.00
IGL02935:Top3a APN 11 60762528 missense possibly damaging 0.53
R0057:Top3a UTSW 11 60740684 missense probably benign
R0057:Top3a UTSW 11 60740684 missense probably benign
R0369:Top3a UTSW 11 60742789 missense probably damaging 1.00
R1171:Top3a UTSW 11 60750593 missense probably benign 0.02
R1459:Top3a UTSW 11 60759362 missense probably damaging 1.00
R1621:Top3a UTSW 11 60750607 missense probably damaging 1.00
R1812:Top3a UTSW 11 60759362 missense probably damaging 1.00
R1839:Top3a UTSW 11 60753888 missense probably damaging 1.00
R1873:Top3a UTSW 11 60747984 nonsense probably null
R2004:Top3a UTSW 11 60742489 missense probably damaging 0.99
R2277:Top3a UTSW 11 60745874 missense possibly damaging 0.95
R2406:Top3a UTSW 11 60756012 missense probably damaging 1.00
R2418:Top3a UTSW 11 60748016 missense possibly damaging 0.95
R3196:Top3a UTSW 11 60759356 missense probably damaging 1.00
R3879:Top3a UTSW 11 60743939 missense possibly damaging 0.92
R4695:Top3a UTSW 11 60742412 missense probably benign 0.40
R4715:Top3a UTSW 11 60742997 nonsense probably null
R4768:Top3a UTSW 11 60762490 missense probably damaging 1.00
R4910:Top3a UTSW 11 60752378 splice site probably benign
R5305:Top3a UTSW 11 60762539 missense possibly damaging 0.56
R5387:Top3a UTSW 11 60762490 missense probably damaging 1.00
R5419:Top3a UTSW 11 60762522 missense probably damaging 1.00
R5806:Top3a UTSW 11 60776920 critical splice donor site probably null
R6162:Top3a UTSW 11 60745937 missense probably damaging 1.00
R6300:Top3a UTSW 11 60749408 missense probably benign 0.02
R6381:Top3a UTSW 11 60744023 missense probably damaging 1.00
R6383:Top3a UTSW 11 60749459 missense probably benign 0.30
R6767:Top3a UTSW 11 60750753 missense possibly damaging 0.84
R6919:Top3a UTSW 11 60749493 missense probably damaging 1.00
R7299:Top3a UTSW 11 60748148 missense probably damaging 0.99
R7301:Top3a UTSW 11 60748148 missense probably damaging 0.99
X0063:Top3a UTSW 11 60750644 nonsense probably null
X0065:Top3a UTSW 11 60763398 missense probably damaging 1.00
Predicted Primers PCR Primer
(F):5'- ACCATTTCCACAGTGCTGGG -3'
(R):5'- TCTAGAAAAGCACGGTTCTGAAAG -3'

Sequencing Primer
(F):5'- CACAGTGCTGGGCTGGAAG -3'
(R):5'- CACGGTTCTGAAAGGAGTTTCAC -3'
Posted On2018-03-15