Mutagenetix > Incidental Mutation

Incidental Mutation 'R7586:Top3b'

587168

Institutional Source

Beutler Lab

Gene Symbol

Top3b

Ensembl Gene

ENSMUSG00000022779

Gene Name

topoisomerase (DNA) III beta

Synonyms

Topo III beta

MMRRC Submission

045668-MU

Accession Numbers

Essential gene?

Probably non essential (E-score: 0.248) question?

Stock #

R7586 (G1)

Quality Score

225.009

Status

Validated

Chromosome

Chromosomal Location

16688600-16710854 bp(+) (GRCm39)

Type of Mutation

missense

DNA Base Change (assembly)

G to A at 16709232 bp (GRCm39)

Zygosity

Heterozygous

Amino Acid Change

Arginine to Histidine at position 640 (R640H)

Ref Sequence

ENSEMBL: ENSMUSP00000023465 (fasta)

Gene Model

predicted gene model for transcript(s): [ENSMUST00000023465] [ENSMUST00000232581]

AlphaFold

Q9Z321

Predicted Effect

probably benign
Transcript: ENSMUST00000023465
AA Change: R640H

PolyPhen 2 Score 0.445 (Sensitivity: 0.89; Specificity: 0.90)

SMART Domains

Protein: ENSMUSP00000023465
Gene: ENSMUSG00000022779
AA Change: R640H

Domain	Start	End	E-Value	Type
TOPRIM	3	138	2.64e-27	SMART
TOP1Bc	146	242	3.84e-38	SMART
TOP1Ac	289	545	2.28e-104	SMART
low complexity region	824	850	N/A	INTRINSIC

Predicted Effect

probably benign
Transcript: ENSMUST00000232581
AA Change: R640H

PolyPhen 2 Score 0.445 (Sensitivity: 0.89; Specificity: 0.90)

Coding Region Coverage

1x: 100.0%
3x: 99.9%
10x: 99.7%
20x: 98.9%

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 relaxing the supercoils and altering the topology of DNA. The enzyme interacts with DNA helicase SGS1 and plays a role in DNA recombination, cellular aging and maintenance of genome stability. Low expression of this gene may be related to higher survival rates in breast cancer patients. This gene has a pseudogene on chromosome 22. Alternate splicing results in multiple transcript variants. Additional alternatively spliced transcript variants of this gene have been described, but their full-length nature is not known. [provided by RefSeq, Aug 2013]
PHENOTYPE: Homozygous null mice develop to maturity but die prematurely showing enlargement of lymphatic organs and glomerulonephritis. Intercrossing of mutant mice progressively results in infertility that is correlated to increased aneuploidy in germ cells. [provided by MGI curators]

Allele List at MGI

Other mutations in this stock

Total: 65 list
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
Ankdd1a	C	T	9: 65,409,466 (GRCm39)		probably null	Het
Ankrd31	A	G	13: 96,968,562 (GRCm39)	E733G	possibly damaging	Het
Cars2	C	T	8: 11,580,321 (GRCm39)	W239*	probably null	Het
Catsperz	A	T	19: 6,899,929 (GRCm39)	L192*	probably null	Het
Ccdc168	G	A	1: 44,099,173 (GRCm39)	R642W	probably benign	Het
Cdh3	T	C	8: 107,237,975 (GRCm39)		probably null	Het
Cfh	C	T	1: 140,075,459 (GRCm39)	V260M	probably damaging	Het
Clcn4	T	A	7: 7,296,958 (GRCm39)	S227C	probably benign	Het
Cntn3	A	T	6: 102,397,388 (GRCm39)	W62R	probably damaging	Het
Col27a1	C	A	4: 63,143,278 (GRCm39)	A322D	probably damaging	Het
Egflam	C	T	15: 7,238,082 (GRCm39)	G934S	probably damaging	Het
Eloa	A	G	4: 135,734,510 (GRCm39)	V665A	probably damaging	Het
Epg5	A	G	18: 78,073,275 (GRCm39)	T2433A	probably benign	Het
Ercc5	A	G	1: 44,215,011 (GRCm39)	N848S	possibly damaging	Het
Fbrsl1	A	C	5: 110,526,020 (GRCm39)	F61V	probably damaging	Het
Fry	T	C	5: 150,349,683 (GRCm39)	Y1595H	probably damaging	Het
Fstl4	A	G	11: 52,963,256 (GRCm39)	N213D	probably benign	Het
Gab2	C	T	7: 96,950,645 (GRCm39)	P446L	probably damaging	Het
Ganab	A	T	19: 8,888,716 (GRCm39)	Y552F	possibly damaging	Het
Gfy	C	T	7: 44,826,962 (GRCm39)	R378Q	probably damaging	Het
Gm3285	T	C	10: 77,697,875 (GRCm39)	V8A	unknown	Het
Grip1	A	T	10: 119,913,043 (GRCm39)		probably null	Het
Gtf3c3	A	G	1: 54,442,752 (GRCm39)	L764P	probably damaging	Het
Igfbp2	A	T	1: 72,888,307 (GRCm39)	M150L	probably benign	Het
Jakmip2	C	T	18: 43,673,676 (GRCm39)	R796Q	probably damaging	Het
Jpt1	T	A	11: 115,389,021 (GRCm39)	R141W	probably damaging	Het
Junb	T	C	8: 85,704,802 (GRCm39)	E86G	probably damaging	Het
Klhl41	A	T	2: 69,505,068 (GRCm39)	D457V	probably benign	Het
Lama2	T	C	10: 26,977,389 (GRCm39)	Y1930C	probably benign	Het
Med13	A	T	11: 86,161,828 (GRCm39)	I2167N	probably damaging	Het
Msh3	A	G	13: 92,485,840 (GRCm39)		probably benign	Het
Myo1b	A	C	1: 51,817,483 (GRCm39)	I593S	probably damaging	Het
Myo1c	A	T	11: 75,548,345 (GRCm39)	T16S	possibly damaging	Het
Ndufaf4	C	T	4: 24,901,829 (GRCm39)	L126F	probably damaging	Het
Nlrp9a	A	T	7: 26,256,721 (GRCm39)	N113I	possibly damaging	Het
Or5d43	T	A	2: 88,104,794 (GRCm39)	I200F	probably damaging	Het
Or5g23	G	C	2: 85,438,528 (GRCm39)	S242C	probably damaging	Het
Or5p6	T	A	7: 107,631,128 (GRCm39)	T141S	probably benign	Het
Pabpc6	A	T	17: 9,887,611 (GRCm39)	D313E	probably damaging	Het
Pcdhb2	G	T	18: 37,428,857 (GRCm39)	G277*	probably null	Het
Phkb	T	G	8: 86,756,226 (GRCm39)	V840G	probably damaging	Het
Pip4k2c	A	G	10: 127,034,955 (GRCm39)	F415S	probably damaging	Het
Ptprb	A	G	10: 116,179,779 (GRCm39)	E1112G	probably damaging	Het
Pum2	A	G	12: 8,797,206 (GRCm39)	D847G	probably damaging	Het
Qrich2	C	T	11: 116,346,450 (GRCm39)	R1458H	probably benign	Het
Rdh11	T	C	12: 79,231,957 (GRCm39)	Y199C	probably damaging	Het
Resf1	A	T	6: 149,228,291 (GRCm39)	N446Y	possibly damaging	Het
Scamp3	A	G	3: 89,087,673 (GRCm39)	Y171C	probably damaging	Het
Serpinb9b	T	C	13: 33,223,743 (GRCm39)	S312P	probably damaging	Het
Slain2	G	A	5: 73,123,165 (GRCm39)	S461N	probably benign	Het
Slc23a1	G	A	18: 35,758,891 (GRCm39)	T100I	probably damaging	Het
Spata31d1b	T	A	13: 59,866,194 (GRCm39)	I1114N	probably damaging	Het
Spinkl	A	G	18: 44,307,656 (GRCm39)	S2P	probably damaging	Het
Srrt	T	C	5: 137,300,457 (GRCm39)	N173S	probably damaging	Het
Stk24	C	T	14: 121,539,699 (GRCm39)	A166T	probably damaging	Het
Supt16	A	T	14: 52,411,013 (GRCm39)	V697E	probably damaging	Het
Taf6l	C	T	19: 8,761,210 (GRCm39)	E53K	probably damaging	Het
Tmem81	A	T	1: 132,435,511 (GRCm39)	I106F	probably damaging	Het
Tnxb	C	A	17: 34,935,382 (GRCm39)	L2561I	probably damaging	Het
Trpm7	A	T	2: 126,652,085 (GRCm39)	S1463T	probably benign	Het
Ttll3	CAAAGTAA	CAAAGTAAAGTAA	6: 113,376,118 (GRCm39)		probably null	Het
Tubal3	A	C	13: 3,978,198 (GRCm39)	D38A	possibly damaging	Het
Vps13a	T	A	19: 16,624,962 (GRCm39)	I2766F	probably benign	Het
Wwc1	A	T	11: 35,735,022 (GRCm39)	V951E	possibly damaging	Het
Zfp777	A	T	6: 48,006,152 (GRCm39)	M414K	probably benign	Het

Other mutations in Top3b

Allele	Source	Chr	Coord	Type	Predicted Effect	PPH Score
IGL00823:Top3b	APN	16	16,705,486 (GRCm39)	missense	probably damaging	0.97
IGL01512:Top3b	APN	16	16,709,286 (GRCm39)	missense	possibly damaging	0.74
IGL01552:Top3b	APN	16	16,705,687 (GRCm39)	splice site	probably benign
IGL01738:Top3b	APN	16	16,698,468 (GRCm39)	missense	probably benign	0.04
IGL02090:Top3b	APN	16	16,709,334 (GRCm39)	missense	possibly damaging	0.81
R0143:Top3b	UTSW	16	16,701,389 (GRCm39)	missense	probably damaging	0.97
R0883:Top3b	UTSW	16	16,697,301 (GRCm39)	splice site	probably benign
R1386:Top3b	UTSW	16	16,698,493 (GRCm39)	missense	probably benign	0.29
R1440:Top3b	UTSW	16	16,710,641 (GRCm39)	nonsense	probably null
R1958:Top3b	UTSW	16	16,702,166 (GRCm39)	missense	possibly damaging	0.52
R1970:Top3b	UTSW	16	16,701,383 (GRCm39)	missense	probably damaging	1.00
R4211:Top3b	UTSW	16	16,700,396 (GRCm39)	splice site	probably null
R4292:Top3b	UTSW	16	16,701,383 (GRCm39)	missense	probably damaging	1.00
R4307:Top3b	UTSW	16	16,707,481 (GRCm39)	splice site	probably benign
R4832:Top3b	UTSW	16	16,708,526 (GRCm39)	nonsense	probably null
R5047:Top3b	UTSW	16	16,709,282 (GRCm39)	missense	probably benign	0.00
R5364:Top3b	UTSW	16	16,704,834 (GRCm39)	missense	probably benign	0.00
R5590:Top3b	UTSW	16	16,709,441 (GRCm39)	intron	probably benign
R5604:Top3b	UTSW	16	16,707,399 (GRCm39)	nonsense	probably null
R5719:Top3b	UTSW	16	16,703,700 (GRCm39)	missense	probably damaging	1.00
R5969:Top3b	UTSW	16	16,701,429 (GRCm39)	critical splice donor site	probably null
R6018:Top3b	UTSW	16	16,710,756 (GRCm39)	missense	probably damaging	1.00
R6144:Top3b	UTSW	16	16,697,005 (GRCm39)	splice site	probably null
R6155:Top3b	UTSW	16	16,709,373 (GRCm39)	missense	probably damaging	1.00
R6341:Top3b	UTSW	16	16,696,935 (GRCm39)	missense	probably damaging	0.98
R6700:Top3b	UTSW	16	16,710,533 (GRCm39)	missense	possibly damaging	0.48
R7417:Top3b	UTSW	16	16,695,714 (GRCm39)	start gained	probably benign
R7747:Top3b	UTSW	16	16,705,585 (GRCm39)	missense	probably benign	0.17
R8382:Top3b	UTSW	16	16,705,867 (GRCm39)	missense	probably damaging	1.00
R8438:Top3b	UTSW	16	16,709,364 (GRCm39)	missense	probably benign	0.04
R9142:Top3b	UTSW	16	16,701,299 (GRCm39)	missense	probably damaging	1.00
R9311:Top3b	UTSW	16	16,700,563 (GRCm39)	critical splice donor site	probably null
R9630:Top3b	UTSW	16	16,710,354 (GRCm39)	missense	probably benign	0.03
X0011:Top3b	UTSW	16	16,708,053 (GRCm39)	missense	probably benign	0.00

Predicted Primers

PCR Primer
(F):5'- CAGCGGTTGAGGTATTTGCC -3'
(R):5'- ATGCTAAGTATGAACCTGAGGACAC -3'

Sequencing Primer
(F):5'- TGCCTGGCACTGAATTCTG -3'
(R):5'- ACCTTTCTTCATGTCTCGGAAGGG -3'

Posted On

2019-10-24