Gene Summary

Name:
topoisomerase (DNA) III alpha
Synonyms:
Top IIIa

IMPC Data Collections

IMPC Phenotype Summary

Significant
Not Significant
Not tested

Phenotypes

The IMPC applies a panel of phenotyping screens to characterise single-gene knockout mice by comparison to wild types. Click on the different tabs to visualise significant phenotypes identified by the IMPC, as well as all data that was measured.

Phenotype System Allele Zyg Sex Life Stage P Value
embryonic lethality prior to organogenesis Top3atm1b(EUCOMM)Hmgu HOM   E9.5 0.00
impaired pupillary reflex Top3atm1b(EUCOMM)Hmgu HET Early adult 1.06×10-05
preweaning lethality, complete penetrance Top3atm1b(EUCOMM)Hmgu HOM   Early adult 0.00

Download data as:  TSV  XLS

Select physiological systems to view:
Viewing: all phenotypes
Select physiological systems to view:
Viewing: all phenotypes

lacZ Expression

An assay measuring the expression of lacZ shows the tissue where the gene is expressed.

Anatomy Images Zygosity Mutant Expr
Adrenal gland  Section images heterozygote 50% (1 of 2)
Aorta  Section images heterozygote 100% (2 of 2)
Brain  Section images heterozygote 0.0% (0 of 2)
Brainstem  Section images heterozygote 50% (1 of 2)
Cartilage tissue  Section images heterozygote 100% (2 of 2)
Cerebellum  Section images heterozygote 100% (2 of 2)
Epididymis  Section images heterozygote 50% (1 of 2)
Esophagus  Section images heterozygote 100% (2 of 2)
Eye  Section images heterozygote 100% (2 of 2)
Heart  Section images heterozygote 100% (2 of 2)
Kidney  Section images heterozygote 100% (2 of 2)
Large intestine  Section images heterozygote 100% (2 of 2)
Lung  Section images heterozygote 100% (2 of 2)
Mammary gland  Section images heterozygote 50% (1 of 2)
Ovary  Section images heterozygote 50% (1 of 2)
Oviduct  Section images heterozygote 50% (1 of 2)
Pancreas  Section images heterozygote 100% (2 of 2)
Peripheral nervous system  Section images heterozygote 100% (2 of 2)
Pituitary gland  Section images heterozygote 50% (1 of 2)
Small intestine  Section images heterozygote 100% (2 of 2)
Spinal cord  Section images heterozygote 100% (2 of 2)
Stomach  Section images heterozygote 100% (2 of 2)
Testis  Section images heterozygote 50% (1 of 2)
Thymus  Section images heterozygote 100% (2 of 2)
Urinary bladder  Section images heterozygote 100% (2 of 2)
Uterus  Section images heterozygote 50% (1 of 2)
Vascular system  Section images heterozygote 100% (2 of 2)
Brown adipose tissue N/A heterozygote 0.0% (0 of 2)
Cerebral cortex N/A heterozygote 0.0% (0 of 2)
Hippocampus N/A heterozygote 0.0% (0 of 2)
Hypothalamus N/A heterozygote 0.0% (0 of 2)
Liver N/A heterozygote 0.0% (0 of 2)
Lower urinary tract N/A heterozygote Not available
Lymph node N/A heterozygote 0.0% (0 of 2)
Midbrain N/A heterozygote 0.0% (0 of 2)
Olfactory lobe N/A heterozygote 0.0% (0 of 2)
Peyer's patch N/A heterozygote 0.0% (0 of 2)
Prostate gland N/A heterozygote Not available
Skeletal muscle N/A heterozygote 0.0% (0 of 2)
Skin N/A heterozygote 0.0% (0 of 2)
Spleen N/A heterozygote 0.0% (0 of 2)
Striatum N/A heterozygote 0.0% (0 of 2)
Submandibular gland N/A heterozygote 0.0% (0 of 2)
Thalamus N/A heterozygote 0.0% (0 of 2)
Thyroid gland N/A heterozygote 0.0% (0 of 2)
Trachea N/A heterozygote 0.0% (0 of 2)
Vesicular gland N/A heterozygote Not available
White adipose tissue N/A heterozygote 0.0% (0 of 2)

An assay measuring the expression of lacZ shows the tissue where the gene is expressed.

Anatomy Images Zygosity Mutant Expr
Embryo N/A heterozygote 100% (2 of 2)
Brain N/A heterozygote 100% (2 of 2)
Dorsal root ganglion N/A heterozygote 100% (2 of 2)
Ear N/A heterozygote 100% (2 of 2)
Eye N/A heterozygote 100% (2 of 2)
Footplate N/A heterozygote 100% (2 of 2)
Forebrain N/A heterozygote 100% (2 of 2)
Forelimb N/A heterozygote 100% (2 of 2)
Fronto-nasal process N/A heterozygote Ambiguous
Handplate N/A heterozygote 100% (2 of 2)
Head N/A heterozygote 100% (2 of 2)
Heart N/A heterozygote 100% (2 of 2)
Hindbrain N/A heterozygote 100% (2 of 2)
Hindlimb N/A heterozygote 100% (2 of 2)
Liver N/A heterozygote 0.0% (0 of 2)
Lung N/A heterozygote Ambiguous
Mandibular process N/A heterozygote 100% (2 of 2)
Maxillary process N/A heterozygote 100% (2 of 2)
Midbrain N/A heterozygote 100% (2 of 2)
Nose N/A heterozygote 100% (2 of 2)
Oral cavity N/A heterozygote Ambiguous
Skin N/A heterozygote 100% (2 of 2)
Spinal cord N/A heterozygote 100% (2 of 2)
Tail somite N/A heterozygote 0.0% (0 of 2)
Tail N/A heterozygote 100% (2 of 2)

Background staining occurs in wild type mice and embryos at an incidental rate.

Anatomy Background staining in controls (WT)
adrenal gland 0.0%
aorta 0.0%
brain 0.0%
brainstem 0.0%
brown adipose tissue 0.0%
cartilage tissue 0.0%
cerebellum 0.0%
cerebral cortex 0.0%
epididymis Unavailable
esophagus 0.0%
eye 0.0%
heart 0.0%
hippocampus 0.0%
hypothalamus 0.0%
kidney 0.0%
large intestine 0.0%
liver 0.0%
lower urinary tract 0.0%
lung 0.0%
lymph node 0.0%
mammary gland 0.0%
midbrain 0.0%
olfactory lobe 0.0%
ovary 0.0%
oviduct 0.0%
pancreas 0.0%
peripheral nervous system 0.0%
peyers patch 0.0%
pituitary gland 0.0%
prostate gland 0.0%
skeletal muscle 0.0%
skin 0.0%
small intestine 0.0%
spinal cord 0.0%
spleen 0.0%
stomach 0.0%
striatum 0.0%
submandibular gland 0.0%
testis 0.0%
thalamus 0.0%
thymus 0.0%
thyroid gland 0.0%
trachea 0.0%
urinary bladder
uterus 0.0%
vascular system 0.0%
vesicular gland Unavailable
white adipose tissue 0.0%

Background staining occurs in wild type mice and embryos at an incidental rate.

Background staining occurs in wild type embryos at a measurable rate.

Anatomy Background staining in controls(WT)
brain 0.0%
dorsal root ganglion Ambiguous
ear 0.0%
embryo 0.0%
eye 0.0%
footplate 0.0%
forebrain 0.0%
forelimb 0.0%
fronto-nasal process Ambiguous
handplate 0.0%
head 0.0%
heart 0.0%
hindbrain 0.0%
hindlimb 0.0%
liver 0.0%
lung 0.0%
mandibular process 0.0%
maxillary process 0.0%
midbrain 0.0%
nose Ambiguous
oral cavity 0.0%
skin 0.0%
spinal cord Ambiguous
tail 0.0%
tail somite group 0.0%

Associated Images

Images submitted by IMPC centres for a selection of procedures. Each set of images is available to view in our image comparator.

X-ray

XRay Images Whole Body Dorso Ventral

10 Images

X-ray

XRay Images Whole Body Lateral Orientation

10 Images

Adult LacZ

LacZ Images Section

27 Images

X-ray

XRay Images Forepaw

10 Images

Embryo LacZ

LacZ images wholemount

8 Images

X-ray

XRay Images Skull Lateral Orientation

10 Images

X-ray

XRay Images Skull Dorso Ventral Orientation

10 Images

Auditory Brain Stem Response

Click-evoked + 6 to 30kHz tone waveforms (pdf format)

8 Images

Human diseases caused by Top3a mutations

The analysis uses data from IMPC, along with published data on other mouse mutants, in comparison to human disease reports in OMIM, Orphanet, and DECIPHER.

Phenotype comparisons summarize the similarity of mouse phenotypes with human disease phenotypes.

The table below shows human diseases associated to Top3a by orthology or direct annotation.

Disease Similarity of
phenotypes
Matching phenotypes Source
Microcephaly, Growth Restriction, And Increased Sister Chromatid Exchange 2
OMIM:618097
Progressive External Ophthalmoplegia With Mitochondrial Dna Deletions, Autosomal Recessive 5
OMIM:618098

The table below shows human diseases predicted to be associated to Top3a by phenotypic similarity.

Disease Similarity of
phenotypes
Matching phenotypes Source
Acute Zonal Occult Outer Retinopathy
Macular drusen, Retinal pigment epithelial atrophy, Abnormal retinal vascular morphology, Retinal... ORPHA:284454
Cherubism
Macular scar, Marcus Gunn pupil, Optic neuropathy OMIM:118400
Microcephaly, Growth Restriction, And Increased Sister Chromatid Exchange 2
OMIM:618097
Progressive External Ophthalmoplegia With Mitochondrial Dna Deletions, Autosomal Recessive 5
OMIM:618098

Histopathology

Summary table of phenotypes displayed during the Histopathology procedure which are considered significant. Full histopathology data table, including submitted images, can be accessed by clicking any row in this table.

There is no histopathology data for Top3a

IMPC related publications

The table below lists publications which used either products generated by the IMPC or data produced by the phenotyping efforts of the IMPC. These publications have also been associated to Top3a.

No publications found that use IMPC mice or data for Top3a.

Order Mouse and ES Cells

All available products are supplied via our member's centres or partnerships. When ordering a product from the IMPC you will be redirected to one of their websites or prompted to start an email.

MGI Allele Allele Type Produced
Top3atm1b(EUCOMM)Hmgu Reporter-tagged deletion allele (with selection cassette) Mice
Top3atm1a(EUCOMM)Hmgu KO first allele (reporter-tagged insertion with conditional potential) Mice, Targeting vectors, ES Cells
Top3atm1(KOMP)Vlcg Reporter-tagged deletion allele (with selection cassette) ES Cells

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