Mouse Strain information
APB ID 7623
Added 24/03/2014
Last Edited 18/08/2015
Strain nomenclature: B6.129-Gabrg2tm1Spet/Apb
Nickname: RQ/B6 ; GABRG2 R43Q
Genetics
Strain Types Mutant strain
Genetic Details Targeted knockout
Mode of Inheritance Dominant
1.  Affected Gene Name: gamma-aminobutyric acid (GABA) A receptor, subunit gamma 2  
Chromosome 11
Affected Gene Symbol Gabrg2
Protein expression of altered gene: Reduced
Location on chromosome (bp): 41910203-42000857 bp, - strand From VEGA annotation of GRCm38
MGI Gene Accession ID

Please also use this link to determine if other mutants have been registered with MGI (Mouse Genome Informatics)

MGI:95623
Allele Name gamma-aminobutyric acid (GABA) A receptor, subunit gamma 2; targeted mutation 1, Steven Petrou
Allele Symbol Gabrg2tm1Spet
MGI Allele Accession ID MGI:3764923
Allele synonyms: gamma2(R43Q)
Mutant Construction Technique CRE recombinase-loxP technology
Phenotype
Phenotype Homozygous State Partial perinatal lethality: • mice are rarely born Complete postnatal lethality: • mice that are born die before P19 Tremors: • mice that are born exhibit a severe tremor Abnormal gait: • mice that are born have altered gaits Abnormal brain wave pattern: • mice lack normal brain rhythms
Phenotype Heterozygous State Mice heterozygous for the mutation demonstrated behavioral arrest associated with 6-to 7-Hz spike-and-wave discharges, which are blocked by ethosuximide, a first-line treatment for absence epilepsy in man. Seizures in the mouse showed an abrupt onset at around age 20 days corresponding to the childhood nature of this disease. Reduced cell surface expression of gamma2(R43Q) was seen in heterozygous mice in the absence of any change in alpha1 subunit surface expression
Original Genetic Background (129X1/SvJ x 129S1/Sv)F1-Kitl+
Genetic Background Currently Maintained C57BL/6J
Coat Colour Black
Strain identification
How is this strain characterised? Genotyping
Fertility and Strain maintenance
Fertility and Strain maintenance
Relevant bibliographic / database references
Strain Specific References
Other Related References
General information
Associated IP rights? No
Does it Model a Human Condition? Yes
Description of human condition: childhood absence epilepsy
Applicable Research Areas Neurobiology
Keywords
  • Epilepsy
  • febrile
  • seizure
  • R43Q
Additional Information Genotype of mice submitted for sperm cryopreservation confirmed by researcher using tissue harvested from the mice at the time of cryopreservation.
Is the strain available in any form to other researchers Yes
APB stock stored as: Cryopreserved sperm (from 6 mice)
Are live mice available? Unknown
MTA needs to be signed? No


     

 


Build: 2026.09.02 Non-profit supported by the Australian government  |  © Copyright 2026 Australian Phenomics Facility Last updated: 09/11/2026