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Type Congenic; Mutant Strain; Targeted Mutation; Additional information on Genetically Engineered Mutant Mice. Mating System Homozygote x Homozygote (Female x Male) Species laboratory mouse Generation N3+N5 (23-OCT-08) Donating Investigator Gregg Homanics, University of Pittsburgh Description
Mice homozygous for this GABAA-R alpha4F allele are viable and fertile. These mutant mice have loxP sites flanking exon 3 of the targeted gene. When bred to Cre-recombinase expressing mice, offspring will have a deletion of exon 3 in the cre expressing tissue(s). These "floxed" mice may be useful in neurological studies including behavior and neurotransmitter function.Of note, several strains bearing gamma-aminobutyric acid (GABA-A) receptor mutations are available from this donating investigator (Dr. Gregg Homanics, University of Pittsburgh), including Gabra1 (Stock No. 004318), Gabra4 (Stock No. 006874), Gabra6 (Stock No. 002710), Gabrb3 (Stock No. 002711), Gabrd (Stock No. 003725), and Gabrg2 (Stock No. 003137).
Development
A targeting vector was designed to place a loxP site upstream and a frt-flanked neomycin resistance gene and loxP site downstream of exon 3 of the targeted gene. The construct was electroporated into (129X1/SvJ x 129S1/Sv)F1-derived R1 embryonic stem (ES) cells. Correctly targeted ES cells were microinjected into C57BL/6J blastocysts. Chimeric mice were bred to C57BL/6J females. Offspring with the "floxed" exon 3 allele and neomycin cassette (Fneo) were bred to actin-FLPe mice (on a mixed C57BL/6J and SJL genetic background). Offspring with "floxed" exon 3 and excised neo allele (F) were subsequently backcrossed to C57BL/6J for 2 generations. Mice were then backcrossed to an EIIa-Cre transgenic mouse strain (C57BL/6J congenic background, see Stock No. 003724). The resulting mice still containing the non-recombined "floxed" exon 3 (F) allele that were negative for the cre transgene were bred to C57BL/6J for two more generations prior to arrival at The Jackson Laboratory. Upon arrival, mutant mice were bred to C57BL/6J for at least three generations.
| Control | ||
|---|---|---|
| 000664 C57BL/6J | ||
| Considerations for Choosing Controls | ||
Strains carrying other alleles of Gabra4
005812 B6.129P2-Gabra4tm1Dgen/J View Strains carrying other alleles of Gabra4 (1 strain)
Congenic Nomenclature
Cre-lox Systems
View Mammalian Phenotype Terms
Mammalian Phenotype Terms
assigned by genotype
The following phenotype information may relate to a genetic background differing from this JAX® Mice strain.
Gabra4tm1.2Geh/Gabra4tm1.2Geh
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * SJL
- no phenotypic analysis
- *normal* no phenotypic analysis (MGI Ref ID J:115154)
- mice were created but not used in J:115154
View Research Applications
Research Applications
This mouse can be used to support research in many areas including:
Neurobiology Research
Behavioral and Learning Defects
Cre-lox System (loxP-flanked Sequences)
Receptor Defects (GABA receptor)
Receptor Defects
Research Tools
Cre-lox System (loxP-flanked Sequences)
Neurobiology Research
| Allele Symbol | Gabra4tm1.2Geh | ||
|---|---|---|---|
| Allele Name | targeted mutation 1.2, Gregg E Homanics | ||
| Allele Type | Targeted (Floxed/Frt) | ||
| Common Name(s) |
F;
GABAA-R alpha4 | ||
| Mutation Made By | Gregg Homanics, University of Pittsburgh | ||
| Strain of Origin | (129X1/SvJ x 129S1/Sv)F1-Kitl+ | ||
| ES Cell Line Name | R1 | ||
| ES Cell Line Strain | (129X1/SvJ x 129S1/Sv)F1-Kitl<+> | ||
| Gene Symbol and Name | Gabra4, gamma-aminobutyric acid (GABA-A) receptor, subunit alpha 4 | ||
| Chromosome | 5 | ||
| Gene Common Name(s) | Gabra-4; | ||
| Molecular Note | Offspring with a floxed exon 3 allele and neomycin cassette (Fneo) were bred to actin-FLPe mice to remove the Neomycin cassette. [MGI Ref ID J:115154] | ||
Genotyping Protocols
Gabra4tm1.2Geh, STD PCR, vers. 1
Helpful Links
Optimizing PCR Protocols
Chandra D; Jia F; Liang J; Peng Z; Suryanarayanan A; Werner DF; Spigelman I; Houser CR; Olsen RW; Harrison NL; Homanics GE. 2006. GABAA receptor alpha 4 subunits mediate extrasynaptic inhibition in thalamus and dentate gyrus and the action of gaboxadol. Proc Natl Acad Sci U S A 103(41):15230-5. [PubMed: 17005728] [MGI Ref ID J:115154]
Animal Health Reports
Room Number AX11
Colony Maintenance
Breeding & Husbandry When maintaining a live colony, homozygous mice can be bred. Mating System Homozygote x Homozygote (Female x Male) Diet Information LabDiet® 5K52/5K67
| Pricing for USA, Canada and Mexico shipping destinations |
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Weeks of Age Price* Gender Genotypes Provided Individual Mouse Price $155.70 Female or Male Homozygous for Gabra4tm1.2Geh *Price(s) in US dollars ($)
Pairs /Price* Pair Genotype $311.40 Homozygous for Gabra4tm1.2Geh x Homozygous for Gabra4tm1.2Geh
| Supply Notes |
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| Pricing for International shipping destinations |
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Weeks of Age Price* Gender Genotypes Provided Individual Mouse Price $202.50 Female or Male Homozygous for Gabra4tm1.2Geh *Price(s) in US dollars ($)
Pairs /Price* Pair Genotype $404.90 Homozygous for Gabra4tm1.2Geh x Homozygous for Gabra4tm1.2Geh
| Supply Notes |
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| Standard Supply | Repository-Live. A collection of over 1000 strains maintained as live colonies. Individual colonies are sized to meet current customer demand. Delivery for orders of 10 mice or less ranges on average from one to eight weeks; mice are generally shipped between four to six weeks of age with a maximum shipping age of ~nine weeks. Colony sizes do not generally support stringent age specifications for large volumes of mice; however custom orders and larger quantities of mice are easily arranged. Estimated ship dates for all orders provided within 48 hours of order placement. |
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| Supply Notes |
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| Control | ||
|---|---|---|
| 000664 C57BL/6J | ||
| Considerations for Choosing Controls | ||
| USA, Canada and Mexico - Control Pricing Information for Genetically Engineered Mutant Strains. | ||
| International - Control Pricing Information for Genetically Engineered Mutant Strains. | ||
Purchasing Information
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Contact Information
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Fax: 207.288.6150
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| phone: | 207-288-6470 |
| fax: | 207-288-6655 |
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