Strain Name:
B6.129S1-Chrna4tm2Lst Chrna4tm3Lst/Mmucd
Stock Number:
041836-UCD
Citation ID:
RRID:MMRRC_041836-UCD
Other Names:
a4(L9A)-YFP, a4(L9A)-YFP

Strain Information

Chrna4tm3Lst
Name: cholinergic receptor, nicotinic, alpha polypeptide 4; targeted mutation 3, Henry Lester
Synonyms: alpha4YFP
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 2
Alteration at locus: Knockout
Chrna4
Name: cholinergic receptor, nicotinic, alpha polypeptide 4
Synonyms: alpha4 nAChR, Acra-4, Acra4, a4 nicotinic receptor, alpha4-nAChR
Type: Gene
Species: Mouse
Chromosome: 2
Alteration at locus: Targeted Mutation
NCBI: 11438
HGNC: HGNC:1958
Homologene: 592
Chrna4tm2Lst
Name: cholinergic receptor, nicotinic, alpha polypeptide 4; targeted mutation 2, Henry A Lester
Synonyms: L9'A, Leu9'Ala
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 2
Alteration at locus: Targeted Mutation
Genetic Alterations
Two knock-in mutations were inserted into exon 5 of the chrna4 gene (alpha4 subunit of the nicotinic receptor). One was an insertion of yellow fluorescent protein and a hemagglutinin tag in the M3-M4 cytoplasmic loop of alpha4. The second was a leucine 9' to alanine mutation in the second transmembrane region of alpha4.
ES Cell Line
CJ7 derived from 129S1/Sv-Oca2+ Tyr+ Kitl+
Phenotype

Homozygous: Homozygous have fluorescent alpha4 nicotinic receptor subunits. The nicotinic receptors are 40 fold more sensitive to nicotine or acetylcholine. The male homozygous mice tend to be more aggressive and fight somewhat more. The litter size of homozygous x homozygous tend to be smaller than wildtype matings.

Heterozygous: Similar to homozygous but normal litter size.

Cre-excised Phenotype: Undetermined

Mammalian Phenotype Terms
Allelic Composition: Chrna4tm3Lst/Chrna4+ (Genetic Background: involves: 129S1/Sv )

Allelic Composition: Chrna4tm2Lst/Chrna4tm2Lst (Genetic Background: involves: 129S1/Sv * C57BL/6 )

Strain Development
The alpha4(L9A)-YFP targeting vector genomic DNA was electroporated in stem cells with a 129 background. After selection of the ES cells, cre recombinase cDNA was electroporated to remove the neomycin resistance gene positive selection factor, leaving a loxp in the intron. These ES cells were injected into C57BL/6 blastocyst embryos and implanted in mice. The chimeric offspring were mated to C57BL/6 mice for germline transmission. These mice were then backcrossed to greater than 10 generations to C57BL/6 mice.
Suggested Control Mice
Wild-type littermates
MMRRC Genetic QC Summary
The MMRRC Centers have developed a genetic QC pipeline using MiniMUGA array genotyping to provide additional information on strain backgrounds for MMRRC congenic and inbred strains. For more information on when data may be available, or to request genotyping for a strain of interest, please contact mmrrc@ucdavis.edu. Older strains may not have this information.
Donor
Henry Lester, Ph.D., California Institute of Technology.

Colony and Husbandry Information

Sometimes the homozygous males are aggressive but this is not always the case. For breeders, you may want to consider separating the males from females after mating.

Colony Surveillance Program and Current Health Reports

Mice recovered from a cryo-archive will have health surveillance performed on recipient females. Health reports will be provided prior to shipment. If you require additional health status information, please email mmrrc@ucdavis.edu.
Coat Color
black
MMRRC Breeding System
Backcross
Generation
greater than 10 generations of backcrossing to C57BL/6
Overall Breeding Performance
Good
Viability and Fertility: Female Male Comments
Homozygotes are viable: Yes Yes
Homozygotes are fertile: Yes Yes
Heterozygotes are fertile: Yes Yes
Age Reproductive Decline: 8 to 12 months 8 to 12 months
Average litter size
5-9
Recommended wean age
3 weeks

Order Request Information

Limited quantities of breeder mice (recovered litter) are available from a cryoarchive; recovered litter usually available to ship in 3 to 4 months.

Cryopreserved material may be available upon request, please inquire to mmrrc@ucdavis.edu for more information.

Distribution of this strain requires submission of the MMRRC Conditions of Use (COU). A link to the COU web form will be provided via email after an order has been placed; the form should be completed then or the email forwarded to your institutional official for completion.

The donor or their institution limits the distribution to non-profit institutions only.

Additional charges may apply for any special requests. Shipping costs are in addition to the basic distribution/resuscitation fees. Information on shipping costs and any additional charges will be provided by the supplying MMRRC facility.

Click button to Request this one strain. (Use the MMRRC Catalog Search to request more than one strain.)
MMRRC Item # Description Distribution Fee / Unit (US $)
*Shipping & Handling not included*
Units Notes
041836-UCD-EMBRYO Cryo-preserved embryos $1,038.00 / Non-Profit Aliquot Approximate quantity2 : 20-40 embryos / aliquot
041836-UCD-SPERM Cryo-preserved spermatozoa $546.25 / Non-Profit Aliquot Approximate quantity3
041836-UCD-RESUS Litter recovered from cryo-archive $4,044.00 / Non-Profit Litter Recovered litter4; additional fees for any special requests.

1 The distribution fee covers the expense of rederiving mice from a live mouse; you will receive the resulting litter. The litter will contain at minimum one mutant carrier; the actual number of animals and the gender and genotype ratios will vary. (Typically, multiple breeder pairs can be established from the recovered litter.) Prior to shipment, the MMRRC will provide information about the animals recovered. If you anticipate or find that you need to request specific genotypes, genders or quantities of mice in excess of what is likely from a resuscitated litter, you may discuss available options and pricing with the supplying MMRRC facility.

2 An aliquot contains a sufficient number of embryos (in one or more vials or straws and based on the transfer success rate of the MMRRC facility) to transfer into one to three recipients. The MMRRC makes no guarantee concerning embryo transfer success experienced in the recipient investigator's laboratory. Neither gender nor genotype ratios are guaranteed.

3 An aliquot is one straw or vial with sufficient sperm to recover at least one litter of mice, as per provided protocols, when performed at the MMRRC facility. The MMRRC makes no guarantee concerning the success of these procedures when performed outside the MMRRC facilities.

4 The distribution fee covers the expense of resuscitating mice from the cryo-archive; you will receive the resulting litter. The litter will contain at minimum one mutant carrier; the actual number of animals and the gender and genotype ratios will vary. (Typically, multiple breeder pairs can be established from the recovered litter.) Prior to shipment, the MMRRC will provide information about the animals recovered. If you anticipate or find that you need to request specific genotypes, genders or quantities of mice in excess of what is likely from a resuscitated litter, you may discuss available options and pricing with the supplying MMRRC facility.

To request material from the MMRRC: Please fill out our on-line request form (accessible from the catalog search results page, or click the Request this Strain button in the fees section). If you have questions or need assistance completing this form, you may call Customer Service at (800) 910-2291 (in USA or Canada) or (530) 757-5710 (international calls). Before you call, please have with you: the MMRRC item number, quantity needed, Bill-to and Ship-to contact information.