Strain Detail Sheet

Strain Name:
C57BL/6J-Cacna1atm1.1Ehess/Mmmh
Stock Number:
069563-MU
Citation ID:
RRID:MMRRC_069563-MU
Other Names:
EA2 knockin mice

Strain Information

Gene Details

Cacna1atm1.1Ehess
Name: calcium channel, voltage-dependent, P/Q type, alpha 1A subunit; targeted mutation 1.1, Ellen Hess
Synonyms: EA2
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 8
Alteration at locus: Knock-In
Cacna1a
Name: calcium channel, voltage-dependent, P/Q type, alpha 1A subunit
Synonyms: Cacnl1a4, nmf352, smrl, alpha1A, SCA6, Ccha1a
Type: Gene
Species: Mouse
Chromosome: 8
Alteration at locus: Knock-In
NCBI: 12286
HGNC: HGNC:1388
Homologene: 56383
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Genetic Alterations

Knock-in of a nucleic acid alteration reported as c.4486T>G/p.F1406C in the mouse ortholog of the human CACNA1A gene (PMID:25109669). Figure 1c of this publication provides the sequence reference frame of GTTCTTCCACT, where the underscored T is replaced with a G. This correlates with NM_007578.3:c.4064T>G/p.(Phe1355Cys) in the mouse and NM_023035.3:c.4220T>G/p.(Phe1407Cys) in humans, using the longest known isoform RefSeqs per HGVS nomenclature rules. The original report of c.4486T>G/p.F1406C cannot be reconciled; see LUMC Mutalyzer analyses below.

HVGS Nomenclature
  • Genbank RefSeq - mRNA: NM_007578.3
  • Genbank RefSeq, protein: NP_031604.3
  • Variant, nucleic acid level: c.4064T>G
  • Variant, amino acid level, predicted: p.Phe1355Cys (F1355C)
  • Check this variant: LUMC Mutalyzer
  • Genbank RefSeq - mRNA: NM_023035.3
  • Genbank RefSeq, protein: NP_075461.2
  • Variant, nucleic acid level: c.4220T>G
  • Variant, amino acid level, predicted: p.Phe1407Cys (F1407C)
  • Check this variant: LUMC Mutalyzer
ES Cell Line
Not specified

Strain Description

Phenotype
Mice homozygous for the mutated allele exhibit a ~70% reduction in CaV2.1 current density inPurkinje cells, though surprisingly do not exhibit an overt motor phenotype.
MeSH Terms
  • Animals
  • Ataxia/genetics
  • Ataxia/pathology
  • Ataxia/physiopathology
  • Calcium Channel Blockers/pharmacology
  • Calcium Channels, N-Type/genetics
  • Cerebellum/pathology
  • Disease Models, Animal
  • Humans
  • Intracellular Signaling Peptides and Proteins/genetics
  • Membrane Potentials/drug effects
  • Membrane Potentials/genetics
  • Mice
  • Mice, Inbred C57BL
  • Mice, Transgenic
  • Motor Activity/genetics
  • Mutation, Missense/genetics
  • Neurons/physiology
  • Nystagmus, Pathologic/genetics
  • Nystagmus, Pathologic/pathology
  • Nystagmus, Pathologic/physiopathology
  • Patch-Clamp Techniques
  • Reaction Time/drug effects
  • Sodium Channel Blockers/pharmacology
  • Tetrodotoxin/pharmacology
Strain Development
C57BL/6-derived embryonic stem cells of unknown origin (donor indicates overall B6J-coisogenic model). Mice carrying the unresolved knock-in allele were crossed with the Cre-deleter strain C57BL/6-Tg(Zp3-Cre)93Knw/J (RRID:IMSR_JAX:003651) to remove the floxed neomycin cassette. Progeny carrying the resolved allele were crossed with C57BL/6J mice to segregate the Cre allele. The EA2 knock-in mice were bred and maintained on a C57BL/6J background.
Suggested Control Mice
C57BL/6J

MMRRC Genetic QC

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@missouri.edu. Older strains may not have this information.

Research Applications

  • Models for Human Disease
  • Neurobiology

Strain Origin

Donor
Ellen Hess, Ph.D., Emory University.
Primary Reference

Rose SJ, Kriener LH, Heinzer AK, Fan X, Raike RS, van den Maagdenberg AM, Hess EJ. The first knockin mouse model of episodic ataxia type 2. Exp Neurol. 2014 Nov;261:553-62. doi: 10.1016/j.expneurol.2014.08.001. Epub 2014 Aug 8. (Medline PMID: 25109669)

Colony and Husbandry Information

Health Status Report

Colony Surveillance Program and Current Health Reports

For more information about this colony's health status contact mmrrc@missouri.edu

Appearance

Coat Color
Black
Eye
Black

Breeding

MMRRC Breeding System
Backcross
Generation
N? (C57BL/6J)
Overall Breeding Performance
Excellent

Reproductive Statistics

Viability and Fertility: Female Male Comments
Homozygotes are viable: Yes Yes
Homozygotes are fertile: Yes Yes
Heterozygotes are fertile: Yes Yes
Age Reproductive Decline: Undetermined Undetermined
Average litter size
7 to 9
Recommended wean age
3 Weeks
Average Pups Weaned
7 to 9

Order Request Information

Availability Level

The availability level for this product has not been determined.

Conditions of Distribution

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.

Fees

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