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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Ryr2tm2.1Swch
targeted mutation 2.1, S R Wayne Chen
MGI:5605476
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Ryr2tm2.1Swch/Ryr2tm2.1Swch involves: 129S1/Sv * 129X1/SvJ * Black Swiss MGI:5605477
ht2
Ryr2tm2.1Swch/Ryr2+ involves: 129S1/Sv * 129X1/SvJ * Black Swiss MGI:5605478
ht3
Ryr2tm1.1Swch/Ryr2tm2.1Swch involves: 129S1/Sv * 129X1/SvJ * Black Swiss MGI:5605479


Genotype
MGI:5605477
hm1
Allelic
Composition
Ryr2tm2.1Swch/Ryr2tm2.1Swch
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * Black Swiss
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ryr2tm2.1Swch mutation (0 available); any Ryr2 mutation (325 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• embryonic lethal, with most embryos dying between E10.5 and E11.5




Genotype
MGI:5605478
ht2
Allelic
Composition
Ryr2tm2.1Swch/Ryr2+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * Black Swiss
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ryr2tm2.1Swch mutation (0 available); any Ryr2 mutation (325 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• elevation of extracellular calcium or application of isoproterenol results in very few or no calcium waves in intact hearts unlike in wild-type mice which show increased frequency of spontaneous calcium waves
• the L-type calcium channel current in cardiomyocytes is increased, resulting in a reduced excitation-contraction coupling gain
• the time to the peak of the calcium transient is increased in cardiomyocytes, whereas late decay times are shorter
• however, the rate of decay of caffeine-induced calcium transients is not different from wild-type cardiomyocytes
• cardiomyocytes exhibit reduced propensity for spontaneous store overload-induced calcium release (SOICR)
• sarcoplasmic reticulum calcium content is greater in cardiomyocytes than in wild-type cells when bathed at 5 mM extracellular calcium to overload the sarcoplasmic reticulum, however sarcoplasmic reticulum calcium content under nonoverload conditions is not affected

muscle
• the L-type calcium channel current in cardiomyocytes is increased, resulting in a reduced excitation-contraction coupling gain
• the time to the peak of the calcium transient is increased in cardiomyocytes, whereas late decay times are shorter
• however, the rate of decay of caffeine-induced calcium transients is not different from wild-type cardiomyocytes




Genotype
MGI:5605479
ht3
Allelic
Composition
Ryr2tm1.1Swch/Ryr2tm2.1Swch
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * Black Swiss
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ryr2tm1.1Swch mutation (0 available); any Ryr2 mutation (325 available)
Ryr2tm2.1Swch mutation (0 available); any Ryr2 mutation (325 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• mice are resistant to catecholaminergic polymorphic ventricular tachycardia induced by the administration of caffeine and epinephrine





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last database update
12/10/2024
MGI 6.24
The Jackson Laboratory