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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Chrna4tm2Jbou
targeted mutation 2, Jim Boulter
MGI:3700205
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Chrna4tm2Jbou/Chrna4tm2Jbou either: (involves: 129S4/SvJae * 129X1/SvJ * C57BL/6J) or (involves: 129X1/SvJ * C57BL/6J) MGI:3700261
ht2
Chrna4tm2Jbou/Chrna4+ either: (involves: 129S4/SvJae * 129X1/SvJ * C57BL/6J) or (involves: 129X1/SvJ * C57BL/6J) MGI:3700260


Genotype
MGI:3700261
hm1
Allelic
Composition
Chrna4tm2Jbou/Chrna4tm2Jbou
Genetic
Background
either: (involves: 129S4/SvJae * 129X1/SvJ * C57BL/6J) or (involves: 129X1/SvJ * C57BL/6J)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Chrna4tm2Jbou mutation (1 available); any Chrna4 mutation (42 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• observed during seizures
• mice exhibit spontaneous recurrent seizures, ranging from 1-5s of behavioral arrest to extended (2-60 seconds) of rhythmic jerking movements of extremities, with loss of balance and falling over

nervous system
• mice exhibit spontaneous recurrent seizures, ranging from 1-5s of behavioral arrest to extended (2-60 seconds) of rhythmic jerking movements of extremities, with loss of balance and falling over
• mutants show abnormal EEG activity during seizure episodes, such as repetitive discharges with paroxysmal onset and sudden termination with asymmetric rhythm patterns; this is observed for 5.7% of a 4-hour recording period




Genotype
MGI:3700260
ht2
Allelic
Composition
Chrna4tm2Jbou/Chrna4+
Genetic
Background
either: (involves: 129S4/SvJae * 129X1/SvJ * C57BL/6J) or (involves: 129X1/SvJ * C57BL/6J)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Chrna4tm2Jbou mutation (1 available); any Chrna4 mutation (42 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• observed during seizures
• mice exhibit spontaneous recurrent seizures, ranging from 1-5s of behavioral arrest to extended (2-60 seconds) of rhythmic jerking movements of extremities, with loss of balance and falling over

nervous system
• mice exhibit spontaneous recurrent seizures, ranging from 1-5s of behavioral arrest to extended (2-60 seconds) of rhythmic jerking movements of extremities, with loss of balance and falling over
• mutants show abnormal EEG activity during seizure episodes, such as repetitive discharges with paroxysmal onset and sudden termination with asymmetric rhythm patterns; this is observed for 5.1% of a 4-hour recording period





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last database update
04/30/2024
MGI 6.23
The Jackson Laboratory