About   Help   FAQ
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 (44 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 (44 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





Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support.
last database update
11/12/2024
MGI 6.24
The Jackson Laboratory