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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Mmp9em1Iimcb
endonuclease-mediated mutation 1, Olga Gewartowska
MGI:8209555
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Mmp9em1Iimcb/Mmp9em1Iimcb involves: C57BL/6 * CBA MGI:8209576


Genotype
MGI:8209576
hm1
Allelic
Composition
Mmp9em1Iimcb/Mmp9em1Iimcb
Genetic
Background
involves: C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mmp9em1Iimcb mutation (0 available); any Mmp9 mutation (48 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• enhanced freezing in fear-conditioning test owing to enhanced long-term fear memory

mortality/aging
N
• viable and normal survival

nervous system
• reduced length/head width ratio and smaller spine area in hippocampus CA1 region at age P28
• normal head width in hippocampus CA1 region at age P28
• in hippocampus CA1 region at age P28
• in hippocampus CA1 region at age P28
• after high-frequency stimulation (HFS, 4 trains of 100 pulses at 100 Hz) in hippocampus CA1 neurons
• normal LTP in hippocampus CA1 neurons after stimulation with one 100 Hz pulse

reproductive system
N
• fertile and normal litter size





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)
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last database update
03/25/2025
MGI 6.24
The Jackson Laboratory