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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Grin1tm1Bhk
targeted mutation 1, Beverly H Koller
MGI:1928280
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Grin1tm1Bhk/Grin1tm1Bhk involves: 129P2/OlaHsd * 129S6/SvEvTac * C57BL/6 * DBA/2 MGI:6258771
hm2
Grin1tm1Bhk/Grin1tm1Bhk involves: 129P2/OlaHsd * C57BL/6 * DBA/2 MGI:2175046


Genotype
MGI:6258771
hm1
Allelic
Composition
Grin1tm1Bhk/Grin1tm1Bhk
Genetic
Background
involves: 129P2/OlaHsd * 129S6/SvEvTac * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Grin1tm1Bhk mutation (2 available); any Grin1 mutation (66 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• in a discrete T-maze paradigm with a 5-second delay, mice show reduced alternation indicating impaired spatial working memory
• about 25% of mice develop skin lesions caused by self-injurious, over-grooming behavior
• mice exhibit enhanced startle amplitudes, indicative of increased sensory-motor reactivity
• mice exhibit forepaw clasping/wringling behavior during tail suspension at a greater rate than controls
• activity patterns across the light-dark cycle indicate increased locomotor activity, which is more apparent during the light cycle
• in a mating paradigm, males initiate less social contact with an unfamiliar wild-type female than control males
• in a same-sex 3 chambered social approach/avoidance paradigm, males show reduced sociability compared to controls
• males emit fewer vocalizations during female social interaction than control males and the peak frequency of calls emitted is lower than in controls

hearing/vestibular/ear
• the phase-locked early auditory gamma-band response is reduced indicating deficits in neural synchrony
• mice show a 10-15% delay in the latency of the N1 component of the auditory-evoked response, however the amplitudes of P1 and N1 peaks are not different

nervous system

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
autism spectrum disorder DOID:0060041 J:203256




Genotype
MGI:2175046
hm2
Allelic
Composition
Grin1tm1Bhk/Grin1tm1Bhk
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Grin1tm1Bhk mutation (2 available); any Grin1 mutation (66 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• slightly smaller than normal at birth
• weight difference persists to adulthood but the extent of the difference diminishes over time
• eventually mutants attain weights within the normal range

behavior/neurological
• increased acoustic startle response
• male response is enhanced by exposure to predator odor (soiled rat bedding)
• increased "ambulation" during habituation to a new environment
• treatment with Clozapine normalizes behavior at doses not affecting behavior of controls
• increased
• treatment with Clozapine normalizes behavior at doses not affecting behavior of controls
• all abnormal behaviors at least partially reversed by treatment with Clozapine
• do not sleep in contact with littermates
• no fighting by either males or females
• no aggressive mounting behavior by females unlike control females
• do not sleep huddled with littermates
• males fail to copulate with wild-type females
• reduced investigation of "intruder" animals
• exhibit escape behavior, avoid social interactions
• do not sleep huddled with littermates

nervous system
• deficient prepulse inhibition
• inhibition deficiency offset in males exposed to predator odor (soiled rat bedding)

reproductive system
• males fail to copulate with wild-type females

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
schizophrenia DOID:5419 OMIM:181500
J:57125





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last database update
11/12/2024
MGI 6.24
The Jackson Laboratory