Mouse Strain information
APB ID 2420
Added 10/01/2008
Last Edited 11/05/2014
Strain name: B6;129S4-Nos1tm1Plh/AnuApb
Nickname: Nos1 -/-
Strain designation name: B6;129S4-Nos1tm1Plh
Strain Types Mutant strain
Genetic Details Targeted knockout
Mode of Inheritance Recessive
1.  Affected Gene Name: nitric oxide synthase 1, neuronal  
Chromosome 5
Affected Gene Symbol Nos1
Protein expression of altered gene: Nil
Genetic alteration of gene: A neomycin cassette replaced exon 1. This exon encodes the initiation site and amino acids 1 - 159 of the protein. Northern blots of brain homogenates from homozygous mutant mice showed no detectable mRNA. Western blots of brain homogenates from homozygous mutant mice showed no detectable protein. However, splice variants are expressed and variable low levels of NOS activity are seen in the brain.
Location on chromosome (bp): 118231041-118408849 bp, + strand (From VEGA annotation of NCBI Build 37)
MGI Gene Accession ID

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Synonyms bNOS, nNOS, NO, Nos-1
Allele Name targeted mutation 1, Paul L Huang
Allele Symbol Nos1tm1Plh
MGI Allele Accession ID MGI:1857227
Allele synonyms: Kn, N2KO, nNOS KO, nNOS-, NOSdelta
Mutant Construction Technique None
Phenotype Homozygous State The neurons normally expressing NOS appear intact, and the mutant NOS mice are viable, fertile, and without evident histopathological abnormalities in the central nervous system. The most evident effect of disrupting the neuronal NOS gene is the development of grossly enlarged stomachs, with hypertrophy of the pyloric sphincter and the circular muscle layer. This phenotype resembles the human disorder infantile pyloric stenosis, in which gastric outlet obstruction is associated with the lack of NDP neurons in the pylorus.
Original Genetic Background 129
Genetic Background Currently Maintained C57BL/6 x 129
Strain identification
How is this strain characterised? Genotyping
Fertility and Strain maintenance
Fertility and Strain maintenance
Relevant bibliographic / database references
Strain Specific References
Other Related References
General information
Associated IP rights? No
Does it Model a Human Condition? Yes
Research value of this Strain Models Pyloric Stenosis, Infantile Hypertrophic
Applicable Research Areas Neurobiology
Cell biology
Developmental biology
Models for human disease
Endocrine deficiency
  • Pyloric Stenosis
  • hypertrophy
  • stomach
  • neurogenesis
Is the strain available in any form to other researchers Yes
APB stock stored as: Cryopreserved sperm (from 15 mice)

APB stock genotyped verified by: The depositor
Are live mice available? No
MTA needs to be signed? Yes



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