Ocular retardation Jackson (or-J) is a spontanous mutation in Vsx2 (visual system homeobox 2), homozygotes exhibit small eyes with closed lids, reduced lens size, abnormal retinal layers and the absence of the optic nerve. This mutant mouse strain may be useful in studies of eye development.
Read More +Genetic Background | Generation |
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Allele Type | Gene Symbol | Gene Name |
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Spontaneous | Vsx2 | visual system homeobox 2 |
Vsx2 (visual system homeobox 2) or CHX10 encodes a homeodomain protein expressed (in human) in the progenitor cells of the neuroretina and in the inner nuclear layer of the mature retina.
Mutations in VSX2 are associated with microphthalmia, cataracts and iris abnormalities.
Similar to the original ocular retardation (or) allele, mice homozygous for ocular retardation Jackson (or-J) exhibit small eyes with closed lids, reduced lens size, abnormal retinal layers and the absence of the optic nerve. Mutants can be identified at E12 by small eyes and a thickening of the inner wall of the optic fissure. This mutant mouse strain may be useful in studies of eye development.
The ocular retardation Jackson or-J mutation arose spontaneously on the 129S1/Sv-Oca2+ Tyr+ KitlSl-J background at The Jackson Laboratory in 1975. The mutation was later identified as a premature stop codon (C to A transversion that alters codon 176 from tyrosine to a stop) in exon 3 of the homeobox domain of visual system homeobox 2 (Vsx2) gene.
Allele Name | ocular retardation Jackson |
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Allele Type | Spontaneous |
Allele Synonym(s) | Chx10-; orJ |
Gene Symbol and Name | Vsx2, visual system homeobox 2 |
Gene Synonym(s) | |
Strain of Origin | 129S1/Sv-Oca2+ Tyr+ KitlSl |
Chromosome | 12 |
Molecular Note | The molecular mutation is a premature stop codon in exon 3, corresponding to the homeobox domain of the encoded protein. |
When using the 129S1/Sv-Vsx2or-J/J mouse strain in a publication, please cite the originating article(s) and include JAX stock #000395 in your Materials and Methods section.
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The Jackson Laboratory has rigorous genetic quality control and mutant gene genotyping programs to ensure the genetic background of JAX® Mice strains as well as the genotypes of strains with identified molecular mutations. JAX® Mice strains are only made available to researchers after meeting our standards. However, the phenotype of each strain may not be fully characterized and/or captured in the strain data sheets. Therefore, we cannot guarantee a strain's phenotype will meet all expectations. To ensure that JAX® Mice will meet the needs of individual research projects or when requesting a strain that is new to your research, we suggest ordering and performing tests on a small number of mice to determine suitability for your particular project. We do not guarantee breeding performance and therefore suggest that investigators order more than one breeding pair to avoid delays in their research.
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