The leg dragger mutation provides a viable mutation in kinesin family member 1A that causes pre-wean hindleg paralysis, whereas a targeted null mutation causes perinatal lethality. This strain provides a model for autosomal recessive spastic paraplegia 30.Read More +
The H2 haplotype of the live Kif1algdg colony (2017) has not been assessed.
Leg dragger homozygotes are slightly smaller than their unaffected littermates and lose most of the use of their rear legs such that they drag their rear legs and pull themselves along with their front legs to move. This phenotype can be detected as early as 2 weeks of age and is evident by 3 weeks of age. A few homozygotes nearing wean age are found to roll over and over in a struggle to right themselves. When raised by their tails they do not splay their legs outward but rather cross the front pair and the rear pair. Auditory brainstem response analysis of one homozygous animal at 18 days of age showed severe hearing loss and no others were tested. Heterozygotes appear normal and fertile but produce slightly fewer homozygotes than the 25% expected when intercrossed.
The leg dragger mutation (Kif1algdg) arose spontaneously on the C3.NB-H2p H2-T18c?/SnJ background. Before 2015, sperm was cryopreserved from heterozygous males at generation +F7.
To establish a live Kif1algdg mutant colony in 2017, The Jackson Laboratory Repository used an aliquot of the frozen sperm to fertilize oocytes from C3H/HeJ inbred females (Stock No. 000659 [H2k]). Rederived Kif1algdg mice were then bred to wildtype littermates or to C3H/HeJ mice. The H2 haplotype of the live Kif1algdg colony has not been assessed.
|Allele Name||leg dragger|
|Allele Type||Spontaneous (Not Specified)|
|Allele Synonym(s)||Kif1algdg; leg dragger|
|Gene Symbol and Name||Kif1a, kinesin family member 1A|
|Gene Synonym(s)||C2orf20; ATSV; kinesin family member 1 (C. elegans unc104 homolog); N-3 kinesin; C630002N23Rik; UNC104; MRD9; Gm1626; Kns1; HSN2C; Kns1; LOC381283; gene model 1626, (NCBI); SPG30; C630002N23Rik; RIKEN cDNA C630002N23 gene|
|Strain of Origin||C3.NB-H2p H2-T18c?/SnJ|
|Molecular Note||A spontaneous C to T point transition at Chromosome 1 position 93,076,218 bp (GRCm38/mm10) causes this L181F mutation (Ctc to Ttc).|
When using the legdragger mouse strain in a publication, please cite the originating article(s) and include JAX stock #016894 in your Materials and Methods section.
|Heterozygous or wildtype for Kif1a<lgdg>|
We will fulfill your order by providing at least two carriers for each strain ordered. The total number, sex, and genotypes provided will vary, although typically 8 or more animals are provided. Please check genotypes which will be recovered. While the genotypes of all animals produced will be communicated to you prior to scheduling shipment, the genotypes of animals provided may not reflect the mating scheme and genotypes described in the strain description. Animals are typically ready to ship in 11-14 weeks. If a second recovery is required to produce the minimum number of animals, then delivery time would increase to approximately 25 weeks. If we fail to produce animals of the correct genotype, you will not be charged. We cannot guarantee the reproductive success of mice shipped to your facility. If the mice are lost after the first three days (post-arrival) or do not produce progeny at your facility, a new order and fee will be necessary.
Cryorecovery to establish a Dedicated Supply for greater quantities of mice. Mice recovered can be used to establish a dedicated colony to contractually supply you mice according to your requirements. Price by quotation.
|Frozen Mouse Embryo||$2,595.00 per straw or vial|
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