BUB/BnJ mice carry a specific T cell receptor V beta mutation, making this strain highly susceptible to collagen-induced arthritis. Mice are also reported to have high serum complement activity. BUB/BnJ mice are homozygous for the Mass1frings allele (monogenic, audiogenic seizure susceptibility 1) and are susceptible to audiogenic seizures prior to 25 days of age. They also have early onset hearing impairment by 3-4 weeks of age.
This strain is homozygous for Cdh23ahl and Pde6brd1. The ahl mutation accounts for progressive hearing loss (complete deafness by two to three months). See article "Genetic Background Effects: Can Your Mice See?", JAX® NOTES Spring 2002, No. 485.
BUB/BnJ mice carry a specific T cell receptor V beta mutation, making this strain highly susceptible to collagen-induced arthritis. This T cell receptor V beta restriction works in concert with other uncharacterized modifying genes present in BUB/BnJ mice. BUB/BnJ mice carry no detectable endogenous ecotropic MuLV DNA sequences. Mice are also reported to have high serum complement activity. In response to challenge, BUB/BnJ mice develop immune-mediated nephritis characterized by proteinuria, glomerulonephritis and tubulointerstitial disease (Xie et al., 2004).
BUB/BnJ mice are homozygous for the Mass1frings allele (monogenic, audiogenic seizure susceptibility 1) and are susceptible to audiogenic seizures prior to 25 days of age (Skradski, et al 2001). In addition, the Mass1frings allele acounts for early onset hearing impairment by 3-4 weeks of age (Johnson KR, et al 2005).
The BUB/BnJ inbred strain originated from randomly bred albino mice of unknown ancestry. Inbreeding was begun in 1945 by JW Wilson at Brown University. This strain was transferred to S Bernstein at The Jackson Laboratory at F46 and then to the production facility in 1968 at generation F68. Current generation of inbreeding is F166+.
|Allele Name||b-2 variant|
|Allele Type||Not Applicable|
|Allele Synonym(s)||Ahb-2; Ahh|
|Gene Symbol and Name||Ahr, aryl-hydrocarbon receptor|
|Gene Synonym(s)||Ah; Ah; Ahh; Ahh; Ahre; Ahre; In; In; aromatic hydrocarbon responsiveness; aryl hydrocarbon hydroxylase; bHLHe76; dioxin receptor; inflammatory reactivity|
|Strain of Origin||BALB/cBy|
|General Note|| C57BL/6 carries the responsive Ahrb allele; DBA/2 carries nonresponsive Ahrd. Heterozygotes (Ahrb/Ahrd) are responsive (J:5282). Later work identified a second (J:8895) and later a third (J:22144) allele conferring response. Thus the allele in C57, C58, and MA/My strains is now Ahrb-1; Ahrb-2 is carried by BALB/cBy, A, and C3H; and Ahrb-3 by Mus spretus, M. caroli, and MOLF/Ei. The nonresponsive strains AKR, DBA/2, and 129 carry Ahrd (J:22144). Nucleotide and amino acid sequence differences between Ahrb-1 and Ahrd have been determined (J:17460). |
Strain of origin - this allele was found in BALB/cByJ, A/J, C3H/HeJ, CBA strains
|Molecular Note||This allele encodes a high affinity, heat labile, 104 kDa receptor containing 848 amino acids. Sequencing studies of cDNA from C57BL/6J congenic mice homozygous for this allele identified nucleotide substitutions in the ORF that would cause 5 amino acid differences between the C57BL/6J and BALB/cBy peptides, and 2 amino acid differences between the BALB/cBy and DBA/2J peptides. A T to C transition in exon 11 replaces the opal termination codon in the C57BL/6J allele with an arginine codon in the BALB/cByallele. This change would extend translation of the BALB/cBy mRNA by 43 amino acids, accounting for the larger size of the peptide produced by this allele (104 kDa, vs 95 kDa for the C57BL/6J allele).|
|Allele Name||age related hearing loss 1|
|Allele Synonym(s)||Cdh23753A; mdfw|
|Gene Symbol and Name||Cdh23, cadherin 23 (otocadherin)|
|Gene Synonym(s)||4930542A03Rik; 4930542A03Rik; CDHR23; RIKEN cDNA 4930542A03 gene; USH1D; W; age related hearing loss 1; ahl; ahl; bob; bob; bobby; bus; bustling; mdfw; mdfw; modifier of deaf waddler; neuroscience mutagenesis facility, 112; neuroscience mutagenesis facility, 181; neuroscience mutagenesis facility, 252; nmf112; nmf112; nmf181; nmf181; nmf252; nmf252; sals; sals; salsa; v; waltzer|
|Strain of Origin||multiple strains|
|Molecular Note||Genetic complementation tests have shown allelism between the mdfw (modifier of deaf waddler) locus and the ahl locus. Further analysis has identified an association between ahl and a G to A transition at nucleotide position 753 of Cdh23. This hypomorphic allele causes in frame skipping of exon 7 and reduced message stability. Twenty-seven strains classified with ahl and carrying the 753A allele include: CD1, RBF/DnJ, PL/J, AKR/J, RF/J, BALB/cBy, A/WySnJ, P/J, SENCARA/PtJ, DBA/1J, ALS/LtJ, C58/J, C57BLKS/J, 129P1/ReJ, C57BR/cd, SKH2/J, BUB/Bn, MA/MyJ, LP/J, 129X1/SvJ, NOR/LtJ, A/J, C57BL/6, NOD/LtJ, DBA/2J, ALR/LtJ, C57L/J. Strains classified with ahl that DO NOT carry this mutation include: C3H/HeSnJ, I/LnJ,YBR/Ei, MRL/MpJ.|
|Allele Name||mutation 1|
|Allele Synonym(s)||Il3raA/J; Il3ran|
|Gene Symbol and Name||Il3ra, interleukin 3 receptor, alpha chain|
|Gene Synonym(s)||CD123; Cyrl; IL-3 receptor alpha chain; IL3R; IL3RAY; IL3RX; IL3RY; SUT-1; hIL-3Ra|
|Strain of Origin||A/J|
|Molecular Note||Sequence analysis revealed A/J mice lack the sequence corresponding to exon 8, which encodes 10 amino acid residues in the extracellular domain. Aberrant splicing was due to a 5 base pair deletion at the branch point in intron 7.|
|Allele Name||retinal degeneration 1|
|Allele Synonym(s)||Pdebrd1; rd; rd-1; rd1; rodless retina|
|Gene Symbol and Name||Pde6b, phosphodiesterase 6B, cGMP, rod receptor, beta polypeptide|
|Gene Synonym(s)||CSNB3; CSNBAD2; PDEB; Pdeb; Pdeb; RP40; nmf137; phosphodiesterase, cGMP, rod receptor, beta polypeptide; r; r; rd; rd; rd-1; rd1; rd1; rd10; rd10; retinal degeneration; retinal degeneration 1; retinal degeneration 10|
|Strain of Origin||various|
|General Note||The following inbred strains are known to be homozygous for Pde6b |
|Molecular Note||Two mutations have been identified in rd1 mice. A murine leukimia virus (Xmv-28) insertion in reverse orientation in intron 1 is found in all mouse strains with the rd1 phenotype. Further, a nonsense mutation (C to A transversion) in codon 347 that results in a truncation eliminating more than half of the predicted encoded protein, including the catalytic domain has also been identified in all rd1 strains of mice. A specific degradation of mutant transcript during or after pre-mRNA splicing is suggested.|
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