In addition to the Tlr4Lps-d congenic interval from C3H/HeJ, this strain is also congenic for the wild type tyrosinase allele from C3H/HeJ on chromosome 7. This strain provides a tool for analysis of markers in the region and for examining functional effects of Lpsd on BALB/c, a strain susceptible to infection, neoplastic disease including the induction of plasmacytomas and other tumors.Read More +
In addition to the Tlr4Lps-d congenic interval from C3H/HeJ, this strain is also congenic for the wild type tyrosinase allele from C3H/HeJ on chromosome 7. This strain provides a tool for analysis of markers in the region and for examining functional effects of Lpsd on BALB/c, a strain susceptible to infection, neoplastic disease including the induction of plasmacytomas and other tumors.
The Lps-d mutation arose in C3H/HeJ sometime between 1960 and 1968. In 1977 a C3H/HeJ female, derived from the colony of David Sachs at NIH, was crossed with a BALB/cAnPt male and the Tlr4Lps-d allele was transferred onto the BALB/cAnPt background by continued backcrossing. At that time it was thought that Tlr4 and Tyrp1 were tightly linked so the agouti mice, those that would be carrying the C3H/HeJ-derived dominant B (wild-type) allele of Typr1 rather than being homozygous for the BALB/cAnPt-derived recessive b allele and Tyrc allele, were selected at each generation to continue the backcross. At N6 intercrossing made the strain homozygous for Tlr4Lps-d and Tyrp1B. Backcrossing to BALB/cAnPt was resumed from N6F22. When backcrossing reached N20, the strain was intercrossed to generate this strain homozygous for Tlr4Lps-d and Tyrp1B but not Tyrc. The congenic interval encompassing Tyrp1B and Tlr4Lps-d includes at least from D4Mit151 through D4Mit26. This strain was imported into The Jackson Laboratory from Dr.Stefanie Vogel at Uniformed Services University of the Health Sciences in 1997.
|Allele Name||defective lipopolysaccharide response|
|Allele Synonym(s)||lpsd; mutant TLR4; TlrLps-d; Tlr4-; Tlr4d; TLR4lps-def; TLR4d; TLR4-M; TLR4-Mu|
|Gene Symbol and Name||Tlr4, toll-like receptor 4|
|Strain of Origin||C3H/HeJ|
|General Note||C3H/HeJ mice carry this allele. Various combinations of Lps-associated traits have been followed in crosses between C3H/HeJ and other C3H substrains, and the traits have in all cases segregated together (J:30692, J:5557, J:5593, J:5938). Some of the traits show dominance of the Tlr4lps-n allele; others, including Tlr4Lps-d, show codominance. |
Genbank ID for this allele: AF095353
|Molecular Note||This allele corresponds to a mutation in the third exon of the gene. A C-to-A substitution at coding tide position 2135 (c.2135C>A) results in an amino acid substitution that replaces proline with histidine at position 712 (p.P712H).|
The Tlr4Lps-d mutation arises from an A to C at substitution (Poltorak A et al. 1998. Science 282(5396):2085-8.[PMID: 9851930]) A single-strand conformation polymorphism (SSCP)-based assay for the Tlr
When using the C.C3-Tlr4Lps-d/J mouse strain in a publication, please cite the originating article(s) and include JAX stock #002930 in your Materials and Methods section.