Faculty Research 1980 - 1989

Title

Genes for serum amyloid A proteins map to Chromosome 7 in the mouse.

Document Type

Article

Publication Date

1984

Keywords

Amyloid-Protein-SAA: ge, Animal, Chromosome-Mapping, Cloning-Molecular, DNA: ge, DNA-Restriction-Enzymes, Mice, Mice-Inbred-Strains: ge, Recombination-Genetic, SUPPORT-U-S-GOVT-P-H-S, Translocation-(Genetics)

JAX Source

MGG. 1984; 195(3):491-9.

Grant

GM18684, CA33093

Abstract

Several restriction fragment length variants have been detected among inbred strains using a mouse serum amyloid A cDNA clone. Five variants were shown to segregate as a single genetic unit and were mapped to Chromosome 7 between the glucose phosphate isomerase locus (Gpi-1) and the pink eye dilution locus (p) using recombinant inbred and congenic strains. The finding that no major MspI or BclI restriction fragments were shared between digests of DNAs from a Chromosome 7 congenic strain and its inbred partner, indicate that most, and probably all, sequences detected with the probe are clustered on Chromosome 7. Aneuploid mapping was used to show that the serum amyloid A gene complex (Saa) is proximal to the Chromosome 7 breakpoint in T(7;X)1Ct, a translocation in which the middle third of Chromosome 7 is inserted into the X-chromosome. A survey of inbred strains revealed a single common Saa haplotype and eight rare haplotypes. The complex distribution of 14 different variants suggests that recombination may have played a role in haplotype evolution.

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