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Extensive DNA polymorphism at the factor XIIIa (F13A) locus and linkage to HLA

American Journal of Human Genetics 42(6): 877-883
Extensive DNA polymorphism at the factor XIIIa (F13A) locus and linkage to HLA
A 1,161-bp EcoRI fragment from the 5' end of the cDNA coding for human factor XIIIa (gene symbol F13A) was used to identify RFLPs in human DNAs. Several different RFLPs were identified with 15 different restriction enzymes. Two RFLPs detected with the restriction enzyme BamHI and one multiallelic RFLP detected with BclI were used for further studies. Linkage relationships between these three polymorphisms and the HLA complex were studied in DNA samples from the 40 Centre d'Etude du Polymorphisme Humain families. Combining all of the data to form highly informative haplotypes, we found linkage to HLA with a maximum lod score of 11.44 at a recombination fraction of .25 for males and .35 for females. These three RFLPs at the FXIIIa locus provide a highly informative marker for the short arm of chromosome 6 with an observed heterozygosity of 91%. Using this marker and the HLA locus, one can conform or exclude the assignment of gene loci to most of chromosome 6p.

Accession: 005432968

PMID: 2897163

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