PMID- 9331947 OWN - NLM STAT- MEDLINE DCOM- 19980205 LR - 20190826 IS - 0001-2815 (Print) IS - 0001-2815 (Linking) VI - 50 IP - 3 DP - 1997 Sep TI - Further diversification of the HLA-B locus in Central American Amerindians: new B*39 and B*51 alleles in the Kuna of Panama. PG - 251-7 AB - Several new HLA-B locus alleles have been discovered in South American Amerindians. By contrast, analysis of the MHC class I alleles of North American native populations has revealed few new HLA-B alleles. This suggests that the HLA-B locus is evolving rapidly in South American populations. Here we describe the HLA-B locus alleles present in individuals from a Central American tribe, the Kuna of Panama. Using a sequence-based typing technique that separates alleles by denaturing gradient gel electrophoresis (DGGE) followed by direct sequencing, we determined the HLA-B alleles from eight Kunas. Two of the HLA-B alleles present in the Kuna have been previously described in other South American Amerindian populations; one allele has been characterized in a Mexican-American. We characterized two new HLA-B alleles in the Kuna, HLA-B*3911 and HLA-B*5110. HLA-B*3911 differed from HLA-B*3905 by only a single nucleotide substitution in exon 3. This substitution resulted in an amino acid replacement of leucine by arginine at residue 156 in the alpha 2 domain. Such a change may affect the repertoire of peptides that are bound by this molecule. HLA-B*5110 differed significantly from other HLA-B*51 alleles in that it is the result of an unusually large intra-locus recombination event of minimally 216 nucleotides. This recombination results in an allele that is part HLA-B*51 and part HLA-B*40. Thus, more dramatic recombination events may also play a role in the rapid evolution of the HLA-B locus in Amerindians. FAU - Iwanaga, K K AU - Iwanaga KK AD - Wisconsin Regional Primate Research Center, University of Wisconsin, Madison, USA. FAU - Eberle, M AU - Eberle M FAU - Kolman, C J AU - Kolman CJ FAU - Bermingham, E AU - Bermingham E FAU - Watkins, D I AU - Watkins DI LA - eng SI - GENBANK/AF004370 SI - GENBANK/U74368 GR - RR00167/RR/NCRR NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - Tissue Antigens JT - Tissue antigens JID - 0331072 RN - 0 (HLA-B Antigens) RN - 0 (HLA-B39 Antigen) RN - 0 (HLA-B51 Antigen) SB - IM MH - Alleles MH - Amino Acid Sequence MH - Base Sequence MH - HLA-B Antigens/*genetics MH - HLA-B39 Antigen MH - HLA-B51 Antigen MH - Humans MH - Indians, Central American/*genetics MH - Molecular Sequence Data MH - Panama EDAT- 1997/10/23 00:00 MHDA- 1997/10/23 00:01 CRDT- 1997/10/23 00:00 PHST- 1997/10/23 00:00 [pubmed] PHST- 1997/10/23 00:01 [medline] PHST- 1997/10/23 00:00 [entrez] AID - 10.1111/j.1399-0039.1997.tb02868.x [doi] PST - ppublish SO - Tissue Antigens. 1997 Sep;50(3):251-7. doi: 10.1111/j.1399-0039.1997.tb02868.x.