Abstract:
:The HLA-B5,B35 cross-reacting group is a large and serologically complex antigen family which includes the World Health Organization-recognized specificities HLA-B5,B51,Bw52,B35,Bw53,B18,Bw70,Bw71, and Bw72. In addition, several variants of antigens in this cross-reacting group have been described in the past but have not yet gained official recognition. A genetic basis for the complexity and the protein and molecular bases of this highly cross-reactive and polymorphic cross-reacting group have yet to be established. The potential contributions of shared amino acid sequences, the occurrence of multiple epitopes on a single HLA-B molecule, and the presence of new HLA-C antigens have been difficult to resolve. To address this issue, we have carefully examined the serologic reactions of more than 900 allo- and monoclonal antibodies (Tenth International Workshop, Third Asia-Oceanic Workshop, and local reagents) versus lymphocytes from 92 individuals of diverse ethnic origin (North American Caucasians, North American blacks, Amerindians, Middle Eastern Caucasians), 84 of whom were informative for the HLA-B5,B35 cross-reacting group and related antigens. Our results demonstrate that the HLA-B5,B35 gene products share different combinations of distinct epitopes. We have constructed a model for the evolution of this cross-reacting group by assigning polarity to distinct diversification steps utilizing principles of maximum parsimony.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Ward FE,Stewart AD,Ruiz RE,Killian P,Amos DB,Johnson AH,Kostyu DDdoi
10.1016/0198-8859(89)90035-9subject
Has Abstractpub_date
1989-11-01 00:00:00pages
151-67issue
3eissn
0198-8859issn
1879-1166pii
0198-8859(89)90035-9journal_volume
26pub_type
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