Immunogenetics

, Volume 25, Issue 5, pp 313–322

Isolation, expression, and the primary structure of HLA-Cw1 and HLA-Cw2 genes: Evolutionary aspects

  • Detlef Güssow
  • Rita S. Rein
  • Ingeborg Meijer
  • Wout de Hoog
  • Gerhard H. A. Seemann
  • Frans M. Hochstenbach
  • Hidde L. Ploegh
Article

DOI: 10.1007/BF00404424

Cite this article as:
Güssow, D., Rein, R.S., Meijer, I. et al. Immunogenetics (1987) 25: 313. doi:10.1007/BF00404424

Abstract

The HLA-Cw1 and -Cw2 genes were identified in a genomic library and their products characterized by biochemical methods. The HLA-Cw and -Cw2 genes, upon transfection in mouse L cells, give rise to class I antigen heavy chains that associate with neither mouse nor human beta-2 microglobulin. They are indistinguishable in isoelectric point from polypeptides identified as HLA-Cw1 and -Cw2 in human cells. The nucleotide sequence of HLA-Cw1 and -Cw2 and their comparison with HLA-Cw3, the only other known HLA-C sequence, reveal a characteristic pattern of locus-specific amino acids. A comparison of 13 different human class I primary structures leads us to speculate that the most variable region in HLA class I antigens, positions 61–83, could assume an alpha helical structure of critical importance for class I antigen function. The locus specificity and the higher degree of intralocus conservation in the COON-terminal region, especially in the transmembrane and cytoplasmic domains, must reflect evolutionary ancestry rather than positive selection. In view of the pattern and types of substitutions observed for HLA-C locus products, their function as immune response gene products is questioned.

Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • Detlef Güssow
    • 1
  • Rita S. Rein
    • 1
  • Ingeborg Meijer
    • 1
  • Wout de Hoog
    • 1
  • Gerhard H. A. Seemann
    • 1
  • Frans M. Hochstenbach
    • 1
  • Hidde L. Ploegh
    • 1
  1. 1.The Netherlands Cancer InstituteAmsterdamThe Netherlands