X-ray crystal structure of HLA-DR4 (DRA*0101, DRB1*0401) complexed with a peptide from human collagen II.
Dessen, A., Lawrence, C.M., Cupo, S., Zaller, D.M., Wiley, D.C.(1997) Immunity 7: 473-481
- PubMed: 9354468 
- DOI: 10.1016/s1074-7613(00)80369-6
- Primary Citation of Related Structures:  
2SEB - PubMed Abstract: 
Genetic predisposition to rheumatoid arthritis (RA) is linked to the MHC class II allele HLA-DR4. The charge of the amino acid at DRbeta71 in the peptide-binding site appears to be critical in discriminating DR molecules linked to increased disease susceptibility ...