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Table 1 Overview of human MHC class II loci, allele and polymorphism.

From: Peptide binding predictions for HLA DR, DP and DQ molecules

Locus

Gene

Chain

# of alleles

HLA-DP

HLA-DPA1

alpha

28

HLA-DP

HLA-DPB1

beta

138

HLA-DQ

HLA-DQA1

alpha

35

HLA-DQ

HLA-DQB1

beta

108

HLA-DR

HLA-DRA

alpha

3

HLA-DR

HLA-DRB1

beta

785

HLA-DR

HLA-DRB2

beta

1

HLA-DR

HLA-DRB3

beta

52

HLA-DR

HLA-DRB4

beta

14

HLA-DR

HLA-DRB5

beta

19

HLA-DR

HLA-DRB6

beta

3

HLA-DR

HLA-DRB7

beta

2

HLA-DR

HLA-DRB8

beta

1

HLA-DR

HLA-DRB9

beta

1

  1. Information was extracted from IMGT database. HLA-DM and HLA-DO molecules are not included as they are not expressed on cell surface.