Major Histocompatibility Complex, Class II, DP Beta 1
HLA-DP1B
HLA Class II Histocompatibility Antigen, DP(W4) Beta Chain
HLA Class II Histocompatibility Antigen, DP Beta 1 Chain
MHC Class II Antigen DPB1
HLA-DP Histocompatibility Type, Beta-1 Subunit
MHC Class II HLA-DP-Beta-1
MHC HLA DPB1
HLA-DPB
HLA-DP
DPB1
HLA-DPB belongs to the HLA class II beta chain paralogues. This class II molecule is a heterodimer consisting of an alpha (DPA) and a beta chain (DPB), both anchored in the membrane. It plays a central role in the immune system by presenting peptides derived from extracellular proteins. Class II molecules are expressed in antigen presenting cells (APC: B lymphocytes, dendritic cells, macrophages). The beta chain is approximately 26-28 kDa and its gene contains 6 exons. Exon one encodes the leader peptide, exons 2 and 3 encode the two extracellular domains, exon 4 encodes the transmembrane domain and exon 5 encodes the cytoplasmic tail. Within the DP molecule both the alpha chain and the beta chain contain the polymorphisms specifying the peptide binding specificities, resulting in up to 4 different molecules. [provided by RefSeq, Jul 2008]
Forensic Context
A study in humans analyzing sepsis patient data identified the HLA-DPB1 as a prognostic biomarker, with its expression significantly higher in sepsis non-survivors compared to survivors and associated with 28-day mortality [Li et al. DOI:10.1038/s41598-025-99619-z]. Another human study investigating monocyte-related pathways in sepsis confirmed HLA-DPB1 participates in the MHC-II signaling pathway, where it binds to CD4, and its expression was found to be reduced in sepsis non-survivors [Liu et al. DOI:10.1590/1414-431X2025e14930].