0.1M Tris, 0.1M Glycine, 10% Glycerol (pH7). 0.01% Thimerosal was added as a preservative.
Store as concentrated solution. Centrifuge briefly prior to opening vial. For short-term storage (1-2 weeks), store at 4ºC. For long-term storage, aliquot and store at -20ºC or below. Avoid multiple freeze-thaw cycles.
Recombinant protein encompassing a sequence within the center region of human HLA DR beta. The exact sequence is proprietary.
Purified by antigen-affinity chromatography.
For In vitro laboratory use only. Not for any clinical, therapeutic, or diagnostic use in humans or animals. Not for animal or human consumption.
DR-13 antibody, DR-14 antibody, DR13 antibody, DR14 antibody, DRB4 antibody, HLA-DR4B antibody, HLA-DRB4 antibody, leukocyte antigen antibody, human leucocyte antigen DRB4 antibody, MHC HLA DR-beta chain antibody, "major histocompatibility complex, class II, DR beta 4 antibody", MHC class2 antigen antibody, "HLA class II histocompatibility antigen, DR beta 4 chain antibody", MHC class II antigen DRB4 antibody, DR-4 antibody, MHC class II antigen HLA-DR-beta antibody, DR4 antibody, DRB1 transplantation antigen antibody
Membrane; Single-pass type I membrane protein
HLA-DRB4 belongs to the HLA class II beta chain paralogues. This class II molecule is a heterodimer consisting of an alpha (DRA) and a beta (DRB) chain, 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 DR molecule the beta chain contains all the polymorphisms specifying the peptide binding specificities. Typing for these polymorphisms is routinely done for bone marrow and kidney transplantation. DRB1 is expressed at a level five times higher than its paralogues DRB3, DRB4 and DRB5. The presence of DRB4 is linked with allelic variants of DRB1, otherwise it is omitted. There are 4 related pseudogenes: DRB2, DRB6, DRB7, DRB8 and DRB9. [provided by RefSeq]