HLA Class II Histocompatibility Antigen, DR Beta 4 Chain (HLA-DRB4) Antibody

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.

Target	HLA Class II Histocompatibility Antigen, DR Beta 4 Chain (HLA-DRB4)
Clonality	Polyclonal
Reactivity	Human
Tested Applications	ELISA, WB
Host	Rabbit
Recommended dilutions	WB: 1/1000. Optimal dilutions/concentrations should be determined by the end user.
Conjugation	Unconjugated
Immunogen	KLH-conjugated synthetic peptide between 43-72 amino acids from the N-terminal region of human HLA-DRB4.
Isotype	IgG
Form	Liquid
Purification	Purified through a protein A column, followed by peptide affinity purification.
Storage	Aliquot and store at -20°C. Avoid repeated freeze/thaw cycles.
UniProt Primary AC	P13762 (UniProt, ExPASy)
UniProt Entry Name	DRB4_HUMAN
KEGG	hsa:3126
Molecular Weight	Calculated MW: 29.9 kDa
Buffer	PBS containing 0.09% sodium azide.
Availability	Shipped within 5-10 working days.
Note	This product is for research use only.

Research Articles on HLA Class II Histocompatibility Antigen, DR Beta 4 Chain (HLA-DRB4)

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