HLA-DRB4 Rabbit Polyclonal Antibody

Specifications

Product Data
Applications	IHC, WB
Recommend Dilution	WB: 500-2000 WB positive control: Raji cell lysate IHC: 20-100 Positive control: Human tonsil Predicted cell location: Cell membrane
Reactivity	Human
Host	Rabbit
Clonality	Polyclonal
Immunogen	Fusion protein of human HLA-DRB4
Formulation	pH7.4 PBS, 0.05% NaN3, 40% Glycerol
Purification	Antigen affinity purification
Conjugation	Unconjugated
Storage Condition	Store at -20°C.
Predicted Protein Size	30 kDa
Gene Name	major histocompatibility complex, class II, DR beta 4
Database Link	Entrez Gene 3126 Human UniProt ID P13762
Background	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.
Synonyms	DR-4; DR4; DRB4; HLA-DR4B
Reference Data

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