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Rat Anti-CD8B Recombinant Antibody (CBYY-C1647) (CBMAB-C3085-YY)


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Summary

Host Animal
Rat
Specificity
Mouse
Clone
CBYY-C1647
Antibody Isotype
IgG2b
Application
IP, IF, IHC-P, FC

Basic Information

Immunogen
5-day mixed leukocyte culture population, C57BL/6 anti-BALB/c.
Host Species
Rat
Specificity
Mouse
Antibody Isotype
IgG2b
Clonality
Monoclonal Antibody
Application Notes
The COA includes recommended starting dilutions, optimal dilutions should be determined by the end user.
ApplicationNote
IP1-2 µg per 100-500 µg of total protein (1 ml of cell lysate)
IF(ICC)1:50-1:500
IHC-P1:50-1:500

Formulations & Storage [For reference only, actual COA shall prevail!]

Format
Liquid
Buffer
PBS, 0.1% gelatin
Preservative
< 0.1% sodium azide
Concentration
0.2 mg/ml
Storage
Store at +4°C short term (1-2 weeks). Aliquot and store at -20°C long term. Avoid repeated freeze/thaw cycles.

Target

Full Name
CD8b Molecule
Entrez Gene ID
926
UniProt ID
P10966
Alternative Names
Cell Division Cycle 123; C10orf7; HT-1080; D123; PZ32; Cell Division Cycle 123 Homolog (S. Cerevisiae);
Function
Integral membrane glycoprotein that plays an essential role in the immune response and serves multiple functions in responses against both external and internal offenses. In T-cells, functions primarily as a coreceptor for MHC class I molecule:peptide complex. The antigens presented by class I peptides are derived from cytosolic proteins while class II derived from extracellular proteins. Interacts simultaneously with the T-cell receptor (TCR) and the MHC class I proteins presented by antigen presenting cells (APCs). In turn, recruits the Src kinase LCK to the vicinity of the TCR-CD3 complex. A palmitoylation site in the cytoplasmic tail of CD8B chain contributes to partitioning of CD8 into the plasma membrane lipid rafts where signaling proteins are enriched. Once LCK recruited, it initiates different intracellular signaling pathways by phosphorylating various substrates ultimately leading to lymphokine production, motility, adhesion and activation of cytotoxic T-lymphocytes (CTLs). Additionally, plays a critical role in thymic selection of CD8+ T-cells.
Biological Process
Adaptive immune response Source: UniProtKB-KW
Immune response Source: UniProtKB
Regulation of defense response to virus by virus Source: Reactome
Regulation of immune response Source: Reactome
T cell activation Source: UniProtKB
Transmembrane receptor protein tyrosine kinase signaling pathway Source: UniProtKB
Cellular Location
Isoform 1&2&4&5: Cell membrane. Requires the partner CD8A for efficient cell surface expression (PubMed:3145196). The heterodimer CD8A/CD8B localizes to lipid rafts due to CD8B cytoplasmic tail palmitoylation.
Isoform 3&6&7&8: Secreted
Topology
Extracellular: 22-170
Helical: 171-191
Cytoplasmic: 192-210
PTM
Phosphorylated as a consequence of T-cell activation.
Palmitoylated at the cytoplasmic tail and thereby targets the heterodimer CD8A/CD8B to lipid rafts unlike CD8A homodimers.
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For research use only. Not intended for any clinical use.

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