Flow Cytometry catalog - ROW 2019

Single-Color Conjugated Antibodies

CD309 antigen, also called KDR (Kinase insert domain receptor), or flk-1 (Fetal liver kinase 1) belongs to the VEGF (vascular endothelial growth factor) receptor family. It is known as the VEGFR-2 and is one of the three cell signaling tyrosine-kinase receptors of the VEGF family [VEGFR-1 (flt-1), VEGFR- 2 (KDR/flk-1), VEGFR-3 (flt-4)] and plays a key role in vascular development and regulation of vascular permeability. These receptors are transmembrane proteins that contain seven immunoglobulin-like domains in their extracellular part and two tyrosine kinase domain in their intracellular part. The KDR gene maps to the chromosome 4q11- q12. CD309 is the receptor for VEGF but it also binds VEGF-C, VEGF-D, and VEGF-E. Through the binding to CD309, which is expressed almost in endothelial cells, VEGF induces endothelial cell proliferation, and promotes cell migration. CD309 is expressed during early stages of embryogenesis. It has also been shown that VEGF can induce, in vivo, angiogenesis as well as permeabilization of blood vessels, and plays a central role in the regulation of vasculogenesis. It is expressed on CD34 positive cells defining a CD34+ CD309+ common precursor for both hematopoietic cells and endothelial cells called hemoangioblast. CD309 ( KDR ) CD314, also known as NKG2D, is a 42 kDa type II transmembrane protein belonging to the C- type lectin superfamily. The name NKG2D may be misleading as it is not a typical NKG2 family member. It has low homology with the other members and dimerizes with itself to form a homodimer while other members dimerize with CD94. The surface expression of NKG2D requires association with a signaling adaptor protein, a KAP10 (DAP10) homodimer that contains a Y-x-x-M motif. Upon tyrosine phosphorylation, that motif recruits and activates phosphatidylinositol 3’ (PI 3)-kinase. Unlike natural cytotoxicity receptors (NCRs), NKG2D is not only expressed by all NK cells but also by most γδ T cells and by virtually all CD8+ αβ T cells. In addition, its expression can be up-regulated on NK cells by different cytokines (IL-15, IL -12 and IFN- γ ). Human CD314 ligands identified so far are MICA and MICB, stress-inducible and broadly expressed molecules on tumors of epithelial origin, some melanomas, and ULBPs, targets of the human CMV protein, expressed on a wide range of cells. NKG2D triggering would appear to overrule the inhibitory signals delivered by the KIR and HLA class 1 interactions. NKG2D might play a complementary role in the NK-cell mediated lysis of target cells that appear to express HLA class I molecules normally and that express one or more NKG2D- specific ligands. CD314 ( NKG2D ) Form Clone: KDR-1 Isotype: IgG1 Mouse Part# Format Size Status Line Quality Standard PE IOTest IOTest ASR ASR A64615 A64616 Liquid Liquid 2 mL 1 mL GMP GMP PC7

KDR transfected Cell line.

Lysed normal whole blood sample.

Clone: ON72

Isotype: IgG1 Mouse

The ON72 antibody has been used in flow cytometry to analyze the expression of NKG2D on NK cells.

Form

Size

Format

Part#

Status

Line Quality Standard

PE

A08934 A22329

1 mL

Liquid Liquid

ASR ASR

IOTest IOTest

GMP GMP

APC

0.5 mL

If you require a different antibody fluorochrome combination, please refer to the Custom Design Services on page 14 or contact us via: cds.support@beckman.com ANTIBODIES & KITS 108 Outside US Flow Cytometry Catalog