Anti-IRAK4 Antibody Picoband® Fluoro488 Conjugated

IRAK-4 (interleukin-1 receptor-associated kinase 4), also called REN64, in the IRAK family, is a protein kinase involved in signaling innate immune responses from Toll-like receptors. It also supports signaling from T-cell receptors. Scott (2002) mapped the REN64/IRAK4 gene to chromosome 12 based on similarity between the REN64 sequence (GenBank AF155118) and a chromosome 12 clone (GenBank AC093012) . Functional analysis by Li et al. (2002) determined that IRAK4, like IRAK1 and Pelle, has auto- and cross-phosphorylation kinase activity. Precipitation and binding analyses showed weak interaction between IRAK4 and IRAK1, but IRAK4 did not interact with other IRAK family members. Overexpressed IRAK4 interacted with MYD88 and TRAF6 and activated mitogen-activated protein kinase (MAPK) and nuclear factor kappa-B (NFKB) pathways.

Expressed in the heart, brain, lung, skeletal muscle, kidney, pancreas and testis. Expressed in the eye. High levels are seen in the placenta while low levels are seen in the liver.

Adaptive Immunity, Angiogenesis, Atherosclerosis, Cardiovascular, Cell Adhesion Molecules, Cell Type Markers, Hematopoietic Progenitors, Immunology, Myeloid, Platelets, Stem Cells, Vascular Inflammation

Potent tight-binding inhibitor of several G1 cyclin/CDK complexes (cyclin E-CDK2, cyclin D2-CDK4, and cyclin A-CDK2) and, to lesser extent, of the mitotic cyclin B-CDC2. Negative regulator of cell proliferation. May play a role in maintenance of the non-proliferative state throughout life.

1. Day, N., Tangsinmankong, N., Ochs, H., Rucker, R., Picard, C., Casanova, J.-L., Haraguchi, S., Good, R. Interleukin receptor-associated kinase (IRAK-4) deficiency associated with bacterial infections and failure to sustain antibody responses. J. Pediat. 144: 524-526, 2004. 2. Li, S., Strelow, A., Fontana, E. J., Wesche, H. IRAK-4: a novel member of the IRAK family with the properties of an IRAK-kinase. Proc. Nat. Acad. Sci. 99: 5567-5572, 2002. 3. Scott, A. F. Personal Communication. Baltimore, Md. 4/25/2002.