Anti-CD168/HMMR Antibody Picoband®

HMMR, Hyaluronan-mediated motility receptor, is a protein which in humans is encoded by the HMMR gene. RHAMM was originally discovered as a soluble protein that altered migratory cell behavior and bound to hyaluronan, HMMR is less well studied than the main hyaluronan (HA) receptor, CD44. In contrast to CD44 and other cell-surface receptors which contain the classical membrane spanning domain and signal sequence for secretion from the endoplasmic reticulum/Golgi complex, HMMR does not contain a membrane spanning domain nor does the mRNA transcript contain a signal sequence. HMMR normally is localized inside the cell and is only release by certain, poorly defined stimuli. The transport of HMMR to the extracellular space still is unclear but may involve transport channels or proteins, flippase activity, or exocytosis. Intracellularly, HMMR associates with microtubules and, working with BRCA1 and BARD1, plays a role in the regulation of mitosis. Extracellularly, HMMR associates with CD44, and upon binding to HA, activates intracellular signaling pathways. Variants of HMMR caused by alternative splicing have been observed, but not thoroughly studied.

Hyaluronan mediated motility receptor; Intracellular hyaluronic acid-binding protein; Receptor for hyaluronan-mediated motility; CD168; HMMR; IHABP, RHAMM

Involved in cell motility. When hyaluronan binds to HMMR, the phosphorylation of a number of proteins, including PTK2/FAK1 occurs. May also be involved in cellular transformation and metastasis formation, and in regulating extracellular- regulated kinase (ERK) activity.

1. Entwistle, J., Zhang, S., Yang, B., Wong, C., Li, Q., Hall, C. L., Jingbo, A., Mowat, M., Greenberg, A. H., Turley, E. A.Characterization of the murine gene encoding the hyaluronan receptor RHAMM.Gene 163: 233-238, 1995. 2. Hall, C., Yang, B., Yang, X., Zhang, S., Turley, M., Samuel, S., Lange, L. A., Wang, C., Curpen, G. D., Savani, R. C., Greenberg, A. H., Turley, E. A.Overexpression of the hyaluronan receptor RHAMM is transforming and is also required for H-ras transformation.Cell 82: 19-28, 1995. 3. Savani, R. C., Wang, C., Yang, B. H., Zhang, S. W., Kinsella, M. G., Wight, T. N., Stern, R., Nance, D. M., Turley, E. A.Migration of bovine aortic smooth muscle cells after wounding injury: the role of hyaluronan and RHAMM.J. Clin. Invest. 95: 1158-1168, 1995.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.