Rat Layilin / LAYN Protein (Fc Tag)

LAYN

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Catalog Number	P80431-R02H
Organism Species	Rat
Host	Human Cells
Synonyms	LAYN
Molecular Weight	The recombinant rat LAYN/Fc is a disulfide-linked homodimer. The reduced monomer comprises 440 amino acids and has a predicted molecular mass of 49.8 kDa. The apparent molecular mass of the protein is approximately 55 kDa in SDS-PAGE under reducing conditions due to glycosylation.
predicted N	His 25
SDS-PAGE
Purity	> 95 % as determined by SDS-PAGE
Protein Construction	A DNA sequence encoding the rat LAYN (NP_001178926.1) (Met1-Glu224) was expressed with the Fc region of human IgG1 at the C-terminus.
Bio-activity
Research Area	Cancer |Invasion microenvironment |Adhesion molecule |Cell adhesion |Lectin |C-tyep lectin |
Formulation	Lyophilized from sterile PBS, pH 7.4. 1. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
Background	Layilin, a recently characterized as a 55 kDa transmembrane protein with homology to C-type lectins, is present in numerous cell lines and tissue extracts. As one of the adaptor proteins, talin mediates the interactions between the actin filaments and the cell membrane by binding to integral membrane proteins and to the cytoskeleton. Layilin is a newly identified membrane-binding site for talin in peripheral ruffles of spreading cells, a ten-amino acid motif in the layilin cytoplasmic domain is sufficient for talin binding, and its adjacent LH2-LH3 tandem arrays in the cytoplasmic domain provide docking sites for talin. Furthermore, talin binds layilin, PIPK1gamma and integrins in similar although subtly different ways. Layilin binds specifically to hyaluronan (HA) through its extracellular domain, a ubiquitous extracellular matrix component in most animal tissues and body fluids, but not to other tested glycosaminoglycans. The research suggests that layilin may mediate signals from extracellular matrix to the cell cytoskeleton via interaction with different intracellular binding partners and thereby be involved in the modulation of cortical structures in the cell. All the above actions reveal an interesting parallel between layilin and the known HA receptor CD44. In addition, merlin and radixin have been identified as different intracellular binding partners of layilin. Accordingly, it has been suggested that layilin plays roles in a variety of cellular processes, including cell shape, adhesion, motility, and homeostasis, as well as signal transduction. In addition, layilin might play an important role in the process of invasion and lymphatic metastasis of lung carcinoma.
Reference	Borowsky ML, et al. (1998) Layilin, a novel talin-binding transmembrane protein homologous with C-type lectins, is localized in membrane ruffles.J Cell Biol. 143(2):429-42. Bono P, et al. (2001) Layilin, a novel integral membrane protein, is a hyaluronan receptor. Mol Biol Cell. 12(4)891-900. Bono P, et al. (2005) Layilin, a cell surface hyaluronan receptor, interacts with merlin and radixin. Exp Cell Res. 308(1):177-87. Scoles DR. (2007) The merlin interacting proteins reveal multiple targets for NF2 therapy. Biochim Biophys Acta. 1785(1):32-54. Chen Z, et al. (2008) Down-regulation of layilin, a novel hyaluronan receptor, via RNA interference, inhibits invasion and lymphatic metastasis of human lung A549 cells. Biotechnol Appl Biochem. 50(Pt 2):89-96. Wegener KL, et al. (2008) Structural basis for the interaction between the cytoplasmic domain of the hyaluronate receptor layilin and the talin F3 subdomain. J Mol Biol. 382(1):112-26.