Recombinant Rat UNC5H1 Fc Chimera Protein, CF Summary
(Gln26 - Asp358)
Accession # O08721
(Pro100 - Lys330)
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CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
|Formulation||Lyophilized from a 0.2 μm filtered solution in PBS.|
|Reconstitution||Reconstitute at 100 μg/mL in sterile PBS.|
|Shipping||The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.|
|Stability & Storage:||Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
UNC5H1, also known as UNC5A, is a member of the UNC5 (Drosophila uncoordinated-5 homology) family of type I transmembrane proteins within the immunoglobulin (Ig) superfamily. UNC5H1-4 (UNC5A-D, respectively) have two Ig and one or two thrombospondin type 1 (TSP1) domains in their extracellular regions, and a ZU-5 domain, a DCC (Deleted in Colorectal Cancer)-binding domain (DB) and a C‑terminal death domain (DD) in their cytoplasmic regions (1, 2). Rat UNC5H1 cDNA encodes 898 amino acids (aa) including a 25 aa signal peptide, a 336 aa extracellular domain with two TSP1 domains, and a 516 aa cytoplasmic domain. Within the extracellular domain, rat UNC5H1 shares approximately 98% aa sequence identity with mouse and human UNC5H1 (except for the lack of one TSP1 domain in human UNC5H1), and 65% aa identity with rat UNC5H2/UNC5B. UNC5 proteins are receptors for the netrin/UNC6 family of laminin‑related secreted axon guidance cues; UNC5H1 has been shown to bind netrin 1, 3 and 4 (2 ‑ 4). Netrins can act as a chemoattractant for some axons in the presence of DCC (Deleted in Colorectal Cancer) proteins. However, UNC5H1 association with netrins changes them to chemorepellents (1, 5, 6). UNC5H1 is expressed after developmental migration of motor neurons, presumably halting their migration (7). UNC5H1 can be removed from the cell surface via endocytosis following phosphorylation by protein kinase C (PKC) in complex with PICK1. In turn, PKC activity is regulated by the neuronal G protein‑coupled adenosine receptor A2b R (6, 8, 9). The UNC5 and DCC families also act as dependence receptors, and are pro-apoptotic in the absence of netrins (10 ‑ 13). UNC5H1 transcription is enhanced by the tumor suppressor p53, allowing increased apoptosis of tumor cells in the absence of netrin and the presence of NRAGE (13, 14).
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- Williams, M.E. et al. (2003) J. Biol. Chem. 278:17483.
Product Specific NoticesThis product or the use of this product is covered by U.S. Patents owned by The Regents of the University of California. This product is for research use only and is not to be used for commercial purposes. Use of this product to produce products for sale or for diagnostic, therapeutic or drug discovery purposes is prohibited. In order to obtain a license to use this product for such purposes, contact The Regents of the University of California. U.S. Patent # 5,939,271, 6,277,585, and other U.S. and international patents pending.
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