LDLR Protein, Human (HEK293, Fc)

LDLR Protein plays a pivotal role in cholesterol homeostasis, binding to LDL and mediating cellular uptake through endocytosis. Clustering into clathrin-coated pits is essential for internalization. In microbial infection, LDLR acts as a receptor for hepatitis C virus in hepatocytes, emphasizing its dual functionality in cholesterol metabolism and the cellular response to viral infections. LDLR Protein, Human (HEK293, Fc) is the recombinant human-derived LDLR protein, expressed by HEK293, with C-hFc labeled tag.

The LDLR Protein serves as a crucial mediator in cholesterol homeostasis by binding to low-density lipoprotein (LDL), the primary cholesterol-carrying lipoprotein in plasma, and facilitating its cellular uptake through endocytosis. To enable internalization, receptor-ligand complexes must first cluster into clathrin-coated pits. Additionally, in the context of microbial infection, LDLR acts as a receptor for the hepatitis C virus within hepatocytes, although this interaction does not occur through a direct binding with viral proteins. This dual functionality underscores the diverse roles of LDLR in both cholesterol metabolism and the cellular response to viral infections.

Human

HEK293

C-hFc

P01130-1 (A22-R788)

3949

Approximately 120-125 kDa and 140-150 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.

Greater than 95% as determined by reducing SDS-PAGE.

Lyophilized powder.

Lyophilized from 0.22 μm filtered solution of 50 mM Tris, 100 mM Glycine, 25 mM Arginine, 150 mM NaCl, pH7.5 with trehalose as protectant.
Note: For SPR assay, please replace the buffer. Primary amine components (e.g., Tris, imidazole) can affect protein-coupled chips.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.