Recombinant Human ASGPR1 Protein (C-6His)

Name: Recombinant Human ASGPR1 Protein (C-6His)
Brand: Beta LifeScience
SKU: BL-0459NP
Availability: InStock

BL-0459NP: Greater than 95% as determined by reducing SDS-PAGE. (QC verified)

Collections: All products, High-quality recombinant proteins, Other recombinant proteins

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Product Overview

Description	Recombinant Human Asialoglycoprotein Receptor 1 is produced by our Mammalian expression system and the target gene encoding Gln62-Ile291 is expressed with a 6His tag at the C-terminus.
Accession	P07306
Synonym	Asialoglycoprotein Receptor 1; ASGP-R 1; ASGPR 1; C-Type Lectin Domain Family 4 Member H1; Hepatic Lectin H1; HL-1; ASGR1; CLEC4H1
Gene Background	Asialoglycoprotein Receptor 1 (ASGPR1) is an endocytic recycling receptor, belongs to the long-form subfamily of the C-type/Ca2+-dependent lectin family. ASGPR consists of two noncovalently-linked subnits, ASGPR1 and ASGPR2. ASGPR1 mediates the endocytosis of plasma glycoproteins, recognizes terminal galactose and N-acetylgalactosamine units. When the ligand binds to to ASGPR1, results in the complex is internalized and transported to a sorting organelle, then ASGPR1 and ligand can be disassociated, ASGPR1 returns to the cell membrane surface.
Molecular Mass	27.43 KDa
Apmol Mass	34-48 KDa, reducing conditions
Formulation	Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.2.
Endotoxin	Less than 0.1 ng/µg (1 EU/µg) as determined by LAL test.
Purity	Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
Biological Activity	Not tested
Reconstitution	Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Storage	Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months.
Shipping	The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature listed below.
Usage	For Research Use Only

Target Details

Target Function	Mediates the endocytosis of plasma glycoproteins to which the terminal sialic acid residue on their complex carbohydrate moieties has been removed. The receptor recognizes terminal galactose and N-acetylgalactosamine units. After ligand binding to the receptor, the resulting complex is internalized and transported to a sorting organelle, where receptor and ligand are disassociated. The receptor then returns to the cell membrane surface.
Subcellular Location	[Isoform H1a]: Membrane; Single-pass type II membrane protein.; [Isoform H1b]: Secreted.
Database References	HGNC: 742 OMIM: 108360 KEGG: hsa:432 STRING: 9606.ENSP00000269299 UniGene: PMID: 28952928 PEGylated lipoplexes were well tolerated by both HEK293 (ASGP-R-negative) and HepG2 (ASGP-R-positive) cell lines and delivered DNA to the hepatoma cell line HepG2 by ASGP-R mediation at levels three-fold greater than nonPEGylated lipoplexes. PMID: 28063265 findings show that the hepatitis E virus (HEV) ORF2 protein interacts directly with the ectodomain of both ASGR1 and ASGR2; ASGPR is involved in and facilitates HEV infection by binding to ORF2 PMID: 27155063 ASGR1 can inhibit the activity of V-ATPase by interacting with LASS2, thereby suppressing the metastatic potential of hepatoma cells. PMID: 27241665 This review will focus on the mechanisms of platelet senescence with specific emphasis on the role of post-translational modifications in platelet life-span and thrombopoietin production downstream of the hepatic Ashwell-Morrell receptor, originally termed asialoglycoprotein receptor (ASGPR). PMID: 27207430 ASGR1 haploinsufficiency was associated with reduced levels of non-HDL cholesterol and a reduced risk of coronary artery disease. PMID: 27192541 Flow cytometric assessment of ASGPR expression may be a useful predictor of liver dysfunction following major hepatectomy for HCC in Chinese patients. PMID: 25404440 Anti-ASGPR antibody could be used for specific and efficient HCC CTC enrichment, and anti-P-CK combined with anti-CPS1 antibodies is superior to identification with one antibody alone in the sensitivity for HCC CTC detection. PMID: 24763545 Endocytic AMR controls TPO expression through Janus kinase 2 (JAK2) and the acute phase response signal transducer and activator of transcription 3 (STAT3) in vivo and in vitro PMID: 25485912 Anti-ASGPR levels correlate with biochemical parameters and with the severity and manifestation autoimmune processes in patients with autoimmune hepatitis. PMID: 24933948 The examined ASGPR1 expression levels by immunohistochemistry in HCC with different grades. Guidance for a targeting delivery strategy for anti-cancer drugs to HCC is suggested in this report. PMID: 23979840 the distribution of ASGR in human testis, was investigated. PMID: 23604802 the cooperative binding mode of Ca(2+) makes it possible for ASGP-R to be more sensitive to Ca(2+) concentrations in early endosomes, and plays an important role in the efficient release of ligand from ASGP-R PMID: 22613667 Constant sH2a levels suggest constitutive secretion from hepatocytes in healthy individuals; therefore, a decrease with cirrhosis suggests a diagnostic potential. PMID: 22219600 found that the asialoglycoprotein receptor (ASGPR) is involved in hepatocyte recognition of cells predestined for killing, including activated autologous T lymphocytes PMID: 21656538 Asialoglycoprotein receptor (ASGPR) interacted specifically and directly with the preS1 domain of HBV in vivo and in vitro. PMID: 21207081 Two naturally occurring ASGPR1 splice variants are produced in human hepatocytes. PMID: 20886072 our findings suggest that both fibronectin and ASGPR mediate HBsAg binding to the cell surface, which provides further evidence for the potential roles of these two proteins in mediating HBV binding to liver cells. PMID: 20364278 The minor subunit splice variants, H2b and H2c, of the human asialoglycoprotein receptor are present with the major subunit H1 in different hetero-oligomeric receptor complexes PMID: 11943787 primary renal proximal tubular epithelial cells have a functional ASGPR, consisting of the H1 and H2 subunits, that is capable of specific ligand binding and uptake PMID: 12119473 Phosphorylation-dependent interaction with molecular chaperones PMID: 12167617 the effects of palmitoylation on ASGP-R activity and function PMID: 12359251 the spacing of a Cys residue relative to the TMD in the primary protein sequence of H1 is the major determinant for successful palmitoylation PMID: 12370180 Exposure of beta-galactose results in the rapid clearance of platelets from the circulation by asialoglycoprotein receptor-expressing liver macrophages and hepatocytes. PMID: 19520807

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.