Recombinant Human Lipolysis-Stimulated Lipoprotein Receptor (LSR) Protein (His)

Name: Recombinant Human Lipolysis-Stimulated Lipoprotein Receptor (LSR) Protein (His)
Brand: Beta LifeScience
SKU: BLC-03750P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

Based on the SEQUEST from database of E.coli host and target protein, the LC-MS/MS Analysis result of this product could indicate that this peptide derived from E.coli-expressed Homo sapiens (Human) LSR.

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Product Overview

Description	Recombinant Human Lipolysis-Stimulated Lipoprotein Receptor (LSR) Protein (His) is produced by our E.coli expression system. This is a protein fragment.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	Q86X29
Target Symbol	LSR
Synonyms	ILDR3; Immunoglobulin like domain containing receptor 3; Lipolysis Stimulated Lipoprotein Receptor; Lipolysis stimulated remnant; Lipolysis-stimulated lipoprotein receptor; LISCH; LISCH protein; LISCH7; Liver specific bHLH Zip transcription factor; LSR; LSR_HUMAN; MGC10659; MGC48312; MGC48503
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	N-6His
Target Protein Sequence	MQQDGLGVGTRNGSGKGRSVHPSWPWCAPRPLRYFGRDARARRAQTAAMALLAGGLSRGLGSHPAAAGRDAVVFVWLLLSTWCTAPARAIQVTVSNPYHVVILFQPVTLPCTYQMTSTPTQPIVIWKYKSFCRDRIADAFSPASVDNQLNAQLAAGNPGYNPYVECQDSVRTVRVVATKQGNAVTLGDYYQGRRITITGNADLTFDQTAWGDSGVYYCSVVSAQDLQGNNEAYAELIVLGRTSGVAELLPGFQAGPIED
Expression Range	1-259aa
Protein Length	Partial
Mol. Weight	31.9kDa
Research Area	Signal Transduction
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Probable role in the clearance of triglyceride-rich lipoprotein from blood. Binds chylomicrons, LDL and VLDL in presence of free fatty acids and allows their subsequent uptake in the cells.
Subcellular Location	Cell membrane; Single-pass membrane protein.
Protein Families	Immunoglobulin superfamily, LISCH7 family
Database References	HGNC: 29572 OMIM: 616582 KEGG: hsa:51599 STRING: 9606.ENSP00000354575 UniGene: PMID: 28071680 Lipolysis-stimulated lipoprotein receptor (LSR)-deficient CaCo-2 cells exhibited increased cell proliferation. PMID: 27391068 Results of this study provide novel evidence that tricellular tight junctions protein LSR negatively regulates cancer cell progression and development in endometrial cancer. PMID: 27036040 Lipolysis-stimulated lipoprotein receptors (LSRs) localized to bicellular junctions in association with myosin regulatory light chain 2 (MRLC2) at low cell densities and to tricellular contacts when myosin phosphatase target subunit 1 (MYPT1) localized to the bicellular regions. PMID: 28493278 analysis of how Clostridium difficile binary toxin CDT interacts with its host cell receptor, Lipolysis-stimulated Lipoprotein Receptor PMID: 25882847 These data show that Clostridium difficile binary toxin CDT induces clustering of the lipolysis-stimulated lipoprotein receptor into lipid rafts. PMID: 23631918 findings show that Clostridium spiroforme toxin (CST)enters target cells via the lipolysis-stimulated lipoprotein receptor; findings indicate that CST shares LSR with C. difficile CDT and C. perfringens iota toxin as a host cell surface receptor PMID: 22252869 LSR defines tricellular contacts in epithelial cellular sheets by acting as a landmark to recruit tricellulin for tricellular tight junction formation. PMID: 21245199 LISCH7 may have a role in progression of human colon cancer PMID: 17975147

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.