Recombinant Human Leucine-rich repeat-containing G-protein coupled receptor 4(LGR4) ,partial

Code CSB-YP883618HU
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Source Yeast
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Code CSB-EP883618HU
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Source E.coli
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Code CSB-EP883618HU-B
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Source E.coli
Conjugate Avi-tag Biotinylated
E. coli biotin ligase (BirA) is highly specific in covalently attaching biotin to the 15 amino acid AviTag peptide. This recombinant protein was biotinylated in vivo by AviTag-BirA technology, which method is BriA catalyzes amide linkage between the biotin and the specific lysine of the AviTag.
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Code CSB-MP883618HU
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Source Mammalian cell
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Product Details

Purity >85% (SDS-PAGE)
Target Names LGR4
Uniprot No. Q9BXB1
Alternative Names BNMD17; G protein coupled receptor 48; G-protein coupled receptor 48; GPR48; Leucine-rich repeat-containing G protein-coupled receptor 4; Leucine-rich repeat-containing G-protein coupled receptor 4; LGR4; LGR4_HUMAN
Species Homo sapiens (Human)
Protein Length Partial
Tag Info The following tags are available.
N-terminal His-tagged
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer before Lyophilization Tris/PBS-based buffer, 6% Trehalose, pH 8.0
Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting
and FAQs
Protein FAQs
Storage Condition Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet Please contact us to get it.

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Target Background

Function
Receptor for R-spondins that potentiates the canonical Wnt signaling pathway and is involved in the formation of various organs. Upon binding to R-spondins (RSPO1, RSPO2, RSPO3 or RSPO4), associates with phosphorylated LRP6 and frizzled receptors that are activated by extracellular Wnt receptors, triggering the canonical Wnt signaling pathway to increase expression of target genes. In contrast to classical G-protein coupled receptors, does not activate heterotrimeric G-proteins to transduce the signal. Its function as activator of the Wnt signaling pathway is required for the development of various organs, including liver, kidney, intestine, bone, reproductive tract and eye. May also act as a receptor for norrin (NDP), such results however require additional confirmation in vivo. Required during spermatogenesis to activate the Wnt signaling pathway in peritubular myoid cells. Required for the maintenance of intestinal stem cells and Paneth cell differentiation in postnatal intestinal crypts. Acts as a regulator of bone formation and remodeling. Involved in kidney development; required for maintaining the ureteric bud in an undifferentiated state. Involved in the development of the anterior segment of the eye. Required during erythropoiesis. Also acts as a negative regulator of innate immunity by inhibiting TLR2/TLR4 associated pattern-recognition and proinflammatory cytokine production. Plays an important role in regulating the circadian rhythms of plasma lipids, partially through regulating the rhythmic expression of MTTP.
Gene References into Functions
  1. Loss of LGR4 abrogated RSPO3-regulated osteogenesis and RSPO3-induced ERK1/2 signalling inhibition. PMID: 28220828
  2. Luciferase reporter assay was performed to confirm that LGR4 is a direct target gene of miR-137 with a potential binding site in the 3'UTR of LGR4. PMID: 29786747
  3. the host protein leucine-rich repeat-containing G protein-coupled receptor 4 (Lgr4) is essential for VSV and VSV-G pseudotyped lentivirus (VSVG-LV) to infect susceptible cells. PMID: 28842478
  4. High LGR4 expression is associated with osteoarthritis. PMID: 28777797
  5. Data (including data from studies using transgenic/knockout mice) suggest that LGR4 is key protein necessary for prostate cancer epithelial-mesenchymal transition and metastasis; LGR4 expression is elevated in human prostate cancer cell lines with metastatic potential; LGR4 silencing in prostate cancer cell line impairs cell migration and invasion without affecting cell proliferation. PMID: 28768769
  6. LGR4 is another receptor for RANKL. LGR4 competes with RANK to bind RANKL and suppresses canonical RANK signaling during osteoclast differentiation. PMID: 27064449
  7. The LGR4 A750T variant is correlated with central obesity-related characteristics in young subjects. PMID: 27925416
  8. Lgr4 is a critical positive factor for skin tumorigenesis by mediating the activation of MEK1/ERK1/2 and Wnt/beta-catenin pathways. PMID: 27693558
  9. miR-34a gene expression upregulation inhibits ARPE-19 cell proliferation, migration and adhesion partly by suppressing LGR4 expression. PMID: 27977785
  10. Lgr4 activates Jmjd2a/AR signaling pathway to promote interaction AR with PSA promoter, causing reduction of prostate cancer apoptosis and cell cycle arrest. PMID: 27743893
  11. A mechanistic understanding of RANKL-LGR4 interaction has provided new insight into LGR4 mediated RANKL signaling in osteoporosis and other diseases PMID: 27178473
  12. miR-218 directly targets LGR4 and modulated the PI3K/Akt and Wnt/beta-catenin pathways in the LNCaP-IL-6+ cells. PMID: 26986507
  13. LGR4 promotes tumorigenesis of prostate cancer via PI3K/Akt signaling pathway. PMID: 25636507
  14. These findings suggest that aberrant RSPO3-LGR4 signaling potentially acts as a driving mechanism in the aggressiveness of Keap1-deficient lung ADs. PMID: 25531322
  15. the LGR4-Rspo1 complex crystal structure shows divergent mechanisms of ligand recognition by leucine-rich repeat G-protein-coupled receptors PMID: 25480784
  16. our results suggest a previously unknown Stat3-LGR4 molecular network, which may control osteosarcoma development and progression PMID: 24455684
  17. RSPO-LGR4 not only induces the clearance of RNF43/ZNRF3 to increase Wnt receptor levels but also recruits IQGAP1 into the Wnt signaling complex. PMID: 24639526
  18. Lgr4, which regulates eye, kidney, testis, ovary, and uterine organ development as well as mental development through genetic and epigenetic surveillance, is a novel candidate gene for the pathogenesis of AGR syndrome PMID: 24519938
  19. GPR48 overexpression promotes cancer cell proliferation via activation of Wnt signaling. PMID: 24083742
  20. Lgr4 overexpression promoted glioma cell proliferation through activation of Wnt signaling. PMID: 24083766
  21. Upregulation of GPR48 resulted in increased phosphorylation of glycogen synthase kinase 3beta. PMID: 23803691
  22. A functional low-frequency human LGR4 variant (A750T) has been associated with body mass index in a Chinese obese-versus-control study. PMID: 24212090
  23. Multi-functional norrin is a ligand for the LGR4 receptor. PMID: 23444378
  24. the c.376C>T mutation is associated with low BMD and osteoporotic fractures, electrolyte imbalance, late onset of menarche, reduced testosterone levels, and an increased risk of squamous cell carcinoma of the skin and biliary tract cancer PMID: 23644456
  25. Lgr4/Gpr48 plays a critical role in modulating the TLR2/4 signaling pathway and represents a useful therapeutic approach of targeting Lgr4/Gpr48 in TLR2/4-associated septic shock and autoimmune diseases. PMID: 23589304
  26. R-Spondin potentiates Wnt/beta-catenin signaling through orphan receptors LGR4 and LGR5 PMID: 22815884
  27. LGR4 and LGR5 bind the R-spondins with high affinity and mediate the potentiation of Wnt/beta-catenin signaling by enhancing Wnt-induced LRP6 phosphorylation. PMID: 21693646
  28. GPR48 may play an important role in invasiveness and metastasis of carcinoma and might represent a potential prognostic marker or therapeutic target. PMID: 17178856
  29. Testicular efferent ducts in the mutant mouse are dramatically shortened and less convoluted than in the wild-type animal, providing an explanation to the phenotype observed in LGR4KO. PMID: 19301269
  30. Data show that GPR48 shRNA can inhibit in vitro invasion and in vivo metastasis of HeLa cells efficiently. PMID: 19550120

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Involvement in disease Osteoporosis (OSTEOP)
Subcellular Location Cell membrane; Multi-pass membrane protein.
Protein Families G-protein coupled receptor 1 family
Tissue Specificity Expressed in multiple steroidogenic tissues: placenta, ovary, testis and adrenal. Expressed also in spinal cord, thyroid, stomach, trachea, heart, pancreas, kidney, prostate and spleen.
Database Links

HGNC: 13299

OMIM: 166710

KEGG: hsa:55366

STRING: 9606.ENSP00000368516

UniGene: Hs.502176

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