Recombinant Human Elav-Like Protein 1 (ELAVL1) Protein (Flag)

Name: Recombinant Human Elav-Like Protein 1 (ELAVL1) Protein (Flag)
Brand: Beta LifeScience
SKU: BLC-00185P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

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

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Product Overview

Description	Recombinant Human Elav-Like Protein 1 (ELAVL1) Protein (Flag) is produced by our E.coli expression system. This is a full length protein.
Purity	Greater than 90% as determined by SDS-PAGE.
Activity	Not tested.
Uniprotkb	Q15717
Target Symbol	ELAVL1
Synonyms	(Hu-antigen R)(HuR)
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	C-Flag
Target Protein Sequence	SNGYEDHMAEDCRGDIGRTNLIVNYLPQNMTQDELRSLFSSIGEVESAKLIRDKVAGHSLGYGFVNYVTAKDAERAINTLNGLRLQSKTIKVSYARPSSEVIKDANLYISGLPRTMTQKDVEDMFSRFGRIINSRVLVDQTTGLSRGVAFIRFDKRSEAEEAITSFNGHKPPGSSEPITVKFAANPNQNKNVALLSQLYHSPARRFGGPVHHQAQRFRFSPMGVDHMSGLSGVNVPGNASSGWCIFIYNLGQDADEGILWQMFGPFGAVTNVKVIRDFNTNKCKGFGFVTMTNYEEAAMAIASLNGYRLGDKILQVSFKTNKSHK
Expression Range	2-326aa
Protein Length	Full Length of Mature Protein
Mol. Weight	37.1 kDa
Research Area	Epigenetics And Nuclear Signaling
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	RNA-binding protein that binds to the 3'-UTR region of mRNAs and increases their stability. Involved in embryonic stem cells (ESCs) differentiation: preferentially binds mRNAs that are not methylated by N6-methyladenosine (m6A), stabilizing them, promoting ESCs differentiation. Binds to poly-U elements and AU-rich elements (AREs) in the 3'-UTR of target mRNAs. Binds avidly to the AU-rich element in FOS and IL3/interleukin-3 mRNAs. In the case of the FOS AU-rich element, binds to a core element of 27 nucleotides that contain AUUUA, AUUUUA, and AUUUUUA motifs. Binds preferentially to the 5'-UUUU[AG]UUU-3' motif in vitro. With ZNF385A, binds the 3'-UTR of p53/TP53 mRNA to control their nuclear export induced by CDKN2A. Hence, may regulate p53/TP53 expression and mediate in part the CDKN2A anti-proliferative activity. May also bind with ZNF385A the CCNB1 mRNA. Increases the stability of the leptin mRNA harboring an AU-rich element (ARE) in its 3' UTR.
Subcellular Location	Cytoplasm. Nucleus. Cytoplasm, Stress granule.
Protein Families	RRM elav family
Database References	HGNC: 3312 OMIM: 603466 KEGG: hsa:1994 STRING: 9606.ENSP00000385269 UniGene: PMID: 30182452 HuR associates with TERC in vitro and in cultured cells. The association of HuR with TERC was required for the maintenance of TERC methylation and hence telomerase activity. Additionally, the regulation of telomerase activity by HuR was found to impact on the renewal of hematopoietic stem cells and was linked to dyskeratosis congenita, aplastic anemia, and autosomal dominant dyskeratosis congenita. PMID: 29880812 this study identified an essential Jun/miR-22/HuR regulatory axis in CRC (the working model is summarised in Fig. 8) and highlighted the vital role of HuR and miR-22 in CRC proliferation and migration. PMID: 29351796 RNA immunoprecipitation and RNA pull-down assays in glioma cell lines demonstrated that SNHG12 was associated with and was stabilized by Hu antigen R. Glioma patients with high levels of SNHG12 exhibited a reduced 5-year overall survival rate. PMID: 30015836 Knockdown of HuR significantly increases the apoptosis of airway epithelial cells and down-regulates ZEB-1 expression. PMID: 29866111 High HUR expression is associated with Invasive Breast Carcinoma. PMID: 28808873 HuR acts as a tumor promoter by enhancing YAP expression in osteosarcoma cells. PMID: 29597092 Study supports HuR's role as an upstream regulator of p62 expression in ARPE-19 cells, helps to understand better the early events in response to a proautophagy stimulus. PMID: 29576851 Our data...strongly suggest that HuR expression...could be used as a prognostic marker in melanoma. PMID: 29393978 HuR protein is expressed in the majority of the cases in all the tumors of the head and neck region examined. More importantly, higher levels of HuR expression have been noted, showing higher cytoplasmic levels in malignant or premalignant cases. Moreover, HuR modulates several genes implicated in biological processes important for malignant transformation, growth, and invasiveness. [review] PMID: 29619127 Radiation-activated ataxia-telangiectasia mutated kinase/p38 signaling positively contributed to the nucleus to cytosol translocation of HuR. PMID: 29856906 that HuR is involved in the process of acquiring malignant histopathological features and ability to invade the muscularis propria by urothelial bladder cancer cells PMID: 29566946 HuR facilitated lung cancer stemness dependent on CDK3 expression. miR-873 or miR-125a-3p level was negatively correlated with HuR and CDK3 expression levels in lung cancer tissues. HuR facilitates lung cancer stemness via regulating miR-873/CDK3 and miR-125a-3p/CDK3 axis. PMID: 29344850 HuR plays an important role in the progression of esophageal carcinoma by targeting IL-18. PMID: 28231690 the promotive effects of HuR overexpression on the inflammatory response were attenuated when HUVECs were cotreated with HMGB1 short hairpin RNA. Therefore, the present results indicated that the ectopic expression of HuR may induce inflammatory responses and thus sepsis by activating the HMGB1 signaling pathway. PMID: 29115544 Computational analysis of publicly available microarray datasets of non-small cell lung cancer (NSCC) treated with EGFR targeted therapy identified ESR1 and ELAV1 as the most highly ranked hub genes involved in the NSCLC acquired TKI-resistance. PMID: 29758295 Studies indicate that by regulating the mRNAs of target genes, Hu antigen R protein (HuR) is causally linked to the onset and progression of kidney diseases [Review]. PMID: 28910975 The widespread distribution of intronic adenylate-uridylate (AU)-rich elements (AREs) and their particular association with ELAVL1/HuR and ELAVL1/HuR binding sites indicates that more than half of human genes can be regulated post-transcriptionally by AREs. PMID: 29413897 Posttranscriptional regulation of HuR by miR-133b enhances DTX cytotoxicity through inhibition of ABCG2. PMID: 29327946 HuR is required for pancreatic ductal adenocarcinoma tumor growth. PMID: 28242812 Transgenic expression of HuR in astrocytes accentuated neuronal injury and other secondary features of spinal cord injury including increased vascular permeability and astrocyte activation. PMID: 28487080 HuR may be involved in the pathogenesis of glaucoma. PMID: 29107807 Findings reveal a new mechanism whereby HUR protects NONO from mir320-mediated degradation upon UVC exposure and identify a new component within the complex network of players underlying the DNA damage response adding mir320a to the list of p53-regulated targets upon genotoxic stress. PMID: 27816966 ectopic expression of HuR promotes breast cancer cell proliferation and survival by directly binding to and stabilizing CDK3 mRNA. PMID: 28501005 New ELAVL1-TYK2 fusion gene is oncogenic in acute myeloid leukemia. PMID: 27189703 High expression of HuR is correlated with thyroid cancer. PMID: 27542231 Folate deficiency impaired spermatogenesis and reduced sperm concentration may partly due to inhibiting the expression of the three key molecules (Esr1, Cav1 and Elavl1) essential for sperm production. PMID: 28445960 these studies demonstrate that HuR knockdown in triple-negative breast cancer cells elicits oxidative stress and DNA damage resulting in radiosensitization PMID: 27588488 LncRNA-AK058003 can reduce the expression of mRNA stabilizing protein HuR and act as a precursor of miR-15a to suppress gamma-synuclein-mediated cell proliferation and the metastasis of hepatocellular carcinoma. PMID: 28035067 These results indicate that HuR plays an important role in adenovirus replication, at least in part, by up-regulating IVa2 mRNA expression and that AU-rich element (ARE)-mRNA stabilization is required for both transformation and virus replication. PMID: 29225167 Data indicate that both ELAVL1 and TIAR positively regulate endogenous SNCA in vivo. PMID: 29149290 identified HuR as a novel posttranscriptional regulator of ABCA1 expression and cellular cholesterol homeostasis, thereby opening new avenues for increasing cholesterol efflux from atherosclerotic foam macrophages and raising circulat-ing HDL cholesterol levels. PMID: 24729624 HuR expression and cytoplasmic localization were increased in fibrotic livers. S1P induced migration of human bone marrow Mesenchymal Stem Cells via S1PR3 and HuR. PMID: 27543493 RNA-binding protein HuR (HuR) expression negatively correlated with chemokine (CC motif) ligand 5 (CCL5) expression and macrophage appearance in a cohort of breast tumors. PMID: 28731284 Data indicate no correlation between RNA-binding protein HuR intracellular localization in tumor sections and progression free survival. PMID: 26943573 our research demonstrated that NEAT1 acts as a key regulator in human ovarian carcinogenesis and revealed two regulatory factors (HuR and miR-124-3p) of NEAT1 expression. PMID: 27075229 The crucial role of HuR as a stabilizing factor for the MR transcript. PMID: 28744670 study found cytoplasmic HuR is significantly overexpressed in higher-grade (atypical and anaplastic) than in lower-grade meningiomas and the HuR level is correlated with survival in patients with meningioma; siHuR-induced HuR knockdown was shown to reduce the growth of both Ben-Men-1 and IOMM-Lee cells PMID: 28493484 combined treatments of siHuR and epirubicin significantly reduced the expression of Bcl-2, but increased the expression of Bax, as well as activity and expression levels of caspase-3 and -9. In contrast, overHuR abrogated these effects PMID: 28968471 High HuR expression is associated with pancreatic ductal adenocarcinomas. PMID: 28687616 GPRC5A is a potential oncogene in pancreatic ductal adenocarcinoma cells that is upregulated by gemcitabine with help from HuR. PMID: 27415424 Hur role in the epithelial-to-mesenchymal transition in pancreatic cancer PMID: 28965949 exposing glioma cells to the HuR inhibitor tanshinone group compound 15,16-dihydrotanshinone-I or to the newly identified compound 5 disrupts HuR multimerization modules and reduces tumor cell survival and proliferation. PMID: 28790173 We propose that the extensive binding of CircPABPN1 to HuR prevents HuR binding to PABPN1 mRNA and lowers PABPN1 translation, providing the first example of competition between a circRNA and its cognate mRNA for an RBP that affects translation. PMID: 28080204 HuR contributes to efficient oxidative phosphorylation by regulating of CoQ10 biosynthesis. PMID: 26690054 Data (including data from studies using knockout mice or cells from knockout mice) suggest HUR post-transcriptionally regulates CCR6 expression by binding to and stabilizing CCR6 mRNA and by promoting CCR6 translation in helper T-cells; knock-out of HUR reduces CCR6 expression on helper T-cells, impairs their migration to CNS, and prevents experimental autoimmune encephalomyelitis. (CCR6 = C-C chemokine receptor type 6) PMID: 28684423 Taken together, our results indicate that HuR activation is an early event in familial adenomatosis polyposis (FAP)--adenoma but is not present in inflammatory bowel disease (IBD)-dysplasia. Furthermore, our results offer a preclinical proof of concept for HuR inhibition as an effective means of FAP chemoprevention, with caution advised in the setting of IBD PMID: 28428272 Negative regulation of RNA-binding protein HuR by tumor-suppressor ECRG2 PMID: 26434587 Data suggest that ERBB2 is post-transcriptionally up-regulated in tamoxifen-resistant estrogen receptor-positive breast cancer cells; ERBB2 expression is decreased post-transcriptionally by miRNA26a/b binding to its 3prime- untranslated region; ERBB2 expression is increased post-transcriptionally by HuR binding to its 3prime-untranslated region. (ERBB2 = epidermal growth factor receptor 2; HuR = Hu antigen R) PMID: 28637868 by modulating extracellular export of miR-122, HuR could control stress response in starved human hepatic cells. PMID: 27402548

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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.

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