Recombinant Human Elav-Like Protein 4 (ELAVL4) Protein (His-SUMO&Myc)

Name: Recombinant Human Elav-Like Protein 4 (ELAVL4) Protein (His-SUMO&Myc)
Brand: Beta LifeScience
SKU: BLC-02855P
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 4 (ELAVL4) Protein (His-SUMO&Myc) is produced by our E.coli expression system. This is a full length protein.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	P26378
Target Symbol	ELAVL4
Synonyms	ELAV (embryonic lethal abnormal vision Drosophila) like 4; ELAV L4; ELAV like 4; ELAV like protein 4; ELAV-like protein 4; ELAV4_HUMAN; Elavl4; Embryonic lethal abnormal vision Drosophila homolog of like 4; Hu antigen D; Hu-antigen D; HuD; Paraneoplastic encephalomyelitis antigen HuD; PNEM
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	N-10His-SUMO&C-Myc
Target Protein Sequence	MVMIISTMEPQVSNGPTSNTSNGPSSNNRNCPSPMQTGATTDDSKTNLIVNYLPQNMTQEEFRSLFGSIGEIESCKLVRDKITGQSLGYGFVNYIDPKDAEKAINTLNGLRLQTKTIKVSYARPSSASIRDANLYVSGLPKTMTQKELEQLFSQYGRIITSRILVDQVTGVSRGVGFIRFDKRIEAEEAIKGLNGQKPSGATEPITVKFANNPSQKSSQALLSQLYQSPNRRYPGPLHHQAQRFRLDNLLNMAYGVKRLMSGPVPPSACPPRFSPITIDGMTSLVGMNIPGHTGTGWCIFVYNLSPDSDESVLWQLFGPFGAVNNVKVIRDFNTNKCKGFGFVTMTNYDEAAMAIASLNGYRLGDRVLQVSFKTNKAHKS
Expression Range	1-380aa
Protein Length	Full Length
Mol. Weight	61.8kDa
Research Area	Neuroscience
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 is involved in the post-transcriptional regulation of mRNAs. Plays a role in the regulation of mRNA stability, alternative splicing and translation. Binds to AU-rich element (ARE) sequences in the 3' untranslated region (UTR) of target mRNAs, including GAP43, VEGF, FOS, CDKN1A and ACHE mRNA. Many of the target mRNAs are coding for RNA-binding proteins, transcription factors and proteins involved in RNA processing and/or neuronal development and function. By binding to the mRNA 3'UTR, decreases mRNA deadenylation and thereby contributes to the stabilization of mRNA molecules and their protection from decay. Also binds to the polyadenylated (poly(A)) tail in the 3'UTR of mRNA, thereby increasing its affinity for mRNA binding. Mainly plays a role in neuron-specific RNA processing by stabilization of mRNAs such as GAP43, ACHE and mRNAs of other neuronal proteins, thereby contributing to the differentiation of neural progenitor cells, nervous system development, learning and memory mechanisms. Involved in the negative regulation of the proliferative activity of neuronal stem cells and in the positive regulation of neuronal differentiation of neural progenitor cells. Promotes neuronal differentiation of neural stem/progenitor cells in the adult subventricular zone of the hippocampus by binding to and stabilizing SATB1 mRNA. Binds and stabilizes MSI1 mRNA in neural stem cells. Exhibits increased binding to ACHE mRNA during neuronal differentiation, thereby stabilizing ACHE mRNA and enhancing its expression. Protects CDKN1A mRNA from decay by binding to its 3'-UTR. May bind to APP and BACE1 mRNAS and the BACE1AS lncRNA and enhance their stabilization. Plays a role in neurite outgrowth and in the establishment and maturation of dendritic arbors, thereby contributing to neocortical and hippocampal circuitry function. Stabilizes GAP43 mRNA and protects it from decay during postembryonic development in the brain. By promoting the stabilization of GAP43 mRNA, plays a role in NGF-mediated neurite outgrowth. Binds to BDNF long 3'UTR mRNA, thereby leading to its stabilization and increased dendritic translation after activation of PKC. By increasing translation of BDNF after nerve injury, may contribute to nerve regeneration. Acts as a stabilizing factor by binding to the 3'UTR of NOVA1 mRNA, thereby increasing its translation and enhancing its functional activity in neuron-specific splicing. Stimulates translation of mRNA in a poly(A)- and cap-dependent manner, possibly by associating with the EIF4F cap-binding complex. May also negatively regulate translation by binding to the 5'UTR of Ins2 mRNA, thereby repressing its translation. Upon glucose stimulation, Ins2 mRNA is released from ELAVL4 and translational inhibition is abolished. Also plays a role in the regulation of alternative splicing. May regulate alternative splicing of CALCA pre-mRNA into Calcitonin and Calcitonin gene-related peptide 1 (CGRP) by competing with splicing regulator TIAR for binding to U-rich intronic sequences of CALCA pre-mRNA.
Subcellular Location	Cytoplasm. Perikaryon. Cell projection, dendrite. Cell projection, axon. Cell projection, growth cone.
Protein Families	RRM elav family
Database References	HGNC: 3315 OMIM: 168360 KEGG: hsa:1996 STRING: 9606.ENSP00000349594 UniGene: PMID: 28560387 The high titres of HuD in SCLC patients and preferable consistency suggested that HuD may serve as a potential diagnostic criterium for SCLC and may serve as a marker of disease progression. PMID: 28739747 HuD binds to the APP and BACE1 3' UTRs and increases APP and BACE1 levels. PMID: 24857657 study showed HuD is associated with histological grade, iffuse invasion and nodal metastasis in oral squamous cell carcinoma; it regulates expression of VEGF-A, VEGF-D, MMP-2 and MMP-9 PMID: 25278027 Phosphomimetic mutation at position Ser 221 increased nuclear HUD export. PMID: 23978401 Alzheimer's disease brain tissues with elevated neuroserpin protein also showed increased expression of THRbeta1 and HuD PMID: 24036060 It can be involved in the pathogenesis of meningiomas in male patients. PMID: 22965691 found that p97 and its cofactor, UBXD8, destabilize p21, MKP-1, and SIRT1, three established mRNA targets of the RNA-binding protein HuR, by promoting release of HuR from mRNA PMID: 23618873 HuD is a pivotal regulator of insulin translation in pancreatic beta cells. PMID: 22387028 the endogenous function of ELAVL4 in relation to radiation sensitivity might be the regulation of cell proliferation and death PMID: 21491091 Complexes of HuD and Tax epitopes with HLA-A2 are close but imperfect structural mimics: alphabeta T-cell receptor with self antigens is driven to engage HuD in the same traditional binding mode as Tax. PMID: 21282516 alterations of nELAV genes could be involved in the onset and/or progression of a subset of neuroendocrine lung tumors. PMID: 19410329 HuD stabilizes the GAP-43 mRNA through a mechanism that is dependent on the length of the poly(A) tail and involves changes in its affinity for the mRNA PMID: 12034726 HuD expression in neuroblastoma PMID: 12209604 the importance of post-transcriptional mechanisms in regulating AChE expression in differentiating neurons and implicate HuD as a key trans-acting factor in these events PMID: 12468554 Ten HuD-derived peptides immunogenic in HLA-A*0201 restriction demonstrate in vitro binding to the HLA molecule, 8 elicit specific cytotoxic T lymphocytes (CTLs) in a murine model, 2 elicit specific human CTLs, and 1 is naturally processed and presented. PMID: 14512168 Significant T-cell activation occurred in response to 74% of the selected HuD peptides in Hu-positive patients, suggesting a role of cellular immunity during the course of anti-Hu syndrome. PMID: 15735910 potential role for ELAVL4 suggested as a modifier gene for age at onset of Parkinson's disease PMID: 15827745 propose that haploinsufficiency of HuD due to chromosome #1p deletion in neuroblastoma selects for cells that amplify N-myc genes PMID: 16278682 Increased expression of HuD in the transgenic hippocampus is associated with a concomitant increase in acetylcholinesterase transcript levels. PMID: 17234598 HuD plays a role in the post-transcriptional control of GAP-43 mRNA PMID: 17577668 Gene silencing and overexpression of the nELAV member HuD in motoneuronal NSC34 cells indicate that Nova1 mRNA stability and translation are positively and strongly controlled by the nELAV proteins PMID: 18218628 an unregulated expression of HuD disrupts mossy fiber physiology in adult mice in part by altering the expression and phosphorylation of GAP-43 and the amount of free calmodulin available at the synaptic terminal PMID: 18493953 Association with rs967582 in a third cohort further implicates ELAVL4 as a Parkinson disease susceptibility gene. PMID: 18587682 We found no evidence for the presence of HuD-specific T cells in the cerebrospinal fluid of patients with Hu-associated paraneoplastic neurological syndromes. PMID: 19252764

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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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