Recombinant Human Nf-Kappa-B-Repressing Factor (NKRF) Protein (His)

Name: Recombinant Human Nf-Kappa-B-Repressing Factor (NKRF) Protein (His)
Brand: Beta LifeScience
SKU: BLC-08559P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

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

Our products are highly customizable to meet your specific needs. You can choose options such as endotoxin removal, liquid or lyophilized forms, preferred tags, and the desired functional sequence range for proteins. Submitting a written inquiry expedites the quoting process.

Submit an inquiry today to inquire about all available size options and prices! Connect with us via the live chat in the bottom corner to receive immediate assistance.

Product Overview

Description	Recombinant Human Nf-Kappa-B-Repressing Factor (NKRF) 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	O15226
Target Symbol	NKRF
Synonyms	NKRF; ITBA4; NRF; NF-kappa-B-repressing factor; NFkB-repressing factor; Protein ITBA4; Transcription factor NRF
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	N-6His
Target Protein Sequence	ILQMAEGIDIGEMPSYDLVLSKPSKGQKRHLSTCDGQNPPKKQAGSKFHARPRFEPVHFVASSSKDERQEDPYGPQTKEVNEQTHFASMPRDIYQDYTQDSFSIQDGNSQYCDSSGFILTKDQPVTANMYFDSGNPAPSTTSQQANSQSTPEPSPSQTFPESVVAEKQYFIEKLTATIWKNLSNPEMTSGSDKINYTYMLTRCIQACKTNPEYIYAPLKEIPPADIPKNKKLLTDGYACEVRCQNIYLTTGYAGSKNGSRDRATELAVKLLQKRIEVRVVRRKFKHTFGEDLVVCQIGMSSYEFPPALKPPEDLVVLGKDASGQPIFNASAKHWTNFVITENANDAIGILNNSASFNKMSIEYKYEMMPNRTWRCRVFLQDHCLAEGYGTKKTSKHAAADEALKILQKTQPTYPSVKSSQCHTGSSPRGSGKKKDIKDLVVYENSSNPVCTLNDTAQFNRMTVEYVYERMTGLRWKCKVILESEVIAEAVGVKKTVKYEAAGEAVKTLKKTQPTVINNLKKGAVEDVISRNEIQGRSAEEAYKQQIKEDNIGNQLLRKMGWTGGGLGKSGEGIREPISVKEQHKREGLGLDVERVNKIAKRDIEQIIRNYARSESHTDLTFSRELTNDERKQIHQIAQKYGLKSKSHGVGHDRYLVVGRKRRKEDLLDQLKQEGQVGHYELVMPQ
Expression Range	4-688aa
Protein Length	Partial
Mol. Weight	81.1kDa
Research Area	Cell Biology
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	Interacts with a specific negative regulatory element (NRE) 5'-AATTCCTCTGA-3' to mediate transcriptional repression of certain NK-kappa-B responsive genes. Involved in the constitutive silencing of the interferon beta promoter, independently of the virus-induced signals, and in the inhibition of the basal and cytokine-induced iNOS promoter activity. Also involved in the regulation of IL-8 transcription.
Subcellular Location	Nucleus, nucleolus.
Database References	HGNC: 19374 OMIM: 300440 KEGG: hsa:55922 STRING: 9606.ENSP00000442308 UniGene: PMID: 28096332 Data suggest that L protein from LCMV interactions with host proteome, specifically DDX3X, NKRF, and TRIM21. (LCMV = Lymphocytic choriomeningitis mammarenavirus; DDX3X = DEAD-box helicase 3; NKRF = NF-kappa-B-repressing factor; TRIM21 = tripartite motif-containing protein-21) PMID: 29261807 depletion of NKRF, XRN2 or DHX15 impairs an early pre-rRNA cleavage step. PMID: 28115624 NF-kappaB-repressing factor (NKRF) phosphorylation modulates promoter-proximal transcription elongation of NF-kappaB/NKRF-regulated genes via direct interactions with elongation complex in response to specific stimuli PMID: 26340924 The up-regulated NKRF serves as an endogenous repressor for IP-10 and IL-8 synthesis to hinder host from robust response to MTb infection. PMID: 25135111 MIR29 targets and reduces expression of CLDN1 and NKRF to increase intestinal permeability in inflammatory bowel disease. PMID: 25277410 NRF may serve as an endogenous repressor to prevent robust increase in IP-10/CXCL10 and IL-8/CXCL8 when TB bacterial load is high. PMID: 24223729 The expression of NKRF is decreased in PBMCs of patients with stable COPD. The downregulation of NKRF was found to be closely related to enhanced IL-8 production from these peripheral blood cells through de-repression of the IL-8 promoter. PMID: 22441735 The results indicate that JKTBP1 regulates the level of NRF protein expression by binding to both NRF 5' and 3' UTRs. PMID: 21300069 role of NF-kappa B-repressing factor (NRF) in basal repression of the hiNOS gene PMID: 12381793 cDNA is 3247 bp long, contains three exons and maps to human chromosome Xq24. NRF is widely expressed in human tissues. PMID: 14744032 Full-length NRF is highly enriched in nucleoli and only a small fraction of NRF is found in the nucleoplasm and cytoplasm PMID: 15226370 NRF interrupts the regulatory coupling of LTR binding factors and transcription elongation events; this inhibitory mechanism might contribute to transcriptional quiescence of integrated HIV-1 provirus PMID: 16107696 Induction of MMP-9 gene expression is regulated by oscillatory/cumulative activation of NFkappaB in a colon cancer cell line. PMID: 17186550 The data of this study show that JKTBP1 and the 14-nt element act independently to mediate NRF internal ribosome entry segment activity. PMID: 17592041 saimiri transformation-associated protein of subgroup C induces NF-kappaB activation PMID: 18560378 Induction of NRF in human airway smooth muscle cells by neutrophil elastase mediates the suppression of interleukin (IL)-8/CXCL8 expression. PMID: 19542452

FAQs

Please fill out the Online Inquiry form located on the product page. Key product information has been pre-populated. You may also email your questions and inquiry requests to sales1@betalifesci.com. We will do our best to get back to you within 4 business hours.

Feel free to use the Chat function to initiate a live chat. Our customer representative can provide you with a quote immediately.

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.