Recombinant Human Nuclear Cap-Binding Protein Subunit 1 (NCBP1) Protein (His&Myc)

Name: Recombinant Human Nuclear Cap-Binding Protein Subunit 1 (NCBP1) Protein (His&Myc)
Brand: Beta LifeScience
SKU: BLC-01420P
Price: 299.0 USD
Availability: InStock

Greater than 85% as determined by SDS-PAGE.

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Size

100ug

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Product Overview

Description	Recombinant Human Nuclear Cap-Binding Protein Subunit 1 (NCBP1) Protein (His&Myc) is produced by our Baculovirus expression system. This is a full length protein.
Purity	Greater than 85% as determined by SDS-PAGE.
Uniprotkb	Q09161
Target Symbol	NCBP1
Synonyms	80 kDa nuclear cap-binding protein (CBP80) (NCBP 80 kDa subunit)
Species	Homo sapiens (Human)
Expression System	Baculovirus
Tag	N-10His&C-Myc
Target Protein Sequence	MSRRRHSDENDGGQPHKRRKTSDANETEDHLESLICKVGEKSACSLESNLEGLAGVLEADLPNYKSKILRLLCTVARLLPEKLTIYTTLVGLLNARNYNFGGEFVEAMIRQLKESLKANNYNEAVYLVRFLSDLVNCHVIAAPSMVAMFENFVSVTQEEDVPQVRRDWYVYAFLSSLPWVGKELYEKKDAEMDRIFANTESYLKRRQKTHVPMLQVWTADKPHPQEEYLDCLWAQIQKLKKDRWQERHILRPYLAFDSILCEALQHNLPPFTPPPHTEDSVYPMPRVIFRMFDYTDDPEGPVMPGSHSVERFVIEENLHCIIKSHWKERKTCAAQLVSYPGKNKIPLNYHIVEVIFAELFQLPAPPHIDVMYTTLLIELCKLQPGSLPQVLAQATEMLYMRLDTMNTTCVDRFINWFSHHLSNFQFRWSWEDWSDCLSQDPESPKPKFVREVLEKCMRLSYHQRILDIVPPTFSALCPANPTCIYKYGDESSNSLPGHSVALCLAVAFKSKATNDEIFSILKDVPNPNQDDDDDEGFSFNPLKIEVFVQTLLHLAAKSFSHSFSALAKFHEVFKTLAESDEGKLHVLRVMFEVWRNHPQMIAVLVDKMIRTQIVDCAAVANWIFSSELSRDFTRLFVWEILHSTIRKMNKHVLKIQKELEEAKEKLARQHKRRSDDDDRSSDRKDGVLEEQIERLQEKVESAQSEQKNLFLVIFQRFIMILTEHLVRCETDGTSVLTPWYKNCIERLQQIFLQHHQIIQQYMVTLENLLFTAELDPHILAVFQQFCALQA
Expression Range	1-790aa
Protein Length	Full Length
Mol. Weight	95.7 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	Component of the cap-binding complex (CBC), which binds cotranscriptionally to the 5'-cap of pre-mRNAs and is involved in various processes such as pre-mRNA splicing, translation regulation, nonsense-mediated mRNA decay, RNA-mediated gene silencing (RNAi) by microRNAs (miRNAs) and mRNA export. The CBC complex is involved in mRNA export from the nucleus via its interaction with ALYREF/THOC4/ALY, leading to the recruitment of the mRNA export machinery to the 5'-end of mRNA and to mRNA export in a 5' to 3' direction through the nuclear pore. The CBC complex is also involved in mediating U snRNA and intronless mRNAs export from the nucleus. The CBC complex is essential for a pioneer round of mRNA translation, before steady state translation when the CBC complex is replaced by cytoplasmic cap-binding protein eIF4E. The pioneer round of mRNA translation mediated by the CBC complex plays a central role in nonsense-mediated mRNA decay (NMD), NMD only taking place in mRNAs bound to the CBC complex, but not on eIF4E-bound mRNAs. The CBC complex enhances NMD in mRNAs containing at least one exon-junction complex (EJC) via its interaction with UPF1, promoting the interaction between UPF1 and UPF2. The CBC complex is also involved in 'failsafe' NMD, which is independent of the EJC complex, while it does not participate in Staufen-mediated mRNA decay (SMD). During cell proliferation, the CBC complex is also involved in microRNAs (miRNAs) biogenesis via its interaction with SRRT/ARS2 and is required for miRNA-mediated RNA interference. The CBC complex also acts as a negative regulator of PARN, thereby acting as an inhibitor of mRNA deadenylation. In the CBC complex, NCBP1/CBP80 does not bind directly capped RNAs (m7GpppG-capped RNA) but is required to stabilize the movement of the N-terminal loop of NCBP2/CBP20 and lock the CBC into a high affinity cap-binding state with the cap structure. Associates with NCBP3 to form an alternative cap-binding complex (CBC) which plays a key role in mRNA export and is particularly important in cellular stress situations such as virus infections. The conventional CBC with NCBP2 binds both small nuclear RNA (snRNA) and messenger (mRNA) and is involved in their export from the nucleus whereas the alternative CBC with NCBP3 does not bind snRNA and associates only with mRNA thereby playing a role only in mRNA export. NCBP1/CBP80 is required for cell growth and viability.
Subcellular Location	Nucleus. Cytoplasm.
Protein Families	NCBP1 family
Database References	HGNC: 7658 OMIM: 600469 KEGG: hsa:4686 STRING: 9606.ENSP00000364289 UniGene: Hs.595669

Gene Functions References

Study proposes the existence of an alternative cap-binding complex involving NCBP1 and NCBP3 that plays a key role in mRNA biogenesis. PMID: 26382858
down-regulation of CTIF using a small interfering RNA causes a redistribution of CBP80 from polysome fractions to subpolysome fractions, without significant consequence to eIF4E distribution PMID: 22493286
Cellular processes by which CBP80-CBP20 -bound messenger ribonucleoproteins (mRNPs) are remodeled to eIF4E-bound mRNPs, are overviewed. PMID: 21447822
Viral mRNA associates with the influenza virus A NS1 and the cellular NCBP1 of the nuclear cap-binding complex. PMID: 21402597
UPF1 binds PTC-containing mRNA more efficiently than the corresponding PTC-free mRNA in a way that is promoted by the UPF1-CBP80 interaction. PMID: 20691628
crystal structure at 2.1 A resolution of CBP20 and CBP80 bound to an m(7)GpppG cap analogue PMID: 12374755
Structural basis of m7GpppG binding to the nuclear cap-binding protein complex. PMID: 12434151
The organization of the CBP80-CBP20 complex suggests how the activity of eIF4G in translation initiation could be regulated through a dynamic network of overlapping intra- and intermolecular interactions. PMID: 16156639
During nonsense-mediated mRNA decay, CBP80 interacts with Upf1 and promotes the interaction of Upf1 with Upf2 but not with Stau1. PMID: 16186820
Association of CBC with PARN might have importance in the regulated recruitment of PARN to the nonsense-mediated decay pathway during the pioneer round of translation. PMID: 16317009
We show that NELF interacts with the nuclear cap binding complex (CBC), a heterodimeric, multifunctional factor that plays important roles in several mRNA processing steps, and the two factors together participate in the 3' end processing of histone mRNAs PMID: 17499042
The authors could distinguish two tyrosines, Y43 and Y20, in stabilization of the cap inside the cap-binding complex binding pocket. PMID: 19026660
a new MIF4G domain-containing protein, CTIF (CBP80/20-dependent translation initiation factor) that interacts directly with CBP80 and is part of the CBP80/20-dependent translation initiation complex PMID: 19648179
resolution X-ray structure for a cap-binding complex (CBC)-importin-alpha complex that provides a detailed picture for how importin-alpha binds to the CBP80 subunit of the CBC. PMID: 19668212

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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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