Recombinant Human Nuclear cap-binding protein subunit 2 (NCBP2)

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Code CSB-EP015521HU
Size $224
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  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Product Details

Purity
Greater than 90% as determined by SDS-PAGE.
Target Names
NCBP2
Uniprot No.
Research Area
Epigenetics and Nuclear Signaling
Alternative Names
NCBP2; CBP20; PIG55; Nuclear cap-binding protein subunit 2; 20 kDa nuclear cap-binding protein; Cell proliferation-inducing gene 55 protein; NCBP 20 kDa subunit; CBP20; NCBP-interacting protein 1; NIP1
Species
Homo sapiens (Human)
Source
E.coli
Expression Region
2-156aa
Target Protein Sequence
SGGLLKALRSDSYVELSQYRDQHFRGDNEEQEKLLKKSCTLYVGNLSFYTTEEQIYELFSKSGDIKKIIMGLDKMKKTACGFCFVEYYSRADAENAMRYINGTRLDDRIIRTDWDAGFKEGRQYGRGRSGGQVRDEYRQDYDAGRGGYGKLAQNQ
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Mol. Weight
44.9kDa
Protein Length
Full Length of Mature Protein
Tag Info
N-terminal GST-tagged
Form
Liquid or 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
Tris-based buffer,50% glycerol
Troubleshooting and 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
3-7 business days
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA
Please contact us to get it.
Description

The synthesis of the recombinant plasmid containing the gene encoding the Human NCBP2 protein (2-156aa) is the first step to produce the recombinant Human NCBP2 protein. After that, the recombinant plasmid is transformed into e.coli cells. e.coli cells capable of enduring a specific antibiotic are selected, demonstrating successful uptake of the recombinant plasmid. The e.coli cells containing the recombinant plasmid are cultured under conditions that encourage the expression of the gene of interest. A N-terminal GST tag is linked to the protein. Following expression, affinity purification is employed to isolate and purify the recombinant Human NCBP2 protein from the cell lysate. Denaturing SDS-PAGE is applied to resolve the resulting recombinant Human NCBP2 protein, indicating a purity level exceeding 90%.

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Target Background

Function
Component of the cap-binding complex (CBC), which binds co-transcriptionally 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, thereby being 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, NCBP2/CBP20 recognizes and binds capped RNAs (m7GpppG-capped RNA) but requires NCBP1/CBP80 to stabilize the movement of its N-terminal loop and lock the CBC into a high affinity cap-binding state with the cap structure. The conventional cap-binding complex with NCBP2 binds both small nuclear RNA (snRNA) and messenger (mRNA) and is involved in their export from the nucleus.
Gene References into Functions
  1. NCBP2 is not required for cell viability and poly(A) RNA export. PMID: 26382858
  2. A novel alternative splice variant of CBP20, termed CBP20S, has an in-frame deletion, leading to the translation of a protein lacking most of the RNA recognition motif (RRM). PMID: 21326824
  3. crystal structure at 2.1 A resolution of CBP20 and CBP80 bound to an m(7)GpppG cap analogue PMID: 12374755
  4. Structural basis of m7GpppG binding to the nuclear cap-binding protein complex. PMID: 12434151
  5. 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
  6. 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
  7. determined how importin-beta binds to the cap-binding complex (CBC) through its CBP20 subunit PMID: 19668212

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Subcellular Location
Nucleus. Cytoplasm.
Protein Families
RRM NCBP2 family
Database Links

HGNC: 7659

OMIM: 605133

KEGG: hsa:22916

STRING: 9606.ENSP00000326806

UniGene: Hs.591671

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