Human Histone RNA hairpin-binding protein(SLBP) ELISA kit

Code CSB-EL021372HU
Size 96T,5×96T,10×96T
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Product Details

Target Name
stem-loop binding protein
Alternative Names
Hairpin binding protein histone ELISA Kit; HBP ELISA Kit; Histone binding protein ELISA Kit; Histone RNA hairpin binding protein ELISA Kit; Histone RNA hairpin-binding protein ELISA Kit; Histone stem-loop-binding protein ELISA Kit; SLBP ELISA Kit; SLBP_HUMAN ELISA Kit; Stem loop (histone) binding protein ELISA Kit; Stem loop binding protein ELISA Kit
Abbreviation
SLBP
Uniprot No.
Species
Homo sapiens (Human)
Sample Types
serum, plasma, tissue homogenates, cell lysates
Detection Range
15.6 pg/mL-1000 pg/mL
Sensitivity
3.9 pg/mL
Assay Time
1-5h
Sample Volume
50-100ul
Detection Wavelength
450 nm
Research Area
Epigenetics and Nuclear Signaling
Assay Principle
quantitative
Measurement
Sandwich
Precision
Intra-assay Precision (Precision within an assay): CV%<8%
Three samples of known concentration were tested twenty times on one plate to assess.
Inter-assay Precision (Precision between assays): CV%<10%
Three samples of known concentration were tested in twenty assays to assess.
Linearity
To assess the linearity of the assay, samples were spiked with high concentrations of human SLBP in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay.
SampleSerum(n=4)
1:1Average %91
Range %86-95
1:2Average %102
Range %97-107
1:4Average %91
Range %85-97
1:8Average %97
Range %91-103
Recovery
The recovery of human SLBP spiked to levels throughout the range of the assay in various matrices was evaluated. Samples were diluted prior to assay as directed in the Sample Preparation section.
Sample TypeAverage % RecoveryRange
Serum (n=5) 9589-98
EDTA plasma (n=4)9790-100
Typical Data
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.
pg/mlOD1OD2AverageCorrected
10002.338 2.398 2.368 2.206
5001.587 1.599 1.593 1.431
2500.949 0.968 0.959 0.797
1250.599 0.589 0.594 0.432
62.50.425 0.436 0.431 0.269
31.250.293 0.316 0.305 0.143
15.60.231 0.222 0.227 0.065
00.161 0.163 0.162
Troubleshooting
and FAQs
Storage
Store at 2-8°C. Please refer to protocol.
Lead Time
3-5 working days after you place the order, and it takes another 3-5 days for delivery via DHL or FedEx
Description

This Human SLBP ELISA Kit was designed for the quantitative measurement of Human SLBP protein in serum, plasma, tissue homogenates, cell lysates. It is a Sandwich ELISA kit, its detection range is 15.6 pg/mL-1000 pg/mL and the sensitivity is 3.9 pg/mL.

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Target Background

Function
(From Uniprot)
RNA-binding protein involved in the histone pre-mRNA processing. Binds the stem-loop structure of replication-dependent histone pre-mRNAs and contributes to efficient 3'-end processing by stabilizing the complex between histone pre-mRNA and U7 small nuclear ribonucleoprotein (snRNP), via the histone downstream element (HDE). Plays an important role in targeting mature histone mRNA from the nucleus to the cytoplasm and to the translation machinery. Stabilizes mature histone mRNA and could be involved in cell-cycle regulation of histone gene expression. Involved in the mechanism by which growing oocytes accumulate histone proteins that support early embryogenesis. Binds to the 5' side of the stem-loop structure of histone pre-mRNAs.
Gene References into Functions
  1. SLBP is a potentially important cellular regulator of HIV-1, thereby establishing a link between histone metabolism, inflammation, and HIV-1 infection PMID: 27454292
  2. showed that inhibiting the SLBP mRNA and protein levels were rescued by epigenetic modifiers suggesting that nickel's effects on SLBP may be mediated via epigenetic mechanisms PMID: 28306745
  3. Cyclin F-mediated degradation of SLBP limits H2A.X accumulation and apoptosis upon genotoxic stress in G2 cell cycle checkpoint. PMID: 27773672
  4. CRL4(WDR23) is required for efficient histone mRNA 3' end processing to produce mature histone mRNAs for translation. CRL4(WDR23) binds and ubiquitylates SLBP in vitro and in vivo, and this modification activates SLBP function in histone mRNA 3' end processing without affecting its protein levels. PMID: 27203182
  5. FEM1 proteins are ancient regulators of Stem-Loop Binding Protein. PMID: 28118078
  6. CRL4-DCAF11 mediates the degradation of SLBP at the end of S phase and this degradation is essential for the viability of cells. PMID: 27254819
  7. arsenic, a carcinogenic metal, decreases cellular levels of SLBP by inducing its proteasomal degradation and inhibiting SLBP transcription via epigenetic mechanisms PMID: 25266719
  8. the S/G2 stable mutant form of SLBP is degraded by proteasome in G1, indicating that indicating that the SLBP degradation in G1 is independent of the previously identified SLBP degradation at S/G2 PMID: 24122909
  9. Although the C-terminal tail of dSLBP does not contact the RNA, phosphorylation of the tail promotes SLBP conformations competent for RNA binding and thereby appears to reduce the entropic penalty for the association. PMID: 25002523
  10. Alternative splicing allows the synthesis of HBP/SLBP isoforms with different properties that may be important for regulating HBP/SLBP functions during replication stress. PMID: 23941746
  11. C-terminal extension of Lsm4 interacts directly with the histone mRNP, contacting both SLBP and 3'hExo. PMID: 24255165
  12. Data suggest that oligomerization and SLBP phosphorylation regulate SLBP-SLIP1-histone-mRNA complex formation/disassociation; sequential and ordered assembly is required. PMID: 23286197
  13. Using yeast two-hybrid screening, the authors identify CT initiation factor-interacting protein (CTIF) as a protein that binds directly to SLBP. SLBP preferentially associates with the CT complex of histone mRNAs consisting of CBP80/CBP20, but not with the eIF4E/eIF4G (ET) complex, as has been proposed. Rapid degradation of histone mRNA on the inhibition of DNA replication requires association of SLBP with CTIF. PMID: 23234701
  14. This paper shows that SLBP is a substrate for the prolyl isomerase Pin1. Pin1, along with PP2A, facilitates dissociation of the SLBP-histone mRNA complex at the end of S-phase, thereby promoting histone mRNA decay and SLBP ubiquitination. PMID: 22907757
  15. This paper describes the biophysical characterization of human SLBP and the SLBP-SLIP1 complex. Human SLBP is an intrinsically disordered protein that is phosphorylated at 23 Ser/Thr sites when expressed in a eukaryotic expression system such as baculovirus. Unphosphorylated human SLBP forms a high affinity heterotetramer with SLIP1 and the SLBP-SLIP1 complex is regulated by SLBP phosphorylation. PMID: 23286197
  16. the crystal structure of a ternary complex of human SLBP RNA binding domain, human 3'hExo, and a 26-nucleotide stem-loop RNA is reported. PMID: 23329046
  17. The nuclear magnetic resonance and kinetic studies presented here provide a framework for understanding how SLBP recognizes histone mRNA and highlight possible structural roles of phosphorylation and proline isomerization in RNA binding proteins PMID: 22439849
  18. SLBP is the only cell cycle-regulated factor required for histone pre-mRNA processing PMID: 12588979
  19. human HBP/SLBP is essential for the coordinate synthesis of DNA and histone proteins and is required for progression through the cell division cycle PMID: 15546920
  20. SLBP is imported into the cell nucleus during the cell cycle. PMID: 15829567
  21. SLBP is required for efficient DNA replication probably because a decreased ability to assemble chromatin results in a decrease in the rate of DNA replication PMID: 15916543
  22. Removal of the phosphoryl group from T230 by either dephosphorylation or mutation results in a 7-fold reduction in the affinity of SLBP for the stem-loop RNA PMID: 16492733
  23. replication-dependent histone mRNAs are likely to be the sole target of SLBP PMID: 16931877
  24. SLBP is required for efficient histone 3'-UTR end processing. PMID: 16982637
  25. Here we show that NELF interacts with the cap binding complex (CBC), a factor that plays important roles in mRNA processing steps, and the two factors together participate in the 3' end processing of histone mRNAs, through association with the SLBP. PMID: 17499042
  26. identified five conserved residues in a 15-amino-acid region in the amino-terminal portion of SLBP, each of which is required for translation. PMID: 18025107
  27. Study concludes that the increase in cyclin A/Cdk1 activity at the end of S phase triggers degradation of SLBP at S/G(2). PMID: 18490441
  28. These results suggest a previously undescribed role for SLBP in histone mRNA export. PMID: 19155325

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Subcellular Location
Cytoplasm. Nucleus.
Protein Families
SLBP family
Tissue Specificity
Widely expressed.
Database Links

HGNC: 10904

OMIM: 602422

KEGG: hsa:7884

STRING: 9606.ENSP00000417686

UniGene: Hs.298345

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