CBX8 (D2O8C) Rabbit mAb #14696
- WB
- IP
- ChIP
- C&R
- C&T
Supporting Data
| REACTIVITY | H M R Mk |
| SENSITIVITY | Endogenous |
| MW (kDa) | 43, 48 |
| Source/Isotype | Rabbit IgG |
Application Key:
- WB-Western Blotting
- IP-Immunoprecipitation
- ChIP-Chromatin Immunoprecipitation
- C&R-CUT & RUN
- C&T-CUT & Tag
Species Cross-Reactivity Key:
- H-Human
- M-Mouse
- R-Rat
- Mk-Monkey
Product Information
Product Usage Information
For optimal ChIP and ChIP-seq results, use 10 μl of antibody and 10 μg of chromatin (approximately 4 x 106 cells) per IP. This antibody has been validated using SimpleChIP® Enzymatic Chromatin IP Kits.
The CUT&RUN dilution was determined using CUT&RUN Assay Kit #86652.
The CUT&Tag dilution was determined using CUT&Tag Assay Kit #77552.
| Application | Dilution |
|---|---|
| Western Blotting | 1:1000 |
| Immunoprecipitation | 1:200 |
| Chromatin IP | 1:50 |
| Chromatin IP-seq | 1:50 |
| CUT&RUN | 1:50 |
| CUT&Tag | 1:50 |
Storage
Protocol
Specificity / Sensitivity
CBX8 (D2O8C) Rabbit mAb recognizes endogenous levels of total CBX8 protein.
Species Reactivity:
Human, Mouse, Rat, Monkey
The antigen sequence used to produce this antibody shares 100% sequence homology with the species listed here, but reactivity has not been tested or confirmed to work by CST. Use of this product with these species is not covered under our Product Performance Guarantee.
Species predicted to react based on 100% sequence homology:
Hamster, Bovine
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Gly344 of human CBX8 protein.
Background
The polycomb group (PcG) proteins contribute to the maintenance of cell identity, stem cell self-renewal, cell cycle regulation and oncogenesis by maintaining the silenced state of genes that promote cell lineage specification, cell death and cell-cycle arrest (1-4). PcG proteins exist in two complexes that cooperate to maintain long-term gene silencing through epigenetic chromatin modifications: PRC1 and PRC2. PRC1 is a multi-subunit protein complex consisting of a combination of five core protein families: CBX, RING1, PHC, PCGF, and RYPB (5-7). Different combinations of protein family members lead to a diverse array of PRC1 complexes with distinct functions (8). At least two distinct classes of PRC1 complexes have been defined. The first class, known as canonical PRC1, contains RING1, PHC, PCGF and CBX protein subunits, but not RYPB (5-8). This class of PRC1 complexes requires PRC2 and H3K27Me3 for proper recruitment to target genes. CBX proteins mediate recruitment by binding to H3K27Me3. CBX8 in particular is required for repression of many lineage-specific genes during differentiation of hematopoietic stem cells and may play a role in activation of lineage-specific genes during differentiation of embryonic stem cells (9,10). The second class, known as variant PRC1, contains RYPB instead of CBX proteins (5-8). RYBP-containing PRC1 is recruited to chromatin independently of PRC2 and H3K27Me3. These variant PRC1 complexes can function independently of PRC2, or in some cases function upstream to recruit PRC2 complex to target genes.
- Boyer, L.A. et al. (2006) Nature 441, 349-53.
- Lee, T.I. et al. (2006) Cell 125, 301-13.
- Park, I.K. et al. (2003) Nature 423, 302-5.
- Molofsky, A.V. et al. (2003) Nature 425, 962-7.
- Tavares, L. et al. (2012) Cell 148, 664-78.
- Gao, Z. et al. (2012) Mol Cell 45, 344-56.
- Blackledge, N.P. et al. (2014) Cell 157, 1445-59.
- Luis, N.M. et al. (2012) Cell Stem Cell 11, 16-21.
- Klauke, K. et al. (2013) Nat Cell Biol 15, 353-62.
- Creppe, C. et al. (2014) PLoS Genet 10, e1004851.
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