Product Pathways - Chromatin Regulation / Epigenetics
Phospho-Histone H3 (Ser28) Antibody #9713
|9713S||100 µl (10 western blots)||---||In Stock||---|
|9713P||40 µl (4 western blots)||---||In Stock||---|
|9713||carrier free and custom formulation / quantity||email request|
|W||1:1000||Human, Mouse, Hamster, D. melanogaster||Endogenous||17||Rabbit|
Species cross-reactivity is determined by western blot.
Applications Key: W=Western Blotting, IP=Immunoprecipitation, IF-F=Immunofluorescence (Frozen), IF-IC=Immunofluorescence (Immunocytochemistry), F=Flow Cytometry
Species predicted to react based on 100% sequence homology: Rat, Chicken, Xenopus, Zebrafish, Bovine.
Specificity / Sensitivity
Phospho-Histone H3 (Ser28) Antibody detects endogenous levels of histone H3 only when phosphorylated at Ser28. This antibody does not cross-react with other phosphorylated histones, including phospho-histone H3 (Ser10).
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to the amino terminus of histone H3 phosphorylated on Ser28. Antibodies are purified by protein A and peptide affinity chromatography.
Western blot analysis of lysates from CHO and HeLa cells either untreated or synchronized in metaphase by treatment with 100 ng/ml nocodazole for 4 h, followed by isolation of metaphase cells by mitotic shake-off. Blots were probed with Phospho-Histone H3 (Ser28) Antibody #9713 (upper) or Histone H3 Antibody #9715 (lower).
Confocal immunofluorescent analysis of postnatal day 1 rat brain using Phospho-Histone H3 (Ser28) Antibody (green). Blue pseudocolor = DRAQ5™ (fluorescent DNA dye).
Confocal immunofluorescent analysis of C2C12 cells using Phospho-Histone H3 (Ser28) Antibody (green). Actin filaments have been labeled with Alexa Fluor® 555 phalloidin (red). Blue pseudocolor = DRAQ5™ (fluorescent DNA dye).
Modulation of chromatin structure plays an important role in the regulation of transcription in eukaryotes. The nucleosome, made up of DNA wound around eight core histone proteins (two each of H2A, H2B, H3, and H4), is the primary building block of chromatin (1). The amino-terminal tails of core histones undergo various post-translational modifications, including acetylation, phosphorylation, methylation, and ubiquitination (2-5). These modifications occur in response to various stimuli and have a direct effect on the accessibility of chromatin to transcription factors and, therefore, gene expression (6). In most species, histone H2B is primarily acetylated at Lys5, 12, 15, and 20 (4,7). Histone H3 is primarily acetylated at Lys9, 14, 18, 23, 27, and 56. Acetylation of H3 at Lys9 appears to have a dominant role in histone deposition and chromatin assembly in some organisms (2,3). Phosphorylation at Ser10, Ser28, and Thr11 of histone H3 is tightly correlated with chromosome condensation during both mitosis and meiosis (8-10). Phosphorylation at Thr3 of histone H3 is highly conserved among many species and is catalyzed by the kinase haspin. Immunostaining with phospho-specific antibodies in mammalian cells reveals mitotic phosphorylation at Thr3 of H3 in prophase and its dephosphorylation during anaphase (11).
- Workman, J.L. and Kingston, R.E. (1998) Annu Rev Biochem 67, 545-79.
- Hansen, J.C. et al. (1998) Biochemistry 37, 17637-41.
- Strahl, B.D. and Allis, C.D. (2000) Nature 403, 41-5.
- Cheung, P. et al. (2000) Cell 103, 263-71.
- Bernstein, B.E. and Schreiber, S.L. (2002) Chem Biol 9, 1167-73.
- Jaskelioff, M. and Peterson, C.L. (2003) Nat Cell Biol 5, 395-9.
- Thorne, A.W. et al. (1990) Eur J Biochem 193, 701-13.
- Hendzel, M.J. et al. (1997) Chromosoma 106, 348-60.
- Goto, H. et al. (1999) J Biol Chem 274, 25543-9.
- Preuss, U. et al. (2003) Nucleic Acids Res 31, 878-85.
- Dai, J. et al. (2005) Genes Dev 19, 472-88.
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