PathScan® Tri-Methyl-Histone H3 (Lys4) Sandwich ELISA Kit #7125
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Supporting Data
| REACTIVITY | H |
Species Cross-Reactivity Key:
- H-Human
Product Information
Product Description
*Antibodies in this kit are custom formulations specific to kit.
Protocol
Specificity / Sensitivity
CST's PathScan® Tri-Methyl-Histone H3 (Lys4) Sandwich ELISA Kit #7125 detects endogenous levels of histone H3 when tri-methylated at Lys4. As shown in Figure 1 using the Tri-Methyl-Histone H3 (Lys4) Sandwich ELISA Kit #7125, a high level of tri-methylation at Lys4 on histone H3 is detected in COS cells when treated with TSA. The level of total histone H3 (modified and unmodified) remains unchanged as shown by Western analysis (Figure 1). Similar results are obtained when NIH/3T3 and Jurkat cells are treated with TSA (data not shown). This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species.
Species Reactivity:
Human
Background
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 posttranslational 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).
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- 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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