Cell Signaling Technology

Product Pathways - Chromatin Regulation / Epigenetics

Histone H2A (L88A6) Mouse mAb #3636

Applications Reactivity Sensitivity MW (kDa) Isotype
W IHC-P H M R Mk (C) (Dm) (Z) (Pg) Endogenous 14 Mouse IgG1

Applications Key:  W=Western Blotting  IHC-P=Immunohistochemistry (Paraffin)
Reactivity Key:  H=Human  M=Mouse  R=Rat  Mk=Monkey  C=Chicken  Dm=D. melanogaster  Z=Zebrafish  Pg=Pig
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

Histone H2A (L88A6) Mouse mAb detects endogenous levels of total histone H2A protein. This antibody also detects histone H2A.X.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to the carboxy terminus of human histone H2A.

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell lines using Histone H2A (L88A6) Mouse mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human lung carcinoma using Histone H2A (L88A6) Mouse mAb.

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 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).

  1. Workman, J.L. and Kingston, R.E. (1998) Annu Rev Biochem 67, 545-79.
  2. Hansen, J.C. et al. (1998) Biochemistry 37, 17637-41.
  3. Strahl, B.D. and Allis, C.D. (2000) Nature 403, 41-5.
  4. Cheung, P. et al. (2000) Cell 103, 263-71.
  5. Bernstein, B.E. and Schreiber, S.L. (2002) Chem Biol 9, 1167-73.
  6. Jaskelioff, M. and Peterson, C.L. (2003) Nat Cell Biol 5, 395-9.
  7. Thorne, A.W. et al. (1990) Eur J Biochem 193, 701-13.
  8. Hendzel, M.J. et al. (1997) Chromosoma 106, 348-60.
  9. Goto, H. et al. (1999) J Biol Chem 274, 25543-9.
  10. Preuss, U. et al. (2003) Nucleic Acids Res 31, 878-85.
  11. Dai, J. et al. (2005) Genes Dev 19, 472-88.

Application References

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Companion Products

This product is intended for research purposes only. The product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.

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