Cell Signaling Technology

Product Pathways - Chromatin Regulation / Epigenetics

Acetyl-Histone H2A (Lys5) Antibody #2576

No. Size Price
2576S 100 µl ( 10 western blots ) ¥3,900.00 现货查询 购买询价
2576T 20 µl ( 2 western blots ) ¥1,500.00 现货查询 购买询价
2576 carrier free & custom formulation / quantityemail request
Applications Dilution Species-Reactivity Sensitivity MW (kDa) Isotype
W 1:1000 Human,Mouse,Rat,Monkey, Endogenous 14 Rabbit
IP 1:50
IHC-P 1:100

Species cross-reactivity is determined by western blot.

Applications Key: W=Western Blotting, IP=Immunoprecipitation, IHC-P=Immunohistochemistry (Paraffin),

Specificity / Sensitivity

Acetyl-Histone H2A (Lys5) Antibody detects endogenous levels of histone H2A only when acetylated at lysine 5. This antibody does not cross-react with other acetylated histones.

Acetyl-Histone H2A (Lys5) Antibody能够检测仅在lysine 5位点发生乙酰化的内源性histone H2A蛋白。该抗体不能与其它乙酰化的组蛋白发生交叉反应。

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic acetylated peptide corresponding to residues surrounding Lys5 of human histone H2A. Antibodies are purified by protein A and peptide affinity chromatography.

通过合成的与人源histone H2A蛋白Lys5位点周围相应的多肽片段去免疫动物从而制备出此多克隆抗体。通过蛋白A和多肽亲和层析纯化获得。

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell lines, untreated or TSA-treated (400 nM for 12 hours), using #2576 Acetyl-Histone H2A (Lys5) Antibody.

使用#2576 Acetyl-Histone H2A (Lys5) Antibody,免疫印迹(Western blot)分析不同细胞系中Acetyl-Histone H2A (Lys5)的蛋白水平,细胞分为未处理组或TSA(400 nM for 12 hours)处理组。

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical staining of paraffin-embedded human breast carcinoma, showing nuclear localization, using Acetyl-Histone H2A (Lys5) Antibody.

使用Acetyl-Histone H2A (Lys5) Antibody,免疫组化分析人源乳腺癌组织石蜡切片,显示在细胞核定位。


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).

染色质结构的修饰在调节真核细胞的转录中扮演着重要的角色。由DNA围绕和八聚体组蛋白(H2A,H2B,H3和H4各两个)共同组成的核小体是染色质的主要组成(1)。核小体的组蛋白氨基酸尾端进行不同的转录后修饰,包括乙酰化,磷酸化,甲基化和泛素化(2-5)。这些修饰通过不同的刺激产生并且对转录因子能否接近染色质有着直接的影响,所以也影响着基因的表达(6)。在大多数的物种中组蛋白H2B主要在Lys5,,12,,15和20位点上发生乙酰化(4,7)。组蛋白H3主要是在Lys9,14,18,23,27和56位点上发生乙酰化。在某些物种里H3上的Lys9位点发生乙酰化并应该在组蛋白沉积和染色质组装中扮演着重要的角色(2,3)。组蛋白H3上Ser10,Ser28和Thr11位点的磷酸化在有丝分裂和无丝分裂中都与染色质的缩合紧密相连(8-10)。H3的Thr3位点的磷酸化在许多物种中都是高度保守的,是由kinase haspin所催化的。在哺乳动物中用磷酸化特异性的抗体做免疫组化显示H3的Thr3位点在有丝分裂的前期发生磷酸化,后期发生去磷酸化(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.
  12. Ikura, T. et al. (2007) Mol Cell Biol 27, 7028-40.

Application References

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Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

Cell Signaling Technology® is a trademark of Cell Signaling Technology, Inc.

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