Nucleosome,

Nucleosome, Recombinant Human, H3K4me3 dNuc, Biotinylated

$575.00
SKU: 16-0316
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  • Species:  Human
  • Source:  E. coli & synthetic DNA
  • Tag:  Biotinylated
  • MW:  199,848.1 Da

Description

Recombinant mononucleosomes (H3K4me3) consist of 147 base pairs of DNA wrapped around an octamer core of histone proteins (two each of H2A, H2B, H3.2, and H4) to form a nucleosome, the basic repeating unit of chromatin. The 147 bp 601 sequence, identified by Lowary and Widom [1], has high affinity for histone octamers and is useful for nucleosome assembly. H3K4me3 dNuc contains trimethyl-lysine at position 4 on histone H3.2. H3K4me3 has a Cys to Ala substitution at position 110. The DNA contains a 5’ biotin-TEG group.

Validation Data

Figure 1: Western blot data
Western Analysis of H3K4me3 dNuc. Top Panel: Unmodified (EpiCypher 16-0006; Lane 1) and H3K4me3 (Lane 2) nucleosomes were probed with an anti-H3K4me3 antibody and analyzed via ECL readout. Only the H3K4me3 sample produced a detectable signal. Bottom Panel: Detail from Coomassie stained gel showing unmodified (Lane 1) and H3K4me3 (Lane 2) nucleosomes.

Figure 2: Mass spec data
Synthetic H3K4me3 histone analyzed by high resolution mass spectrometry. Expected mass = 15,267.77 Da. Determined mass = 15,266.15 Da.

Figure 3: Protein gel data
Coomassie stained SDS-PAGE gel of proteins in H3K4me3 dNuc (1 µg) demonstrates the purity of histones in the preparation. Sizes of molecular weight markers and positions of the core histones (H2A, H2B, H3K4me3 and H4) are indicated.

Figure 4: DNA gel data
H3K4me3 dNuc resolved via native PAGE gel and stained with ethidium bromide to visualize DNA. Lane 1: Free DNA (EpiCypher 18-0005; 100 ng). Lane 2: Intact H3K4me3 nucleosomes (400 ng).

Technical Information

Storage
Stable for six months at -80°C from date of receipt. For best results, aliquot and avoid freeze/thaws
Formulation
10 mM Tris HCl pH 7.5, 25 mM NaCl, 1 mM EDTA, 2 mM DTT, 20% glycerol (27.3 µg protein, 50 µg DNA + protein)

Application Notes

H3K4me3 mononucleosome is highly purified and suitable for a variety of applications, including use as a substrate in enzyme assays, high-throughput screening and inhibitor testing, chromatin binding studies, protein-protein interaction assays, structural studies, and in effector protein binding experiments.

Gene & Protein Information

UniProt ID
H2A - P04908 (alt. names: H2A type 1-B/E, H2A.2, H2A/a, H2A/m)
H2B - O60814 (alt. names: H2B K, HIRA-interacting protein 1)
H3.2 - Q71DI3
H4 - P62805

References

Background References:
[1] Lowary and Widom J. Mol. Biol. (1998). PMID: 9514715

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