Histone H2B (1-123 aa), Xenopus recombinant | 7669

H2A is a core component of nucleosome. A nucleosome is the basic repeating unit of chromatin in which 146 base pairs of DNA wrap twice around an octamer of histones. The octamer is composed of two of each histone H2A, H2B, H3, and H4. DNA accessibility is regulated via a complex set of post-translational modifications of these histones, also called histone code, and nucleosome remodeling. Histones H2A and H2B form a dimer. Histones H3 and H4 form a tetramer. The combination of two H2A/H2B dimers and one H3/H4 tetramer create the nucleosome core. Histone H2B undergoes many modifications which include acetylation, phosphorylation, ubiquitylation, sumoylation, and biotinylation that are important for regulation of gene transcription. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability.

7669 | Histone H2B 1-123 aa Xenopus recombinant DataSheet

Biomolecule/Target: Histone H2B

Synonyms: Histone H2B (1-123 aa), Xenopus recombinant

Alternates names: Inhibin beta-1, FRP, FSH-releasing protein

Taglines: Core component of nucleosome

NCBI Gene ID #: 3624

NCBI Gene Symbol: INHBA

Gene Source: Xenopus

Accession #: P08476

Recombinant: Yes

Source: E. coli

Purity by SDS-PAGEs: 95%

Assay: SDS-PAGE

Purity: N/A

Assay #2: HPLC

Endotoxin Level: N/A

Activity (Specifications/test method): N/A

Biological activity: The activity is determined by the ability to induce cytoxicity of MPC-11 cells and is typically less than 2 ng/mL.

Results: < 2 ng/mL

Binding Capacity: N/A

Unit Definition: N/A

Molecular Weight: 26.2 kDa

Concentration: N/A

Appearance: Lyophilized powder

Physical form description: Lyophilized powder. Recommended buffer is 50 mM sodium phosphate, pH 7.2, containing 300 mM sodium chloride, 1 mM DTT, 1 mM EDTA and 20% glycerol.

Reconstitution Instructions: Centrifuge vial before opening. When reconstituting the product, gently pipet and wash down the sides of the vial to ensure full recovery of the protein into solution. It is recommended to reconstitute the lyophilized product with sterile water, which can then be further diluted to other aqueous solutions.

Amino acid sequence: MGLECDGKVN ICCKKQFFVS FKDIGWNDWI IAPSGYHANY CEGECPSHIA GTSGSSLSFH STVINHYRMR GHSPFANLKS CCVPTKLRPM SMLYYDDGQN IIKKDIQNMI VEECGCS