Histone H4 (1-21) R3Me1

Rif. 3D-CRB1000403

Informazioni sul prodotto

• Nome: Histone H4 (1-21) R3Me1
• Sinonimi: H-SG(R/Me)GKGGKGLGKGGAKRHRKV-OH
• Marchio: Biosynth
• Descrizione: Histone 4 (H4) is one of the four core histones (H2A, H2B, H3 and H4) which are fundamental in compacting eukaryotic DNA into the nucleosome. Due to the high lysine and arginine content, histones have a net positive charge and therefore electrostatically interact with negatively charged DNA. The nucleosome arises when 147 base pairs of DNA wrap around a H3-H4 tetramer and two H2A-H2B dimers, forming the histone octamer core. Like other core histones, H4 has a globular domain and a flexible N-terminal domain, the histone tail, which can undergo modifications such as acetylation, methylation, phosphorylation and ubiquitination.Gene transcriptional activation or inactivation is controlled by ATP-dependent chromatin remodelling factors and histone modifying enzymes. Both processes function to alter the positioning of the nucleosome, allowing the DNA within to be either accessible to the transcription machinery or inaccessible. H4's lysine rich tail plays a role in the higher order chromatin folding.Modifications allow histones to contribute to gene regulation, chromosome condensation and DNA repair. In yeast, methylation of R3 of Histone 4 results in the recruitment of histone acetyl transferase to the chromatin and the acetylation of Histone 4 K5.

Proprietà chimiche

• Peso molecolare: 2,105.3 g/mol