Histone H3 Protein, Human

Histone H3 proteins are critical in nucleosomes, which compact DNA into chromatin and regulate DNA accessibility. Histone H3 Protein, Human is the recombinant human-derived Histone H3 protein, expressed by E. coli , with tag free.

Histone H3, a fundamental component of the nucleosome, serves as a linchpin in the intricate process of wrapping and compacting DNA into chromatin, which in turn restricts DNA accessibility to cellular machineries requiring DNA as a template. This histone, alongside its counterparts, assumes a pivotal role in pivotal cellular functions, including transcription regulation, DNA repair, DNA replication, and the maintenance of chromosomal stability. The regulation of DNA accessibility involves a sophisticated interplay of post-translational modifications collectively referred to as the histone code, coupled with the dynamic remodeling of nucleosomes. The nucleosome itself comprises a histone octamer, composed of two molecules each of H2A, H2B, H3, and H4, assembled in one H3-H4 heterotetramer and two H2A-H2B heterodimers. This octamer efficiently wraps approximately 147 base pairs of DNA, exemplifying its indispensable role in organizing chromatin structure and facilitating crucial genomic processes. Additionally, Histone H3 interacts with various cellular components such as TONSL, CHAF1A, CHAF1B, MCM2, and DNAJC9, further contributing to its multifaceted functions.

Human

E. coli

Tag Free

P68431 (A2-A136)

8350  [NCBI]

Full Length of Mature Protein

ARTKQTARKSTGGKAPRKQLATKAARKSAPATGGVKKPHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEACEAYLVGLFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA

Approximately 15.3 kDa

≥ 95%, as determined by reducing SDS-PAGE.

Lyophilized powder.

Lyophilized from a 0.22 μm filtered solution of ddH₂O, pH 7.0.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US;may vary elsewhere.