Anti-CENP-A Antibody (Clone 5A7-2E11)

Synthetic peptide corresponding to a sequence within human CENP-A.

Phosphate-buffered saline (PBS), pH 7.4, containing 50% glycerol and 0.09% sodium azide.

Liquid

Purified by Protein G affinity chromatography

This antibody is stable for at least one (1) year at -20°C. Avoid repeated freeze-thaw cycles.

Research Use Only

Next Day 2-8°C

This antibody recognizes human CENP-A. Reactivity with other species has not been investigated.

Replicated chromosomes include two kinetochores that control chromosome segregation during mitosis. Centromere Protein-A (CENP-A), a histone H3-like protein, contains a C-terminal H3-like domain which is required for centromere localization of CENP-A. It is essential for kinetochore targeting of CENP-C. In the presence of DNA, CENP-A forms an octameric complex with histones H2A, H2B, and H4. CENP-A specifically localizes to active centromeres and is a component of specialized centromeric nucleosomes on which kinetochores are assembled. CENP-A is essential for nucleosomal packaging of centromeric DNA at interphase and functions as a centromere formation marker on chromosomes.

Histone H3-like nucleosomal protein that is specifically found in centromeric nucleosomes (PubMed:7962047, PubMed:9024683, PubMed:11756469, PubMed:14667408, PubMed:15702419, PubMed:15475964, PubMed:15282608, PubMed:17651496, PubMed:19114591, PubMed:27499292, PubMed:20739937). Replaces conventional H3 in the nucleosome core of centromeric chromatin at the inner plate of the kinetochore (PubMed:18072184). The presence of CENPA subtly modifies the nucleosome structure and the way DNA is wrapped around the nucleosome and gives rise to protruding DNA ends that are less well-ordered and rigid compared to nucleosomes containing histone H3 (PubMed:27499292, PubMed:26878239). May serve as an epigenetic mark that propagates centromere identity through replication and cell division (PubMed:15475964, PubMed:15282608, PubMed:26878239, PubMed:20739937, PubMed:21478274). Required for recruitment and assembly of kinetochore proteins, and as a consequence required for progress through mitosis, chromosome segregation and cytokinesis (PubMed:11756469, PubMed:14667408, PubMed:18072184, PubMed:23818633, PubMed:25556658, PubMed:27499292). {PubMed:11756469, PubMed:14667408, PubMed:15282608, PubMed:15475964, PubMed:15702419, PubMed:17651496, PubMed:18072184, PubMed:19114591, PubMed:21478274, PubMed:23818633, PubMed:25556658, PubMed:26878239, PubMed:27499292, PubMed:7962047, PubMed:9024683, PubMed:20739937}.