Anti-CENPA Antibody Picoband®

SKU: PB9538

Size: 100 μg

Storage: Store at -20℃ for one year from date of receipt. After reconstitution, at 4℃ for one month. It can also be aliquotted and stored frozen at -20℃ for six months. Avoid repeated freeze-thaw cycles.

Form: Lyophilized

Reactivity: Human,Rat

Applications: WB

Application Details: Western blot, 0.1-0.5μg/ml, Human, Rat

Gene Name: CENPA

Specificity: No cross reactivity with other proteins.

Background: Centromeres are the differentiated chromosomal domains that specify the mitotic behavior of chromosomes. CENPA encodes a centromere protein which contains a histone H3 related histone fold domain that is required for targeting to the centromere. And CENPA is proposed to be a component of a modified nucleosome or nucleosome-like structure in which it replaces 1 or both copies of conventional histone H3 in the (H3-H4)2 tetrameric core of the nucleosome particle. Alternative splicing results in multiple transcript variants encoding distinct isoforms. In higher eukaryotes, the recruitment of CENP-A nucleosomes to existing centromeres is an epigenetic process, independent of the underlying DNA sequence. In S.pombe, de novo recruitment of the CENP-A to the centromere is believed to be controlled by centromeric heterochromatin surrounding the centromere, and by an RNAi mechanism. The RNAi is cut to form siRNA; this complexes with the protein Chp1, which then binds the centromeric heterochromatin. This helps recruit other proteins, ultimately resulting in a protein complex that forms cohesin between two sister chromatids at the centromeric heterochromatin. This cohesin is believed to be essential in replacing the centromere H3 with CENP-A. CENP-A is one of the epigenetic changes that is believed to distinguish centromeric DNA from other DNA. Once the CENP-A has been added, the centromere becomes self-propagating, and the surrounding heterochromatin/RNAi mechanism is no longer necessary.

Immunogen: E.coli-derived human CENPA recombinant protein (Position: M1-G140). Human CENPA shares 71.6% amino acid (aa) sequence identity with mouse CENPA.

Clonality: Polyclonal

Contents: Each vial contains antibody formulated with stabilizing components, 0.9 mg NaCl, 0.2 mg Na2HPO4, and 0.05 mg NaN3.
*This antibody is supplied in a stabilized formulation.
Compatibility with conjugation reactions depends on the chemistry of the conjugation method used.
For conjugation methods that are not compatible with the stabilizing components present in this formulation, a carrier-free antibody format is required.

Purification: Immunogen affinity purified.

Reconstitution: Add 0.2ml of distilled water will yield a concentration of 500ug/ml.

Reference: 1. Chueh AC, Wong LH, Wong N, Choo KH (January 2005). Variable and hierarchical size distribution of L1-retroelement-enriched CENP-A clusters within a functional human neocentromere. Hum. Mol. Genet. 14 (1): 85–93. 2. Folco HD, Pidoux AL, Urano T, Allshire RC (January 2008). Heterochromatin and RNAi are required to establish CENP-A chromatin at centromeres. Science 319 (5859): 94–7.

Uniprot ID: P49450

Host: Rabbit

Concentration: Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.

Conjugate: This is the unconjugated antibody. It is also available with 10 conjugation options, including Biotin, Cy3, Fluoro488, Fluoro550, Fluoro594, FITC, HRP, APC, PE, and Fluoro647. A carrier-free (BSA-free) version is also available. Additional charges may apply for some options. Please contact us for a quote

Cross Reactivity: No cross-reactivity with other proteins

Isotype: Rabbit IgG

Phospho_site:

Clone Number:

Observed Molecular Weight: 16 kDa

Calculated Molecular Weight: 15991 MW

Gene ID: 1058

Protein Name: Histone H3-like centromeric protein A

Gene Full Name: centromere protein A

Synonyms: CENP A; CENPA; Centromere autoantigen A; centromere protein A