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Note: Application as IHC, only suitable for histochemical staining or fluorescence staining of paraffin-embedded sections. Application as ICC/IF, suitable for histochemical or fluorescent staining of frozen sections, as well as chemical and fluorescent staining at the cellular level.
注意：抗体应用为IHC的，抗体只适合于石蜡切片的组化染色或者荧光染色。
抗体应用为IF/ICC的，抗体适合于冰冻切片的组化染色或者荧光染色，以及细胞水平的化学染色和荧光染色。
ABMART实验方案下载
Centromere protein A, also known as CENPA, is a protein which in humans is encoded by the CENPA gene. CENPA is a histone H3 variant which is the critical factor determining the kinetochore position(s) on each chromosome in most eukaryotes including humans. CENPA is a protein which epigenetically defines the position of the centromere on each chromosome, determining the position of kinetochore assembly and the final site of sister chromatid cohesion during mitosis. The CENPA protein is a histone H3 variant which replaces one or both canonical H3 histones in a subset of nucleosomes within centromeric chromatin. CENPA has the greatest sequence divergence of the histone H3 variants, with just 48% similarity to canonical histone H3, and has a highly diverged N-terminal tail that lacks many well characterised histone modification sites including H3K4, H3K9 and H3K27. Unusually for a histone, CENPA nucleosomes are not loaded together with DNA replication and are loaded at different cell cycle stages in different organisms: G1 phase in human, M phase in drosophila, G2 in S. pombe. To orchestrate this specialised loading there are CENPA-specific histone chaperones: HJURP in human, CAL1 in drosophila and Scm3 in S. pombe. In most eukaryotes CENPA is loaded into large domains of highly repetitive satellite DNA. The position of CENPA within satellite DNA are heritable at the protein level through a purely epigenetic mechanism. This means that the position of CENPA protein binding to the genome is copied upon cell division to the two daughter cells independent of the underlying DNA sequence. Under circumstances in which CENPA is lost from a chromosome a fail-safe mechanism has been described in human cells in which CENPB recruits CENPA via a satellite DNA binding domain to repopulate the centromere with CENPA nucleosomes. CENPA interacts directly with the inner kinetochore through proteins including CENPC and CENPN. Through this interaction the microtubules are able to accurately segregate chromosomes during mitosis.
Histone H3-like centromeric protein A (Centromere autoantigen A) (Centromere protein A) (CENP-A) CENPA
Human
WB,IF,ICC
WB 1:1000IF 1:100-1:400ICC 1:100
Predicted band size: 16 kDa
CENPA
p49450
Rabbit
Monoclonal
Rabbit IgG
Nucleus localization
Hela cell lysate, A375 cell lysate, HeLa.
Protein A affinity purified.
PBS (pH7.4), 0.1% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.
Store at +4℃ after thawing. For long-term storage, please store it at -20℃. Avoid repeated freeze / thaw cycles.
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