|Calculated MW||32575 Da|
|Positive Control||Western Blot: Recombinant protein|
|Application & Usage||Western blot: 1-4 µg/ml.|
|Other Names||Nucleolar phosphoprotein B23, Nucleolar protein NO38, Numatrin, NPM, NPM1|
|Formulation||100 µg or 30 µg (0.5 mg/ml) of antibody in PBS pH 7.2 containing 0.01 % BSA, 0.01 % thimerosal, and 50 % glycerol.|
|Handling||The antibody solution should be gently mixed before use.|
|Reconstitution & Storage||-20 °C|
|Precautions||Nucleophosmin Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Function||Involved in diverse cellular processes such as ribosome biogenesis, centrosome duplication, protein chaperoning, histone assembly, cell proliferation, and regulation of tumor suppressors p53/TP53 and ARF. Binds ribosome presumably to drive ribosome nuclear export. Associated with nucleolar ribonucleoprotein structures and bind single-stranded nucleic acids. Acts as a chaperonin for the core histones H3, H2B and H4. Stimulates APEX1 endonuclease activity on apurinic/apyrimidinic (AP) double- stranded DNA but inhibits APEX1 endonuclease activity on AP single-stranded RNA. May exert a control of APEX1 endonuclease activity within nucleoli devoted to repair AP on rDNA and the removal of oxidized rRNA molecules. In concert with BRCA2, regulates centrosome duplication. Regulates centriole duplication: phosphorylation by PLK2 is able to trigger centriole replication. Negatively regulates the activation of EIF2AK2/PKR and suppresses apoptosis through inhibition of EIF2AK2/PKR autophosphorylation. Antagonizes the inhibitory effect of ATF5 on cell proliferation and relieves ATF5-induced G2/M blockade (PubMed:22528486).|
|Cellular Location||Nucleus, nucleolus. Nucleus, nucleoplasm. Cytoplasm, cytoskeleton, microtubule organizing center, centrosome Note=Generally nucleolar, but is translocated to the nucleoplasm in case of serum starvation or treatment with anticancer drugs Has been found in the cytoplasm in patients with primary acute myelogenous leukemia (AML), but not with secondary AML. Can shuttle between cytoplasm and nucleus. Co- localizes with the methylated form of RPS10 in the granular component (GC) region of the nucleolus. Colocalized with nucleolin and APEX1 in nucleoli Isoform 1 of NEK2 is required for its localization to the centrosome during mitosis|
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Nucleophosmin is a nucleus protein which belongs to the nucleoplasmin family. It is a nucleolar phosphoprotein that shuttles between the nucleus and cytoplasm during the cell cycle. Nucleophosmin / NPM1 is involved in diverse cellular processes such as ribosome biogenesis, centrosome duplication, protein chaperoning, histone assembly, cell proliferation, and regulation of tumor suppressors TP53 / p53 and ARF. Subcellular localization of Nucleophosmin / NPM1 appears to be strongly correlated with NPM1 functions and cell proliferation. It is phosphorylated mainly at its central acidic domain by several upstream kinases, and its phosphorylation appears to be involved in regulating its functions in ribosome biogenesis and centrosome duplication. Nucleophosmin / NPM1 binds ribosome presumably to drive ribosome nuclear export. It is associated with nucleolar ribonucleoprotein structures and bind single-stranded nucleic acids. Nucleophosmin / NPM1 acts as a chaperonin for the core histones H3, H2B and H4. Nucleophosmin / NPM1 may act as a licensing factor to maintain proper centrosome duplication and that the Ran/CRM1 nucleocytoplasmic complex regulates local trafficking of Nucleophosmin / NPM1 to centrosomes by interacting through its nuclear export sequence motif.
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