NPM1
Sign in to saveAlso known as B23, NPM, nucleophosmin (nucleolar phosphoprotein B23, numatrin), nucleophosmin, nucleophosmin 1
Nucleophosmin (NPM), also known as nucleolar phosphoprotein B23 or numatrin, is a protein that in humans is encoded by the NPM1 gene.
Gene data
NPM1- Name
- nucleophosmin 1
- Type
- protein-coding
- Position
- 171,387,086–171,411,810 (+)
- Aliases
- B23, NPM
- Ensembl
- ENSG00000181163
- RefSeq RNA
- NM_001037738.3, NM_001355006.2, NM_001355007.2, NM_001355009.2, NM_001355010.2
- RefSeq protein
- NP_001032827.1, NP_001341935.1, NP_001341936.1, NP_001341938.1, NP_001341939.1
The protein encoded by this gene is involved in several cellular processes, including centrosome duplication, protein chaperoning, and cell proliferation. The encoded phosphoprotein shuttles between the nucleolus, nucleus, and cytoplasm, chaperoning ribosomal proteins and core histones from the nucleus to the cytoplasm. This protein is also known to sequester the tumor suppressor ARF in the nucleolus, protecting it from degradation until it is needed. Mutations in this gene are associated with acute myeloid leukemia. Dozens of pseudogenes of this gene have been identified. [provided by RefSeq, Aug 2017].
Gene Ontology
Biological process
Molecular function
Pathways
via MyGene.info
Wikidata facts
- Image
- Protein NPM1 PDB 2p1b.png
Show 5 more facts
- HomoloGene ID
- 81697
- exact match
- identifiers.org/ncbigene/4869
- genomic end
- 171411810
- genomic start
- 170814120
- cytogenetic location
- 5q35.1
via Wikidata · CC0
~15 min read
Article
11 sectionsContents
- Discovery
- Gene
- Structure
- Function
- Molecular and histone chaperone
- Ribosome biogenesis
- Role in transcriptional regulation
- Clinical significance
- Interactions
- References
- Further reading
Nucleophosmin (NPM), also known as nucleolar phosphoprotein B23 or numatrin, is a protein that in humans is encoded by the NPM1 gene.
== Discovery == NPM1 was first discovered as a nucleolar phosphoprotein in rat liver cells and Novikoff hepatoma ascites cells. It was named B23 as it was the 23rd spot in the B section of the 2-D gel where spots were numbered in the order of decreasing mobility. It was named numatrin independently by another group as it was found to be tightly associated with the nuclear matrix and its expression was induced upon mitogenic signals in human B lymphocytes. At around the same time, the Xenopus NO38 was discovered and was found to be homologous to Xenopus Nucleoplasmin and rat B23.