Nucleolin

Last updated
NCL
Protein NCL PDB 2fc8.png
Available structures
PDB Ortholog search: PDBe RCSB
Identifiers
Aliases NCL , C23, nucleolin, Nsr1
External IDs OMIM: 164035 MGI: 97286 HomoloGene: 136488 GeneCards: NCL
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_005381

NM_010880

RefSeq (protein)

NP_005372

NP_035010

Location (UCSC) Chr 2: 231.45 – 231.48 Mb Chr 1: 86.27 – 86.29 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Nucleolin is a protein that in humans is encoded by the NCL gene. [5] [6]

Contents

Gene

The human NCL gene is located on chromosome 2 and consists of 14 exons with 13 introns and spans approximately 11kb. Intron 11 of the NCL gene encodes a small nucleolar RNA, termed U20. [7]

Function

Nucleolin is the major nucleolar protein of growing eukaryotic cells. It is found associated with intranucleolar chromatin and pre-ribosomal particles. It induces chromatin decondensation by binding to histone H1. It is thought to play a role in pre-rRNA transcription and ribosome assembly. May play a role in the process of transcriptional elongation. Binds RNA oligonucleotides with 5'-UUAGGG-3' repeats more tightly than the telomeric single-stranded DNA 5'-TTAGGG-3' repeats.

Nucleolin is also able to act as a transcriptional coactivator with Chicken Ovalbumin Upstream Promoter Transcription Factor II (COUP-TFII). [8]

Clinical significance

Midkine and pleiotrophin bind to cell-surface nucleolin as a low affinity receptor. This binding can inhibit HIV infection. [9] [10]

Nucleolin at the cell surface is the receptor for the respiratory syncytial virus (RSV) fusion protein. [11] Interference with the nucleolinRSV fusion protein interaction has been shown to be therapeutic against RSV infection in cell cultures and animal models. [12] [13] [14] [15]

Interactions

Nucleolin has been shown to interact with:

Related Research Articles

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References

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Further reading