2FC8, 2FC9, 2KRR
4691
17975
ENSG00000115053
ENSMUSG00000026234
P19338
P09405
NM_005381
NM_010880
NP_005372
NP_035010
Nucleolin is a protein that in humans is encoded by the NCL gene.[5][6]
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]
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]
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 nucleolin–RSV fusion protein interaction has been shown to be therapeutic against RSV infection in cell cultures and animal models.[12][13][14][15]
Nucleolin has been shown to interact with: