Protein
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] 
Clinical significance [ edit ] 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] [ 12] [ 13] [ 14] [ 15] 
Nucleolin has been shown to interact  with:
MTDH ,[ 16] CSNK2A2 ,[ 17] Centaurin, alpha 1 ,[ 18] HuR ,[ 19] NPM1 ,[ 20] P53 ,[ 21] PPP1CB ,[ 22] S100A11 ,[ 23] Sjögren syndrome antigen B ,[ 24] TOP1 ,[ 25] [ 26] Telomerase reverse transcriptase .[ 27]  
^ a b c   GRCh38: Ensembl release 89: ENSG00000115053  – Ensembl , May 2017^ a b c   GRCm38: Ensembl release 89: ENSMUSG00000026234  – Ensembl , May 2017^ "Human PubMed Reference:" . National Center for Biotechnology Information, U.S. National Library of Medicine .^ "Mouse PubMed Reference:" . National Center for Biotechnology Information, U.S. National Library of Medicine .^ Srivastava M, McBride OW, Fleming PJ, Pollard HB, Burns AL (Sep 1990). "Genomic organization and chromosomal localization of the human nucleolin gene" . The Journal of Biological Chemistry . 265  (25): 14922– 31. doi :10.1016/S0021-9258(18)77205-0 PMID  2394707 . ^ Erard MS, Belenguer P, Caizergues-Ferrer M, Pantaloni A, Amalric F (Aug 1988). "A major nucleolar protein, nucleolin, induces chromatin decondensation by binding to histone H1" . European Journal of Biochemistry . 175  (3): 525– 30. doi :10.1111/j.1432-1033.1988.tb14224.x PMID  3409881 . ^ "Entrez Gene: NCL nucleolin" .^ Litchfield LM, Riggs KA, Hockenberry AM, Oliver LD, Barnhart KG, Cai J, Pierce WM, Ivanova MM, Bates PJ, Appana SN, Datta S, Kulesza P, McBryan J, Young LS, Klinge CM (May 2012). "Identification and characterization of nucleolin as a COUP-TFII coactivator of retinoic acid receptor β transcription in breast cancer cells" . PLOS ONE . 7  (5) e38278. Bibcode :2012PLoSO...738278L . doi :10.1371/journal.pone.0038278 PMC  3365040 PMID  22693611 . ^ Said EA, Krust B, Nisole S, Svab J, Briand JP, Hovanessian AG (Oct 2002). "The anti-HIV cytokine midkine binds the cell surface-expressed nucleolin as a low affinity receptor" . The Journal of Biological Chemistry . 277  (40): 37492– 502. doi :10.1074/jbc.M201194200 PMID  12147681 . S2CID  41621217 . ^ Said EA, Courty J, Svab J, Delbé J, Krust B, Hovanessian AG (Sep 2005). "Pleiotrophin inhibits HIV infection by binding the cell surface-expressed nucleolin" . The FEBS Journal . 272  (18): 4646– 59. doi :10.1111/j.1742-4658.2005.04870.x PMID  16156786 . S2CID  21153881 . ^ Tayyari F, Marchant D, Moraes TJ, Duan W, Mastrangelo P, Hegele RG (Sep 2011). "Identification of nucleolin as a cellular receptor for human respiratory syncytial virus". Nature Medicine . 17  (9): 1132– 5. doi :10.1038/nm.2444 . PMID  21841784 . S2CID  205388029 . ^ Bilawchuk LM, Griffiths CD, Jensen LD, Elawar F, Marchant DJ (Aug 2017). "The Susceptibilities of Respiratory Syncytial Virus to Nucleolin Receptor Blocking and Antibody Neutralization are Dependent upon the Method of Virus Purification" . Viruses . 9  (8): 207. doi :10.3390/v9080207 PMC  5580464 PMID  28771197 . ^ Mastrangelo P, Hegele RG (Nov 2012). "The RSV fusion receptor: not what everyone expected it to be". Microbes and Infection / Institut Pasteur . 14  (13): 1205– 10. doi :10.1016/j.micinf.2012.07.015 . PMID  22884716 . ^ Mastrangelo P, Hegele RG (Mar 2013). "RSV fusion: time for a new model" . Viruses . 5  (3): 873– 85. doi :10.3390/v5030873 PMC  3705301 PMID  23518574 . ^ Shakeri A, Mastrangelo P, Griffin JK, Moraes TJ, Hegele RG (Nov 2014). "Respiratory syncytial virus receptor expression in the mouse and viral tropism". Histology and Histopathology . 30  (30): 401– 411. doi :10.14670/HH-30.401 . PMID  25374027 . ^ Lee, Seong-Jae, et al. (Jun 2021). "Identification of Nucleolin as a Novel AEG-1-Interacting Protein in Breast Cancer via Interactome Profiling" . Cancers . 13  (11): 2842. doi :10.3390/cancers13112842 PMC  8201222 PMID  34200450 . S2CID  235436955 . ^ Li D, Dobrowolska G, Krebs EG (Jun 1996). "The physical association of casein kinase 2 with nucleolin" . The Journal of Biological Chemistry . 271  (26): 15662– 8. doi :10.1074/jbc.271.26.15662 PMID  8663258 . S2CID  10750338 . ^ Dubois T, Zemlickova E, Howell S, Aitken A (Feb 2003). "Centaurin-alpha 1 associates in vitro and in vivo with nucleolin". Biochemical and Biophysical Research Communications . 301  (2): 502– 8. doi :10.1016/s0006-291x(02)03010-3 . PMID  12565890 . ^ Tominaga K, Srikantan S, Lee EK, Subaran SS, Martindale JL, Abdelmohsen K, Gorospe M (Oct 2011). "Competitive regulation of nucleolin expression by HuR and miR-494" . Molecular and Cellular Biology . 31  (20): 4219– 31. doi :10.1128/MCB.05955-11 . PMC  3187287 PMID  21859890 . ^ Li YP, Busch RK, Valdez BC, Busch H (Apr 1996). "C23 interacts with B23, a putative nucleolar-localization-signal-binding protein" . European Journal of Biochemistry . 237  (1): 153– 8. doi :10.1111/j.1432-1033.1996.0153n.x PMID  8620867 . ^ Daniely Y, Dimitrova DD, Borowiec JA (Aug 2002). "Stress-dependent nucleolin mobilization mediated by p53-nucleolin complex formation" . Molecular and Cellular Biology . 22  (16): 6014– 22. doi :10.1128/mcb.22.16.6014-6022.2002 . PMC  133981 PMID  12138209 . ^ Morimoto H, Okamura H, Haneji T (Sep 2002). "Interaction of protein phosphatase 1 delta with nucleolin in human osteoblastic cells" . The Journal of Histochemistry and Cytochemistry . 50  (9): 1187– 93. doi :10.1177/002215540205000905 PMID  12185196 . S2CID  24950287 . ^ Sakaguchi M, Miyazaki M, Takaishi M, Sakaguchi Y, Makino E, Kataoka N, Yamada H, Namba M, Huh NH (Nov 2003). "S100C/A11 is a key mediator of Ca(2+)-induced growth inhibition of human epidermal keratinocytes" . The Journal of Cell Biology . 163  (4): 825– 35. doi :10.1083/jcb.200304017 . PMC  2173690 PMID  14623863 . ^ Fouraux MA, Bouvet P, Verkaart S, van Venrooij WJ, Pruijn GJ (Jul 2002). "Nucleolin associates with a subset of the human Ro ribonucleoprotein complexes". Journal of Molecular Biology . 320  (3): 475– 88. doi :10.1016/s0022-2836(02)00518-1 . hdl :2066/121576 PMID  12096904 . ^ Haluska P, Saleem A, Edwards TK, Rubin EH (Apr 1998). "Interaction between the N-terminus of human topoisomerase I and SV40 large T antigen" . Nucleic Acids Research . 26  (7): 1841– 7. doi :10.1093/nar/26.7.1841 . PMC  147454 PMID  9512561 . ^ Bharti AK, Olson MO, Kufe DW, Rubin EH (Jan 1996). "Identification of a nucleolin binding site in human topoisomerase I" . The Journal of Biological Chemistry . 271  (4): 1993– 7. doi :10.1074/jbc.271.4.1993 PMID  8567649 . S2CID  25059254 . ^ Khurts S, Masutomi K, Delgermaa L, Arai K, Oishi N, Mizuno H, Hayashi N, Hahn WC, Murakami S (Dec 2004). "Nucleolin interacts with telomerase" . The Journal of Biological Chemistry . 279  (49): 51508– 15. doi :10.1074/jbc.M407643200 hdl :2297/15897 PMID  15371412 . S2CID  41394148 .   
Tuteja R, Tuteja N (1999). "Nucleolin: a multifunctional major nucleolar phosphoprotein". Critical Reviews in Biochemistry and Molecular Biology . 33  (6): 407– 36. doi :10.1080/10409239891204260 . PMID  9918513 . Pasternack MS, Bleier KJ, McInerney TN (Aug 1991). "Granzyme A binding to target cell proteins. Granzyme A binds to and cleaves nucleolin in vitro" . The Journal of Biological Chemistry . 266  (22): 14703– 8. doi :10.1016/S0021-9258(18)98743-0 PMID  1860869 . Belenguer P, Caizergues-Ferrer M, Labbé JC, Dorée M, Amalric F (Jul 1990). "Mitosis-specific phosphorylation of nucleolin by p34cdc2 protein kinase" . Molecular and Cellular Biology . 10  (7): 3607– 18. doi :10.1128/MCB.10.7.3607 . PMC  360797 PMID  2192260 . Srivastava M, Fleming PJ, Pollard HB, Burns AL (Jun 1989). "Cloning and sequencing of the human nucleolin cDNA" . FEBS Letters . 250  (1): 99– 105. doi :10.1016/0014-5793(89)80692-1 PMID  2737305 . S2CID  8690886 . Tuteja N, Huang NW, Skopac D, Tuteja R, Hrvatic S, Zhang J, Pongor S, Joseph G, Faucher C, Amalric F (Jul 1995). "Human DNA helicase IV is nucleolin, an RNA helicase modulated by phosphorylation". Gene . 160  (2): 143– 8. doi :10.1016/0378-1119(95)00207-M . PMID  7642087 . Jordan P, Heid H, Kinzel V, Kübler D (Dec 1994). "Major cell surface-located protein substrates of an ecto-protein kinase are homologs of known nuclear proteins". Biochemistry . 33  (49): 14696– 706. doi :10.1021/bi00253a007 . PMID  7993898 . Nicoloso M, Caizergues-Ferrer M, Michot B, Azum MC, Bachellerie JP (Sep 1994). "U20, a novel small nucleolar RNA, is encoded in an intron of the nucleolin gene in mammals" . Molecular and Cellular Biology . 14  (9): 5766– 76. doi :10.1128/mcb.14.9.5766 . PMC  359102 PMID  8065311 . Ishikawa F, Matunis MJ, Dreyfuss G, Cech TR (Jul 1993). "Nuclear proteins that bind the pre-mRNA 3' splice site sequence r(UUAG/G) and the human telomeric DNA sequence d(TTAGGG)n" . Molecular and Cellular Biology . 13  (7): 4301– 10. doi :10.1128/MCB.13.7.4301 . PMC  359985 PMID  8321232 . Eggert M, Möws CC, Tripier D, Arnold R, Michel J, Nickel J, Schmidt S, Beato M, Renkawitz R (Dec 1995). "A fraction enriched in a novel glucocorticoid receptor-interacting protein stimulates receptor-dependent transcription in vitro" . The Journal of Biological Chemistry . 270  (51): 30755– 9. doi :10.1074/jbc.270.51.30755 PMID  8530516 . S2CID  25642912 . Bharti AK, Olson MO, Kufe DW, Rubin EH (Jan 1996). "Identification of a nucleolin binding site in human topoisomerase I" . The Journal of Biological Chemistry . 271  (4): 1993– 7. doi :10.1074/jbc.271.4.1993 PMID  8567649 . S2CID  25059254 . Li YP, Busch RK, Valdez BC, Busch H (Apr 1996). "C23 interacts with B23, a putative nucleolar-localization-signal-binding protein" . European Journal of Biochemistry . 237  (1): 153– 8. doi :10.1111/j.1432-1033.1996.0153n.x PMID  8620867 . Li D, Dobrowolska G, Krebs EG (Jun 1996). "The physical association of casein kinase 2 with nucleolin" . The Journal of Biological Chemistry . 271  (26): 15662– 8. doi :10.1074/jbc.271.26.15662 PMID  8663258 . S2CID  10750338 . Zhou G, Seibenhener ML, Wooten MW (Dec 1997). "Nucleolin is a protein kinase C-zeta substrate. Connection between cell surface signaling and nucleus in PC12 cells" . The Journal of Biological Chemistry . 272  (49): 31130– 7. doi :10.1074/jbc.272.49.31130 PMID  9388266 . Haluska P, Saleem A, Edwards TK, Rubin EH (Apr 1998). "Interaction between the N-terminus of human topoisomerase I and SV40 large T antigen" . Nucleic Acids Research . 26  (7): 1841– 7. doi :10.1093/nar/26.7.1841 . PMC  147454 PMID  9512561 . Borggrefe T, Wabl M, Akhmedov AT, Jessberger R (Jul 1998). "A B-cell-specific DNA recombination complex" . The Journal of Biological Chemistry . 273  (27): 17025– 35. doi :10.1074/jbc.273.27.17025 PMID  9642267 . S2CID  24347735 . Larrucea S, González-Rubio C, Cambronero R, Ballou B, Bonay P, López-Granados E, Bouvet P, Fontán G, Fresno M, López-Trascasa M (Nov 1998). "Cellular adhesion mediated by factor J, a complement inhibitor. Evidence for nucleolin involvement" . The Journal of Biological Chemistry . 273  (48): 31718– 25. doi :10.1074/jbc.273.48.31718 PMID  9822633 . S2CID  8004314 . Parada CA, Roeder RG (Jul 1999). "A novel RNA polymerase II-containing complex potentiates Tat-enhanced HIV-1 transcription" . The EMBO Journal . 18  (13): 3688– 701. doi :10.1093/emboj/18.13.3688 . PMC  1171446 PMID  10393184 .