http://www.cnr.it/ontology/cnr/individuo/prodotto/ID252749

Biochemical characterization of p16(INK4)- and p18-containing complexes in human cell lines (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Biochemical characterization of p16(INK4)- and p18-containing complexes in human cell lines (Articolo in rivista) (literal)

Anno

1996-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1074/jbc.271.27.15942 (literal)

Alternative label

Della Ragione F., Russo G.L., Oliva A., Mercurio C., Mastropietro S., Della Pietra, V., Zappia, V. (1996)
Biochemical characterization of p16(INK4)- and p18-containing complexes in human cell lines
in The Journal of biological chemistry (Print); American society for biochemistry and molecular biology, Baltimore (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Della Ragione F., Russo G.L., Oliva A., Mercurio C., Mastropietro S., Della Pietra, V., Zappia, V. (literal)

Pagina inizio

15942 (literal)

Pagina fine

15949 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

cited By (since 1996)44 PDF scaricabile gratuitamente al sito: http://www.jbc.org/content/271/27/15942.short (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.scopus.com/inward/record.url?eid=2-s2.0-0029666266&partnerID=40&md5=2b73c904dd21685d6980b049ee08df63 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

271 (literal)

Rivista

?The ?Journal of biological chemistry (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

8 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

27 (literal)

Note

Scopu (literal)
PubMed (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

Inst. of Biochem. of Macromolecules, Medical School, Second University of Naples, Via Costantinopoli 16, 80138 Naples, Italy; Consiglio Nazionale delle Ricerche, Inst. of Food Science and Technology, Via Roma, 83100 Avellino, Italy; Ist. di Biochim. delle Macromolecole, Fac. di Medicina e Chirurgia, Seconda Università di Napoli, Via Costantinopoli 16, 80138 Napoli, Italy; Stazione Zoologica Anton Dohrn, Villa Comunale 1, 80121 Naples, Italy (literal)

Titolo

Biochemical characterization of p16(INK4)- and p18-containing complexes in human cell lines (literal)

Abstract

The regulation of the D-type cyclin-dependent kinase (CDK4 and CDK6) activity appears to be the key step in the progression of eukaryotic cells through the G 1 cell cycle phase. One of the mechanisms involved in this process is the binding of some small protein inhibitors, with a molecular mass ranging between 14 and 20 kDa, to these CDKs. We have evaluated the amount of two such inhibitors, namely p16(INK4) and p18, in normal and transformed cells, as well as the biochemical features of the macromolecular complexes containing these proteins. The results obtained indicated that (i) p18 gene expression, unlike p16(INK4) gene, is not regulated by pRb status, (ii) no evident relationship exists between the expression of p16(INK4) and p18 genes, (iii) significant amounts of the two proteins are not bound to CDKs but occur as free molecules, (iv) each inhibitor forms a complex with the CDK protein with a 1:1 stoichiometry, and (v) a competition exists between cyclin D and the inhibitor protein toward the CDK protein resulting in the absence of detectable cellular free kinase. Moreover, employing the human native partially purified p16(INK4) or the pure recombinant protein, we have been able to demonstrate in vitro the dissociation of CDK4-cyclin D1 complex and the formation of CDK4-p16(INK4) bimolecular complex. Our findings suggest that during the cell division cycle the members of the p16(INK4) protein family and cyclin Ds compete for binding to CDK4/CDK6 and that their quantitative ratio is essential for G 1 -> S transition. (literal)

Editore