Hepatitis B Virus HBx Peptide 116-138 and Proteasome Activator PA28 Compete for Binding to the Proteasome α4/MC6 Subunit

Verfasser / Beitragende:
[R. Stohwasser, H.-G. Holzhütter, U. Lehmann, P. Henklein, P.-M. Kloetzel]
Ort, Verlag, Jahr:
2003
Enthalten in:
Biological Chemistry, 384/1(2003-01-27), 39-49
Format:
Artikel (online)
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245 0 0 |a Hepatitis B Virus HBx Peptide 116-138 and Proteasome Activator PA28 Compete for Binding to the Proteasome α4/MC6 Subunit  |h [Elektronische Daten]  |c [R. Stohwasser, H.-G. Holzhütter, U. Lehmann, P. Henklein, P.-M. Kloetzel] 
520 3 |a PA28 is a modulator of the 20S proteasome. The PA28 binding sites on the 20S proteasome are still not well defined. Using yeast two-hybrid interaction assays and proteasome inactivation kinetics we provide evidence that the proteasome α4 subunit is one of the PA28 binding sites. This finding is supported by the observation that a hepatitis Bvirus X protein-derived polypeptide habouring the α4 proteasome subunit binding motif impairs the activation of 20S proteasomes by PA28. 
540 |a Copyright © 2003 by Walter de Gruyter GmbH & Co. KG 
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