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Science 24 March 1989:
Vol. 243. no. 4898, pp. 1576 - 1583
DOI: 10.1126/science.2538923

Articles

Science, Vol 243, Issue 4898, 1576-1583
Copyright © 1989 by American Association for the Advancement of Science


articles

A multiubiquitin chain is confined to specific lysine in a targeted short-lived protein

V Chau, JW Tobias, A Bachmair, D Marriott, DJ Ecker, DK Gonda, and A Varshavsky

Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI 48201.

The ubiquitin-dependent degradation of a test protein beta-galactosidase (beta gal) is preceded by ubiquitination of beta gal. The many (from 1 to more than 20) ubiquitin moieties attached to a molecule of beta gal occur as an ordered chain of branched ubiquitin-ubiquitin conjugates in which the carboxyl-terminal Gly76 of one ubiquitin is jointed to the internal Lys48 of an adjacent ubiquitin. This multiubiquitin chain is linked to one of two specific Lys residues in beta gal. These same Lys residues have been identified by molecular genetic analysis as components of the aminoterminal degradation signal in beta gal. The experiments with ubiquitin mutated at its Lys48 residue indicate that the multiubiquitin chain in a targeted protein is essential for the degradation of the protein.


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Mol. Cell. Biol. 21, 8007-8021
   Abstract »    Full Text »    PDF »
Kinetic Analysis of the Conjugation of Ubiquitin to Picornavirus 3C Proteases Catalyzed by the Mammalian Ubiquitin-protein Ligase E3alpha.
T. G. Lawson, M. E. Sweep, P. E. Schlax, R. N. Bohnsack, and A. L. Haas (2001)
J. Biol. Chem. 276, 39629-39637
   Abstract »    Full Text »    PDF »
N-end Rule Specificity within the Ubiquitin/Proteasome Pathway Is Not an Affinity Effect.
O. V. Baboshina, R. Crinelli, T. J. Siepmann, and A. L. Haas (2001)
J. Biol. Chem. 276, 39428-39437
   Abstract »    Full Text »    PDF »
Rapid Degradation of Auxin/Indoleacetic Acid Proteins Requires Conserved Amino Acids of Domain II and Is Proteasome Dependent.
J. A. Ramos, N. Zenser, O. Leyser, and J. Callis (2001)
PLANT CELL 13, 2349-2360
   Abstract »    Full Text »    PDF »
In Vivo Action of the HRD Ubiquitin Ligase Complex: Mechanisms of Endoplasmic Reticulum Quality Control and Sterol Regulation.
R. G. Gardner, A. G. Shearer, and R. Y. Hampton (2001)
Mol. Cell. Biol. 21, 4276-4291
   Abstract »    Full Text »    PDF »
RPN4 is a ligand, substrate, and transcriptional regulator of the 26S proteasome: A negative feedback circuit.
Y. Xie and A. Varshavsky (2001)
PNAS 98, 3056-3061
   Abstract »    Full Text »    PDF »
Alteration of the stability of Bag-1 protein in the control of olfactory neuronal apoptosis.
T Sourisseau, C Desbois, L Debure, D. Bowtell, A. Cato, J Schneikert, E Moyse, and D Michel (2001)
J. Cell Sci. 114, 1409-1416
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Detecting and Measuring Cotranslational Protein Degradation in.
G. Turner and Varshavsky (2000)
Science 289, 2117-2120
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Altered Activity, Social Behavior, and Spatial Memory in Mice Lacking the NTAN1p Amidase and the Asparagine Branch of the N-End Rule Pathway.
Y. T. Kwon, S. A. Balogh, I. V. Davydov, A. S. Kashina, J. K. Yoon, Y. Xie, A. Gaur, L. Hyde, V. H. Denenberg, and A. Varshavsky (2000)
Mol. Cell. Biol. 20, 4135-4148
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c-Kit triggers dual phosphorylations, which couple activation and degradation of the essential melanocyte factor Mi.
M. Wu, T. J. Hemesath, C. M. Takemoto, M. A. Horstmann, A. G. Wells, E. R. Price, D. Z. Fisher, and D. E. Fisher (2000)
Genes & Dev. 14, 301-312
   Abstract »    Full Text »
The Role of Multiubiquitination in Dislocation and Degradation of the alpha Subunit of the T Cell Antigen Receptor.
H. Yu and R. R. Kopito (1999)
J. Biol. Chem. 274, 36852-36858
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Degradation of the Basic Helix-Loop-Helix/Per-ARNT-Sim Homology Domain Dioxin Receptor Via the Ubiquitin/Proteasome Pathway.
B. J. Roberts and M. L. Whitelaw (1999)
J. Biol. Chem. 274, 36351-36356
   Abstract »    Full Text »    PDF »



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