Specific proteolysis mediated by a p97-directed proteolysis-targeting chimera (PROTAC)

The p97 protein is a member of the AAA + family of ATPases. It is a mechanoenzyme that uses energy from ATP hydrolysis to promote protein unfolding and segregation actively. The unfolded products of p97 are presented to the 26S Proteasome for degradation. p97 substrate recognition is mediated by ada...

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Main Authors Salinas-Rebolledo, Constanza, Blesa, Javier, Valenzuela-Nieto, Guillermo, Schwefel, David, Natalia Lopez Gonzalez Del Rey, Mendez-Ruette, Maxs, Burkhalter, Janine, Batiz, Luis Federico, Jara, Ronald, Obeso, Jose A, Chana-Cuevas, Pedro, Sapkota, Gopal P, Rojas-Fernandez, Alejandro
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LanguageEnglish
Published Cold Spring Harbor Cold Spring Harbor Laboratory Press 09.03.2024
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Abstract The p97 protein is a member of the AAA + family of ATPases. It is a mechanoenzyme that uses energy from ATP hydrolysis to promote protein unfolding and segregation actively. The unfolded products of p97 are presented to the 26S Proteasome for degradation. p97 substrate recognition is mediated by adaptors, which interact with substrates directly or indirectly through ubiquitin modifications, resulting in substrate funnelling into the central pore of the p97 hexamer and unfolding. We have engineered synthetic adaptors to target specific substrates to p97, using the extraordinary intracellular binding capabilities of camelid nanobodies fused to the UBX domain of the p97 Adapter FAF1. In such a way, we created a p97-directed proteolysis-targeting chimera (PROTAC), representing a unique E3 ubiquitin ligase-independent strategy to promote specific proteolysis.Competing Interest StatementAlejandro Rojas-Fernandez and Constanza Salinas-Rebolledo are inventors of a patent request of the Austral university of Chile.
AbstractList The p97 protein is a member of the AAA + family of ATPases. It is a mechanoenzyme that uses energy from ATP hydrolysis to promote protein unfolding and segregation actively. The unfolded products of p97 are presented to the 26S Proteasome for degradation. p97 substrate recognition is mediated by adaptors, which interact with substrates directly or indirectly through ubiquitin modifications, resulting in substrate funnelling into the central pore of the p97 hexamer and unfolding. We have engineered synthetic adaptors to target specific substrates to p97, using the extraordinary intracellular binding capabilities of camelid nanobodies fused to the UBX domain of the p97 Adapter FAF1. In such a way, we created a p97-directed proteolysis-targeting chimera (PROTAC), representing a unique E3 ubiquitin ligase-independent strategy to promote specific proteolysis.Competing Interest StatementAlejandro Rojas-Fernandez and Constanza Salinas-Rebolledo are inventors of a patent request of the Austral university of Chile.
Author Salinas-Rebolledo, Constanza
Mendez-Ruette, Maxs
Rojas-Fernandez, Alejandro
Sapkota, Gopal P
Chana-Cuevas, Pedro
Burkhalter, Janine
Obeso, Jose A
Batiz, Luis Federico
Schwefel, David
Natalia Lopez Gonzalez Del Rey
Blesa, Javier
Valenzuela-Nieto, Guillermo
Jara, Ronald
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SubjectTerms Chimeras
Nanobodies
p97 Protein
Proteasome 26S
Proteasomes
Protein folding
Proteolysis
Ubiquitin-protein ligase
Title Specific proteolysis mediated by a p97-directed proteolysis-targeting chimera (PROTAC)
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