Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics
- Autores
- Verzini, Silvia; Shah, Maliha; Theillet, Francois-Xavier; Belsom, Adam; Bieschke, Jan; Wanker, Erich E.; Rappsilber, Juri; Binolfi, Andrés; Selenko, Philipp
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Heterogeneous aggregates of the human protein α-synuclein (αSyn) are abundantly found in Lewy body inclusions of Parkinson's disease patients. While structural information on classical αSyn amyloid fibrils is available, little is known about the conformational properties of disease-relevant, non-canonical aggregates. Here, we analyze the structural and dynamic properties of megadalton-sized dityrosine adducts of αSyn that form in the presence of reactive oxygen species and cytochrome c, a proapoptotic peroxidase that is released from mitochondria during sustained oxidative stress. In contrast to canonical cross-β amyloids, these aggregates retain high degrees of internal dynamics, which enables their characterization by solution-state NMR spectroscopy. We find that intermolecular dityrosine crosslinks restrict αSyn motions only locally whereas large segments of concatenated molecules remain flexible and disordered. Indistinguishable aggregates form in crowded in vitro solutions and in complex environments of mammalian cell lysates, where relative amounts of free reactive oxygen species, rather than cytochrome c, are rate limiting. We further establish that dityrosine adducts inhibit classical amyloid formation by maintaining αSyn in its monomeric form and that they are non-cytotoxic despite retaining basic membrane-binding properties. Our results suggest that oxidative αSyn aggregation scavenges cytochrome c's activity into the formation of amorphous, high molecular-weight structures that may contribute to the structural diversity of Lewy body deposits.
Fil: Verzini, Silvia. Leibniz Institute Of Molecular Pharmacology; Alemania
Fil: Shah, Maliha. Max Delbrück Center For Molecular Medicine; Alemania
Fil: Theillet, Francois-Xavier. Leibniz Institute Of Molecular Pharmacology; Alemania
Fil: Belsom, Adam. Technische Universität Berlin,; Alemania
Fil: Bieschke, Jan. Max Delbrück Center For Molecular Medicine; Alemania
Fil: Wanker, Erich E.. Max Delbrück Center For Molecular Medicine; Alemania
Fil: Rappsilber, Juri. Technische Universität Berlin,; Alemania
Fil: Binolfi, Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Selenko, Philipp. Weizmann Institute Of Science.; Israel - Materia
-
AMYLOID PROTEINS
NEURODEGENERATIVE DISEASE
PROTEIN AGGREGATION
PROTEIN DYNAMICS
STRUCTURAL DISORDER - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/181646
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network_name_str |
CONICET Digital (CONICET) |
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Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamicsVerzini, SilviaShah, MalihaTheillet, Francois-XavierBelsom, AdamBieschke, JanWanker, Erich E.Rappsilber, JuriBinolfi, AndrésSelenko, PhilippAMYLOID PROTEINSNEURODEGENERATIVE DISEASEPROTEIN AGGREGATIONPROTEIN DYNAMICSSTRUCTURAL DISORDERhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Heterogeneous aggregates of the human protein α-synuclein (αSyn) are abundantly found in Lewy body inclusions of Parkinson's disease patients. While structural information on classical αSyn amyloid fibrils is available, little is known about the conformational properties of disease-relevant, non-canonical aggregates. Here, we analyze the structural and dynamic properties of megadalton-sized dityrosine adducts of αSyn that form in the presence of reactive oxygen species and cytochrome c, a proapoptotic peroxidase that is released from mitochondria during sustained oxidative stress. In contrast to canonical cross-β amyloids, these aggregates retain high degrees of internal dynamics, which enables their characterization by solution-state NMR spectroscopy. We find that intermolecular dityrosine crosslinks restrict αSyn motions only locally whereas large segments of concatenated molecules remain flexible and disordered. Indistinguishable aggregates form in crowded in vitro solutions and in complex environments of mammalian cell lysates, where relative amounts of free reactive oxygen species, rather than cytochrome c, are rate limiting. We further establish that dityrosine adducts inhibit classical amyloid formation by maintaining αSyn in its monomeric form and that they are non-cytotoxic despite retaining basic membrane-binding properties. Our results suggest that oxidative αSyn aggregation scavenges cytochrome c's activity into the formation of amorphous, high molecular-weight structures that may contribute to the structural diversity of Lewy body deposits.Fil: Verzini, Silvia. Leibniz Institute Of Molecular Pharmacology; AlemaniaFil: Shah, Maliha. Max Delbrück Center For Molecular Medicine; AlemaniaFil: Theillet, Francois-Xavier. Leibniz Institute Of Molecular Pharmacology; AlemaniaFil: Belsom, Adam. Technische Universität Berlin,; AlemaniaFil: Bieschke, Jan. Max Delbrück Center For Molecular Medicine; AlemaniaFil: Wanker, Erich E.. Max Delbrück Center For Molecular Medicine; AlemaniaFil: Rappsilber, Juri. Technische Universität Berlin,; AlemaniaFil: Binolfi, Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; ArgentinaFil: Selenko, Philipp. Weizmann Institute Of Science.; IsraelAcademic Press Ltd - Elsevier Science Ltd2020-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/181646Verzini, Silvia; Shah, Maliha; Theillet, Francois-Xavier; Belsom, Adam; Bieschke, Jan; et al.; Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics; Academic Press Ltd - Elsevier Science Ltd; Journal of Molecular Biology; 432; 24; 10-2020; 1-450022-2836CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmb.2020.10.023info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0022283620305982info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:50:41Zoai:ri.conicet.gov.ar:11336/181646instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:50:42.04CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics |
title |
Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics |
spellingShingle |
Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics Verzini, Silvia AMYLOID PROTEINS NEURODEGENERATIVE DISEASE PROTEIN AGGREGATION PROTEIN DYNAMICS STRUCTURAL DISORDER |
title_short |
Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics |
title_full |
Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics |
title_fullStr |
Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics |
title_full_unstemmed |
Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics |
title_sort |
Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics |
dc.creator.none.fl_str_mv |
Verzini, Silvia Shah, Maliha Theillet, Francois-Xavier Belsom, Adam Bieschke, Jan Wanker, Erich E. Rappsilber, Juri Binolfi, Andrés Selenko, Philipp |
author |
Verzini, Silvia |
author_facet |
Verzini, Silvia Shah, Maliha Theillet, Francois-Xavier Belsom, Adam Bieschke, Jan Wanker, Erich E. Rappsilber, Juri Binolfi, Andrés Selenko, Philipp |
author_role |
author |
author2 |
Shah, Maliha Theillet, Francois-Xavier Belsom, Adam Bieschke, Jan Wanker, Erich E. Rappsilber, Juri Binolfi, Andrés Selenko, Philipp |
author2_role |
author author author author author author author author |
dc.subject.none.fl_str_mv |
AMYLOID PROTEINS NEURODEGENERATIVE DISEASE PROTEIN AGGREGATION PROTEIN DYNAMICS STRUCTURAL DISORDER |
topic |
AMYLOID PROTEINS NEURODEGENERATIVE DISEASE PROTEIN AGGREGATION PROTEIN DYNAMICS STRUCTURAL DISORDER |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Heterogeneous aggregates of the human protein α-synuclein (αSyn) are abundantly found in Lewy body inclusions of Parkinson's disease patients. While structural information on classical αSyn amyloid fibrils is available, little is known about the conformational properties of disease-relevant, non-canonical aggregates. Here, we analyze the structural and dynamic properties of megadalton-sized dityrosine adducts of αSyn that form in the presence of reactive oxygen species and cytochrome c, a proapoptotic peroxidase that is released from mitochondria during sustained oxidative stress. In contrast to canonical cross-β amyloids, these aggregates retain high degrees of internal dynamics, which enables their characterization by solution-state NMR spectroscopy. We find that intermolecular dityrosine crosslinks restrict αSyn motions only locally whereas large segments of concatenated molecules remain flexible and disordered. Indistinguishable aggregates form in crowded in vitro solutions and in complex environments of mammalian cell lysates, where relative amounts of free reactive oxygen species, rather than cytochrome c, are rate limiting. We further establish that dityrosine adducts inhibit classical amyloid formation by maintaining αSyn in its monomeric form and that they are non-cytotoxic despite retaining basic membrane-binding properties. Our results suggest that oxidative αSyn aggregation scavenges cytochrome c's activity into the formation of amorphous, high molecular-weight structures that may contribute to the structural diversity of Lewy body deposits. Fil: Verzini, Silvia. Leibniz Institute Of Molecular Pharmacology; Alemania Fil: Shah, Maliha. Max Delbrück Center For Molecular Medicine; Alemania Fil: Theillet, Francois-Xavier. Leibniz Institute Of Molecular Pharmacology; Alemania Fil: Belsom, Adam. Technische Universität Berlin,; Alemania Fil: Bieschke, Jan. Max Delbrück Center For Molecular Medicine; Alemania Fil: Wanker, Erich E.. Max Delbrück Center For Molecular Medicine; Alemania Fil: Rappsilber, Juri. Technische Universität Berlin,; Alemania Fil: Binolfi, Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina Fil: Selenko, Philipp. Weizmann Institute Of Science.; Israel |
description |
Heterogeneous aggregates of the human protein α-synuclein (αSyn) are abundantly found in Lewy body inclusions of Parkinson's disease patients. While structural information on classical αSyn amyloid fibrils is available, little is known about the conformational properties of disease-relevant, non-canonical aggregates. Here, we analyze the structural and dynamic properties of megadalton-sized dityrosine adducts of αSyn that form in the presence of reactive oxygen species and cytochrome c, a proapoptotic peroxidase that is released from mitochondria during sustained oxidative stress. In contrast to canonical cross-β amyloids, these aggregates retain high degrees of internal dynamics, which enables their characterization by solution-state NMR spectroscopy. We find that intermolecular dityrosine crosslinks restrict αSyn motions only locally whereas large segments of concatenated molecules remain flexible and disordered. Indistinguishable aggregates form in crowded in vitro solutions and in complex environments of mammalian cell lysates, where relative amounts of free reactive oxygen species, rather than cytochrome c, are rate limiting. We further establish that dityrosine adducts inhibit classical amyloid formation by maintaining αSyn in its monomeric form and that they are non-cytotoxic despite retaining basic membrane-binding properties. Our results suggest that oxidative αSyn aggregation scavenges cytochrome c's activity into the formation of amorphous, high molecular-weight structures that may contribute to the structural diversity of Lewy body deposits. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-10 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/181646 Verzini, Silvia; Shah, Maliha; Theillet, Francois-Xavier; Belsom, Adam; Bieschke, Jan; et al.; Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics; Academic Press Ltd - Elsevier Science Ltd; Journal of Molecular Biology; 432; 24; 10-2020; 1-45 0022-2836 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/181646 |
identifier_str_mv |
Verzini, Silvia; Shah, Maliha; Theillet, Francois-Xavier; Belsom, Adam; Bieschke, Jan; et al.; Megadalton-sized dityrosine aggregates of α-synuclein retain high degrees of structural disorder and internal dynamics; Academic Press Ltd - Elsevier Science Ltd; Journal of Molecular Biology; 432; 24; 10-2020; 1-45 0022-2836 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmb.2020.10.023 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0022283620305982 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Academic Press Ltd - Elsevier Science Ltd |
publisher.none.fl_str_mv |
Academic Press Ltd - Elsevier Science Ltd |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1842269047495852032 |
score |
13.13397 |