Sortase-mediated segmental labeling: A method for segmental assignment of intrinsically disordered regions in proteins.

A significant number of proteins possess sizable intrinsically disordered regions (IDRs). Due to the dynamic nature of IDRs, NMR spectroscopy is often the tool of choice for characterizing these segments. However, the application of NMR to IDRs is often hindered by their instability, spectral overla...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Kristina V Boyko, Erin A Rosenkranz, Derrick M Smith, Heather L Miears, Melissa Oueld Es Cheikh, Micah Z Lund, Jeffery C Young, Patrick N Reardon, Mark Okon, Serge L Smirnov, John M Antos
Formato: article
Lenguaje:EN
Publicado: Public Library of Science (PLoS) 2021
Materias:
R
Q
Acceso en línea:https://doaj.org/article/1d443f071c4e45259e7777728beab55b
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:1d443f071c4e45259e7777728beab55b
record_format dspace
spelling oai:doaj.org-article:1d443f071c4e45259e7777728beab55b2021-12-02T20:16:31ZSortase-mediated segmental labeling: A method for segmental assignment of intrinsically disordered regions in proteins.1932-620310.1371/journal.pone.0258531https://doaj.org/article/1d443f071c4e45259e7777728beab55b2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0258531https://doaj.org/toc/1932-6203A significant number of proteins possess sizable intrinsically disordered regions (IDRs). Due to the dynamic nature of IDRs, NMR spectroscopy is often the tool of choice for characterizing these segments. However, the application of NMR to IDRs is often hindered by their instability, spectral overlap and resonance assignment difficulties. Notably, these challenges increase considerably with the size of the IDR. In response to these issues, here we report the use of sortase-mediated ligation (SML) for segmental isotopic labeling of IDR-containing samples. Specifically, we have developed a ligation strategy involving a key segment of the large IDR and adjacent folded headpiece domain comprising the C-terminus of A. thaliana villin 4 (AtVLN4). This procedure significantly reduces the complexity of NMR spectra and enables group identification of signals arising from the labeled IDR fragment, a process we refer to as segmental assignment. The validity of our segmental assignment approach is corroborated by backbone residue-specific assignment of the IDR using a minimal set of standard heteronuclear NMR methods. Using segmental assignment, we further demonstrate that the IDR region adjacent to the headpiece exhibits nonuniform spectral alterations in response to temperature. Subsequent residue-specific characterization revealed two segments within the IDR that responded to temperature in markedly different ways. Overall, this study represents an important step toward the selective labeling and probing of target segments within much larger IDR contexts. Additionally, the approach described offers significant savings in NMR recording time, a valuable advantage for the study of unstable IDRs, their binding interfaces, and functional mechanisms.Kristina V BoykoErin A RosenkranzDerrick M SmithHeather L MiearsMelissa Oueld Es CheikhMicah Z LundJeffery C YoungPatrick N ReardonMark OkonSerge L SmirnovJohn M AntosPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 10, p e0258531 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Kristina V Boyko
Erin A Rosenkranz
Derrick M Smith
Heather L Miears
Melissa Oueld Es Cheikh
Micah Z Lund
Jeffery C Young
Patrick N Reardon
Mark Okon
Serge L Smirnov
John M Antos
Sortase-mediated segmental labeling: A method for segmental assignment of intrinsically disordered regions in proteins.
description A significant number of proteins possess sizable intrinsically disordered regions (IDRs). Due to the dynamic nature of IDRs, NMR spectroscopy is often the tool of choice for characterizing these segments. However, the application of NMR to IDRs is often hindered by their instability, spectral overlap and resonance assignment difficulties. Notably, these challenges increase considerably with the size of the IDR. In response to these issues, here we report the use of sortase-mediated ligation (SML) for segmental isotopic labeling of IDR-containing samples. Specifically, we have developed a ligation strategy involving a key segment of the large IDR and adjacent folded headpiece domain comprising the C-terminus of A. thaliana villin 4 (AtVLN4). This procedure significantly reduces the complexity of NMR spectra and enables group identification of signals arising from the labeled IDR fragment, a process we refer to as segmental assignment. The validity of our segmental assignment approach is corroborated by backbone residue-specific assignment of the IDR using a minimal set of standard heteronuclear NMR methods. Using segmental assignment, we further demonstrate that the IDR region adjacent to the headpiece exhibits nonuniform spectral alterations in response to temperature. Subsequent residue-specific characterization revealed two segments within the IDR that responded to temperature in markedly different ways. Overall, this study represents an important step toward the selective labeling and probing of target segments within much larger IDR contexts. Additionally, the approach described offers significant savings in NMR recording time, a valuable advantage for the study of unstable IDRs, their binding interfaces, and functional mechanisms.
format article
author Kristina V Boyko
Erin A Rosenkranz
Derrick M Smith
Heather L Miears
Melissa Oueld Es Cheikh
Micah Z Lund
Jeffery C Young
Patrick N Reardon
Mark Okon
Serge L Smirnov
John M Antos
author_facet Kristina V Boyko
Erin A Rosenkranz
Derrick M Smith
Heather L Miears
Melissa Oueld Es Cheikh
Micah Z Lund
Jeffery C Young
Patrick N Reardon
Mark Okon
Serge L Smirnov
John M Antos
author_sort Kristina V Boyko
title Sortase-mediated segmental labeling: A method for segmental assignment of intrinsically disordered regions in proteins.
title_short Sortase-mediated segmental labeling: A method for segmental assignment of intrinsically disordered regions in proteins.
title_full Sortase-mediated segmental labeling: A method for segmental assignment of intrinsically disordered regions in proteins.
title_fullStr Sortase-mediated segmental labeling: A method for segmental assignment of intrinsically disordered regions in proteins.
title_full_unstemmed Sortase-mediated segmental labeling: A method for segmental assignment of intrinsically disordered regions in proteins.
title_sort sortase-mediated segmental labeling: a method for segmental assignment of intrinsically disordered regions in proteins.
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/1d443f071c4e45259e7777728beab55b
work_keys_str_mv AT kristinavboyko sortasemediatedsegmentallabelingamethodforsegmentalassignmentofintrinsicallydisorderedregionsinproteins
AT erinarosenkranz sortasemediatedsegmentallabelingamethodforsegmentalassignmentofintrinsicallydisorderedregionsinproteins
AT derrickmsmith sortasemediatedsegmentallabelingamethodforsegmentalassignmentofintrinsicallydisorderedregionsinproteins
AT heatherlmiears sortasemediatedsegmentallabelingamethodforsegmentalassignmentofintrinsicallydisorderedregionsinproteins
AT melissaoueldescheikh sortasemediatedsegmentallabelingamethodforsegmentalassignmentofintrinsicallydisorderedregionsinproteins
AT micahzlund sortasemediatedsegmentallabelingamethodforsegmentalassignmentofintrinsicallydisorderedregionsinproteins
AT jefferycyoung sortasemediatedsegmentallabelingamethodforsegmentalassignmentofintrinsicallydisorderedregionsinproteins
AT patricknreardon sortasemediatedsegmentallabelingamethodforsegmentalassignmentofintrinsicallydisorderedregionsinproteins
AT markokon sortasemediatedsegmentallabelingamethodforsegmentalassignmentofintrinsicallydisorderedregionsinproteins
AT sergelsmirnov sortasemediatedsegmentallabelingamethodforsegmentalassignmentofintrinsicallydisorderedregionsinproteins
AT johnmantos sortasemediatedsegmentallabelingamethodforsegmentalassignmentofintrinsicallydisorderedregionsinproteins
_version_ 1718374453386149888