Temperature-dependent iron motion in extremophile rubredoxins - no need for 'corresponding states'.
Corresponding States
Extremophile
Hyperthermophile
Iron-Sulfur
Psychrophile
Rubredoxin
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
28 May 2024
28 May 2024
Historique:
received:
15
12
2023
accepted:
15
05
2024
medline:
29
5
2024
pubmed:
29
5
2024
entrez:
28
5
2024
Statut:
epublish
Résumé
Extremophile organisms are known that can metabolize at temperatures down to - 25 °C (psychrophiles) and up to 122 °C (hyperthermophiles). Understanding viability under extreme conditions is relevant for human health, biotechnological applications, and our search for life elsewhere in the universe. Information about the stability and dynamics of proteins under environmental extremes is an important factor in this regard. Here we compare the dynamics of small Fe-S proteins - rubredoxins - from psychrophilic and hyperthermophilic microorganisms, using three different nuclear techniques as well as molecular dynamics calculations to quantify motion at the Fe site. The theory of 'corresponding states' posits that homologous proteins from different extremophiles have comparable flexibilities at the optimum growth temperatures of their respective organisms. Although 'corresponding states' would predict greater flexibility for rubredoxins that operate at low temperatures, we find that from 4 to 300 K, the dynamics of the Fe sites in these homologous proteins are essentially equivalent.
Identifiants
pubmed: 38806591
doi: 10.1038/s41598-024-62261-2
pii: 10.1038/s41598-024-62261-2
doi:
Substances chimiques
Iron
E1UOL152H7
Rubredoxins
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
12197Subventions
Organisme : NIH HHS
ID : GM-65440
Pays : United States
Organisme : NIH HHS
ID : GM-125924
Pays : United States
Organisme : NSF
ID : MCB-2149122
Informations de copyright
© 2024. The Author(s).
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