Nanosecond heme-to-heme electron transfer rates in a multiheme cytochrome nanowire reported by a spectrally unique His/Met-ligated heme.
Moser–Dutton ruler
Ru(II)tris(bipyridine)
Shewanella
electron transfer
pump-probe spectroscopy
Journal
Proceedings of the National Academy of Sciences of the United States of America
ISSN: 1091-6490
Titre abrégé: Proc Natl Acad Sci U S A
Pays: United States
ID NLM: 7505876
Informations de publication
Date de publication:
28 09 2021
28 09 2021
Historique:
accepted:
05
08
2021
entrez:
24
9
2021
pubmed:
25
9
2021
medline:
6
10
2021
Statut:
ppublish
Résumé
Proteins achieve efficient energy storage and conversion through electron transfer along a series of redox cofactors. Multiheme cytochromes are notable examples. These proteins transfer electrons over distance scales of several nanometers to >10 μm and in so doing they couple cellular metabolism with extracellular redox partners including electrodes. Here, we report pump-probe spectroscopy that provides a direct measure of the intrinsic rates of heme-heme electron transfer in this fascinating class of proteins. Our study took advantage of a spectrally unique His/Met-ligated heme introduced at a defined site within the decaheme extracellular MtrC protein of
Identifiants
pubmed: 34556577
pii: 2107939118
doi: 10.1073/pnas.2107939118
pmc: PMC8488605
pii:
doi:
Substances chimiques
Cytochrome c Group
0
Cytochromes
0
Heme
42VZT0U6YR
Histidine
4QD397987E
Methionine
AE28F7PNPL
MtrC protein, Shewanella
EC 1.-
Banques de données
figshare
['10.6084/m9.figshare.16622221']
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Biotechnology and Biological Sciences Research Council
ID : BB/S002499/1
Pays : United Kingdom
Organisme : Biotechnology and Biological Sciences Research Council
ID : BB/S000704/1
Pays : United Kingdom
Organisme : Biotechnology and Biological Sciences Research Council
ID : BB/P01819X/1
Pays : United Kingdom
Commentaires et corrections
Type : CommentIn
Informations de copyright
Copyright © 2021 the Author(s). Published by PNAS.
Déclaration de conflit d'intérêts
The authors declare no competing interest.
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