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Title: The binuclear cluster of [FeFe] hydrogenase is formed with sulfur donated by cysteine of an [Fe(Cys)(CO) 2 (CN)] organometallic precursor

Abstract

Significance [FeFe]-hydrogenases catalyze H 2 evolution at extraordinary rates at low overpotential using base metal (not platinum). In the field of renewable energy, the biosynthesis of these enzymes’ active sites, the H-cluster, is of intense interest. Among its many cofactors, the azadithiolate is unique, and its biosynthesis remains enigmatic. Three Fe–S proteins, HydE, HydF, and HydG, are essential for the H-cluster bioassembly. This paper describes an in vitro assembly approach where a synthetic [Fe(cysteine)(CO) 2 (CN)] complex, “syn-B,” allows HydG-free biosynthesis of the active enzyme. Using isotopic and S/Se labeling, syn-B is shown to contribute Fe(CO) 2 (CN)S to the biosynthesis. This work sets the stage for further investigation of the H-cluster bioassembly.

Authors:
ORCiD logo [1];  [2];  [3]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [2]
  1. Department of Chemistry, University of California, Davis, CA 95616,
  2. School of Chemical Sciences, University of Illinois at Urbana–Champaign, Urbana, IL 61801,
  3. Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR 97239
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1567868
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 116 Journal Issue: 42; Journal ID: ISSN 0027-8424
Publisher:
Proceedings of the National Academy of Sciences
Country of Publication:
United States
Language:
English

Citation Formats

Rao, Guodong, Pattenaude, Scott A., Alwan, Katherine, Blackburn, Ninian J., Britt, R. David, and Rauchfuss, Thomas B. The binuclear cluster of [FeFe] hydrogenase is formed with sulfur donated by cysteine of an [Fe(Cys)(CO) 2 (CN)] organometallic precursor. United States: N. p., 2019. Web. doi:10.1073/pnas.1913324116.
Rao, Guodong, Pattenaude, Scott A., Alwan, Katherine, Blackburn, Ninian J., Britt, R. David, & Rauchfuss, Thomas B. The binuclear cluster of [FeFe] hydrogenase is formed with sulfur donated by cysteine of an [Fe(Cys)(CO) 2 (CN)] organometallic precursor. United States. https://doi.org/10.1073/pnas.1913324116
Rao, Guodong, Pattenaude, Scott A., Alwan, Katherine, Blackburn, Ninian J., Britt, R. David, and Rauchfuss, Thomas B. Mon . "The binuclear cluster of [FeFe] hydrogenase is formed with sulfur donated by cysteine of an [Fe(Cys)(CO) 2 (CN)] organometallic precursor". United States. https://doi.org/10.1073/pnas.1913324116.
@article{osti_1567868,
title = {The binuclear cluster of [FeFe] hydrogenase is formed with sulfur donated by cysteine of an [Fe(Cys)(CO) 2 (CN)] organometallic precursor},
author = {Rao, Guodong and Pattenaude, Scott A. and Alwan, Katherine and Blackburn, Ninian J. and Britt, R. David and Rauchfuss, Thomas B.},
abstractNote = {Significance [FeFe]-hydrogenases catalyze H 2 evolution at extraordinary rates at low overpotential using base metal (not platinum). In the field of renewable energy, the biosynthesis of these enzymes’ active sites, the H-cluster, is of intense interest. Among its many cofactors, the azadithiolate is unique, and its biosynthesis remains enigmatic. Three Fe–S proteins, HydE, HydF, and HydG, are essential for the H-cluster bioassembly. This paper describes an in vitro assembly approach where a synthetic [Fe(cysteine)(CO) 2 (CN)] complex, “syn-B,” allows HydG-free biosynthesis of the active enzyme. Using isotopic and S/Se labeling, syn-B is shown to contribute Fe(CO) 2 (CN)S to the biosynthesis. This work sets the stage for further investigation of the H-cluster bioassembly.},
doi = {10.1073/pnas.1913324116},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 42,
volume = 116,
place = {United States},
year = {Mon Sep 30 00:00:00 EDT 2019},
month = {Mon Sep 30 00:00:00 EDT 2019}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1073/pnas.1913324116

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Cited by: 23 works
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