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Title: Heterologous Expression and Engineering of the Nitrogenase Cofactor Biosynthesis Scaffold NifEN

Abstract

Abstract NifEN plays a crucial role in the biosynthesis of nitrogenase, catalyzing the final step of cofactor maturation prior to delivering the cofactor to NifDK, the catalytic component of nitrogenase. The difficulty in expressing NifEN, a complex, heteromultimeric metalloprotein sharing structural/functional homology with NifDK, is a major challenge in the heterologous expression of nitrogenase. Herein, we report the expression and engineering of Azotobacter vinelandii NifEN in Escherichia coli . Biochemical and spectroscopic analyses demonstrate the integrity of the heterologously expressed NifEN in composition and functionality and, additionally, the ability of an engineered NifEN variant to mimic NifDK in retaining the matured cofactor at an analogous cofactor‐binding site. This is an important step toward piecing together a viable pathway for the heterologous expression of nitrogenase and identifying variants for the mechanistic investigation of this enzyme.

Authors:
 [1];  [2];  [2];  [1]; ORCiD logo [1];  [2]
  1. Univ. of California, Irvine, CA (United States). Dept. of Molecular Biology & Biochemistry. Dept. Chemistry
  2. Univ. of California, Irvine, CA (United States). Dept. of Molecular Biology & Biochemistry
Publication Date:
Research Org.:
Univ. of California, Irvine, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1803013
Alternate Identifier(s):
OSTI ID: 1602596
Grant/Contract Number:  
SC0016510
Resource Type:
Accepted Manuscript
Journal Name:
Angewandte Chemie (International Edition)
Additional Journal Information:
Journal Name: Angewandte Chemie (International Edition); Journal Volume: 59; Journal Issue: 17; Journal ID: ISSN 1433-7851
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; protein engineering; metalloproteins; metalloenzymes; nitrogenase; bioinorganic chemistry

Citation Formats

Solomon, Joseph B., Lee, Chi Chung, Jasniewski, Andrew J., Rasekh, Mahtab F., Ribbe, Markus W., and Hu, Yilin. Heterologous Expression and Engineering of the Nitrogenase Cofactor Biosynthesis Scaffold NifEN. United States: N. p., 2020. Web. doi:10.1002/anie.201916598.
Solomon, Joseph B., Lee, Chi Chung, Jasniewski, Andrew J., Rasekh, Mahtab F., Ribbe, Markus W., & Hu, Yilin. Heterologous Expression and Engineering of the Nitrogenase Cofactor Biosynthesis Scaffold NifEN. United States. https://doi.org/10.1002/anie.201916598
Solomon, Joseph B., Lee, Chi Chung, Jasniewski, Andrew J., Rasekh, Mahtab F., Ribbe, Markus W., and Hu, Yilin. Wed . "Heterologous Expression and Engineering of the Nitrogenase Cofactor Biosynthesis Scaffold NifEN". United States. https://doi.org/10.1002/anie.201916598. https://www.osti.gov/servlets/purl/1803013.
@article{osti_1803013,
title = {Heterologous Expression and Engineering of the Nitrogenase Cofactor Biosynthesis Scaffold NifEN},
author = {Solomon, Joseph B. and Lee, Chi Chung and Jasniewski, Andrew J. and Rasekh, Mahtab F. and Ribbe, Markus W. and Hu, Yilin},
abstractNote = {Abstract NifEN plays a crucial role in the biosynthesis of nitrogenase, catalyzing the final step of cofactor maturation prior to delivering the cofactor to NifDK, the catalytic component of nitrogenase. The difficulty in expressing NifEN, a complex, heteromultimeric metalloprotein sharing structural/functional homology with NifDK, is a major challenge in the heterologous expression of nitrogenase. Herein, we report the expression and engineering of Azotobacter vinelandii NifEN in Escherichia coli . Biochemical and spectroscopic analyses demonstrate the integrity of the heterologously expressed NifEN in composition and functionality and, additionally, the ability of an engineered NifEN variant to mimic NifDK in retaining the matured cofactor at an analogous cofactor‐binding site. This is an important step toward piecing together a viable pathway for the heterologous expression of nitrogenase and identifying variants for the mechanistic investigation of this enzyme.},
doi = {10.1002/anie.201916598},
journal = {Angewandte Chemie (International Edition)},
number = 17,
volume = 59,
place = {United States},
year = {Wed Feb 05 00:00:00 EST 2020},
month = {Wed Feb 05 00:00:00 EST 2020}
}

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