Discovery of novel [FeFe]-hydrogenases for biocatalytic H-2-production

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Land, HenrikUppsala universitet,Molekylär biomimetik (author)

Discovery of novel [FeFe]-hydrogenases for biocatalytic H-2-production

Article/chapterEnglish2019

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2019
Royal Society of Chemistry (RSC),2019
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LIBRIS-ID:oai:DiVA.org:uu-397949
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-397949URI
https://doi.org/10.1039/c9sc03717aDOI

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Language:English
Summary in:English

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A new screening method for [FeFe]-hydrogenases is described, circumventing the need for specialized expression conditions as well as protein purification for initial characterization. [FeFe]-hydrogenases catalyze the formation and oxidation of molecular hydrogen at rates exceeding 10(3) s(-1), making them highly promising for biotechnological applications. However, the discovery of novel [FeFe]-hydrogenases is slow due to their oxygen sensitivity and dependency on a structurally unique cofactor, complicating protein expression and purification. Consequently, only a very limited number have been characterized, hampering their implementation. With the purpose of increasing the throughput of [FeFe]-hydrogenase discovery, we have developed a screening method that allows for rapid identification of novel [FeFe]-hydrogenases as well as their characterization with regards to activity (activity assays and protein film electrochemistry) and spectroscopic properties (electron paramagnetic resonance and Fourier transform infrared spectroscopy). The method is based on in vivo artificial maturation of [FeFe]-hydrogenases in Escherichia coli and all procedures are performed on either whole cells or non-purified cell lysates, thereby circumventing extensive protein purification. The screening was applied on eight putative [FeFe]-hydrogenases originating from different structural sub-classes and resulted in the discovery of two new active [FeFe]-hydrogenases. The [FeFe]-hydrogenase from Solobacterium moorei shows high H-2-gas production activity, while the enzyme from Thermoanaerobacter mathranii represents a hitherto uncharacterized [FeFe]-hydrogenase sub-class. This latter enzyme is a putative sensory hydrogenase and our in vivo spectroscopy study reveals distinct differences compared to the well established H-2 producing HydA1 hydrogenase from Chlamydomonas reinhardtii.

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Ceccaldi, PierreUppsala universitet,Molekylär biomimetik(Swepub:uu)piece309 (author)
Meszaros, Livia S.Uppsala universitet,Molekylär biomimetik(Swepub:uu)livme315 (author)
Lorenzi, MarcoUppsala universitet,Molekylär biomimetik(Swepub:uu)marlo670 (author)
Redman, Holly J.Uppsala universitet,Molekylär biomimetik(Swepub:uu)holre224 (author)
Senger, MoritzFree Univ Berlin, Inst Expt Phys, Expt Mol Biophys, Arnimallee 14, DE-14195 Berlin, Germany (author)
Stripp, Sven T.Free Univ Berlin, Inst Expt Phys, Expt Mol Biophys, Arnimallee 14, DE-14195 Berlin, Germany (author)
Berggren, GustavUppsala universitet,Molekylär biomimetik(Swepub:uu)guber255 (author)
Uppsala universitetMolekylär biomimetik (creator_code:org_t)

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In:Chemical Science: Royal Society of Chemistry (RSC)10:43, s. 9941-99482041-65202041-6539

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By the author/editor: Land, Henrik; Ceccaldi, Pierre; Meszaros, Livia ...; Lorenzi, Marco; Redman, Holly J.; Senger, Moritz; show more...; Stripp, Sven T.; Berggren, Gustav; show less...

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NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Biochemistry and ...

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By the university: Uppsala University

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