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Heterologous Expression of Alteromonas macleodii and Thiocapsa roseopersicina [NiFe] Hydrogenases in Synechococcus elongatus

Overview of attention for article published in PLOS ONE, May 2011
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Title
Heterologous Expression of Alteromonas macleodii and Thiocapsa roseopersicina [NiFe] Hydrogenases in Synechococcus elongatus
Published in
PLOS ONE, May 2011
DOI 10.1371/journal.pone.0020126
Pubmed ID
Authors

Philip D. Weyman, Walter A. Vargas, Yingkai Tong, Jianping Yu, Pin-Ching Maness, Hamilton O. Smith, Qing Xu

Abstract

Oxygen-tolerant [NiFe] hydrogenases may be used in future photobiological hydrogen production systems once the enzymes can be heterologously expressed in host organisms of interest. To achieve heterologous expression of [NiFe] hydrogenases in cyanobacteria, the two hydrogenase structural genes from Alteromonas macleodii Deep ecotype (AltDE), hynS and hynL, along with the surrounding genes in the gene operon of HynSL were cloned in a vector with an IPTG-inducible promoter and introduced into Synechococcus elongatus PCC7942. The hydrogenase protein was expressed at the correct size upon induction with IPTG. The heterologously-expressed HynSL hydrogenase was active when tested by in vitro H(2) evolution assay, indicating the correct assembly of the catalytic center in the cyanobacterial host. Using a similar expression system, the hydrogenase structural genes from Thiocapsa roseopersicina (hynSL) and the entire set of known accessory genes were transferred to S. elongatus. A protein of the correct size was expressed but had no activity. However, when the 11 accessory genes from AltDE were co-expressed with hynSL, the T. roseopersicina hydrogenase was found to be active by in vitro assay. This is the first report of active, heterologously-expressed [NiFe] hydrogenases in cyanobacteria.

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Geographical breakdown

Country Count As %
India 1 2%
Denmark 1 2%
France 1 2%
Brazil 1 2%
Unknown 48 92%

Demographic breakdown

Readers by professional status Count As %
Researcher 18 35%
Student > Ph. D. Student 10 19%
Student > Bachelor 4 8%
Professor > Associate Professor 3 6%
Student > Master 3 6%
Other 8 15%
Unknown 6 12%
Readers by discipline Count As %
Agricultural and Biological Sciences 24 46%
Biochemistry, Genetics and Molecular Biology 11 21%
Chemistry 4 8%
Engineering 2 4%
Computer Science 1 2%
Other 3 6%
Unknown 7 13%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 21 March 2012.
All research outputs
#18,305,470
of 22,663,969 outputs
Outputs from PLOS ONE
#153,769
of 193,506 outputs
Outputs of similar age
#95,882
of 112,106 outputs
Outputs of similar age from PLOS ONE
#1,400
of 1,685 outputs
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