Subscribe free to our newsletters via your
  Energy News  




Subscribe free to our newsletters via your




















BIO FUEL
Hydrogen production: This is how green algae assemble their enzymes
by Staff Writers
Bochum, Germany (SPX) Mar 30, 2017


Anne Sawyer has gained new insights into the protein machinery of green algae. Image courtesy RUB, Kramer.

Researchers at Ruhr-Universitat Bochum have analysed how green algae manufacture complex components of a hydrogen-producing enzyme. The enzyme, known as the hydrogenase, may be relevant for the biotechnological production of hydrogen.

To date, little is known about the way organisms form this type of hydrogenases under natural conditions. Using novel synthetic biology methods, the team around Dr Anne Sawyer, PhD student Yu Bai, assistant professor Dr Anja Hemschemeier and Prof Dr Thomas Happe from the Bochum-based research group Photobiotechnology, discovered that a specific protein machinery in the green algal chloroplasts is required for the production of a functional hydrogenase. The researchers published their findings in "The Plant Journal".

The team worked with the single-cell alga Chlamydomonas reinhardtii. These organisms have a specific protein machinery in different regions of the cells that assembles enzymes - e.g. in the photosynthesis-conducting chloroplasts and in the cell fluid, i.e. the cytoplasm.

One enzyme that requires such assembly is the HYDA1 enzyme, which contains a complex cofactor, which is the area inside the enzyme where the actual hydrogen production takes place.

The cofactor consists of a cluster of four iron and four sulphur atoms; a configuration frequently found in enzymes. What is unusual, however, is that a second cluster of two additional iron atoms binds to it for the hydrogen catalysis.

Special protein machinery necessary
Happe, Sawyer and their colleagues intended to identify the elements necessary for producing the cofactor in the living cell. They introduced hydrogenase precursors in different regions of the green algal cell, namely in the chloroplast and the cytoplasm.

The protein machinery in the chloroplast was the only one capable of assembling a functioning hydrogenase. The machinery in the cytoplasm couldn't produce the complex cofactor.

Bacterial enzyme in green algae
In a subsequent test, the researchers implanted the blueprint of a bacterial hydrogenase in the green algal genome. Chlamydomonas reinhardtii used it to produce a functional enzyme that efficiently generated hydrogen.

"Based on these findings, we can develop biotechnological methods, in order to achieve efficient hydrogen production in green algae," says Happe. "We now know that the machinery that assembles enzymes in the chloroplasts is unique and irreplaceable."

Research paper

BIO FUEL
Chemists ID catalytic 'key' for converting CO2 to methanol
Upton NY (SPX) Mar 27, 2017
Capturing carbon dioxide (CO2) and converting it to useful chemicals such as methanol could reduce both pollution and our dependence on petroleum products. So scientists are intensely interested in the catalysts that facilitate such chemical conversions. Like molecular dealmakers, catalysts bring the reacting chemicals together in a way that makes it easier for them to break and rearrange their ... read more

Related Links
Ruhr-University Bochum
Bio Fuel Technology and Application News

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

BIO FUEL
Report: Global renewable power capacity expanding

Financialization's negative effect on the American solar industry

Bio-inspired energy storage: A new light for solar power

First Solar to deliver 48Mw Manildra solar farm

BIO FUEL
Gazprom boasts of expanding gas exports

Qatar to increase gas production by 10 percent

New technology could end costly crude oil pipeline blockages

Slow start for oil prices in the first trading day in April

BIO FUEL
Japan scientist eyes energy burst from 'typhoon turbine'

Mega-wind farm offshore Denmark clears hurdle

North Carolina offshore wind hailed as job creator

North Carolina ready for offshore wind energy auction

BIO FUEL
How does oxygen get into a fuel cell

Clarifying how lithium ions ferry around in rechargeable batteries

Building a market for renewable thermal technologies

New gel-like coating beefs up the performance of lithium-sulfur batteries

BIO FUEL
Toshiba's US nuclear unit files for bankruptcy protection

Toshiba execs under fire as loss forecast balloons

Westinghouse's woes spotlight US nuclear sector's decline

Japan high court rules nuclear reactors can restart

BIO FUEL
Ford boosts research in Canada for connected cars

Tesla tops quarterly sales forecast

London, Paris, Seoul launch 'name-and-shame' polluting car index

VW reaches $157 mn diesel settlement with 10 US states

BIO FUEL
Unique wheat passes the test

Robotics aid in the study of corn and drought tolerance

WSU findings point way to more nutritious crops

Scientists are trying to make cows more eco-friendly

BIO FUEL
Spray-on memory could enable bendable digital storage

ADATS could assist X-planes with large, super-fast data transmission

Nanomagnets for future data storage

Atomic 're-packing' behind metallic glass mystery




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement