Red algae, in contrast, use a slightly different mechanism and are thus more productive. Scientists from the Max Planck Institute of Biochemistry (MPIB) in Martinsried near Munich have now identified a so far unknown helper protein for photosynthesis in red algae. “We could elucidate its structure and its intriguing mechanism,” says Manajit Hayer-Hartl, MPIB group leader. “Comparing its mechanism to the one in green plants could help to design more efficient plants.” Their work has led to two recent publications in Nature and Nature Structural & Molecular Biology.
The helper protein (blue) pulls at one end of Rubisco (multicolored) and thus, releases the sugar. The blockade is lifted. Graphic: Manajit Hayer-Hartl / Copyright: Max Planck Institute of Biochemistry
Green plants, algae and plankton metabolize carbon dioxide (CO2) and water into oxygen and sugar in the presence of light. Without this process called photosynthesis, today’s life on earth would not be possible. The key protein of this process, called Rubisco, is thus one of the most important proteins in nature. It bonds with carbon dioxide and starts its conversion into sugar and oxygen.
„Despite its fundamental importance, Rubisco is an enzyme fraught with shortcomings“, says Manajit Hayer-Hartl, head of the Research Group “Chaperonin-assisted Protein Folding” at the MPIB. One of the problems is that Rubisco binds to wrong sugar molecules that inhibit its activity. The inhibitors have to be removed by a special helper protein, called Rubisco activase. The Max Planck scientists now discovered that during evolution two different Rubisco activases developed in plants and in red algae. They differ in structure and in their working mechanism.
M. Stotz, O. Mueller-Cajar, S. Ciniawsky, P. Wendler, F. U. Hartl, A. Bracher & M. Hayer-Hartl: Structure of green-type Rubisco activase from tobacco. Nature Structural & Molecular Biology, November 6, 2011Contact:
New cellular pathway helps explain how inflammation leads to artery disease
22.06.2018 | Cedars-Sinai Medical Center
Exposure to fracking chemicals and wastewater spurs fat cell development
22.06.2018 | Duke University
In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
22.06.2018 | Life Sciences
22.06.2018 | Physics and Astronomy
22.06.2018 | Life Sciences