Results 61 to 70 of about 7,120 (174)

The Extract of Rhodobacter sphaeroides Inhibits Melanogenesis through the MEK/ERK Signaling Pathway

Marine Drugs, 2013
Reducing hyperpigmentation has been a big issue for years. Even though pigmentation is a normal mechanism protecting skin from UV-causing DNA damage and oxidative stress, it is still an aesthetic problem for many people.
Chen-Hsun Liu, Che-Hsin Lee, Fu-Hsin Chang, Wen-Sheng Liu, Wei-Kuang Wang, Yu-Diao Kuan, Kuo-Hsun Chiu   +6 more
doaj   +1 more source

Es werde Licht! Licht als Antrieb und Regulator in synthetischen Zellen

Angewandte Chemie, Volume 138, Issue 24, 8 June 2026.
Zellen sind Systeme außerhalb des Gleichgewichts, die ihre Eigenschaften in Raum und Zeit regulieren. In biomimetischen synthetischen Zellen bietet Licht eine einzigartige Möglichkeit, Vorgänge räumlich und zeitlich anzutreiben und zu kontrollieren.
Matthew E. Allen, Saskia Frank, Mehaiarii Louis, Atreyee Saha, Ali Heidari, Seraphine V. Wegner   +5 more
wiley   +1 more source

Mechanistic Studies of Rhodobacter sphaeroides Me2SO Reductase [PDF]

Journal of Biological Chemistry, 2005
Studies of the molybdenum-containing dimethyl sulfoxide reductase from Rhodobacter sphaeroides have yielded new insight into its catalytic mechanism. A series of reductive titrations, performed over the pH range 6-10, reveal that the absorption spectrum of reduced enzyme is highly sensitive to pH.
Nathan, Cobb, Thomas, Conrads, Russ, Hille   +2 more
openaire   +2 more sources

Let There be Light! Light as an Engine and Regulator in Synthetic Cells

Angewandte Chemie International Edition, Volume 65, Issue 24, 8 June 2026.
Cells are out‐of‐equilibrium systems that regulate their spatiotemporal features. In biomimetic synthetic cells, light offers a unique way for energizing and regulating events in space and time. This review explores the implementation of light‐responsive tools in synthetic cells to replicate biological functions and enable new bioinspired behaviors ...
Matthew E. Allen, Saskia Frank, Mehaiarii Louis, Atreyee Saha, Ali Heidari, Seraphine V. Wegner   +5 more
wiley   +1 more source

Electron transport-dependent taxis in Rhodobacter sphaeroides [PDF]

Journal of Bacteriology, 1995
Rhodobacter sphaeroides showed chemotaxis to the terminal electron acceptors oxygen and dimethyl sulfoxide, and the responses to these effectors were shown to be influenced by the relative activities of the different electron transport pathways. R. sphaeroides cells tethered by their flagella showed a step-down response to a decrease in the oxygen or ...
D E, Gauden, J P, Armitage
openaire   +2 more sources

Plant-Growth-Promoting Effect by Cell Components of Purple Non-Sulfur Photosynthetic Bacteria

Microorganisms, 2022
Rhodobacter sphaeroides, a purple non-sulfur photosynthetic bacterium (PNSB), was disrupted by sonication and fractionated by centrifugation into the supernatant and pellet.
Shuhei Hayashi, Yasunari Iwamoto, Yuki Hirakawa, Koichi Mori, Naoki Yamada, Takaaki Maki, Shinjiro Yamamoto, Hitoshi Miyasaka   +7 more
doaj   +1 more source

The oxygen‐sensing FixLJ represses nitrogen fixation in Rhodopseudomonas palustris in response to oxygen

mLife, Volume 5, Issue 3, Page 312-324, June 2026.
Abstract Biological nitrogen fixation in symbiotic diazotrophs is subject to oxygen regulation by an oxygen‐sensing FixLJ two‐component system under micro‐oxic conditions. However, it remains unclear whether this mechanism is conserved in free‐living diazotrophs.
Lingwei Cui, Yan Zeng, Mengmei Wang, Lu Huang, Zheyi Wang, Ying Liu, Yanning Zheng   +6 more
wiley   +1 more source

Structural Characterization of the Fla2 Flagellum of Rhodobacter sphaeroides [PDF]

Journal of Bacteriology, 2015
ABSTRACT Rhodobacter sphaeroides is a free-living alphaproteobacterium that contains two clusters of functional flagellar genes in its genome: one acquired by horizontal gene transfer (fla1) and one that is endogenous (fla2).
Javier, de la Mora, Kaoru, Uchida, Ana Martínez, del Campo, Laura, Camarena, Shin-Ichi, Aizawa, Georges, Dreyfus   +5 more
openaire   +2 more sources

Chloroplast glycerolipid metabolism during maintenance and under stress

The Plant Journal, Volume 126, Issue 5, June 2026.
SUMMARY Chloroplasts are the defining organelles in green plant tissues, converting light into chemical energy with the help of an intricate and extensive membrane system, the thylakoids. In the process, they release oxygen and assimilate carbon and other elements into molecules that constitute a plant cell's building blocks.
Yosia Mugume, John E. Froehlich, Christoph Benning   +2 more
wiley   +1 more source

Superoxide Generation by Chlorophyllide a Reductase of Rhodobacter sphaeroides [PDF]

Journal of Biological Chemistry, 2008
Chlorophyllide a reductase of Rhodobacter sphaeroides, which were reconstituted with the purified subunits of BchX, BchY, and BchZ, reduced ring B of chlorophyllide a using NADH under anaerobic conditions. Interestingly, suppressor mutations rescuing the inability of R.
Eui-Jin, Kim, Ju-Sim, Kim, Il-Han, Lee, Hae J, Rhee, Jeong K, Lee   +4 more
openaire   +2 more sources