Results 91 to 100 of about 14,298 (196)

Control of Photosystem Formation in Rhodobacter sphaeroides [PDF]

Journal of Bacteriology, 1998
Rhodobacter sphaeroides has the capacity to grow by aerobic and anaerobic respiration and photosynthetically in the light under anaerobic conditions, as well as fermentatively. It can fix atmospheric nitrogen and carbon dioxide. It resembles other gram-negative members of the class Proteobacteria when growing aerobically, but a reduction in oxygen ...
J, Zeilstra-Ryalls, M, Gomelsky, J M, Eraso, A, Yeliseev, J, O'Gara, S, Kaplan   +5 more
openaire   +2 more sources

Bacterial Cellulose Synthase Catalyzes the Formation of Chitin

ChemistrySelect, Volume 11, Issue 15, 20 April 2026.
Recombinant BcsA‐B from Rhodobacter sphaeroides is shown to cleave UDP‐GlcNAc (uridine diphosphate N‐acetylglucosamine), generating chitin with distinct β‐chitin Raman bands. These findings reveal that a cellulose synthase can process an alternative nucleotide sugar, providing biochemical evidence for the co‐synthesis of cellulose and chitin.
Neraz Shai, Sapir Korman Shadmi, Mariela J. Pavan, Filipe Natalio   +3 more
wiley   +1 more source

CHEMICALLY MODIFIED PHOTOSYNTHETIC BACTERIAL REACTION CENTERS: CIRCULAR DICHROISM, RAMAN RESONANCE, LOW TEMPERATURE ABSORPTION, FLUORESCENCE AND ODMR SPECTRA AND POLYPEPTIDE COMPOSITION OF BOROHYDRIDE TREATED REACTION CENTERS FROM Rhodobacter sphaeroides R26 [PDF]

, 1988
Reaction centers from Rhodobacter sphaeroides have been modified by treatment with sodium borohydride similar to the original procedure [Ditson et al., Biochim. Biophys. Acta 766, 623 (1984)], and investigated spectroscopically and by gel electrophoresis.
A. Angerhofer, Beese, D., Angerhofer, A., Scheer, Hugo, Lutz, M., D. Beese, H. Scheer, Robert, B., M. Lutz, Steiner, R., R. Steiner, B. Robert   +11 more
core   +1 more source

Bimetallic Peroxide Nanocomposites‐Driven Redox Dyshomeostasis to Activate Sequential Cuproptosis and Pyroptosis for Amplified Tumor Immunotherapy

Advanced Science, Volume 13, Issue 18, 27 March 2026.
Hyaluronic acid‐modified bimetallic peroxide nanocomposites (MgO2‐CuO2@HA) are designed for synergistic tumor therapy. The nanocomposites release Mg2+, H2O2, and Cu2+ in tumor cells, induce cuproptosis via Cu+‐mediated protein aggregation, and activate pyroptosis through caspase‐1/gasdermin D pathways for inducing immunogenic cell death, collectively ...
Guanting He, Haixia Zhu, Peipei Kang, Lili Feng, Chenghao Yu, Yanlin Zhu, Bin Liu, Zhengxiao Guo, Piaoping Yang   +8 more
wiley   +1 more source

Mechanisms of spinal glial activation in chemotherapy‐induced peripheral neuropathy: Focus on microglia and astrocytes

Ibrain, Volume 12, Issue 1, Page 65-85, Spring 2026.
Chemotherapy‐induced peripheral neuropathy (CIPN) remains a major clinical challenge, with central sensitization considered an important pathological mechanism in its occurrence and persistence. This review focuses on spinal astrocytes and microglia, systematically summarizing the pathological mechanisms of spinal glial cells involved in CIPN caused by
Long Gu, Song Cao, Yonghuai Feng
wiley   +1 more source

Biostimulation effect of Rhodobacter sphaeroides on Arabidopsis thaliana grown in soils contaminated with heavy metals and polychlorinated biphenyls

Current Plant Biology
The study investigated heavy metals (HMs) and polychlorinated biphenyls (PCBs) in a soil from the industrialized area of Taranto, Italy, identifying 16 HMs and 31 PCB congeners.
Rossella Labarile, Pietro Cotugno, Valeria Ancona, Massimo Trotta, Pasqua Veronico   +4 more
doaj   +1 more source

Engineered biosynthesis of bacteriochlorophyll gF in Rhodobacter sphaeroides

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2018
Engineering photosynthetic bacteria to utilize a heterologous reaction center that contains a different (bacterio) chlorophyll could improve solar energy conversion efficiency by allowing cells to absorb a broader range of the solar spectrum. One promising candidate is the homodimeric type I reaction center from Heliobacterium modesticaldum.
Marcia Ortega-Ramos, Daniel P. Canniffe, Matthew I. Radle, C. Neil Hunter, Donald A. Bryant, John H. Golbeck   +5 more
openaire   +2 more sources

On the osmotic signal and osmosensing mechanism of an ABC transport system [PDF]

, 2001
Wat verandert er in het zenuwstelsel als een dier iets leert? Hoe worden herinneringen opgeslagen in de hersenen? Hieraan ten grondslag ligt het vermogen van het zenuwstelsel om zich aan wisselende omstandigheden aan te passen, of, met andere woorden ...
Heide, Tiemen van der,, Poolman, Bert,, Stuart, M.C.A., Poolman, B., Stuart, M.C.A.; id_orcid, Stuart, Marc C.A.,, van der Heide, T., van der Heide, Tiemen, Heide, Tiemen van der, T. van der Heide   +9 more
core   +14 more sources

Enhancing polyphenol synthesis and antioxidant activity in Camellia sinensis using shikimic and salicylic acids

JSFA reports, Volume 6, Issue 3, Page 73-87, March 2026.
Abstract Background Camellia sinensis, widely consumed as tea, is the second most popular beverage globally and is valued for its health benefits. However, environmental stressors pose a significant challenge to the tea industry. This study investigates the potential of shikimic acid (ShA) and its derivative, salicylic acid (SA), as inducers to enhance
Mir Sultanul Arafin, Shelina Akter Sheuli, Sadia Sultana, Mahir Azmal, Ajit Ghosh   +4 more
wiley   +1 more source

Precise regulating the specific oxygen consumption rate to strengthen the CoQ10 biosynthesis by Rhodobater sphaeroides

Bioresources and Bioprocessing
Coenzyme Q10 (CoQ10) is the most consumed dietary supplement and mainly biosynthesized by aerobic fermentation of Rhodobacter sphaeroides (R. sphaeroides). Oxygen supply was identified as a bottleneck for improving CoQ10 yield in R. sphaeroides.
Bo Li, Yan Ge, Jianguang Liang, Zhichun Zhu, Biqin Chen, Dan Li, Yingping Zhuang, Zejian Wang   +7 more
doaj   +1 more source