Results 61 to 70 of about 3,227 (159)

Development and growth of photosynthetic membranes of Rhodospirillum rubrum [PDF]

Journal of Bacteriology, 1982
In cell-free extracts from low-aeration suspensions of Rhodospirillum rubrum strain G-9, bacteriochlorophyll a was distributed in two bands after rate-zone sedimentation in sucrose density gradients. From the physicochemical properties of these fractions, it was concluded that the upper band consisted of small membrane fragments, whereas the major band
G S, Inamine, R A, Niederman
openaire   +2 more sources

Light‐Harvesting Nanomaterials Based on Dyes for Energy Transfer and Amplified Biosensing

Advanced Materials, Volume 37, Issue 45, November 13, 2025.
Light harvesting (LH) in plants inspires researchers to develop artificial LH nanomaterials. Here, LH nanomaterials based on organic dyes are reviewed, considering fundamental challenges on aggregation‐caused quenching, excitation energy transfer, and exciton migration length.
Andrey S. Klymchenko, Deep Sekhar Biswas, Pascal Didier   +2 more
wiley   +1 more source

A Comprehensive Study of Biohopanoid Production in Alphaproteobacteria: Biosynthetic, Chemotaxonomical, and Geobiological Implications

Geobiology, Volume 23, Issue 6, November/December 2025.
ABSTRACT Bacteriohopanepolyol derivatives (BHPDs) and dia‐ and catagenetic products formed from these bacterial membrane modifiers are extensively used as biomarkers in molecular ecological and geoscience studies. Some BHPDs can be assigned to specific phylogenetic bacterial groups. With the vastly increasing availability of complete bacterial genomes,
Jaap S. Sinninghe Damsté, Michel Koenen, Vera Thiel, Nora Richter, Ellen C. Hopmans, Nicole J. Bale   +5 more
wiley   +1 more source

Effects of temperature on biofilm formation and resource recovery during anoxyphototrophic treatment of fuel‐synthesis wastewater

Journal of Chemical Technology &Biotechnology, Volume 100, Issue 9, Page 1848-1862, September 2025.
Abstract BACKGROUND Fuel‐synthesis wastewater (FSW), a byproduct of the Fischer‐Tropsch process, requiring efficient treatment and resource recovery strategies. This study aimed to optimize temperature conditions for purple non‐sulfur bacteria (PNSB) biofilm formation and bioproduct recovery while simultaneously treating FSW. Experiments were conducted
Sultan Shaikh, Soumia Gasmi, Adriaan Stephanus Luyt, Gordon McKay, Hamish Robert Mackey   +4 more
wiley   +1 more source

Melatonin‐Producing Microorganisms: A Rising Research Interest in Their Melatonin Biosynthesis and Effects on Crops

Journal of Pineal Research, Volume 77, Issue 5, September 2025.
ABSTRACT Melatonin is imperative in animals and plants, contributing to multiple physiological roles, and its microbial production could offer an eco‐friendly alternative to synthetic melatonin. However, detecting and characterizing it in microorganisms remains ongoing, and the biosynthesis pathways are still poorly explored.
Sang‐Mo Kang, Ashim Kumar Das, Da‐Sol Lee, Byung‐Wook Yun, Marino B. Arnao, In‐Jung Lee   +5 more
wiley   +1 more source

Functional relocation of the maize chloroplast atpB gene to the nucleus restores photosynthetic competence to a gene‐edited non‐photosynthetic mutant

Plant Biotechnology Journal, Volume 23, Issue 9, Page 3510-3523, September 2025.
Summary With the increasing food demands of a global population projected to reach 9.6 billion by 2050, there is an urgent need to increase crop productivity. Bioengineering approaches to boost crop yields include enhancing photosynthetic capacity, though relatively few efforts focus on C4 crop species despite their significant presence in agriculture.
Venkata RamanaRao Mangu, Kelsey Jenkins, Anna Pratt, Kara A. Boltz, Leila Pazouki, Alice Y. Hui, Muruganantham Mookkan, Jeffrey M. Staub   +7 more
wiley   +1 more source

Fortification of FeS Clusters Reshapes Anaerobic CO Dehydrogenase into an Air‐Viable Enzyme Through Multilayered Sealing of O2 Tunnels

Angewandte Chemie, Volume 137, Issue 33, August 11, 2025.
Fortification of FeS clusters in Ni─Fe CO dehydrogenase (Carboxydothermus hydrogenoformans) reshapes this anaerobic enzyme into an air‐viable variant through multilayered O2 tunnel sealing. The engineered enzyme retains structural integrity and catalytic efficiency in ambient air, offering a practical solution for industrial CO/CO2 bioconversion ...
Suk Min Kim, So Yeon Kong, Jingu Kang, Jeong Seok Ji, Sung Heuck Kang, Hye‐Jin Yoon, Hyunwoo Kim, Jungki Ryu, Hyung Ho Lee, Yong Hwan Kim   +9 more
wiley   +1 more source

Molecular basis for the distinct divalent cation requirement in the uridylylation of the signal transduction proteins GlnJ and GlnB from Rhodospirillum rubrum

BMC Microbiology, 2012
Background PII proteins have a fundamental role in the control of nitrogen metabolism in bacteria, through interactions with different PII targets, controlled by metabolite binding and post-translational modification, uridylylation in most organisms.
Teixeira Pedro, Dominguez-Martin Maria A, Nordlund Stefan   +2 more
doaj   +1 more source

The Methoxylated, Highly Conjugated C₄₀ Carotenoids, Spirilloxanthin and Anhydrorhodovibrin, Can Be Separated Using High Performance Liquid Chromatography with Safe and Environmentally Friendly Solvents

Metabolites, 2019
High performance liquid chromatography (HPLC) is a frequently used technique in carotenoid research. So far, however, little attention has been paid to the fact that many of the organic solvents used in HPLC separation of highly apolar C40 carotenoids ...
Caroline Autenrieth, Robin Ghosh
doaj   +1 more source

Phylogenomics and signature proteins for the alpha Proteobacteria and its main groups

BMC Microbiology, 2007
Background Alpha proteobacteria are one of the largest and most extensively studied groups within bacteria. However, for these bacteria as a whole and for all of its major subgroups (viz.
Mok Amy, Gupta Radhey S
doaj   +1 more source