Results 71 to 80 of about 7,120 (174)

Metabolic Regulation of Dimethylsulfoniopropionate Cleavage and Dimethyl Sulfide Production in Halomonas sp. D47

Advanced Science, Volume 13, Issue 23, 23 April 2026.
Dimethylsulfoniopropionate (DMSP) is a major marine organosulfur compound central to climate‐relevant dimethyl sulfide (DMS) production. In Halomonas sp. D47, DMSP catabolism is revealed to be coordinated by two transcriptional regulators, AcuR and AcuZ, which control gene expression by sensing DMSP and its metabolites.
Li‐Yuan Zheng, Wen‐Xin Jiang, Xiao‐Meng Sun, Li Liu, Zhao‐Jie Teng, Hou‐Qi Wang, Wen‐Jing Zhu, Chang Ge, Qi‐Long Qin, Ning‐Hua Liu, Hai‐Yan Cao, Hui‐Hui Fu, Chun‐Yang Li, Jonathan D. Todd, Xiu‐Lan Chen, Yu‐Zhong Zhang, Peng Wang   +16 more
wiley   +1 more source

Engineered biosynthesis of bacteriochlorophyll b in Rhodobacter sphaeroides [PDF]

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2014
Bacteriochlorophyll b has the most red-shifted absorbance maximum of all naturally occurring photopigments. It has a characteristic ethylidene group at the C8 position in place of the more common ethyl group, the product of a C8-vinyl reductase, which is carried by the majority of chlorophylls and bacteriochlorophylls used in photosynthesis.
Daniel P. Canniffe, C. Neil Hunter
openaire   +3 more sources

A Rhodobacter sphaeroides Protein Mechanistically Similar to Escherichia coli DksA Regulates Photosynthetic Growth

mBio, 2014
DksA is a global regulatory protein that, together with the alarmone ppGpp, is required for the “stringent response” to nutrient starvation in the gammaproteobacterium Escherichia coli and for more moderate shifts between growth conditions.
Christopher W. Lennon, Kimberly C. Lemmer, Jessica L. Irons, Max I. Sellman, Timothy J. Donohue, Richard L. Gourse, Wilma Ross   +6 more
doaj   +1 more source

Biomimetic Cell Membrane‐Coated MOFs System for Targeted Cancer Therapy

Advanced Science, Volume 13, Issue 21, 13 April 2026.
Biomimetic MOF‐based drug delivery nanoplatforms synthesized using liposomes or cell membranes as camouflage for multiple cancer therapeutics. ABSTRACT The integration of metal‐organic frameworks (MOFs) with cell membrane coatings has emerged as a revolutionary strategy to enhance the therapeutic efficacy of cancer nanomedicine.
Qilu Wu, Jia Song Deon Chon, Yuxiao Feng, Kang Liang, Shiming Li, Can Yang Zhang, Jun Ge   +6 more
wiley   +1 more source

The Lipoprotein and Peptidoglycan of Rhodobacter sphaeroides

Zeitschrift für Naturforschung C, 1989
The lipoprotein-peptidoglycan complex (rigid layer) from Rhodobacter sphaeroides was isolated. Treatment of the complex with N.O-diacetyl-muramidase cleaved off from the rigid layer the lipoprotein moiety with covalently bound peptidoglycan-fragments.
Daniela Woitzik, Roland Dierstein, Jürgen Weckesser   +2 more
openaire   +1 more source

Stringency in the absence of ppGpp accumulation in Rhodobacter sphaeroides [PDF]

Journal of Bacteriology, 1987
Leucine deprivation of either phototrophically or chemotrophically growing cells of Rhodobacter sphaeroides resulted in a restriction in the continued accumulations of cellular RNA, phospholipids, and protein. Phototrophically growing cells also displayed restrictions in the accumulations of cellular carotenoids and bacteriochlorophyll.
R, Acosta, D R, Lueking
openaire   +2 more sources

Pre‐, Pro‐, Post‐, and Synbiotics for Skin Health: A Narrative Review of Cosmetic and Dermatological Applications

Dermatological Reviews, Volume 7, Issue 2, April 2026.
ABSTRACT Background Prebiotics, probiotics, postbiotics, and synbiotics have been increasingly investigated and incorporated into cosmetic formulations to preserve or restore skin health, function, and esthetics. Objective To review biotics applications in cosmetology, discussing their concepts, general characteristics, and potential benefits and ...
Guilherme Carvalho Tavares da Silva, Kátia de Pádua Silva, Ana Carolina Furian da Silva, Larissa Pavanello, Gabriela de Moraes Saqui, Andréa Fernandes Eloy Costa da França, Gislaine Ricci Leonardi, Karina Cogo‐Müller   +7 more
wiley   +1 more source

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

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