Results 101 to 110 of about 26,580 (200)

Occurrence of squalene, di- and tetrahydrosqualenes, and vitamin MK8 in an extremely halophilic bacterium, Halobacterium cutirubrum

Journal of Lipid Research, 1969
The nonpolar (acetone-soluble) lipids of the extremely halophilic bacterium, Halobacterium cutirubrum, were found to consist of red carotenoid pigments (43%) and squalenes (48%) with a small amount of a vitamin K-type quinone. The squalenes were shown by
T.G. Tornabene, M. Kates, E. Gelpi, J. Oro   +3 more
doaj   +1 more source

Structural and mutational analysis of Methanosarcina mazei prenylated FMN synthase reveals the basis of its unique prenyl donor substrate specificity

The FEBS Journal, EarlyView.
Some prenylated flavin mononucleotide (prFMN) synthases exceptionally prefer dimethylallyl phosphate (DMAP) over dimethylallyl diphosphate (DMAPP), which is a common prenyl donor substrate for many prenyltransferases. Structural and mutagenic analyses of Methanosarcina mazei prFMN synthase, which prefers DMAP but can also accept DMAPP, elucidated its ...
Sou Fukuhara, Hideaki Unno, Soma Ishimine, Ryuhei Nagata, Tomokazu Ito, Hisashi Hemmi   +5 more
wiley   +1 more source

A comprehensive study on ferredoxin isoforms in the cyanobacterium Synechocystis sp. PCC 6803

The FEBS Journal, EarlyView.
Ferredoxins are small FeS cluster‐containing proteins that play a central role in distributing electrons within the cell. The cyanobacterium Synechocystis sp. PCC 6803 contains several ferredoxin isoforms and their biophysical properties (UV/Vis and EPR spectra, Em potential), expression patterns, and interactions with the electron donors photosystem I
Marko Boehm, Drazenka Svedruzic, Carolyn E. Lubner, Jens Appel, David W. Mulder, Effie C. Kisgeropoulos, Vanessa Hueren, Katharina Spengler, Vivek S. Bharadwaj, Zhanjun Guo, Anastasia E. Ledinina, Darja Deobald, Lorenz Adrian, Paul W. King, Kirstin Gutekunst   +14 more
wiley   +1 more source

Antibiotic fosmidomycin protects bacteria from cell wall perturbations by antagonizing oxidative damage-mediated cell lysis

Frontiers in Microbiology
Cell wall peptidoglycan is a defining component of bacterial cells, and its biosynthesis is a major target for medically important antibiotics. Recent studies have revealed that antibiotics can kill cells not only by their direct effects on wall ...
Yoshikazu Kawai, Jeff Errington
doaj   +1 more source

UbiB proteins mediate an ATP‐dependent decarboxylation step in bacterial ubiquinone biosynthesis

The FEBS Journal, EarlyView.
UbiB proteins are atypical protein kinase‐like enzymes essential for ubiquinone biosynthesis. Here, we demonstrate that bacterial UbiB proteins catalyze the O2‐dependent decarboxylation of ubiquinone precursors, a process linked to their ATPase activity.
Katayoun Kazemzadeh, Bruno Faivre, Sophie‐Carole Chobert, Martial Rey, Sophie S. Abby, Julie Michaud, Tuan‐Anh Dinh, Alexandre Chilin, Olivier Lerouxel, Marc Fontecave, Fabien Pierrel, Murielle Lombard, Ludovic Pelosi   +12 more
wiley   +1 more source

Delivering Sulfate to LNAPL Body for Enhanced Source Zone Depletion (ESZD)

Groundwater Monitoring &Remediation, EarlyView.
Abstract This field pilot study evaluates the feasibility of applying sulfate to a light non‐aqueous phase liquid (LNAPL) body for achieving enhanced source zone depletion (ESZD) at a refinery site. Two rounds of gypsum land application (GLA) delivered sulfate to an 8000 ft2 area encompassing LNAPL‐containing monitoring wells MW‐2 and MW‐3, while MW‐1 ...
Ravi Kolhatkar, Kanwartej S. Sra, Hong Yu   +2 more
wiley   +1 more source

A Photoactivatable Prenylated Cysteine Designed to Study Isoprenoid Recognition

, 2016
Protein prenylation, involving the alkylation of a specific C-terminal cysteine with a C15 or C20 isoprenoid unit, is an essential posttranslational modification required by most GTP-binding proteins for normal biological activity. Despite the ubiquitous
Conrad Raab (1813987), Tamara A. Kale (2981745), Dennis C. Dean (2981748), Nathan Yu (2981751), Mark D. Distefano (559344)   +4 more
core   +1 more source

Synergistic enhancement SPF from annatto seed oil and alkaline extracts in association with organic UV filters

International Journal of Cosmetic Science, EarlyView.
An SPF formulation incorporating Bixa orellana seed extracts and oils showed enhanced UV protection, highlighting the potential of natural bioactive compounds as effective boosters in photoprotective cosmetic products. Abstract Objective This study investigated the antioxidant activity of oil and alkaline aqueous extracts obtained from Bixa orellana ...
Ister Cordeiro Mariotini, Aliny Rodrigues de Jesus da Conceição, Rodrigo Rezende Kitagawa, Bernardo de Jesus Pavuna, Claudia Masrouah Jamal, Claudineia Aparecida Sales de Oliveira Pinto, André Rolim Baby, Fabiana Vieira Lima Solino Pessoa, Mariana Santos Pinheiro   +8 more
wiley   +1 more source

New insights into plant isoprenoid metabolism

, 2012
Isoprenoids are a hugely diverse family of compounds derived from the C5 precursors isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP). Although all free-living organisms synthesize isoprenoids, they are particularly abundant and diverse
Pablo Pulido, Manuel Rodriguez-Concepcion, Perello, Catalina, Catalina Perello, Rodriguez-Concepcion, Manuel, Pulido, Pablo   +5 more
core   +1 more source

Advances in Cytosolic dsRNA Sensing of Viral Infections

Immunology &Cell Biology, EarlyView.
Activation of cytosolic dsRNA sensors by viral infection generates multiple outcomes. dsRNA generated during viral infection, either of viral origin or from endogenous sources, can activate multiple cytosolic dsRNA sensors. Activation of PKR critically induces protein translation shutdown via phosphorylation of eukaryotic translation initiation factor ...
Sofia Maceratessi, Natalia G. Sampaio
wiley   +1 more source