Results 61 to 70 of about 83,469 (387)

The TriForC database : a comprehensive up-to-date resource of plant triterpene biosynthesis [PDF]

open access: yes, 2018
Triterpenes constitute a large and important class of plant natural products with diverse structures and functions. Their biological roles range from membrane structural components over plant hormones to specialized plant defence compounds.
Bak, Soren   +8 more
core   +2 more sources

Tolerance of Plant Monoterpenes and Diterpene Acids by Four Species of Lymantriidae (Lepidoptera) Exhibiting a Range of Feeding Specificities [PDF]

open access: yes, 2018
Lymantriidae (Lepidoptera) is a family of leaf-feeding insects that includes some of the most damaging forest pests worldwide. Species within this family vary widely in feeding specificity.
Powell, Jaimie S, Raffa, Kenneth F
core   +3 more sources

Gromomycins: An Unprecedented Class of Triterpene Antibiotics Produced by a Novel Biosynthetic Pathway

open access: yesAngewandte Chemie, EarlyView.
Gromomycins represent a novel class of pentacyclic triterpene antibiotics with a unique biosynthetic pathway independent of the squalene route. These compounds exhibit potent activity against drug‐resistant Gram‐positive pathogens, including MRSA, and their unprecedented cyclization mechanism provides new insight into bacterial triterpene biosynthesis.
Stepan Tistechok   +11 more
wiley   +2 more sources

Transcriptome pathways unique to dehydration tolerant relatives of modern wheat [PDF]

open access: yes, 2009
Among abiotic stressors, drought is a major factor responsible for dramatic yield loss in agriculture. In order to reveal differences in global expression profiles of drought tolerant and sensitive wild emmer wheat genotypes, a previously deployed shock ...
AN Olsen   +53 more
core   +1 more source

Terpene synthases in disguise: enzymology, structure, and opportunities of non-canonical terpene synthases.

open access: yesNatural product reports (Print), 2020
Covering: up to July 2019Terpene synthases (TSs) are responsible for generating much of the structural diversity found in the superfamily of terpenoid natural products. These elegant enzymes mediate complex carbocation-based cyclization and rearrangement
J. Rudolf, Chin-Yuan Chang
semanticscholar   +1 more source

Silylation of Aryl and Alkyl Chlorides by a Seven‐Membered Dialkoxysilyl Group Si(pan)Me via an In Situ Generated Silylpotassium

open access: yesAngewandte Chemie, EarlyView.
This study reveals a facile silylation protocol that enables the delivery of a stable and activatable dioxasilepanyl group, Si(pan)Me, to aryl and alkyl chlorides. Of note is the X‐ray structure of 18‐C‐6·K–Si(pan)Me, which elucidates a pivotal silylpotassium intermediate.
Kenshiro Hitoshio   +2 more
wiley   +2 more sources

Origins and composition of fine atmospheric carbonaceous aerosol in the Sierra Nevada Mountains, California [PDF]

open access: yes, 2011
In this paper we report chemically resolved measurements of organic aerosol (OA) and related tracers during the Biosphere Effects on Aerosols and Photochemistry Experiment (BEARPEX) at the Blodgett Forest Research Station, California from 15 August–10 ...
Bench, G.   +16 more
core   +2 more sources

Decoding the Chemical Language of Ribosomally Synthesized and Post‐Translationally Modified Peptides from the Untapped Archaea Domain

open access: yesAngewandte Chemie, EarlyView.
Secondary metabolites (SMs) are essential across all life domains, yet those originating from the Archaea domain remain poorly understood. Here, the systematic genome mining and the pioneering heterologous expression of archaeal SMs have revealed the chemical landscape of archaeal lanthipeptides, showing both canonical and non‐canonical forms.
Zhi‐Man Song   +13 more
wiley   +2 more sources

Further Biochemical Profiling of Hypholoma fasciculare Metabolome Reveals Its Chemogenetic Diversity

open access: yesFrontiers in Bioengineering and Biotechnology, 2021
Natural products with novel chemistry are urgently needed to battle the continued increase in microbial drug resistance. Mushroom-forming fungi are underutilized as a source of novel antibiotics in the literature due to their challenging culture ...
Suhad A. A. Al-Salihi   +6 more
doaj   +1 more source

Oleoresin defenses in conifers: chemical diversity, terpene synthases, limitations of oleoresin defense under climate change.

open access: yesNew Phytologist, 2019
Conifers have evolved complex oleoresin terpene defenses against herbivores and pathogens. In co-evolved bark beetles, conifer terpenes also serve chemo-ecological functions as pheromone precursors, chemical barcodes for host identification, or nutrients
J. M. Celedon, J. Bohlmann
semanticscholar   +1 more source

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