Results 31 to 40 of about 22,892 (210)

Great metalloclusters in enzymology [PDF]

open access: yes, 2002
Metallocluster-containing enzymes catalyze some of the most basic redox transformations in the biosphere. The reactions catalyzed by these enzymes typically involve small molecules such as N2, CO, and H2 that are used to generate both chemical building ...
Rees, Douglas C.
core   +1 more source

The ins and outs of metal homeostasis by the root nodule actinobacterium Frankia [PDF]

open access: yes, 2014
Background: Frankia are actinobacteria that form a symbiotic nitrogen-fixing association with actinorhizal plants, and play a significant role in actinorhizal plant colonization of metal contaminated areas.
Furnholm, Teal R., Tisa, Louis S.
core   +2 more sources

Crystal structures of the NO sensor NsrR reveal how its iron-sulfur cluster modulates DNA binding

open access: yesNature Communications, 2017
NsrR is a bacterial transcriptional regulator that acts as a nitric oxide (NO) sensor. Here, the authors present the crystal structure of NsrR, which reveals an unusual Fe-S cluster coordination and explains how NO exposure leads to the degradation of ...
Anne Volbeda   +7 more
doaj   +1 more source

In silico Study of Iron, Zinc and Copper Binding Proteins of Pseudomonas syringae pv. lapsa: Emphasis on Secreted Metalloproteins

open access: yesFrontiers in Microbiology, 2018
The phytopathogenic bacteria, Pseudomonas syringae pv. lapsa (P. syringae pv. lapsa) infects the staple food crop wheat. Metalloproteins play important roles in plant-pathogen interactions. Hence, the present work is aimed to predict and analyze the iron
Ankita Sharma   +2 more
doaj   +1 more source

NMR of Paramagnetic Proteins: 13C Derived Paramagnetic Relaxation Enhancements Are an Additional Source of Structural Information in Solution

open access: yesMagnetochemistry, 2023
In paramagnetic metalloproteins, longitudinal relaxation rates of 13C′ and 13Cα nuclei can be measured using 13C detected experiments and converted into electron spin-nuclear spin distance restraints, also known as Paramagnetic Relaxation Enhancement ...
Leonardo Querci   +6 more
doaj   +1 more source

From Zn to Mn: the study of novel manganese-binding groups in the search for new drugs against tuberculosis. [PDF]

open access: yes, 2011
In most eubacteria, apicomplexans, and most plants, including the causal agents for diseases such as malaria, leprosy, and tuberculosis, the methylerythritol phosphate pathway is the route for the biosynthesis of the C(5) precursors to the essential ...
de Oliveira, César Augusto F   +3 more
core   +2 more sources

Nitrene Transfer Catalyzed by a Non-Heme Iron Enzyme and Enhanced by Non-Native Small-Molecule Cofactors [PDF]

open access: yes, 2019
Transition-metal catalysis is a powerful tool for the construction of chemical bonds. Here we show that a non-heme iron enzyme can catalyze olefin aziridination and nitrene C–H insertion, and that these activities can be improved by directed evolution ...
Arnold, Frances H.   +3 more
core   +1 more source

The Binding Mode of the Sonic Hedgehog Inhibitor Robotnikinin, a Combined Docking and QM/MM MD Study

open access: yesFrontiers in Chemistry, 2017
Erroneous activation of the Hedgehog pathway has been linked to a great amount of cancerous diseases and therefore a large number of studies aiming at its inhibition have been carried out. One leverage point for novel therapeutic strategies targeting the
Manuel Hitzenberger   +3 more
doaj   +1 more source

Automatically Constructed Neural Network Potentials for Molecular Dynamics Simulation of Zinc Proteins

open access: yesFrontiers in Chemistry, 2021
The development of accurate and efficient potential energy functions for the molecular dynamics simulation of metalloproteins has long been a great challenge for the theoretical chemistry community.
Mingyuan Xu   +6 more
doaj   +1 more source

Reactions of HNO with Metal Porphyrins: Underscoring the Biological Relevance of HNO [PDF]

open access: yes, 2014
Azanone (1 HNO, nitroxyl) shows interesting yet poorly understood chemical and biological effects. HNO has some overlapping properties with nitric oxide (NO), sharing its biological reactivity toward heme proteins, thiols, and oxygen.
Bikiel, Damian Ezequiel   +4 more
core   +1 more source

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