Results 31 to 40 of about 22,558 (250)

How Theoretical Evaluations Can Generate Guidelines for Designing/Engineering Metalloproteins with Desired Metal Affinity and Selectivity

open access: yesMolecules, 2022
Almost half of all known proteins contain metal co-factors. Crucial for the flawless performance of a metalloprotein is the selection with high fidelity of the cognate metal cation from the surrounding biological fluids.
Todor Dudev
doaj   +1 more source

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

Cupin‐Type Dimethylsulfoniopropionate Lyase from Pelagibacter ubique (DddKPu) Catalyzes Aza‐Michael Addition of Primary and Secondary Amines to Acrylic Acid

open access: yesAngewandte Chemie, EarlyView.
A dimethylsulfoniopropionate lyase (DddK) was identified as an efficient aza‐Michaelase for the addition of amines to acrylate. Screening 74 amines with wild‐type DddK and its W26G variant yielded N‐substituted and N,N‐disubstituted β‐amino acids in 30%–93% isolated yield.
Diletta Arceri   +5 more
wiley   +2 more sources

Towards the spatial resolution of metalloprotein charge states by detailed modeling of XFEL crystallographic diffraction. [PDF]

open access: yes, 2020
Oxidation states of individual metal atoms within a metalloprotein can be assigned by examining X-ray absorption edges, which shift to higher energy for progressively more positive valence numbers.
Holton, James M   +3 more
core   +2 more sources

The Stereochemical Basis of the Genetic Code and the (Mostly) Autotrophic Origin of Life

open access: yesLife, 2014
Spark-tube experiments and analysis of meteorite contents have led to the widespread notion that abiotic organic molecules were the first life components.
Juan C. Fontecilla-Camps
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

Decorin Is a Zn2+ Metalloprotein [PDF]

open access: yesJournal of Biological Chemistry, 1999
Decorin is ubiquitously distributed in the extracellular matrix of mammals and a member of the proteoglycan family characterized by a core protein dominated by leucine-rich repeat motifs. We show here that decorin extracted from bovine tissues under denaturing conditions or produced in recombinant "native" form by cultured mammalian cells has a high ...
Magnus Höök   +4 more
openaire   +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

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