Results 51 to 60 of about 2,144 (137)

In Hyphomicrobium denitrificans Two Related Sulfane‐Sulfur Responsive Transcriptional Repressors Regulate Thiosulfate Oxidation and Have a Deep Impact on Nitrate Respiration and Anaerobic Biosyntheses

open access: yesMolecular Microbiology, Volume 124, Issue 3, Page 204-220, September 2025.
In Hyphomicrobium denitrificans, the use of thiosulfate as a supplemental electron donor is regulated by two homologous sulfane‐sulfur responsive ArsR‐type transcriptional repressors, sHdrR and SoxR, that act cooperatively. Remarkably, the regulation by sHdrR/SoxR extends far beyond sulfur oxidation and deeply affects anaerobic metabolism, particularly
Jingjing Li   +3 more
wiley   +1 more source

Identification of a l‐Threonine‐Utilizing Hydrazine Synthetase for Thrazarine Biosynthesis in Streptomyces coerulescens MH802‐fF5

open access: yesChemBioChem, Volume 26, Issue 15, August 22, 2025.
A putative thrazarine biosynthetic gene cluster is discovered in the genome sequence of Streptomyces coerulescens MH802‐fF5. In vivo and in vitro analyses of ThzN, a hydrazine synthetase with cupin and methionyl‐tRNA synthetase‐like domains encoded in the cluster, showed that it synthesizes a key intermediate of thrazarine by catalyzing condensation ...
Yusuke Shikai   +4 more
wiley   +1 more source

Characterization of C-S Lyase from C. diphtheriae [PDF]

open access: yes, 2013
The emergence of antibiotic resistance in microbial pathogens requires the identification of new antibacterial drugs. The biosynthesis of methionine is an attractive target because of its central importance in cellular metabolism.
Allegrini, Alessandra   +4 more
core   +1 more source

In vivo evidence for glycyl radical insertion into a catalytically inactive variant of pyruvate formate‐lyase

open access: yesFEBS Letters, Volume 599, Issue 15, Page 2201-2209, August 2025.
Dimeric pyruvate formate‐lyase cleaves pyruvate using a radical‐based mechanism. G734 serves as a radical storage location, and the radical is transferred to the catalytic C419 residue. Mutation of the C418‐C419 pair causes loss of enzyme activity, but does not impede radical introduction onto G734. Therefore, cis‐ but not trans‐radical transfer occurs
Michelle Kammel   +2 more
wiley   +1 more source

Expanding the Biocatalytic Toolbox of C-N Lyases:Rational Engineering and Enzyme Discovery [PDF]

open access: yes
With the growing demand for nonhazardous and sustainable alternatives for chemical catalysis, interest in biocatalysts has grown significantly over the past decades. The enzyme ethylenediamine-N,N’-succinic acid (EDDS) lyase from Chelativorans sp.
Bothof, Laura
core   +1 more source

An Enzymatic Prodrug‐like Route to Thio and Selenoamides [PDF]

open access: yes
6‐Thioguanine (6TG) is a clinically used antitumor agent that was rationally designed as a DNA‐targeting antimetabolite, but it also occurs naturally. 6TG is a critical virulence factor produced by Erwinia amylovorans , a notorious plant pathogen that ...
Dunbar, Kyle L.   +3 more
core   +1 more source

COMPARATIVE APPROACHES FOR PLANT GENOMES: UNRAVELING "INTRA" AND "INTER" SPECIES RELATIONSHIPS FROM PRELIMINARY GENE ANNOTATIONS [PDF]

open access: yes, 2016
Comparative genomics studies the differences and similarities between different species, to transfer biological information from model organisms to newly sequenced genomes, and to understand the evolutionary forces that drive changes in genomic features ...
Ambrosino, Luca
core  

Bacterial hemoglobins and flavohemoglobins: versatile proteins and their impact on microbiology and biotechnology [PDF]

open access: yes, 2017
In response to oxygen limitation or oxidative and nitrosative stress, bacteria express three kinds of hemoglobin proteins: truncated hemoglobins (tr Hbs), hemoglobins (Hbs) and flavohemoglobins (flavo Hbs).
Frey, Alexander D., Kallio, Pauli T.
core  

Quantitative and evolutionary global analysis of enzyme reaction mechanisms [PDF]

open access: yes, 2015
The most widely used classification system describing enzyme-catalysed reactions is the Enzyme Commission (EC) number. Understanding enzyme function is important for both fundamental scientific and pharmaceutical reasons.
Nath, Neetika
core  

Function and redox state of mitochondrial localized cysteine-rich proteins important in the assembly of cytochrome \u3ci\u3ec\u3c/i\u3e oxidase [PDF]

open access: yes, 2008
The cytochrome c oxidase (CcO) complex of the mitochondrial respiratory chain exists within the mitochondrial inner membrane (IM). The biogenesis of the complex is a multi-faceted process requiring multiple assembly factors that function on both faces of
Khalimonchuk, Oleh, Winge, Dennis R.
core   +1 more source

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