Results 61 to 70 of about 68,312 (259)

C-072 CONSTRUYEN NANOBIOSENSOR PORTABLE PARA DETECTAR BACTERIAS EN ALIMENTOS

open access: yes, 2015
C-072 CONSTRUYEN NANOBIOSENSOR PORTABLE PARA DETECTAR BACTERIAS EN ALIMENTOSC-072 CONSTRUYEN NANOBIOSENSOR PORTABLE PARA DETECTAR BACTERIAS EN ...
Coordinación de Comunicación Social, Comunicados
core   +3 more sources

Bacterias-Biofilms y resistencia antimicrobiana [PDF]

open access: yes, 2015
Biofilms give to bacteria micro-environmental benefits; confers protection against antimicrobials. Bacteria have antibiotic resistance by conventional and unusual mechanisms leading to delayed wound healing, to increase recurrent chronic infections and ...
Caldas Arias, Liliana   +1 more
core   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Estudio del efecto del nitrato y el molibdato sobre la producción de ácido sulfhídrico (H2S) y sobre la población de bacterias sulfato reductoras asociadas a procesos de corrosión.

open access: yes, 2006
IP 8111-05-12419Este informe contiene las actividades realizadas en campo y laboratorio durante la ejecución de las tres fases del proyecto, ampliación del estado del arte el aislamiento, identificación y mantenimiento in vitro de bacterias ...

core  

Bacterias fitopatógenas [PDF]

open access: yes, 2021
Se expone sobre la definición, tipos, estructura, clasificación, reproducción, entre otros aspectos de las bacterias fitopatógenas.Universidad de Costa Rica/[]/UCR/Costa RicaUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias ...
Monge Pérez, José Eladio
core  

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

Aislamiento de bacterias ruminales degradadoras de celulosa [PDF]

open access: yes, 2011
El presente trabajo de investigación consistió en aislar e identificar bacterias con actividad celulolítica, a partir del líquido ruminal de bovinos. Las bacterias celulolíticas investigadas, poseen la capacidad para degradar carbohidratos estructurales,
Guerrero Calle, Ana Carolina
core  

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