Results 41 to 50 of about 15,601 (218)

Transcriptional analysis of pqqD and study of the regulation of pyrroloquinoline quinone biosynthesis in Methylobacterium extorquens AM1 [PDF]

open access: yes, 1995
Methanol dehydrogenase, the enzyme that oxidizes methanol to formaldehyde in gram-negative methylotrophs, contains the prosthetic group pyrroloquinoline quinone (PQQ).
Lidstrom, Mary E., Ramamoorthi, Roopa
core   +2 more sources

Pyrroloquinoline quinone drives ATP synthesis in vitro and in vivo and provides retinal ganglion cell neuroprotection

open access: yesActa Neuropathologica Communications, 2023
Retinal ganglion cells are highly metabolically active requiring strictly regulated metabolism and functional mitochondria to keep ATP levels in physiological range.
Alessio Canovai   +7 more
doaj   +1 more source

Pyrroloquinoline quinone increases the expression and activity of Sirt1 and -3 genes in HepG2 cells. [PDF]

open access: yes, 2015
Sirtuin (Sirt) 1 and Sirt 3 are nicotinamide adenine dinucleotide ((+))-dependent protein deacetylases that are important to a number of mitochondrial-related functions; thus, identification of sirtuin activators is important. Herein, we hypothesize that
Arguelles, Andrix   +6 more
core   +1 more source

An Efficient UPLC-MS/MS Method for the Determination of Pyrroloquinoline Quinone in Rat Plasma and Its Application to a Toxicokinetic Study

open access: yesMolecules, 2022
Pyrroloquinoline quinone (PQQ) is a powerful antioxidant coenzyme existing in diet, benefiting growth, development, cognition function, and the repair of damaged organs.
Qingmei Sun   +6 more
doaj   +1 more source

Determination of PQQ in quinoproteins with covalently bound cofactor and in PQQ‐derivatives [PDF]

open access: yesFEBS Letters, 1989
Application of the so‐called hexanol extraction procedure for PQQ determination, originally based on detachment of the cofactor from quinoproteins and conversion into PQQ‐5,5‐dihexyl ketal, leads in several cases to a number of products due to uncontrollable esterification.
van der Meer, Robert A.   +3 more
openaire   +1 more source

Mineral Phosphate Solubilization in Burkholderia tropica Involves an Inducible PQQ-Glucose Dehydrogenase [PDF]

open access: yes, 2016
Aims: The objective of this work was to provide knowledgement about the mechanism and regulation of the mineral phosphate solubilization in Burkholderia. tropica. To this end, the expression of the direct extracellular oxidative pathway in B. tropica was
Bernabeu, Pamela Romina   +6 more
core   +2 more sources

Electrochemical Immunosensors with PQQ-Decorated Carbon Nanotubes as Signal Labels for Electrocatalytic Oxidation of Tris(2-carboxyethyl)phosphine

open access: yesNanomaterials, 2021
Nanocatalysts are a promising alternative to natural enzymes as the signal labels of electrochemical biosensors. However, the surface modification of nanocatalysts and sensor electrodes with recognition elements and blockers may form a barrier to direct ...
Xiaohua Ma   +4 more
semanticscholar   +1 more source

On the intrinsic bottom content of the nucleon and its impact on heavy new physics at the LHC [PDF]

open access: yes, 2015
Heavy quark parton distribution functions (PDFs) play an important role in several Standard Model and New Physics processes. Most analyses rely on the assumption that the charm and bottom PDFs are generated perturbatively by gluon splitting and do not ...
Ježo, Tomáš   +6 more
core   +3 more sources

Determination of pyrroloquinoline quinone by enzymatic and LC-MS/MS methods to clarify its levels in foods.

open access: yesPLoS ONE, 2018
Pyrroloquinoline quinone (PQQ) is believed to be a new B vitamin-like compound, and PQQ supplementation has received attention as a possible treatment for diseases including dementia and diabetes. However, the distribution of PQQ in foods is unclear, due
Chikara Kato   +6 more
doaj   +1 more source

Pyrroloquinoline Quinone Inhibits Rotenone-Induced Microglia Inflammation by Enhancing Autophagy

open access: yesMolecules, 2020
Neuroinflammation is a feature common to neurodegenerative diseases, such as Parkinson’s disease (PD), which might be responsive to therapeutic intervention.
Qi Zhang   +6 more
doaj   +1 more source

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