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ATP Production - DOAJ

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Last Updated: 10 July 2022

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Saturated fatty acids accelerate linear motility through mitochondrial ATP production in bull sperm

Using gas chromatography/u2010mass spectrometry, the kinetic shifts in FA levels in sperm were discovered. Based on the fluorescence intensity of JCu20101 staining and the oxygen consumption rate, mitochondrial activity of sperm thawed in media containing LM or FAs was determined. Sperm linear motility was noticeably improved after thawing in media with LM and FA. Notably, our report showed that frozen bovine sperm possessed FA transporters in the midpiece where the fluorescence signals were detected after fluorescence therapy with fluorescence tagged FA. Conclusions Sperm linear motility is aided by FAs in the thawing media used for frozen bovine sperm.

Source link: https://doi.org/10.1002/rmb2.12381


Characterization of the phosphotransacetylase-acetate kinase pathway for ATP production in Porphyromonas gingivalis

Acetyl phosphate is predominantly made from acetyl coenzyme A by phosphotylase, and subsequent reaction with ADP, catalyzed by acetate kinase, yields ATP. The process of ATP production in Porphyromonas gingivalis is unclear. Pta and Ack from P. gingivalis ATCC 33277 were enzymatically and structurally characterized, with Pta and Ack enzymatically and structurally characterized. Ack proceeds with ATP creation by a sequential process, which leads to ATP formation by Ack. Inactivation of pta or ack in P. gingivalis by homologous recombination was only possible when the inactivated gene was expressed in trans. Insights into the Pta-Ack pathway indicated herein may be helpful in determining the electricity purchase in P. gingivalis.

Source link: https://doi.org/10.1080/20002297.2019.1588086


Crizotinib Shows Antibacterial Activity against Gram-Positive Bacteria by Reducing ATP Production and Targeting the CTP Synthase PyrG

Here, we screened an FDA-approved small-molecule library and discovered that crizotinib has a high antimicrobial activity against Gram-positive bacteria. In an animal model, Crizotinib was shown to raise the survival rate of mice infected with bacteria and reduce pulmonary inflammation production. Gram-positive bacteria, on the other hand, had a low tendency to develop resistance to crizotinib. According to a drug affinity sensitive target stability report, crizotinib targets PyrG, which then disrupts pyrimidine metabolism and ultimately reduces DNA synthesis. According to a new molecular dynamics report, crizotinib binding occurs in close proximity to PyrG's ATP binding pocket, leading to the CTP synthase's loss of function. Crizotinib, a promising antimicrobial agent, makes a novel choice for the production of treatment for Gram-positive infections. Crizotinib was discovered to disrupt pyrimidine metabolism by attacking the CTP synthase PyrG, thereby reducing DNA production.

Source link: https://doi.org/10.1128/spectrum.00884-22


Proline Oxidation Supports Mitochondrial ATP Production When Complex I Is Inhibited

Proline dehydrogenase mitochondria by oxidation of proline to pyrroline-5-carboxylate leads to electron transfer to ubiquinone in mitochondria that have expressed proline dehydrogenase. Proline oxidation was determined in isolated mitochondria of several mouse tissues by using the NextGen-O2k. Proline catabolism produced such high membrane potential that was able to keep the F 1 F O ATPase operation in the forward mode. This was observed in CI-inhibited mouse liver and kidney mitochondria that had elevated amounts of proline oxidation and ProDH activity. Excess glutamate, on the other hand, was unable to replicate the proline effect, implying that processes downstream of the glutamate conversion from proline were involved. All proline effects were reversed by ProDH inhibitors tetrahydro-2-furoic acid and, to a lesser extent, S-5-oxo-2-tetrahydrofurylic acid. ProDH-directed proline catabolism could produce sufficient CIII and CIV proton pumping, thus supporting ATP production by the F 1 F O -ATPase even under CI inhibition.

Source link: https://doi.org/10.3390/ijms23095111


AMPK Signaling Regulates Mitophagy and Mitochondrial ATP Production in Human Trophoblast Cell Line BeWo

Introduction: Accumulating evidence indicates that mitochondrial structural and functional abnormalities are present in human placentas affected by pregnancy-related illnesses, but trophoblast cell cultures/placental tissue have not been investigated, according to authors. Results: The activation of AMPK signaling activation stimulates autophagy by increasing LC3II and SQSTM1 protein abundance in whole cell lysates and mitochondrial fractions, but not BNIP3L-mediated pathways, according to a study by the author of autophagy flux assay. AKD reported the stimulation of AMPK signaling on mitophagy by decreasing the number of LC3II, SQSTM1, PRKN, and FUNDC1 proteins, but the number of BNIP3/BNIP3L proteins increased. In summary, AMPK signaling promotes mitophagy in human trophoblast cells via PRKN and FUNDC1-mediated mitophagy pathways, and AMPK-regulated mitophagy contributes to mitochondrial membrane potential and mitochondrial ATP production.

Source link: https://doi.org/10.31083/j.fbl2704118


Differential Mechanism of ATP Production Occurs in Response to Succinylacetone in Colon Cancer Cells

Our aim was to establish the potential of succinylacetone to inhibit mitochondrial function, thereby reducing cancer cell proliferation. Mitochondria of HT29 cells had swollen, indicating injury, but mitochondria in HCT116 cells had a reduced area. Complex III, which is made up of the mitochondrial ETCs in HT29 cells, was decreased. In HT29 cells, removal of reactive oxygen species was upregulated in HT29 cells but not in HCT116 cells, indicating that a defense mechanism against ROS was activated in HT29 cells. Our analysis demonstrated a novel mechanism in response to SA in colon cancer cells in a multinational manner.

Source link: https://doi.org/10.3390/molecules24193575


Inhibition of Mitochondrial Complex I Leads to Decreased Motility and Membrane Integrity Related to Increased Hydrogen Peroxide and Reduced ATP Production, while the Inhibition of Glycolysis Has Less Impact on Sperm Motility.

However, no reports regarding mitochondrial ROS production in stallion spermatozoa are available. Specific inhibitors of complex I and III were used to shed light on the role of the mitochondrial electron transport chain in the origins of oxidative stress in stallion spermatozoa's oxidative stress. After staining with CellRox deep red, staining with CellRox reduced the production of reactive oxygen species as measured by flow cytometry. This finding shows that the CellRox probe mainly discovers superoxide and that superoxide production may reveal intense mitochondrial activity rather than oxidative stress. Increased hydrogen peroxide production was due to the inhibition of complex I. Between sperm motility, speed, and membrane integrity, as well as the manufacture of reactive oxygen species, poor and moderate positive correlations were found between sperm motility, velocity, and membrane integrity. These findings also reveal that increased hydrogen peroxide generation in the mitochondria is a factor involved in stallion sperm senescence.

Source link: https://doi.org/10.1371/journal.pone.0138777


Modulation of Potassium Channel Activity in the Balance of ROS and ATP Production by Durum Wheat Mitochondria - An amazing defence tool against hyperosmotic stress

The existence of a mitochondrial potassium channel in plants was first revealed about fifteen years ago in durum wheat as an ATP-dependent potassium channel. Interestingly, channel activation elevates electrophoretic potassium uptake across the inner membrane into the matrix, hence collapsing membrane potential, the key component of plant mitochondrial proponents, and plant mitochondria cooperation between PmitoKATP and the K+/H+ antiporter permits a potassium cycle with a maximum of u0394 ph. Interestingly, the u0394u03a8 'bumbled match with an active control of mitochondrial reactive oxygen species production. PmitoKATP's failure, on the other hand, was unexpectedly found to not interfere with ATP synthesis by oxidative phosphorylation. This may be due to a controlled shutdown of PmitoKATP due to ATP inhibition; this disruption to the channel's operation may lead to the absence of the bulk phase u0394p, but it could also maintain a non-classically detectable local driving force for ATP synthesis.

Source link: https://doi.org/10.3389/fpls.2015.01072


Cytosolic NUAK1 Enhances ATP Production by Maintaining Proper Glycolysis and Mitochondrial Function in Cancer Cells

According to NUAK1, it was linked to metastasis because it promotes cell migration and invasion in various cancer cells. In addition, NUAK1 promotes cancer cell survival under metabolic strain and maintains ATP levels in hepatocarcinoma cells, indicating a role in cancer energy metabolism. We found that cytosolic NUAK1 rises ATP levels, which correlates with increased mitochondrial respiration, which may have exacerbated mitochondrial respiration, raising mitochondrial respiration. We also found that cytosolic NUAK1 plays a role in mitochondrial function regulation in cancer cells. In addition, our results showed that cytosolic NUAK1 increases the glycolytic capacity of cancer cells under mitochondrial inhibition. Nuclear NUAK1 appears to be involved in the metabolic transition to glycolysis. Our findings indicate that cytosolic NUAK1 plays a role in mitochondrial ATP production and maintenance of proper glycolysis in cancer cells. NUAK1's tumour progression has been shown to be a potential treatment for cancer progression and its association with poor patient prognosis in several cancers.

Source link: https://doi.org/10.3389/fonc.2020.01123

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions