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Hector Barrabin

Researcher at Federal University of Rio de Janeiro

Publications -  47
Citations -  694

Hector Barrabin is an academic researcher from Federal University of Rio de Janeiro. The author has contributed to research in topics: ATPase & Na+/K+-ATPase. The author has an hindex of 14, co-authored 47 publications receiving 662 citations.

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Adenosinetriphosphatase site stoichiometry in sarcoplasmic reticulum vesicles and purified enzyme.

TL;DR: The stoichiometry of phosphorylation (catalytic) sites in sarcoplasmic reticulum vesicles and SR ATPase purified by differential solubilization with deoxycholate was found to be 4.77 +/-0.4 and 6.05 +/- 0.18 nmol/mg of protein, respectively, whenosphorylation was carried out under conditions permitting 32P labeling of nearly all sites.
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Visualizing the 3D Architecture of Multiple Erythrocytes Infected with Plasmodium at Nanoscale by Focused Ion Beam-Scanning Electron Microscopy

TL;DR: The results show the complex 3D organization of Plasmodium and infected erythrocyte, and demonstrate the contribution of FIB-SEM for the obtainment of statistical data for an accurate interpretation of complex biological structures.
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Tomatidine promotes the inhibition of 24-alkylated sterol biosynthesis and mitochondrial dysfunction in Leishmania amazonensis promastigotes.

TL;DR: Tomatidine inhibited parasite growth in a dose-dependent manner and was consistent with an inhibition of 24-sterol methyltransferase, an important enzyme responsible for the methylation of sterols at the 24 position, which is an essential step in the production of ergosterol and other 24-methyl sterols.
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The gamma subunit of Na+, K+-ATPase: role on ATPase activity and regulatory phosphorylation by PKA.

TL;DR: In this article, the effects of gamma subunit on Na+, K+-ATPase were dose-dependent and pre-incubation-dependent, and they showed that PKA phosphorylation increased the capacity to stimulate ATP hydrolysis.