scispace - formally typeset
Search or ask a question
Institution

Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto

Education
About: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto is a based out in . It is known for research contribution in the topics: Population & Genus. The organization has 2143 authors who have published 3674 publications receiving 71071 citations. The organization is also known as: FFCLRP & FFCLRP-USP.


Papers
More filters
Journal ArticleDOI
TL;DR: In this article, the effect of initial substrate concentration on COD consumption, pH, and H 2 production during cassava processing wastewater fermentation by Clostridium acetobutylicum ATCC 824.

91 citations

Journal ArticleDOI
TL;DR: In this article, aluminium-doped zinc oxide films were prepared through an alcoholic sol-gel route using Zn(CH3COO)2·· 2H2O as non-alcoxide precursor.

91 citations

Journal ArticleDOI
TL;DR: In this paper, the authors explored the hexamerin genes found in the honey bee genome by exploring their structural characteristics, expression profiles, evolution, and functions in the life cycle of workers, drones and queens.
Abstract: Background Hexamerins are hemocyanin-derived proteins that have lost the ability to bind copper ions and transport oxygen; instead, they became storage proteins. The current study aimed to broaden our knowledge on the hexamerin genes found in the honey bee genome by exploring their structural characteristics, expression profiles, evolution, and functions in the life cycle of workers, drones and queens.

91 citations

Journal ArticleDOI
TL;DR: The data confirm the recent invasion of the freshwater biotope by M. olfersii and suggest that (Na+, K+)-ATPase activity may be regulated by the Na+ concentration of the external medium.
Abstract: To better understand the adaptive strategies that led to freshwater invasion by hyper-regulating Crustacea, we prepared a microsomal (Na+, K+)-ATPase by differential centrifugation of a gill homogenate from the freshwater shrimp Macrobrachium olfersii. Sucrose gradient centrifugation revealed a light fraction containing most of the (Na+, K+)-ATPase activity, contaminated with other ATPases, and a heavy fraction containing negligible (Na+, K+)-ATPase activity. Western blotting showed that M. olfersii gill contains a single alpha-subunit isoform of about 110 kDa. The (Na+, K+)-ATPase hydrolyzed ATP with Michaelis Menten kinetics with K5, = 165+/-5 microM and Vmax = 686.1+/-24.7 U mg(-1). Stimulation by potassium (K0.5 = 2.4+/-0.1 mM) and magnesium ions (K0.5 = 0.76+/-0.03 mM) also obeyed Michaelis-Menten kinetics, while that by sodium ions (K0.5 = 6.0+/-0.2 mM) exhibited site site interactions (n = 1.6). Ouabain (K0.5 = 61.6+/-2.8 microM) and vanadate (K0.5 = 3.2+/-0.1 microM) inhibited up to 70% of the total ATPase activity, while thapsigargin and ethacrynic acid did not affect activity. The remaining 30% activity was inhibited by oligomycin, sodium azide and bafilomycin A. These data suggest that the (Na+, K+)-ATPase corresponds to about 70% of the total ATPase activity; the remaining 30%, i.e. the ouabain-insensitive ATPase activity, apparently correspond to F0F1- and V-ATPases, but not Ca-stimulated and Na- or K-stimulated ATPases. The data confirm the recent invasion of the freshwater biotope by M. olfersii and suggest that (Na+, K+)-ATPase activity may be regulated by the Na+ concentration of the external medium.

91 citations


Authors

Showing all 2195 results

Network Information
Related Institutions (5)
Federal University of Rio de Janeiro
89.1K papers, 1.5M citations

90% related

State University of Campinas
104.6K papers, 1.8M citations

89% related

University of São Paulo
272.3K papers, 5.1M citations

89% related

Academy of Sciences of the Czech Republic
71K papers, 1.8M citations

88% related

University of Montpellier
53.8K papers, 1.6M citations

88% related

Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20233
202291
2021245
2020248
2019234
2018245