Konrad 2012 PLoS One: Difference between revisions

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|abstract=Mitochondria from the embryos of brine shrimp (''Artemia franciscana'') do not undergo Ca<sup>2+</sup>-induced permeability transition in the presence of a profound Ca<sup>2+</sup> uptake capacity. Furthermore, this crustacean is the only organism known to exhibit bongkrekate-insensitive mitochondrial adenine nucleotide exchange, prompting the conjecture that refractoriness to bongkrekate and absence of Ca<sup>2+</sup>-induced permeability transition are somehow related phenomena. Here we report that mitochondria isolated from two other crustaceans, brown shrimp (''Crangon crangon'') and common prawn (''Palaemon serratus'') exhibited bongkrekate-sensitive mitochondrial adenine nucleotide transport, but lacked a Ca<sup>2+</sup>-induced permeability transition. Ca<sup>2+</sup> uptake capacity was robust in the absence of adenine nucleotides in both crustaceans, unaffected by either bongkrekate or cyclosporin A. Transmission electron microscopy images of Ca<sup>2+</sup>-loaded mitochondria showed needle-like formations of electron-dense material strikingly similar to those observed in mitochondria from the hepatopancreas of blue crab (''Callinectes sapidus'') and the embryos of ''Artemia franciscana''. Alignment analysis of the partial coding sequences of the adenine nucleotide translocase (ANT) expressed in ''Crangon crangon'' and ''Palaemon serratus'' versus the complete sequence expressed in ''Artemia franciscana'' reappraised the possibility of the 208-214 amino acid region for conferring sensitivity to bongkrekate. However, our findings suggest that the ability to undergo Ca<sup>2+</sup>-induced mitochondrial permeability transition and the sensitivity of adenine nucleotide translocase to bongkrekate are not necessarily related phenomena.
|abstract=Mitochondria from the embryos of brine shrimp (''Artemia franciscana'') do not undergo Ca<sup>2+</sup>-induced permeability transition in the presence of a profound Ca<sup>2+</sup> uptake capacity. Furthermore, this crustacean is the only organism known to exhibit bongkrekate-insensitive mitochondrial adenine nucleotide exchange, prompting the conjecture that refractoriness to bongkrekate and absence of Ca<sup>2+</sup>-induced permeability transition are somehow related phenomena. Here we report that mitochondria isolated from two other crustaceans, brown shrimp (''Crangon crangon'') and common prawn (''Palaemon serratus'') exhibited bongkrekate-sensitive mitochondrial adenine nucleotide transport, but lacked a Ca<sup>2+</sup>-induced permeability transition. Ca<sup>2+</sup> uptake capacity was robust in the absence of adenine nucleotides in both crustaceans, unaffected by either bongkrekate or cyclosporin A. Transmission electron microscopy images of Ca<sup>2+</sup>-loaded mitochondria showed needle-like formations of electron-dense material strikingly similar to those observed in mitochondria from the hepatopancreas of blue crab (''Callinectes sapidus'') and the embryos of ''Artemia franciscana''. Alignment analysis of the partial coding sequences of the adenine nucleotide translocase (ANT) expressed in ''Crangon crangon'' and ''Palaemon serratus'' versus the complete sequence expressed in ''Artemia franciscana'' reappraised the possibility of the 208-214 amino acid region for conferring sensitivity to bongkrekate. However, our findings suggest that the ability to undergo Ca<sup>2+</sup>-induced mitochondrial permeability transition and the sensitivity of adenine nucleotide translocase to bongkrekate are not necessarily related phenomena.
|keywords=Crustaceans, permeability transition pore, cyclosporin A,
|keywords=Crustaceans, permeability transition pore, cyclosporin A,
|mipnetlab=HU Budapest Chinopoulos C, HU Budapest Semmelweis Univ
|mipnetlab=HU Budapest Chinopoulos C
}}
}}
{{Labeling
{{Labeling

Revision as of 15:36, 28 August 2014

Publications in the MiPMap
[[Has title::Konrad C, Kiss G, Torocsik B, Adam-Vizi V, Chinopoulos C (2012) Absence of Ca2+-induced mitochondrial permeability transition but presence of bongkrekate-sensitive nucleotide exchange in C. crangon and P. serratus. PLoS One 7: e39839.]]

ยป [[Has info::PMID: 22768139 Open Access]]

Was written by::Konrad C, Was written by::Kiss G, Was written by::Torocsik B, Was written by::Adam-Vizi V, Was written by::Chinopoulos C (Was published in year::2012) Was published in journal::PLoS One

Abstract: [[has abstract::Mitochondria from the embryos of brine shrimp (Artemia franciscana) do not undergo Ca2+-induced permeability transition in the presence of a profound Ca2+ uptake capacity. Furthermore, this crustacean is the only organism known to exhibit bongkrekate-insensitive mitochondrial adenine nucleotide exchange, prompting the conjecture that refractoriness to bongkrekate and absence of Ca2+-induced permeability transition are somehow related phenomena. Here we report that mitochondria isolated from two other crustaceans, brown shrimp (Crangon crangon) and common prawn (Palaemon serratus) exhibited bongkrekate-sensitive mitochondrial adenine nucleotide transport, but lacked a Ca2+-induced permeability transition. Ca2+ uptake capacity was robust in the absence of adenine nucleotides in both crustaceans, unaffected by either bongkrekate or cyclosporin A. Transmission electron microscopy images of Ca2+-loaded mitochondria showed needle-like formations of electron-dense material strikingly similar to those observed in mitochondria from the hepatopancreas of blue crab (Callinectes sapidus) and the embryos of Artemia franciscana. Alignment analysis of the partial coding sequences of the adenine nucleotide translocase (ANT) expressed in Crangon crangon and Palaemon serratus versus the complete sequence expressed in Artemia franciscana reappraised the possibility of the 208-214 amino acid region for conferring sensitivity to bongkrekate. However, our findings suggest that the ability to undergo Ca2+-induced mitochondrial permeability transition and the sensitivity of adenine nucleotide translocase to bongkrekate are not necessarily related phenomena.]] โ€ข Keywords: has publicationkeywords::Crustaceans, has publicationkeywords::permeability transition pore, has publicationkeywords::cyclosporin A

โ€ข O2k-Network Lab: Was published by MiPNetLab::HU Budapest Chinopoulos C


Labels:


Organism: Organism::Artemia 

Preparation: Preparation::Isolated Mitochondria 



HRR: Instrument and method::Oxygraph-2k, Instrument and method::Ca 


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