publication . Article . 2018

Native-state imaging of calcifying and noncalcifying microalgae reveals similarities in their calcium storage organelles

Assaf Gal; Andrea Sorrentino; Keren Kahil; Eva Pereiro; Damien Faivre; André Scheffel;
Open Access English
  • Published: 23 Oct 2018
  • Publisher: HAL CCSD
  • Country: France
Calcium storage organelles are common to all eukaryotic organisms and play a pivotal role in calcium signaling and cellular calcium homeostasis. In most organelles, the intraorganellar calcium concentrations rarely exceed micromolar levels. Acidic organelles called acidocalcisomes, which concentrate calcium into dense phases together with polyphosphates, are an exception. These organelles have been identified in diverse organisms, but, to date, only in cells that do not form calcium biominerals. Recently, a compartment storing molar levels of calcium together with phosphorous was discovered in an intracellularly calcifying alga, the coccolithophore Emiliania hux...
free text keywords: [SDV]Life Sciences [q-bio], Biological Sciences, Environmental Sciences, Physical Sciences, Chemistry, acidocalcisome, biomineralization, intracellular calcium store, coccolithophore, cryo–X-ray tomography, Multidisciplinary, Calcium in biology, Biomineralization, Calcium signaling, Coccolith, Coccolithophore, biology.organism_classification, biology, Calcium, chemistry.chemical_element, chemistry, Acidocalcisome, Pleurochrysis carterae, Biophysics
Funded by
Transnational access and enhancement of integrated Biological Structure determination at synchrotron X-ray radiation facilities
  • Funder: European Commission (EC)
  • Project Code: 283570
  • Funding stream: FP7 | SP4 | INFRA
Instruct-ERICInstruct-ERIC Projects: Transnational access and enhancement of integrated Biological Structure determination at synchrotron X-ray radiation facilities
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