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Gene Transfer from Bacteria and Archaea Facilitated Evolution of an Extremophilic Eukaryote
TLDR
Findings show that a pan-domain gene pool has facilitated environmental adaptation in this unicellular eukaryote, Galdieria sulphuraria.
Vacuolar calcium channels.
TLDR
A critical update of existing experimental evidence for vacuolar Ca2+ channels is presented and interesting insights are provided into the physiological function of the TPC1/SV channel.
Slowly activating vacuolar channels can not mediate Ca2+-induced Ca2+ release
TLDR
It was concluded that the SV channel is not suited for Ca2-induced Ca2+ release from the vacuole, and the open-probability further decreased.
Fast-activating cation channel in barley mesophyll vacuoles. Inhibition by calcium
TLDR
The properties of the so-called fast-activating vacuolar (FV) current which dominates the electrical characteristics of the tonoplast at physiological free Ca2+ concentrations are investigated and it is proposed that transport of K+ through this cation channel controls the electrical potential difference across the tonoblast.
Ion Channel Permeable for Divalent and Monovalent Cations in Native Spinach Thylakoid Membranes
TLDR
Kinetic analysis demonstrated that voltage dependence of the total open probability was determined by the probability of bursts formation while the probability to find the channel in open state within a burst of activity was hardly voltage-dependent.
Mechanism of luminal Ca2+ and Mg2+ action on the vacuolar slowly activating channels
TLDR
It is demonstrated that vacuolar Ca2+ is a crucial regulator to restrict SV channel activity to a physiologically meaningful range, which is less than 0.1% of maximum SV channelActivity.
A voltage-dependent chloride channel in the photosynthetic membrane of a higher plant
Photophosphorylation in photosynthetic membranes of plants (thylakoid membranes) is driven by an electrochemical potential difference of the proton1. The light-driven net uptake of protons into the
Horizontal gene acquisitions by eukaryotes as drivers of adaptive evolution
TLDR
The hypothesis that horizontally acquired genes may have contributed more to adaptive evolution of eukaryotes than previously assumed is raised.
Relationship between photosynthetic electron transport and pH gradient across the thylakoid membrane in intact leaves.
TLDR
The light-dependent pH gradient across the thylakoid membrane in intact leaves was calculated using a stoichiometry of 3 ATP/CO2 and the known relationship between ATP synthesis rate and driving force (Delta pH), and the significance of the steep pH dependences with slightly different pKa values is discussed.
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