Two-cell metabolism in multicellular cyanobacteria ($)
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Nitrogen-fixing cyanobacteria such as Anabaena sp. PCC 7120 have the challenge of supporting nitrogenase, an enzyme that is highly sensitive to oxygen, and simultaneously photosynthesis, an oxygen-producing set of reactions. They accomplish this by segregating these reactions into two cells, heterocysts…
RNA Degradome Studies Give Insights into Ribosome Dynamics
IN BRIEF by Gregory Bertoni gbertoni@aspb.org
RNA metabolism is key to a number of crucial processes in the cell, including transcription, RNA splicing, translation, and gene regulation. For efficient translation, mature mRNAs must have a 7-methylguanosine cap on the 5′ end to help recruit the translation…
Ticket to Ride: tRNA-Related Sequences and Systemic Movement of mRNAs
IN BRIEF by Jennifer Mach jmach@aspb.org
Movement of macromolecules through the plant phloem provides a mechanism for long-distance signaling that plants use in development, disease resistance, and other adaptive responses (reviewed in Spiegelman et al., 2013). For example, full-length RNAs, such…