Daria N Shalaeva, Dmitry A Cherepanov ... Armen Y Mulkidjanian
In potassium-dependent NTPases, insertion of the activating potassium ion into the active site leads to rotation of the gamma-phosphate yielding a near-eclipsed, catalytically productive conformation of the triphosphate chain.
Alison K Gillingham, Jessie Bertram ... Sean Munro
Relocation of Rab, Ras and Rho family GTPases to the surface of mitochondria enables efficient identification of their effectors, exchange factors and GAPs by proximity biotinylation.
Coordinate control of lysosomal v-ATPase subunits and biogenesis factor TFEB by miR-1 identifies a key regulatory axis with strong links to age-related proteotoxic disease.
Structural and biochemical studies indicate that AAA+ ATPase employ a general mechanism to translocate a variety of substrates, including extended polypeptides, hairpins, crosslinked chains, and chains conjugated to other molecules.
Taylor B Updegrove, Jailynn Harke ... Kumaran S Ramamurthi
Reengineering the nucleotide-binding pocket of an extant ATPase to restore ancestral GTPase activity revealed an ATP-dependent intermediate required for function and suggested why the protein evolved to use ATP.
A biochemical approach unveils the overall shape of a subclass of heavy-metal transporting pumps, thereby shedding light on principle molecular determinants linked to the transport mechanism of these elusive machines, information that is critical well beyond basic science.