Nanostructures articles from across Nature Portfolio

Engineering the tunability of protein assembly in response to pH changes within a narrow range is challenging. Here the authors report the de novo computational design of pH-responsive protein filaments that exhibit rapid, precise, tunable and reversible assembly and disassembly triggered by small pH changes.

The spacing of ligands presented to cells can have a huge impact on cellular responses. DNA origami is used to block structures to control the distribution of Toll-like receptor ligands and optimize presentation in the activation of dendritic cells in cancer immunotherapy.

An intelligent DNA nanodevice, composed of DNA origami nanosheets and a thrombin-responsive DNA fastener, accurately delivers the appropriate dose of tissue plasminogen activator following activation by distinct thrombosis events.

Artificial biomolecular condensates are valuable tools to study the design principles of phase separation. Here, the authors demonstrate and characterize a model system of artificial DNA condensates whose kinetic formation and dissolution depends on DNA inputs that activate or deactivate the phase separating DNA subunits.

Assessment of the health risks of exposure to anthropogenic nanomaterials is crucial to maximize their potential applications. This double-blind, randomized controlled study in healthy humans evaluates the impact of inhalation of graphene oxide nanosheets on acute pulmonary and cardiovascular functions.

An article in Nature describes regular, modular protein building blocks that can be combined — following a standard blueprint — into a variety of architectures.

Conserved regions of the circular DNA sequence of the M13mp18 bacteriophage, which is used as a scaffold for DNA origami construction, are targeted with specific hybridization-chain-reaction probes. The probes enable sensitive detection of DNA origami nanostructures in cells, organoids and tissues to assess their biodistribution and stability.

A biohybrid, leaf-spring design of DNA origami functions as a pulsating nanoengine that exploits the DNA-templated RNA transcription mechanism while consuming nucleoside triphosphates as fuel. The nanoengine also drives a nanomechanical follower structure.

To determine the physiologically relevant oligomeric form of membrane proteins is extremely challenging. Now an elegant method of counting the oligomers in membrane proteins in near-native states is presented, using photobleaching and nanodiscs formed directly from cellular membranes.

DNA-origami nanostructures self-assembled at milder physicochemical parameters in magnesium-free conditions achieve structural complexities akin to those formed by thermal annealing at elevated temperatures, and open a route to assembling DNA nanomachines in physiological conditions.

Genetically encoded concentric barcodes function as multiplexed electron microscopy (EM) gene reporters (EMcapsulins) for cell culture and in vivo models. These barcodes can be used to visualize gene expression information as automatically labeled overlays on volume EM data.