Table 1.
Selected structural biological measurements by single-molecule-based super-resolution approaches.
| Biological superstructure(s) | Significance / Comments | References |
|---|---|---|
| Integrin-based focal adhesions | Integrins and actin are vertically separated by a ~40-nm focal adhesion core region consisting of multiple protein-specific strata including integrin; talin, a further component, has polarized orientation, indicating a role in organizing the focal adhesion strata. | [90] |
| MreB, CreS, PopZ, FtsZ in C. crescentus | Cytoskeletal and polar as well as midplane-located protein superstructures in live bacteria | [27,88,89,91] |
| Aggregates of mutant huntingtin exon 1 protein | Fibrillar aggregates, possibly transient protofibrils, with a sharp cut-off length of ~1.5μm observed to co-exist with mature inclusion bodies | [43,44] |
| Cycling nitro-reductase | Visualization in live B. subtilis | [45] |
| Sodium channels in live neuronal model cells by fluorescent saxitoxin | Novel labeling by de novo synthesis of fluorescent forms of saxitoxin, fast (<10s) dynamics of neuritic spine movements | [46] |
| Nucleosome-binding protein HU in live C. crescentus | Spatial point statistics analysis (2D) of chromosomal DNA | [35] |
| ParA/ParB in live C. crescentus | Division spindle components for chromosome segregation | [38] |
| Chemotaxis network in E. coli | New model triggered for localization patterns | [37] |
| Actin and spectrin | Highly periodic protein arrangements in axons | [33,34] |
| Synaptic proteins Bassoon and Homer 1 | Organization of key proteins at the synapse in brain tissue | [92] |
| Spine and excitatory synapse density in the hippocampus (bassoon and glutamate receptor 1/2) | Afadin, a Ras/Rap effector, is a key intracellular signaling molecule for cadherin recruitment and is necessary for spine and synapse formation in vivo | [93] |
| Podosome formation and dissociation | visualized using an mCherry-tagged truncated talin construct (live cell) | [81] |
| DNA | Direct dye labeling | [39] |
| Various organelles | Live cell, high temporal sampling using membrane probes (1–2 seconds / SR reconstruction) | [51] |
| Proteins central to centrosome formation | The carboxy terminus of pericentrin-like protein (PLP) is revealed to be at the centriole wall, radiating outwards into a matrix domain where it is organized into clusters having quasi-nine-fold symmetry. | [94] |