SH3 Domains as Suitable Models to Study Amyloid Aggregation -- SH Domain Proteins in Plants: Roles in Signaling Transduction and Membrane Trafficking -- Versatility of SH3 Domains in the Cellular Machinery -- Structure-Function Relationship of Bacterial SH3 Domains -- Activation of PI3K by Thyroid Hormone Nuclear Receptors -- SH Domains' Interaction with SliMs: Maximizing Adaptivity of Signaling Networks -- SH Domains and Epidermal Growth Factor Receptor -- SH2 Domain Structures and Interactions -- Cytoskeletal Signaling by Src Homology Domain-Containing Adaptor Proteins -- Structure and Function of Jak3- SH2 Domain -- Helical Assemblies and SH Domains.