Structural Plasticity of Helical Nanotubes Based on Coiled-Coil Assemblies
نویسندگان
چکیده
منابع مشابه
Structural plasticity of helical nanotubes based on coiled-coil assemblies.
Numerous instances can be seen in evolution in which protein quaternary structures have diverged while the sequences of the building blocks have remained fairly conserved. However, the path through which such divergence has taken place is usually not known. We have designed two synthetic 29-residue α-helical peptides, based on the coiled-coil structural motif, that spontaneously self-assemble i...
متن کاملNew currency for old rope: from coiled-coil assemblies to α-helical barrels.
α-Helical coiled coils are ubiquitous protein-protein-interaction domains. They share a relatively straightforward sequence repeat, which directs the folding and assembly of amphipathic α-helices. The helices can combine in a number of oligomerisation states and topologies to direct a wide variety of protein assemblies. Although in nature parallel dimers, trimers and tetramers dominate, the pot...
متن کاملRational design of helical nanotubes from self-assembly of coiled-coil lock washers.
Design of a structurally defined helical assembly is described that involves recoding of the amino acid sequence of peptide GCN4-pAA. In solution and the crystalline state, GCN4-pAA adopts a 7-helix bundle structure that resembles a supramolecular lock washer. Structurally informed mutagenesis of the sequence of GCN4-pAA afforded peptide 7HSAP1, which undergoes self-association into a nanotube ...
متن کاملThe design of coiled-coil structures and assemblies.
Protein design allows sequence-to-structure relationships in proteins to be examined and, potentially, new protein structures and functions to be made to order. To succeed, however, the protein-design process requires reliable rules that link protein sequence to structure?function. Although our present understanding of coiled-coil folding and assembly is not complete, through numerous bioinform...
متن کاملRapid Identification of Malaria Vaccine Candidates Based on α-Helical Coiled Coil Protein Motif
To identify malaria antigens for vaccine development, we selected alpha-helical coiled coil domains of proteins predicted to be present in the parasite erythrocytic stage. The corresponding synthetic peptides are expected to mimic structurally "native" epitopes. Indeed the 95 chemically synthesized peptides were all specifically recognized by human immune sera, though at various prevalence. Pep...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Structure
سال: 2015
ISSN: 0969-2126
DOI: 10.1016/j.str.2014.12.008