3q7w | pdb_00003q7w

Crystal structure of Symfoil-4P/PV1: de novo designed beta-trefoil architecture with symmetric primary structure, primitive version 1

spinqualitylabelsall models 3q7w, resolution 1.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3q7w is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: SO4 Related: 1jqz, 3o4d, 3q7x, 3q7y Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed A compendium of different types of abiotic chemical syntheses identifies a consensus set of 10 "prebiotic" alpha-amino acids. Before the emergence of biosynthetic pathways, this set is the most plausible resource for protein formation (i.e., proteogenesis) within the overall process of abiogenesis. An essential unsolved question regarding this prebiotic set is whether it defines a "foldable set"-that is, does it contain sufficient chemical information to permit cooperatively folding polypeptides? If so, what (if any) characteristic properties might such polypeptides exhibit? To investigate these questions, two "primitive" versions of an extant protein fold (the beta-trefoil) were produced by top-down symmetric deconstruction, resulting in a reduced alphabet size of 12 or 13 amino acids and a percentage of prebiotic amino acids approaching 80%. These proteins show a substantial acidification of pI and require high salt concentrations for cooperative folding. The results suggest that the prebiotic amino acids do comprise a foldable set within the halophile environment. Simplified protein design biased for prebiotic amino acids yields a foldable, halophilic protein.,M Longo L, Lee J, Blaber M Proc Natl Acad Sci U S A. 2013 Jan 22. PMID:23341608 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

Proteopedia Page Contributors and Editors (what is this?)

OCA