Pleomorphic configuration of the trimeric capsid proteins of Rice dwarf virus that allows formation of both the outer capsid and tubular crystals.

In the double-shelled capsid of Phytoreovirus, the outer capsid attaches firmly to the 3-fold axes of the T=1 core. It then forms a T=13 lattice via lateral interactions among the P8 trimers (Wu et al., 2000, Virology 271, 18-25).

Strain-specific morphologies of yeast prion amyloid fibrils.

Mass per length (mpl) measurements on single amyloid fibrils that specifically propagate the [VH], [VK], and [VL] strains of the yeast prion [PSI] reveal unanticipated differences in their structures. Many fibrils have approximately 1.0 prion molecule per 4.

Three-beam interference is a sensitive measure of the efficacy of macromolecular refinement techniques.

Triplet phases recorded from insulin crystals were used to measure the improvement of phases during model refinement and to quantify the contribution made by each step in the refinement. Conventional amplitude data were recorded to 1.5 A resolution from rhombohedral pig insulin crystals using 1.

Cross-beta order and diversity in nanocrystals of an amyloid-forming peptide.

The seven-residue peptide GNNQQNY from the N-terminal region of the yeast prion protein Sup35, which forms amyloid fibers, colloidal aggregates and highly ordered nanocrystals, provides a model system for characterizing the elusively protean cross-beta conformation. Depending on preparative conditions, orthorhombic and monoclinic crystals with similar lath-shaped morphology have been obtained. Ultra high-resolution (<0.

A Description of the Techniques and Application of Molecular Replacement Used to Determine the Structure of Polyoma Virus Capsid at 22.5 Å Resolution.

The electron density map of polyoma virus capsid crystals solved at 22.5 Å resolution by molecular replacement [Rayment, Baker, Caspar & Murakami (1982). (), 295, 110-115] shows that the 72 capsomeres that form the polyoma capsid are all pentamers.