Structure of Plant Photosystem I Revealed by Theoretical Modeling

Supramolecular Copolymers: Structure and Composition Revealed by Theoretical Modeling

Supramolecular copolymers, non-covalent analogues of synthetic copolymers, constitute a new and promising class of polymers. In contrast to their covalent counterparts, the details of their mechanism of formation, as well as the factors determining their composition and length, are still poorly understood. Here, the supramolecular copolymerization between two slightly structurally different ben...

Structure of photosystem I.

In plants and cyanobacteria, the primary step in oxygenic photosynthesis, the light induced charge separation, is driven by two large membrane intrinsic protein complexes, the photosystems I and II. Photosystem I catalyses the light driven electron transfer from plastocyanin/cytochrome c(6) on the lumenal side of the membrane to ferredoxin/flavodoxin at the stromal side by a chain of electron c...

Structure and function of photosystem I.

The past year has been significant advances in the understanding of the structure and function of photosystem I (PS I). The highlights included significant progress in discovering the arrangement and function of subunits of PS I, and improvement of the structure of PS I to 4 degrees resolution, as well as new evidence for the mechanism of the interaction of PS I with its soluble electron carrie...

Structure of Isolated Plant Golgi Apparatus Revealed by Negative Staining

Sucrose-gradient-purified dictyosomes of plant Golgi apparatus appear, after glutaraldehyde stabilization, as stacks of highly fenestrate and tubate cisternae when negatively stained with phosphotungstic acid, shadowed with heavy metal, or OsO(4)-stained in thin section. The tubular proliferations (diameter 200 to 400 A) extend for several microns from the central region and are united at inter...

Structure and Dynamics in Photosystem I