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December 22, 2010

The Largest Synthetic Structure with Molecular Precision is now 200 million Daltons



(Angewandte Chemie International Edition) The Largest Synthetic Structure with Molecular Precision: Towards a (macro) Molecular Object

Pushing the limits: A 200 million dalton structurally defined, linear macromolecule (PG5) has a molar mass, cross-section dimension, and cylindrical shape that are comparable to some naturally occurring objects, such as amyloid fibrils or certain plant viruses. The macromolecule is resistant against flattening out on a surface; the picture shows PG5 embracing the tobacco mosaic virus (TMV).

The unified atomic mass unit, also called the dalton (symbol: Da), is a unit used for indicating mass on an atomic or molecular scale. It is defined as one twelfth of the rest mass of an unbound atom of carbon-12 in its nuclear and electronic ground state



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