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Viagra and Phosphodiesterase 5 Complex

Human phosphodiesterase 5 (PDE5) is the protein that viagra binds to and inhits. Viagra has no...

Cellular Urban Life - Made to be Busy

Extracellular environment can be considered as urban because of the density that cells pack...

Gravitational Waves in the Spacetime Continuum

No, this is not Star Trek! This is really a theory on which active work is being pursued by...

Venn Diagram of the 20 Natural Amino Acids

In order to better understand the physico-chemical properties of amino acids, a Venn diagram...

Fluid Mosaic Model of the Membrane Bilayer

A simplified view of the Fluid Mosaic Model where only the lipid bilayer is shown. The lipid...

DNA Cleavage by Restriction Enzyme EcoRV

The restriction enzyme EcoR V is shown (colored in green and blue for each monomer in the...

The Mitochondrion - The Cellular Power Plant

Mitochondria are the providers of energy for cellular processes. These are membrane-bound...

Crystallographic Merohedral Twinning

Merohedral twinning is a special case of crystallographic twinning where the lattices of twin...

Virion - Capsid Structure

A view of an idealized virus particle, adopting icosahedral geometry. The protruding appendages...