Steric considerations, protein

Due to steric considerations, n will generally be a lower number than in the free ligand case. For the adsorption of proteins on a solid surface, the total ligand concentration is usually represented as the actual surface area of the adsorbent. In studies utiliz-... 

The favoured dihedral angles for protein main chains were derived from energy considerations of steric clashes in peptides giving the well known Ramachandran plot (Ramachandran and Sasisekharan, 1968). These phi/psi combinations characterize the elements of secondary structure. Accurate main chain models can be constructed from spare parts, that is short pieces of helices, sheets, turns, and random coils taken from highly refined structures, provided a series of C-alpha positions can be established from the electron density map... 

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