Published in Hepatitis Weekly, December 28th, 1998
Recently, cryoelectron microscopy of isolated macromolecular complexes has advanced to resolutions below 10 A, enabling direct visualization of alpha-helical secondary structure.
"To help correlate such density maps with the amino acid sequences of the component proteins, we advocate peptide-based difference mapping, i.e., insertion of peptides, approximately 10 residues long, at targeted points in the sequence and visualization of these peptides as bulk labels in cryoelectron microscopy-derived...
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