关键词: DNA double helix Protein Data Bank (PDB) crystal packing helical virus capsids noncrystallographic symmetry screw axes space group frequency α-helix
Mesh : Crystallography, X-Ray Databases, Protein Hydrogen Bonding Models, Molecular Protein Conformation, alpha-Helical Proteins / chemistry
来 源:
DOI:10.1002/pro.3356
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