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Structural comparisons of the major coat proteins of class I phages IKe, M13, and the fd-Y21M mutant. (Left) Structural superimpositions of the IKe major coat protein (red) with that of M13 (PDB entry 2MJZ, blue) based on the HC regions. (Right) Structure superimpositions of the IKe major coat protein (red) with that of phage fd Y21M mutant (PDB entry 2C0X, green) based on the HC regions. The helical parameters are given for each phage structure.
