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Illustration of the interacting residues (in sticks) of the protein (atom color type) and the bound peptide (red): (a) chicken calmodulin and smMLCK (code entry 2O5G), (b) human centrin 2 and the centrin binding region of XPC (code entry 2GGM), (c) human BCL-XL protein and BAK (code entry 1BXL), (d) human E3 ubiquitin- protein ligase MDM2 and p53 tumor transactivation domain (code entry 1YCR), (e) rabbit cardiac troponin C and cardiac troponin I (code entry 1A2X).
