>4zcsA (A:) observed residues (from ATOM records) knvviyadgvydmlhlghmkqleqakklfenttlivgvtsdnetklfkgqvvqtleerte tlkhirwvdeiispcpwvvtpeflekykidyvahddipyannqkediyawlkragkfkat qrtegvsttdlivrilknyed