>gnl|mdb|bmrb10052:1 pyrrolidone carboxyl peptidase cys-free mutant MKVLVTGFEPFGGEKINPTERIAKDLDGIKIGDAQVFGRVLPVVFGKAKEVLEKTLEEIKPDIAIHVGLAPGRSAISIER IAVNAIDARIPDNEGKKIEDEPIVPGAPTAYFSTLPIKKIMKKLHERGIPAYISNSAGLYLSNYVMYLSLHHSATKGYPK MSGFIHVPYIPEQIIDKIGKGQVPPSMSYEMELEAVKVAIEVALEELL