title: Polyphenol oxidase as a factor in aging.
abstract: Polyphenol oxidase oxidizes several proteins that contain tyrosine. During aging, when synthesis and replacement of catabolized proteins are lagging, the relative proportion of oxidized species might reach high values, thus impairing physiological function. A mathematical analysis verifies this assumption.
mesh_terms: D000375:Aging; D000818:Animals; D004156:Catechol Oxidase / Q000502:physiology*; D008433:Mathematics; D010944:Plants; D011506:Proteins / Q000378:metabolism; D014443:Tyrosine / Q000378:metabolism
chemical_list: D011506:Proteins; D014443:Tyrosine; D004156:Catechol Oxidase