Iron and copper in plasma membranes.
Nonheme iron has been found in pig erythrocyte and mouse liver plasma membranes. The amount found, 8.2 nmol/mg protein in erythrocyte membranes and 7.4 nmol/mg protein in liver plasma membrane, is slightly lower than values reported for endoplasmic reticulum and Golgi apparatus. Less than one-third of the erythrocyte membrane iron can be released by acid treatment, which indicates that most of it is not in the typical iron-sulfur structure. Copper has been found in pig erythrocyte plasma membrane at a concentration of 0.45 nmol/mg protein. These metals may be associated with the redox enzymes of plasma membranes.
D000818:Animals; D002462:Cell Membrane / Q000032:analysis* / Q000378:metabolism; D003300:Copper / Q000032:analysis* / Q000097:blood; D004579:Electron Transport; D004910:Erythrocyte Membrane / Q000032:analysis* / Q000378:metabolism; D004912:Erythrocytes / Q000032:analysis*; D007501:Iron / Q000032:analysis* / Q000097:blood; D051379:Mice; D010084:Oxidation-Reduction; D010088:Oxidoreductases / Q000378:metabolism; D013552:Swine
D003300:Copper; D007501:Iron; D010088:Oxidoreductases