The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Purple acid phosphatases (PAPs) contain a dinuclear metal center in their active site and hydrolyze phosphoric acid esters at low pH. Characteristic of this group of acid phosphatases is their resistance to inhibition by tartrate and their purple color, due to the presence of a tyrosine residue ligated to a ferric iron. The mammalian enzymes all contain a mixed-valent di-iron unit in their catalytic...