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Discuss the roles that the protein components play in the classes of metalloproteins.
Member rating: No Rating | Words: | Submitted: Mon Jun 19 2006
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Discuss the roles that the protein components play in the following classes of metalloproteins: i. electron transfer proteins: Electron transfer reactions involves a switch in the redox states of a metal ion whether it involve Cu(I)/Cu(II), as is the case in blue copper proteins for example, or Fe(II)/Fe(III) as is the case in cytochromes or Fe-S cluster proteins. In any case the protein component of the metalloproteins plays significant roles, some of which are: 1. protection of the redox site from solvent or other reactive species if necessary 2. optimizing the local electrostatic environment 3. optimizing the spatial arrangement do that the electron transfer distances are minimised 4. fine tuning the environment around the metal centre to adjust the redox potential 5. selection of the metal centre 6. selection of reaction partners If metal ions in electron transfer metalloproteins are the site of electron transfer, the protein component in such proteins is important for establishing the metal...
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