User talk:Philip C. Sharpe
From Proteopedia
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Bio-inorganic Workshop
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Read through the instructions on the accompanying worksheet. The workshop today is about learning how to look at structures of metallo-proteins and understanding how the structure of the metal centre relates to the function of the protein.
Liver alcohol dehydrogenase, a Zn containing enzyme
The structure on the right is that of liver alcohol dehydrogenase. Clicking on any of the green links below will change the structure displayed in the box.
Urease
Click on the green link below to load the structure of urease. The structure has a pyrophosphate inhibitor bound which has only been partially displayed for the sake of clarity.
You will also need the link below to a review article in "Chemistry of Ni2+ in Urease: Sensing, Trafficking, and Catalysis" B. Zambelli, F. Musiani, S. Benini and S. Ciurli, Accounts of Chemical Research 2011, 44(7), 520-530.
[1]
Pseudoazurin
This copper-containing protein acts as an electron transfer protein.The azurin part of the name comes from the intense blue colour of this protein.
Assessment Item - Heme proteins
Answer the associated questions on Bb. This is your workshop assessment. In this section, we will look at 3 heme-containing proteins. The three proteins and their functions are described below. Your task is to use the structures, extra information given in the question on Blackboard and your knowledge of transition metal chemistry to match the structures with the correct protein, making sure that you justify your reasoning.
| Protein | Function | Associated reaction |
|---|---|---|
| Catalase | Hydrogen peroxide disproportionation | 2 H2O2 → 2 H2O + O2 |
| Cytochrome c (cyt c) | Electron transfer | Fe(II)-cyt c ⇌ Fe(III)-cyt c + e- |
| Myoglobin (Mb) | Reversible O2 binding in muscle | Mb + O2 ⇌ MbO2 |
Protein 1
Protein 2
Protein 3
