User:Eric Martz/Ramachandran Principle Quiz
From Proteopedia
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<quiz display=simple> | <quiz display=simple> | ||
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| - | {The number of phi and psi bonds in each amino acid in a polypeptide chain is: | ||
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| - | - None | ||
| - | - 1 | ||
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| - | ||[[Image:Phi-psi-bonds.png|150px|right]]The phi bond is between N and C<sub>α</sub>. The psi bond is between C<sub>α</sub> and the carbonyl carbon. | ||
{How many bonded atoms are required to constitute a | {How many bonded atoms are required to constitute a | ||
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{The number of phi and psi angles in an isolated amino acid (not in a polypeptide chain) is: | {The number of phi and psi angles in an isolated amino acid (not in a polypeptide chain) is: | ||
|type="[]"} | |type="[]"} | ||
| - | + | + None | |
- 1 | - 1 | ||
| - | + | - 2 | |
- 3 | - 3 | ||
- 4 | - 4 | ||
- 5 | - 5 | ||
| - | + | ||The phi angle involves the carboxy carbon of the previous amino acid in a polypeptide chain. The psi angle involves the N of the subsequent amino acid. Therefore an isolated single amino acid has neither phi nor psi angles. | |
