User:Eric Martz/Ramachandran Principle Quiz
From Proteopedia
(Difference between revisions)
| Line 9: | Line 9: | ||
- 4 | - 4 | ||
- 5 | - 5 | ||
| - | || | + | ||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 | ||
| Line 20: | Line 20: | ||
+ 4 | + 4 | ||
- 5 | - 5 | ||
| - | ||The phi angle is defined by (1) the carboxy carbon from the previous amino acid; (2) N in the amino acid containing the phi bond; (3) C<sub>α</sub> in the amino acid containing the phi bond; and (4) the carboxy carbon of the amino acid containing the phi bond. | + | ||[[Image:Phi-angle.png|150px|right]] |
| + | The phi angle is defined by (1) the carboxy carbon from the previous amino acid; (2) N in the amino acid containing the phi bond; (3) C<sub>α</sub> in the amino acid containing the phi bond; and (4) the carboxy carbon of the amino acid containing the phi bond. | ||
{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: | ||
