This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
Glycine
From Proteopedia
(Difference between revisions)
(→Representations) |
|||
| (4 intermediate revisions not shown.) | |||
| Line 4: | Line 4: | ||
==Representations== | ==Representations== | ||
| - | The <scene name='Glycine/Emartz_ballandstick/1'>ball and stick</scene> representation of glycine does not show the true size and shape of the molecule. | + | *The <scene name='Glycine/Emartz_ballandstick/1'>ball and stick</scene> (also called "ball and spoke") representation of glycine shows atoms and covalent bonds, but does not show the true size and shape of the molecule. |
| + | *The <scene name='Glycine/Emartz_spacefill/1'>spacefilling</scene> representation shows size (atoms at their [[van der Waals radii]]) and shape but hides structure behind the surface. | ||
| + | * The <scene name='Glycine/Emartz_stick/1'>stick</scene> representation shows only bonds, and is better for seeing through layers of a large molecule. Even better for proteins are [[Backbone representations|schematic backbone representations]], including [[Backbone representations|ribbon or cartoon representations]]. | ||
| + | *In this view, the atoms that would, in a [[Chain|polypeptide chain]], become part of the <scene name='Glycine/Emartz_backbone/1'>peptide backbone (main chain)</scene> are highlighted. See also [[Backbone_representations#Protein_Main_Chain|Protein Main Chain]]. | ||
| + | |||
| + | ==See Also== | ||
| + | *[[Amino_Acids#Glycine|Glycine at Amino Acids]]. | ||
Current revision
|
Glycine is the simplest amino acid. It's sidechain (sometimes called the R-group) is one hydrogen atom. Because it has a hydrogen atom as its sidechain, glycine is the only achiral amino acid. Because it lacks a bulky sidechain, glycine has a high degree of rotational freedom and is frequently found in turns along with proline.
Representations
- The (also called "ball and spoke") representation of glycine shows atoms and covalent bonds, but does not show the true size and shape of the molecule.
- The representation shows size (atoms at their van der Waals radii) and shape but hides structure behind the surface.
- The representation shows only bonds, and is better for seeing through layers of a large molecule. Even better for proteins are schematic backbone representations, including ribbon or cartoon representations.
- In this view, the atoms that would, in a polypeptide chain, become part of the are highlighted. See also Protein Main Chain.
