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.
User:Stephen Mills/XU Peptide Tutorial 1 p1
From Proteopedia
Biochemistry Tutorial #1 - Peptides Pt. 1
The alpha amino acids polymerize, or bond, through the elimination of a water molecule. Polymers composed of two amino acid residues are known as dipeptides. Longer polymers are called oligopeptides (up to around 20 amino acids) or polypeptides (> 20 amino acids). Proteins can contain any number of amino acids linked together but each has a unique length (number of amino acids) and sequence (the identity and order of amino acids in the polymer).
In this excercise, you will identify amino acids, the amino and carboxy groups involved in the peptide bond, look at peptide bonds and oligopeptide structure and finally also examine disulfide bonds.
Which amino acid is this?
|
Click here to find out which amino acid it is.
Note: in these tutorials, the images are 3D interactive images. You can manipulate them as you wish to get a better view of the molecules.
You can rotate the amino acid by holding down the right mouse button and dragging.
Other things you can do:
- To rotate: left drag
- To Zoom: scroll button or shift + left drag
- To Translate: ctrl + right drag
- Right click to bring up an options menu
