PEPTIDES & BACKBONES
CPK Color Scheme
This is the backbone of 1 amino acid (AA). Here is the backbone of a tripeptide (3 AA's). No side groups are shown, and most hydrogens are omitted. Now each AA has a 1-carbon side group, so we have Ala Ala Ala (tri-alanine) Adding an NH3 to a carbon chain on the 1st AA gives Lys Ala Ala Adding three more carbons to the 3rd AA gives isoleucine: Lys Ala Ile The 4th AA is threonine with its hydroxyl, giving Lys Ala Ile Thr Here is the shape of the tetrapeptide. The stick representation has too much detail for larger proteins, so the alpha-carbons are connected with a line called the BACKBONE trace. Showing only the backbone makes it easier to see the secondary and tertiary structure of a protein. Back to the catalase tutorial
Here is the backbone of a tripeptide (3 AA's). No side groups are shown, and most hydrogens are omitted. Now each AA has a 1-carbon side group, so we have Ala Ala Ala (tri-alanine) Adding an NH3 to a carbon chain on the 1st AA gives Lys Ala Ala Adding three more carbons to the 3rd AA gives isoleucine: Lys Ala Ile The 4th AA is threonine with its hydroxyl, giving Lys Ala Ile Thr Here is the shape of the tetrapeptide. The stick representation has too much detail for larger proteins, so the alpha-carbons are connected with a line called the BACKBONE trace. Showing only the backbone makes it easier to see the secondary and tertiary structure of a protein. Back to the catalase tutorial
Now each AA has a 1-carbon side group, so we have Ala Ala Ala (tri-alanine) Adding an NH3 to a carbon chain on the 1st AA gives Lys Ala Ala Adding three more carbons to the 3rd AA gives isoleucine: Lys Ala Ile The 4th AA is threonine with its hydroxyl, giving Lys Ala Ile Thr Here is the shape of the tetrapeptide. The stick representation has too much detail for larger proteins, so the alpha-carbons are connected with a line called the BACKBONE trace. Showing only the backbone makes it easier to see the secondary and tertiary structure of a protein. Back to the catalase tutorial
Adding an NH3 to a carbon chain on the 1st AA gives Lys Ala Ala Adding three more carbons to the 3rd AA gives isoleucine: Lys Ala Ile The 4th AA is threonine with its hydroxyl, giving Lys Ala Ile Thr Here is the shape of the tetrapeptide. The stick representation has too much detail for larger proteins, so the alpha-carbons are connected with a line called the BACKBONE trace. Showing only the backbone makes it easier to see the secondary and tertiary structure of a protein. Back to the catalase tutorial
Adding three more carbons to the 3rd AA gives isoleucine: Lys Ala Ile The 4th AA is threonine with its hydroxyl, giving Lys Ala Ile Thr Here is the shape of the tetrapeptide. The stick representation has too much detail for larger proteins, so the alpha-carbons are connected with a line called the BACKBONE trace. Showing only the backbone makes it easier to see the secondary and tertiary structure of a protein. Back to the catalase tutorial
The 4th AA is threonine with its hydroxyl, giving Lys Ala Ile Thr Here is the shape of the tetrapeptide. The stick representation has too much detail for larger proteins, so the alpha-carbons are connected with a line called the BACKBONE trace. Showing only the backbone makes it easier to see the secondary and tertiary structure of a protein. Back to the catalase tutorial
Here is the shape of the tetrapeptide. The stick representation has too much detail for larger proteins, so the alpha-carbons are connected with a line called the BACKBONE trace. Showing only the backbone makes it easier to see the secondary and tertiary structure of a protein. Back to the catalase tutorial
The stick representation has too much detail for larger proteins, so the alpha-carbons are connected with a line called the BACKBONE trace. Showing only the backbone makes it easier to see the secondary and tertiary structure of a protein. Back to the catalase tutorial
Showing only the backbone makes it easier to see the secondary and tertiary structure of a protein. Back to the catalase tutorial
Back to the catalase tutorial