Peptide: Difference between revisions

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==Peptides & Backbones==

This is the <scene name='Peptide~Emartz_view1~6'>backbone</scene> of 1 amino acid. Adding to the backbone with an additional amino acid on each side gives a <scene name='Peptide~Emartz_view2~6'>tripeptide</scene> (3 amino acids). No side groups are shown, and most hydrogens are omitted. Now each amino acid has a 1 carbon side group so we have <scene name='Peptide~Emartz_view3~4'>Ala-Ala-Ala</scene> (tri-alanine). Adding a carbon chain plus an NH3 on the first amino acid gives <scene name='Peptide~Emartz_view4~5'>Lys-Ala-Ala</scene>. Adding <scene name='Peptide~Emartz_view5~4'>three more carbons</scene> to the 3rd amino acid gives [[isoleucine]]: Lys-Ala-Ile. The 4th amino acid is threonine with its hydroxyl, giving <scene name='Peptide~Emartz_view6~1'>Lys-Ala-Ile-Thr</scene>. Here is the shape of the <scene name='Peptide~Emartz_view7~1'>tetrapeptide</scene> (4 AAs). The stick representation has too much detail for larger proteins, so the α-carbons are connected with a line called the <scene name='Peptide~Emartz_view8~1'>backbone trace</scene>. Showing only the <scene name='Peptide~Emartz_view9~2'>backbone</scene> makes it easier to see the path of the protein chain (its secondary and tertiary structure).

This is the <scene name='Peptide~Emartz_view1~6'>backbone</scene> of 1 amino acid. Adding to the backbone with an additional amino acid on each side gives a <scene name='Peptide~Emartz_view2~6'>tripeptide</scene> (3 amino acids). No side groups are shown, and most hydrogens are omitted. Now each amino acid has a 1 carbon side group so we have <scene name='Peptide~Emartz_view3~4'>Ala-Ala-Ala</scene> (tri-alanine). Adding a carbon chain plus an NH3 on the first amino acid gives <scene name='Peptide~Emartz_view4~5'>Lys-Ala-Ala</scene>. Adding <scene name='Peptide~Emartz_view5~4'>three more carbons</scene> to the 3rd amino acid gives [[isoleucine]]: Lys-Ala-Ile. The 4th amino acid is threonine with its hydroxyl, giving <scene name='Peptide~Emartz_view6~2'>Lys-Ala-Ile-Thr</scene>. Here is the shape of the <scene name='Peptide~Emartz_view7~2'>tetrapeptide</scene> (4 AAs). The stick representation has too much detail for larger proteins, so the α-carbons are connected with a line called the <scene name='Peptide~Emartz_view8~2'>backbone trace</scene>. Showing only the <scene name='Peptide~Emartz_view9~3'>backbone</scene> makes it easier to see the path of the protein chain (its secondary and tertiary structure).

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Revision as of 14:48, 11 October 2007 view source Eran Hodis (talk \| contribs) 7,087 edits No edit summary ← Older edit		Revision as of 14:52, 11 October 2007 view source Eran Hodis (talk \| contribs) 7,087 edits No edit summary Newer edit →
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	==Peptides & Backbones==		==Peptides & Backbones==
	This is the <scene name='Peptide~Emartz_view1~6'>backbone</scene> of 1 amino acid. Adding to the backbone with an additional amino acid on each side gives a <scene name='Peptide~Emartz_view2~6'>tripeptide</scene> (3 amino acids). No side groups are shown, and most hydrogens are omitted. Now each amino acid has a 1 carbon side group so we have <scene name='Peptide~Emartz_view3~4'>Ala-Ala-Ala</scene> (tri-alanine). Adding a carbon chain plus an NH3 on the first amino acid gives <scene name='Peptide~Emartz_view4~5'>Lys-Ala-Ala</scene>. Adding <scene name='Peptide~Emartz_view5~4'>three more carbons</scene> to the 3rd amino acid gives [[isoleucine]]: Lys-Ala-Ile. The 4th amino acid is threonine with its hydroxyl, giving <scene name='Peptide~Emartz_view6~1'>Lys-Ala-Ile-Thr</scene>. Here is the shape of the <scene name='Peptide~Emartz_view7~1'>tetrapeptide</scene> (4 AAs). The stick representation has too much detail for larger proteins, so the α-carbons are connected with a line called the <scene name='Peptide~Emartz_view8~1'>backbone trace</scene>. Showing only the <scene name='Peptide~Emartz_view9~2'>backbone</scene> makes it easier to see the path of the protein chain (its secondary and tertiary structure).		This is the <scene name='Peptide~Emartz_view1~6'>backbone</scene> of 1 amino acid. Adding to the backbone with an additional amino acid on each side gives a <scene name='Peptide~Emartz_view2~6'>tripeptide</scene> (3 amino acids). No side groups are shown, and most hydrogens are omitted. Now each amino acid has a 1 carbon side group so we have <scene name='Peptide~Emartz_view3~4'>Ala-Ala-Ala</scene> (tri-alanine). Adding a carbon chain plus an NH3 on the first amino acid gives <scene name='Peptide~Emartz_view4~5'>Lys-Ala-Ala</scene>. Adding <scene name='Peptide~Emartz_view5~4'>three more carbons</scene> to the 3rd amino acid gives [[isoleucine]]: Lys-Ala-Ile. The 4th amino acid is threonine with its hydroxyl, giving <scene name='Peptide~Emartz_view6~2'>Lys-Ala-Ile-Thr</scene>. Here is the shape of the <scene name='Peptide~Emartz_view7~2'>tetrapeptide</scene> (4 AAs). The stick representation has too much detail for larger proteins, so the α-carbons are connected with a line called the <scene name='Peptide~Emartz_view8~2'>backbone trace</scene>. Showing only the <scene name='Peptide~Emartz_view9~3'>backbone</scene> makes it easier to see the path of the protein chain (its secondary and tertiary structure).