Fibroins: Difference between revisions

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Displayed here is a peptide segment that is present in many fibroin proteins that are found in silk fibers. (<scene name='Fibroins/Chain_a/1'>Initial scene</scene>) It is repeated many times to make up the ordered, repetitive structure of the crystalline domain of the fibroin.

<Br>

Determine the sequence of the segment by hovering over the residues taking time to consider the nature of their side chains and from which direction their side chains project from the backbone. All the Gly need to be on the same side of the peptide in order to construct the silk fiber. Labels describe how ~~additional~~ <scene name='Fibroins/Chain_a_2/1'>~~residues~~</scene> ~~are added to the ends of the hexapeptide segment~~ to produce a longer polypeptide.

Determine the sequence of the segment by hovering over the residues taking time to consider the nature of their side chains and from which direction their side chains project from the backbone. All the Gly need to be on the same side of the peptide in order to construct the silk fiber. Labels describe how <scene name='Fibroins/Chain_a_2/1'>hexapeptides are connected</scene> together to produce a longer polypeptide.

A two strand β-sheet is formed by <scene name='Fibroins/Chains_ab/2'>two hexapeptides</scene> positioned antiparallel with respect to each other. Show interchain <scene name='Fibroins/Chains_ab_3/2'>hbonds</scene> which hold chains together. Show <scene name='Fibroins/Chains_ab_3/1'>spacefill</scene> display.

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@@ Line 5: / Line 5: @@
 Displayed here is a peptide segment that is present in many fibroin proteins that are found in silk fibers. (<scene name='Fibroins/Chain_a/1'>Initial scene</scene>) It is repeated many times to make up the ordered, repetitive structure of the crystalline domain of the fibroin.
 <Br>
-Determine the sequence of the segment by hovering over the residues taking time to consider the nature of their side chains and from which direction their side chains project from the backbone. All the Gly need to be on the same side of the peptide in order to construct the silk fiber. Labels describe how additional <scene name='Fibroins/Chain_a_2/1'>residues</scene> are added to the ends of the hexapeptide segment to produce a longer polypeptide.
+Determine the sequence of the segment by hovering over the residues taking time to consider the nature of their side chains and from which direction their side chains project from the backbone. All the Gly need to be on the same side of the peptide in order to construct the silk fiber. Labels describe how <scene name='Fibroins/Chain_a_2/1'>hexapeptides are connected</scene> together to produce a longer polypeptide.
 A two strand &beta;-sheet is formed by <scene name='Fibroins/Chains_ab/2'>two hexapeptides</scene> positioned antiparallel with respect to each other. Show interchain <scene name='Fibroins/Chains_ab_3/2'>hbonds</scene> which hold chains together.  Show <scene name='Fibroins/Chains_ab_3/1'>spacefill</scene> display.