Topic: Disulfide Bridges
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What is disulfide bridge?
( dī¦səl′fīd ′brij ) (organic chemistry) A sulfur-to-sulfur bond linking the sulfur atoms of two polypeptide chains. Also known as disulfide bond. Read More »
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What are disulfide bridges?
It is a disulfide linkage between two cysteinyl residues in a poly-or oligopeptide or in a... Read More »
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What amino acid breaks down disulfide bridges?
Human insulin is a small protein that consists of 51 amino acids in 2 s... Read More »
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Disulfide Bridges
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Tertiary
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Run on an SDS gel with and without mercaptoethanol. Mercaptoethanol breaks disulfide bonds, so if there are disulfide bonds (and you have a pure protein sample) the band will change because of the change in shape of the protein.
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Denaturation
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As you know that hydrogen bonding aids the formation of the secondary structures. Once these structures are formed (ie alpha helix, beta-sheet, beta-turn), the R groups now can interact with other R groups. In the tertiary structure, the we...
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http://www.sigmaaldrich.com/catalog/Prod… Hope this helps - --> -SH + -SH ---> -S-S-
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This may help you, at least as a starting point: http://www.ncbi.nlm.nih.gov/Structure/mm… Do note that they've focused on a human version of the enzyme. The enzyme may be pretty conserved, but if you're researching an echinoderm ADH, then ...
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