Consider the proteins in Figure 1.  Assume they are treated with chymotrypsin to cut them into fragments, and then the fragments are separated by gel electrophoresis.  What would the fragment patterns look like in the gel for the three different proteins, assuming we can separate polypeptides that differ in size by very small amounts?  Complete Figure 2 below to show the location of the uncut polypeptides (- enzyme lanes) and the cut fragments (+ enzyme lanes).

Nutrition Now
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ISBN:9781337415408
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Chapter15: Proteins And Amino Acids
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Problem 12RQ
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Consider the proteins in Figure 1.  Assume they are treated with chymotrypsin to cut them into fragments, and then the fragments are separated by gel electrophoresis.  What would the fragment patterns look like in the gel for the three different proteins, assuming we can separate polypeptides that differ in size by very small amounts?  Complete Figure 2 below to show the location of the uncut polypeptides (- enzyme lanes) and the cut fragments (+ enzyme lanes).

Protein 1
Protein 2
Protein 3
+
+
+
Wells
Figure 2: Gel electrophoresis of proteins from Figure 1 (- enzyme lanes) as well as cut
fragments from those proteins generated through treatment by chymotrypsin (+ enzyme
lanes). The location of the band for the uncut protein 1 is shown.
Transcribed Image Text:Protein 1 Protein 2 Protein 3 + + + Wells Figure 2: Gel electrophoresis of proteins from Figure 1 (- enzyme lanes) as well as cut fragments from those proteins generated through treatment by chymotrypsin (+ enzyme lanes). The location of the band for the uncut protein 1 is shown.
Protein 1: yal glu glu gln arg tuR val leu ala his thr gln arg glu gln met val ala
Protein 2: yal glu glu gln arg trp val leu ala his thr gln phe'glu gln met val ala
Protein 3: yal thr gln phe glu leu arg glu trp xal ala met gln phe gln glu val ala
Figure 1: The amino acid sequences for three small proteins. Arrows mark the potential
cut sites for the enzyme chymotrypsin.
Transcribed Image Text:Protein 1: yal glu glu gln arg tuR val leu ala his thr gln arg glu gln met val ala Protein 2: yal glu glu gln arg trp val leu ala his thr gln phe'glu gln met val ala Protein 3: yal thr gln phe glu leu arg glu trp xal ala met gln phe gln glu val ala Figure 1: The amino acid sequences for three small proteins. Arrows mark the potential cut sites for the enzyme chymotrypsin.
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