Chapter 8: 7P (page 243)
Some bacteria produce thiosugars, which contain a C—S covalent bond, such as 2-deoxy-2-thio-β-D-glucose. Draw the structure of this sugar.
Short Answer
The structure of the sugar is:
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Chapter 8: 7P (page 243)
Some bacteria produce thiosugars, which contain a C—S covalent bond, such as 2-deoxy-2-thio-β-D-glucose. Draw the structure of this sugar.
The structure of the sugar is:
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Brown algae produce alginate, a polysaccharide containing β-D mannuronate linked 1→4 to its C5 epimer α-L-guluronate. Draw the structure of an alginate disaccharide.
Bacteria that live in the large intestine metabolize glycocholic acid
using amidases and hydroxylases.
(a) Draw the reaction product.
(b) Compare the solubility of the product and glycocholic acid.
(c) Could the change in the bile acid’s solubility make it less toxic to bacteria?
Summarize the features of an α helix and a parallel and antiparallel β sheet.
Draw a Fischer projection of L-fucose. L-Fucose is the 6-deoxy form of which L-hexose?
The SHP-2 protein participates in insulin signalling through its indirect activation by the insulin receptor (Fig. 13-31), a receptor tyrosine kinase. Yet SHP- 2 is a protein tyrosine phosphatase. Is this a paradox? Explain.
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