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Biochemistry 6th Edition by Reginald Garrett,Charles Grisham
Edition 6ISBN: 978-1305577206Biochemistry 6th Edition by Reginald Garrett,Charles Grisham
Edition 6ISBN: 978-1305577206 Exercise 8
Determining the branch points and reducing ends of amylopectin
A 0.2-g sample of amylopectin was analyzed to determine the fraction of the total glucose residues that are branch points in the structure. The sample was exhaustively methylated and then digested, yielding 50 ?mol of 2,3-dimethylglucose and 0.4 ?mol of 1,2,3,6-tetramethylglucose.
a. What fraction of the total residues are branch points?
b. How many reducing ends does this amylopectin have?
A 0.2-g sample of amylopectin was analyzed to determine the fraction of the total glucose residues that are branch points in the structure. The sample was exhaustively methylated and then digested, yielding 50 ?mol of 2,3-dimethylglucose and 0.4 ?mol of 1,2,3,6-tetramethylglucose.
a. What fraction of the total residues are branch points?
b. How many reducing ends does this amylopectin have?
Explanation
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a. The total number of moles of glucose ...
Biochemistry 6th Edition by Reginald Garrett,Charles Grisham
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