ACTIVITY 10.8.1 Fill in the blanks to make the glycogenesis pathway correct. The first step in glycogenesis is the attachment of a-D-glucose to In this process, catalyzes the conversion of glucose 6-phosphate to glucose 1- phosphate. UDP-glucose pyrophosphorylase catalyze the conversion of into However, glycogen synthase, which catalyzes the formation of chain synthesis by using free glucose as an acceptor of UDP to fom UDP- linkage, cannot initiate the glucose. Thus, there is a fragment of glycogen from glycogen stores that are not totally depleted which will serve as absence of glycogen fragment, a protein called , in cells. In the can serve as acceptor of glucose residues from UDP-glucose. This enzyme then catalyzes the transfer of glucose from UDP-glucose to the glucosyl chain. This glucosyl chain wil be elongated by enzyme. Elongation of the glycogen chain includes the transfer of glucose from UDP-glucose to the of the growing chain. end With the action of branching enzyme, growing chain will be forming a branch thru a 1→ 6 glycosidic linkage. This enzyme removes a chain of six to eight glucosyl residues from the nonreducing end of the glycogen chain, breaking an a (1-4) bond to another residue on the chain, and attaches it to a non-terminal glucosyl residue by an a (1-6) linkage, thus functioning as a 4:6 transferase. the
ACTIVITY 10.8.1 Fill in the blanks to make the glycogenesis pathway correct. The first step in glycogenesis is the attachment of a-D-glucose to In this process, catalyzes the conversion of glucose 6-phosphate to glucose 1- phosphate. UDP-glucose pyrophosphorylase catalyze the conversion of into However, glycogen synthase, which catalyzes the formation of chain synthesis by using free glucose as an acceptor of UDP to fom UDP- linkage, cannot initiate the glucose. Thus, there is a fragment of glycogen from glycogen stores that are not totally depleted which will serve as absence of glycogen fragment, a protein called , in cells. In the can serve as acceptor of glucose residues from UDP-glucose. This enzyme then catalyzes the transfer of glucose from UDP-glucose to the glucosyl chain. This glucosyl chain wil be elongated by enzyme. Elongation of the glycogen chain includes the transfer of glucose from UDP-glucose to the of the growing chain. end With the action of branching enzyme, growing chain will be forming a branch thru a 1→ 6 glycosidic linkage. This enzyme removes a chain of six to eight glucosyl residues from the nonreducing end of the glycogen chain, breaking an a (1-4) bond to another residue on the chain, and attaches it to a non-terminal glucosyl residue by an a (1-6) linkage, thus functioning as a 4:6 transferase. the
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:АСTVITY 10.8.1
Fill in the blanks to make the glycogenesis pathway correct.
The first step in glycogenesis is the attachment of a-D-glucose to
In
this
process,
catalyzes the conversion of
glucose 6-phosphate to
pyrophosphorylase
glucose
1- phosphate. UDP-glucose
catalyze
the
conversion
of
into
However, glycogen synthase, which
catalyzes the fomation of_
chain synthesis by using free glucose as an acceptor of UDP to fom UDP-
_linkage, cannot initiate the
glucose. Thus, there is a fragment of glycogen from glycogen stores that are
not totally depleted which will serve as
absence of glycogen fragment, a protein called ,
serve as acceptor of glucose residues from UDP-glucose. This enzyme then
in cells. In the
can
catalyzes the transfer of glucose from UDP-glucose to the glucosyl chain. This
glucosyl chain will be elongated by
enzyme. Elongation of the glycogen chain includes the transfer of glucose from
UDP-glucose to the
end
of the growing chain.
With the action of branching enzyme,
growing chain will be forming a branch thru a 1→ 6 glycosidic linkage. This
enzyme removes a chain of six to eight glucosyl residues from the nonreducing
end of the glycogen chain, breaking an a (1-4) bond to another residue on the
chain, and attaches it to a non-terminal glucosyl residue by an a (1-6) linkage,
thus functioning as a 4:6 transferase.
the
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