Problem 5. Suppose a cell expresses HK-I and 5 mM is the concentration of glucose in the blood. Compare the cellular concentration of glucose (relative to 5 mM) based on the G6P concentration in the cell being low or high.

Principles Of Pharmacology Med Assist
6th Edition
ISBN:9781337512442
Author:RICE
Publisher:RICE
Chapter1: Numerals And Fractions
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Problem 5. Suppose a cell expresses HK-I and 5 mM
is the concentration of glucose in the blood. Compare
the cellular concentration of glucose (relative to 5
mM) based on the G6P concentration in the cell being
low or high.
Transcribed Image Text:Problem 5. Suppose a cell expresses HK-I and 5 mM is the concentration of glucose in the blood. Compare the cellular concentration of glucose (relative to 5 mM) based on the G6P concentration in the cell being low or high.
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Step 1

HK-1 is a type of hexokinase encoded by the HK1  gene. This enzyme produces glucose-6-phosphate by phosphorylating glucose. It can phosphorylate other hexoses too. Conversion of glucose to glucose-6-phosphate initiates the process of glycolysis which is associated with the production of energy-yielding molecules. Hexokinase is present on the mitochondrial outer membrane.

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