2.9.2 Flashcards
Allosteric regulation occurs when
a molecule binds to an area other than the active site of the enzyme and prevents it from assuming the conformation necessary to bind substrate.
Which type of inhibitor always binds to the active site of an enzyme?
competitive inhibitor
Allosteric inhibition involves
The stabilization of an enzyme in an inactive form.
Which of the following statements regarding allosteric regulation is true?
Allosteric enzymes are often multi-subunit enzymes.
Molecules that are similar in shape to an enzyme substrate but are nonreactive if they bind to the active site are
competitive inhibitors
True or false?
An allosteric site is a binding region on an
enzyme other than the active site.
true
In the absence of an inhibitor or activator an enzyme that is allosterically controlled will
fluctuate between being active and inactive.
Allosteric regulation is a type of enzyme regulation that uses
molecules to inhibit or activate the enzyme by binding to it
at a
place other than the
active site.
__________ are substances that bind to the enzyme and keep
it in
an active state.
Activators
__________ are molecules that bind to the enzyme to keep it
in
an inactive state.
Inhibitors