Protease Mechanisms 3
Interactive Video
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Science, Biology, Chemistry
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University
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Practice Problem
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary focus of the video regarding proteases?
The structure of proteases
The mechanism of N-terminal and C-terminal proteases
The industrial applications of proteases
The history of protease discovery
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the unique feature of the hypothetical enzyme 'nice'?
It is found in the stomach
It is a cysteine protease
It targets N-terminal peptide bonds near isoleucine residues
It targets C-terminal peptide bonds
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of protease is more common according to the video?
Cysteine proteases
Serine proteases
Aspartate proteases
Metalloproteases
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in the mechanism of serine proteases?
Protonation of the nucleophile
Deprotonation of the nucleophile
Formation of a disulfide bond
Hydrolysis of the peptide bond
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role does histidine play in the serine protease mechanism?
It acts as a nucleophile
It forms a covalent bond with the substrate
It stabilizes the substrate
It deprotonates the serine residue
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an acyl-enzyme intermediate characterized by?
A disulfide bridge
A covalent bond with water
SP2 geometry
SP3 geometry
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can a serine protease be converted into a cysteine protease?
By replacing the serine with a threonine
By replacing the serine with a sulfur atom
By adding more histidine
By changing the pH of the environment
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