What are cofactors and coenzymes? AS Biology

Watch this thread
rm_27
Badges: 11
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#1
Report Thread starter 7 years ago
#1
^^^^The title. What do they do? Why are they important?

Thank you!
0
reply
kawehi
Badges: 3
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#2
Report 7 years ago
#2
(Original post by rm_27)
^^^^The title. What do they do? Why are they important?

Thank you!
Cofactors: chemical compound that increase rate of enzyme reactions, as they allow the enzyme-substrate complexes to form more easily
Example: Amylase catalyses the breakdown of maltose molecules. This enzyme will function properly only if chloride ions arepresent. Without the chloride ions, amylase cannot catalyse the reaction

Coenzymes: metalloorganic, non-protein molecules that bind before or with the substrate. They can be prosthetic groups if they are found permanently within the enzyme.
Example: The enzyme carbonic anhydrase contains a zinc-based prosthetic group. This enzyme is a vital component in red bloodcells, where it is involved in catalysing the combination of water and carbon dioxide to give carbonic acid. This is animportant reaction that enables carbon dioxide to be transported in the blood

All you need to know is that they are vital for the actual reaction of the enzyme with the substrate. You can think of them as trying to put half a puzzle piece (the enzyme) together with another puzzle piece. They aren't going to fit unless you can find the other half (the cofactor/enzyme), so you won't get a reaction.
1
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest

How did The Student Room help you with your university application?

Talking to current university students (12)
17.65%
Talking to peers going through the same thing (24)
35.29%
Speaking to student ambassadors from the universities (5)
7.35%
Speaking to staff members from universities (1)
1.47%
Using the personal statement builder, library or helper service (7)
10.29%
Reading articles about what steps to take (14)
20.59%
Learning about/speaking to Student Finance England (2)
2.94%
Something else (tell us in the thread) (3)
4.41%

Watched Threads

View All