What gives an enzyme specificity?

Enzymes are typically globular proteins that catalyse a specific reaction. Being proteins, enzymes have a well-defined overall conformation (shape), or 'tertiary structure', which allows formation of a catalytic 'active site'. This active site has a shape that is 'complementary' to its substrate, i.e. it can specifically recognise a molecule that fits into the active site, and convert this molecule into the product(s) of the reaction while excluding other molecules that do not fit the active site. This has been described as the 'lock and key' mechanism of enzyme activity, which leads to formation of the 'enzyme-substrate complex', and subsequent release of the reaction product(s).

TH
Answered by Tom H. Biology tutor

5263 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

What happens during eutrophication?


Explain how the chromosome number is halved during meiosis.


Describe the structure of starch. How does this structure make starch well suited for energy storage?


What is the difference between competetive and non-competetive inhibitors?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences