Biology SL
Biology SL
4
Chapters
553
Notes
Theme A - Unity & Diversity
Theme A - Unity & Diversity
Theme B - Form & Function
Theme B - Form & Function
Theme C - Interaction &  Interdependence
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Theme D - Continuity & Change
IB Resources
Theme C - Interaction &  Interdependence
Biology SL
Biology SL

Theme C - Interaction & Interdependence

Mechanism-Based Inhibition Understanding Its Irreversible Impact on Enzymes

Word Count Emoji
401 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

🔐 Unlocking the Concept: Sometimes, sneaky molecules can halt enzymes from doing their job. These molecules are known as inhibitors. Some just pause the action (reversible), while others shut it down for good (irreversible).

Mechanism-based inhibition 🚫

  • What is it? It's when an inhibitor forms a permanent bond with an enzyme, making it useless forever! It's like gluing a key inside a lock.
  • Why should we care? These inhibitors can be harmful. Each inhibitor can knock out one enzyme. If they knock out a vital enzyme, it can be fatal.
  • Real-world example: Chemical weapons! Super dangerous because they use mechanism-based inhibition. Also, antibiotics like penicillin. But don't worry, penicillin is our friend. 😇

Heavy metals - not the nusic 🤘🚫

  • Role: Heavy metals like mercury and lead are irreversible enzyme inhibitors. They don't pick favorites; they bond with a lot of enzymes.
  • How? They like to stick to -SH groups in an amino acid called cysteine.
  • Consequences: Toxic! It's why we say, "Keep them out of the environment and our bodies!"

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IB Resources
Theme C - Interaction &  Interdependence
Biology SL
Biology SL

Theme C - Interaction & Interdependence

Mechanism-Based Inhibition Understanding Its Irreversible Impact on Enzymes

Word Count Emoji
401 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

🔐 Unlocking the Concept: Sometimes, sneaky molecules can halt enzymes from doing their job. These molecules are known as inhibitors. Some just pause the action (reversible), while others shut it down for good (irreversible).

Mechanism-based inhibition 🚫

  • What is it? It's when an inhibitor forms a permanent bond with an enzyme, making it useless forever! It's like gluing a key inside a lock.
  • Why should we care? These inhibitors can be harmful. Each inhibitor can knock out one enzyme. If they knock out a vital enzyme, it can be fatal.
  • Real-world example: Chemical weapons! Super dangerous because they use mechanism-based inhibition. Also, antibiotics like penicillin. But don't worry, penicillin is our friend. 😇

Heavy metals - not the nusic 🤘🚫

  • Role: Heavy metals like mercury and lead are irreversible enzyme inhibitors. They don't pick favorites; they bond with a lot of enzymes.
  • How? They like to stick to -SH groups in an amino acid called cysteine.
  • Consequences: Toxic! It's why we say, "Keep them out of the environment and our bodies!"

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology SL. Subscribe now and get closer to that 45 🌟