3D Golgi Apparatus Trafficking Simulation
Cargo modification, sorting and dispatch

Golgi trafficking laboratory

Mission: receive ER cargo, modify it across Golgi cisternae, attach address tags, and dispatch it to the correct destination.
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Live measurements

Processing stageReady
Golgi position0%
Tags added0
Packages sorted0

A COPII carrier is approaching the cis face with newly made ER cargo. Press Start to begin processing.

Maturation graph

Golgi positionSorting readiness

Microscope & camera

Focus: noneTap a structure
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Drag to pan. Wheel or pinch to zoom. Tap cis face, cis/medial/trans cisternae, Golgi enzymes, cargo, TGN, COPI, COPII, or clathrin vesicles.

Teacher / Demo tools

Interactive teacher-led lesson

After a five-second hook, each sentence changes the active structure, arrow, camera, and microscopic process before the lesson continues.

Ready. Narration will not start automatically.
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Ready for cellular transport

What to watch: press Start Complete Lecture.

The lesson begins only when you choose to start it.

Learning objectives

  • Distinguish cis, medial, trans, and TGN regions.
  • Trace cargo modification across the Golgi stack.
  • Compare COPII delivery, COPI retrieval, and clathrin sorting.
  • Explain cisternal maturation and enzyme recycling.
  • Predict how enzyme activity and sorting accuracy affect delivery.

Key concepts demonstrated

The Golgi is a polarized processing system. Cargo enters at the cis side, receives ordered chemical modifications, and is separated at the trans-Golgi network. Forward cisternal maturation works together with backward COPI recycling.

Suggested experiments

  • Lower enzyme activity and compare cargo maturity.
  • Increase cargo load and observe processing time.
  • Lower sorting accuracy and watch destination selection.
  • Compare COPI retrieval with clathrin lysosome sorting.

Questions for exploration

  • Why must Golgi enzymes remain in particular regions?
  • How can cargo move forward while enzymes recycle backward?
  • Why are address tags essential for lysosomal enzymes?

Real-world applications

Golgi defects can disrupt hormone secretion, immune proteins, connective tissue, and lysosome function. Scientists study Golgi pathways to understand congenital glycosylation disorders and protein-targeting diseases.

Common misconceptions

  • The Golgi does more than package cargo; it chemically modifies it.
  • All cargo does not leave in the same kind of vesicle.
  • Traffic is not only forward; COPI retrieval is essential.
  • The cis and trans faces are structurally and functionally different.

Golgi trafficking challenge

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