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Gibson Assembly Diagram — Free Mechanism Editor

Keep overlaps, 3′ overhangs, internal gaps and repaired junctions consistent across an assembly explanation.

Gibson assembly diagram editor

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Gibson Assembly Diagram — Free Mechanism Editor— templates & examples

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Gibson Assembly Diagram — Free Mechanism Editor

Keep overlaps, 3′ overhangs, internal gaps and repaired junctions consistent across an assembly explanation.

A Gibson assembly diagram explains how overlapping DNA fragments are joined through exonuclease treatment, annealing, polymerase filling and ligation. SciFig provides an editable teaching schematic of those stages, with defined strand direction and corresponding labels. Choose a mechanism stage and adapt its component names without changing the defined strand relationships. Create a labeled reference or a numbered exercise, export SVG or PNG, and save the current stage as a project.

Overlapping DNA fragments compared with the annealing stage and internal gaps
  • Begin with overlapping DNA fragments
  • Explain the 5′ exonuclease step
  • Compare annealing and repair
  • Export a mechanism teaching set

From Overlaps to Joined Strands

Follow strand direction and enzyme action through overlapping, resected, annealed and repaired views.

Begin with overlapping DNA fragments

The starting view shows three double-stranded fragments with terminal overlap regions. The strands run antiparallel, with separate labels for their 5′ and 3′ ends. These are teaching fragments rather than a submitted DNA sequence, so the picture can concentrate on orientation and the role of the shared terminal regions. Gibson assembly cloning uses terminal overlaps between adjacent fragments.

  • Three double-stranded fragments
  • Antiparallel end labels
  • Visible overlap regions
Explore overlapping fragments

Explain the 5′ exonuclease step

The exonuclease view removes material from the 5′ ends and leaves 3′ single-stranded extensions. The end anchors move to the remaining strand endpoints in that view. A separate overhang marker helps distinguish the exposed extension from the original fully double-stranded overlap. The Gibson assembly mechanism begins with 5′ resection that exposes complementary 3′ overhangs.

  • 5′ end resection
  • 3′ overhangs
  • Stage-specific end positions
Examine exonuclease resection

Compare annealing and repair

Complementary overlap regions align in the annealing view, with internal gaps still visible. The repair view fills those gaps from available 3′ ends and marks sealed junctions. The two views have different geometry, making polymerase filling and ligase sealing visible stages of the mechanism.

  • Complementary overlap pairing
  • Internal gaps after annealing
  • Gap filling and nick sealing
Compare annealing and repair

Export a mechanism teaching set

Switch among the starting fragments, exonuclease, annealing and repair views. Each supports labeled, numbered, blank and answer modes. Move the text labels, export SVG or PNG, and save the current project to restore its stage and annotation settings.

  • Four mechanism stages
  • Four annotation modes
  • SVG, PNG and JSON projects
Prepare the mechanism set

How to Illustrate the Assembly Stages

Choose the mechanism stage, edit its labels and export a reference, exercise or corresponding answer.

  1. Choose the structure or stage

    Open the local editor and start with its labeled view. For an experiment or mechanism with multiple stages, choose the condition that matches the explanation you are preparing.

  2. Edit the structure labels

    Select a part, edit its name and move the label endpoint with the pointer or coordinate controls. Its structure anchor stays attached to the defined component.

  3. Prepare the practice version

    Switch to numbered, blank or answer mode as needed. The practice figure and its answer list use the same part order for the selected structure or stage.

  4. Download or save the project

    Download SVG or PNG from the current valid figure. Save project JSON when you want to restore the labels, positions and display mode for another session.

Assembly Figures for Molecular Biology

Use the strand mechanism for cloning introductions, orientation exercises and protocol illustrations.

Gibson assembly diagram: overlap fragments

Molecular cloning introduction

Use the four stages to introduce the roles of exonuclease, polymerase and ligase. Identify the strand ends before explaining which end is resected or extended.

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Gibson assembly diagram: exonuclease overhangs

DNA assembly mechanism slide

Place annealing and repair exports beside each other. Use the visible internal gaps and filled junctions to explain the transition.

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Gibson assembly diagram: annealing gaps

Strand direction exercise

Export a numbered starting or exonuclease view and ask learners to identify 5′ ends, 3′ ends and overhangs. Match the answers to that selected stage.

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Gibson assembly diagram: repaired junctions

Protocol overview illustration

Include a mechanism figure beside an assembly protocol. Keep experimental sequences, reagent amounts and incubation settings in the protocol itself.

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Overlapping DNA fragments compared with the annealing stage and internal gaps

Plasmid planning discussion

Use this figure to explain how fragments join, then use a plasmid map to discuss the resulting circular construct and its features. The two figures serve different tasks.

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Gibson assembly diagram: overlap fragments

Lab presentation figure

Rename the schematic fragments and export vector artwork for a presentation. Save the project to preserve the chosen mechanism stage and label placement.

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Worked Examples Prepared with SciFig

The starting Gibson assembly diagram shows three double-stranded fragments with terminal overlap regions. I kept the strand-end labels visible to establish antiparallel orientation before the enzyme steps. The figure is a mechanism example, so the colored fragments communicate direction and overlap without implying sequence validation.

SciFig · Overlapping fragments

Figure preparation · SciFig

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