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Free RNA Structure Diagram Generator Online

Draw an RNA strand, a stem-loop or a tRNA-style schematic. Edit nucleotide and structure labels, specify pairing and export a clear SVG or PNG.

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3 figure engines · 500+ templatesEvery label editable · 60+ color schemesEditable PPTX · Layered SVG · 8K PNG / JPG

RNA structure schematic editor

Draw a single strand, nucleotide components, an illustrative stem-loop or tRNA outline. Only supplied base pairs are drawn; sequence folding and energy prediction are not performed.

Use one-based indices, for example 1-12, 2-11. A nucleotide can belong to only one pair. Only A–U, G–C and G–U pairs are supported.

Edit diagram labels

Free RNA Structure Diagram Generator Online— templates & examples

Updated

Free scientific tools

Free RNA Structure Diagram Generator Online

Draw an RNA strand, a stem-loop or a tRNA-style schematic. Edit nucleotide and structure labels, specify pairing and export a clear SVG or PNG.

An RNA structure diagram represents an RNA strand, its nucleotide labels and any explicitly specified base pairs in a structural schematic. Draw an RNA strand, a stem-loop or a tRNA-style schematic. Edit nucleotide and structure labels, specify pairing and export a clear SVG or PNG.

Open the free tool
RNA structure schematic with nucleotide labels and explicit pairing
  • Label an RNA strand
  • Draw an explicit stem-loop
  • Explain RNA composition and form
  • Export structural explanations

RNA Structure Diagram Generator Online Features

Use SciFig to work with the specific inputs, labels and exported outputs described below.

Label an RNA strand

SciFig’s RNA structure diagram generator uses RNA nucleotide notation, including U rather than DNA’s T. Create a labeled strand view to introduce the sequence direction and nucleotide identities. Keep the strand explanation separate from the paired-structure views when teaching the relation between sequence and structure.

  • Use RNA nucleotide letters
  • Identify strand direction
  • Edit the structure labels
Label an RNA strand

Draw an explicit stem-loop

Use a finite stem-loop arrangement and the pairings provided in its settings. The paired stem and unpaired loop are visually distinct. SciFig draws the requested pairing pattern as a schematic rather than inferring an energetically preferred fold from the nucleotide sequence.

  • Distinguish stem and loop
  • Use explicit pairings
  • Retain nucleotide labels
Draw an explicit stem-loop

Explain RNA composition and form

Use the nucleotide-composition view to distinguish the ribose, phosphate and nucleobase labels. Switch to the finite tRNA-style cloverleaf to show a different schematic arrangement of the entered sequence and explicit pairings. SciFig keeps sequence direction and a structure caption with these views, linking molecular vocabulary with the selected diagram.

  • Label ribose, phosphate and base
  • Select a tRNA-style cloverleaf
  • Retain sequence direction and pairings
Explain RNA composition and form

Export structural explanations

Edit the title and annotations, choose a supported view and download SVG or PNG. Save JSON settings when the figure needs to be reopened for another class or presentation. The local RNA structure diagram preserves the explicit configuration you selected.

  • Edit annotations and colors
  • Download SVG or PNG
  • Reopen JSON settings
Export structural explanations

How to Create the Diagram

Follow the local controls to prepare the rna structure diagram from your input.

  1. Choose the RNA view

    Start with a strand, stem-loop or tRNA-style preset. Select the view based on whether the figure explains nucleotide sequence, an explicit pairing pattern or an annotated structural outline.

  2. Enter RNA notation and labels

    Use RNA letters and edit the structural annotations. Keep U for uracil rather than substituting T. When editing a pairing pattern, specify the partners explicitly so the drawing reflects the intended schematic.

  3. Adjust the structure presentation

    Set the title and choose the visible labeling and color options. Keep the stem distinguishable from the loop, or use the nucleotide-composition view to explain ribose, phosphate and base. Sequence-direction labels and the pairing caption remain with the selected structural schematic.

  4. Save and download the schematic

    Export SVG for a scalable RNA figure or PNG for a slide. Save JSON settings to reopen the same sequence, pairings and annotations. A revised configuration produces a new diagram without a separate folding service.

Ways to Use the Diagram

Choose a focused figure for the question and document you are preparing.

Single RNA strand with nucleotide labels

Introduce RNA nucleotides

Use the strand view to identify RNA nucleotide letters and direction. The schematic gives learners a readable sequence reference before discussing base pairing or more complex structural arrangements.

Explore this example
RNA stem-loop with paired stem and unpaired loop

Explain a stem-loop

Show a paired stem and an unpaired loop in one panel. Explicit partner connections help students see which nucleotides participate in the selected pairing pattern without presenting the drawing as a folding prediction.

Explore this example
Finite tRNA-style cloverleaf structural schematic

Introduce the tRNA-style outline

Use the finite tRNA-style cloverleaf to introduce an RNA structural outline. The entered sequence, explicit pairings and direction labels provide the information shown on this view. Pair it with the nucleotide-composition panel when introducing the molecular vocabulary.

Explore this example
RNA structure schematic with nucleotide labels and explicit pairing

Prepare a molecular-biology slide

Choose the supported RNA view that matches the point being taught. An SVG export can sit beside a DNA structure figure while preserving the distinct nucleotide notation used by each molecule.

Explore this example
RNA stem-loop with paired stem and unpaired loop

Describe an explicit pairing model

Enter the pairing pattern used in a conceptual explanation and show it with the nucleotide labels. The resulting schematic records that stated model, keeping the requested pairings separate from a computational energy prediction.

Explore this example
RNA nucleotide composition schematic using U rather than T

Maintain consistent lesson figures

Save the settings for an RNA diagram used in both slides and notes. Reopen the configuration to change the annotations or supported view, then export the revised panel with the same structural vocabulary.

Explore this example

How Researchers Use SciFig

I needed an RNA structure diagram based on known pairings, not a folding prediction. I entered the short sequence and explicit base-pair indices, then checked the dashed connections in the preview. The SVG gave my lab-meeting slide a clear stem-loop schematic, and the JSON preserved exactly which pairs I had supplied.

Alice Morgan

RNA Biology Doctoral Researcher · University of Cambridge

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