PepDraw - App

Peptide Builder

Peptide Sequence

Enter single letter amino acid codes (A, G, L, F, etc.). Click in text to position cursor for insertion.

Place cursor in sequence, then click a modification to insert it.

Ser / Thr / Tyr — Plus/Pro

Lysine — Plus / Pro

Arginine — Pro

Pro / Met / Cys — Pro

Click to insert at cursor. Bracket notation inserted automatically.

Linear chains — Plus/Pro

β-Amino acids — Pro

Ring-bearing — Pro

HELM notation import/export coming soon.

Cross-Links Beta

Both positions must be Cys (C). 3D bridge geometry is approximate.

Cyclic Peptide Beta Enable cyclization

Head-to-tail (N→C) only. Ring geometry is not reflected in 3D structures.

Terminus Selection

N-Terminus

C-Terminus

pH Environment pH-aware

pH 7.0

★ Batch Processing — Plus+

Peptide Structure

Ready to visualize

Build your peptide sequence and click "Generate Visualization" to see the chemical structure

Generating structure...

Please wait while we render your peptide

Backbone

Sidechains

Color

Surface

Opacity

35%

Generating 3D structure…

Could not generate 3D structure for this sequence.

3D Viewer — Pro Feature

Generate interactive 3D conformers for any peptide sequence.

Upgrade to Pro

Predicted structures are for visualization only and may not reflect actual conformation. ESMFold works best with sequences similar to known proteins — random or heavily modified sequences fall back to RDKit conformer generation.

Customize Appearance

Stereochemistry Show Stereochemistry ★

Labels Show Amino Acid Labels

Atom Coloring CPK Color Monochrome

Rendering Style

Export Options

Format

Quality

★ Upgrade for SVG, PDF & high-resolution export

Peptide Properties

Hydrophobicity Scale

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Structural Representations ℹ️

SMILES:


                                Generate a peptide to see SMILES

InChI:


                                Generate a peptide to see InChI

InChIKey:


                                Generate a peptide to see InChIKey