PepMLM

Masked-language-model generation of linear peptide binders from target sequence alone.

Developer: Chatterjee Lab (Duke / Programmable Biology)

Not for commercial useNo commercial option at any price

Overview

Developer
Chatterjee Lab (Duke / Programmable Biology)
Commercial rights
Non-commercial
Commercial cost
No commercial option
Compute
Single GPU
Open weights
Yes
Last verified

Capabilities

Generates peptide binders without any structure. Input: the target protein sequence and the desired binder length; output: candidate peptide sequences, produced by masked-token generation conditioned on the target - cheap enough to run on a laptop-class GPU.

When to use it

Fast sequence-only peptide binder ideas when you have no structure at all. The access conditions - no patents on generated sequences, authorship on resulting papers - are disqualifying for most company work; read them before downloading.

Input / Output

Input
the target protein sequence and the desired binder length
Output
candidate peptide sequences, produced by masked-token generation conditioned on the target - cheap enough to run on a laptop-class GPU

Compute

Single GPU. Other tools with this compute profile →

Commercial Licensing

Commercial rights — may a company use it?

Not for commercial use

Licence as writtenModel card declares MIT, but access is gated behind terms that require non-commercial use

A genuine contradiction, read on the date shown: the Hugging Face card for ChatterjeeLab/PepMLM-650M declares license: mit, while the same card's gated-access fields make you tick 'I agree to use this model for non-commercial use ONLY', plus authorship, data-sharing and no-patent conditions. The GitHub repo publishes no LICENSE file at all. Those access terms are what you actually accept to obtain the weights, so treat it as non-commercial until the authors reconcile the two.

The licence limits use to non-commercial purposes; a company needs a separate agreement.

Commercial cost — is commercial use free of charge?

No commercial option at any price

No money changes hands, but the access agreement demands non-commercial use and rights concessions, so there is no commercial path. No commercial licence is offered.

Original sources — read on 15 Oct 2026
  1. huggingface.co/ChatterjeeLab/PepMLM-650M

Price and rights are separate: this panel is about money, the panel above is about permission.

  • Commercial OK ≠ Free of charge. A tool can be licensed for company use and still need a paid licence for a dependency (BindCraft → PyRosetta).
  • Free download ≠ Commercially licensed. Weights you can download at no cost may still forbid commercial use (AlphaFold 3).
  • Unverified ≠ Commercially permitted. If no published statement settles it, treat it as unknown — not as a yes.
  • Every component counts. Each status considers the code licence, the model-weights terms, required dependencies and any terms of use.

Model Weights

Open weights. A separate weights licence is Not documented as its own field; where weights carry different terms from the code, that is stated in the licence explanation above.

Dependencies

Not documented as a separate field. Any dependency that affects commercial use (for example a paid PyRosetta licence) is named in the licence and cost explanations above.

Official References

From the makers of FoldScout

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