Measured product lead custody receipt.
Pre-Laboratory Cell Pathway Design
Synthetic-Biology · zer0pa-synbio 0.1.0 · github.com/Zer0pa/Synthetic-Biology
An in-silico pipeline for engineering human-milk oligosaccharide biosynthesis in E. coli. Three HMO targets — 2'-FL, 3'-SL, and DSLNT — flow through a seven-stage design stack and exit as SBOL3-attested packets a wet lab can pick up.
Every packet carries an explicit scientific_valid: False flag. The design dossier is real and inspectable; the biology has not been confirmed at the bench, and the page does not claim it has.

“Synthetic-biology design work needs structural status. scientific validation stays separate.”
Design packets pass shape checks; the biology is not yet proven.
Synthetic-biology design today scatters across SBOL files, pathway hypotheses, COBRApy model dumps, structure-prediction outputs, and wet-lab planning notes. The bench team receives a folder of attachments and reconstructs intent from filenames, version drift, and email threads.
This pipeline ships a single packet per HMO target. 3/3 structural PASS covers 2'-FL, 3'-SL, and DSLNT through schema, boundary, license-class, and SBOL3 attestation checks; the same packet commits scientific_valid: False. A wet lab receives one object that names its targets, its constraints, and the line between what was designed and what was tested.
scientific_valid: False on every committed HMO packet.23 checks confirm three HMO design packets are well-formed, not bench-tested.
pytest tests/ · 0 regressions, 59 GPU calls skippedzer0pa-synbio · connected, stale pending fresh releasescientific_valid: False committed on every HMO targetStructural hashes repeat; scientific validity is not determined.
Each HMO design is hashed across three target shapes — 2'-FL, 3'-SL, and DSLNT — over envelope schema, boundary SHA, SBOL3 attestation, license-class enforcement, and the tiered check list. Re-running the pipeline produces the same SHA. That is what the 3/3 PASS measures.
Structural replay does not promote any biological claim. The scientific_valid: False flag stays committed on every packet until a wet-lab result is independently produced and attached under a separate validation contract. Determinism is per-envelope-shape, structural only.
The public 0.1.0 PyPI surface remains stale-pending while HMO packets at validation/hmo-seed-evidence/{2pFL,3pSL,DSLNT}/RESULT.md report scientific_valid: False in stub mode. The structural check is real; wet-lab HMO synthesis, RFdiffusion closure, and a fresh release are still ahead.
FIVE PATHS FROM ONE design packet.
The ambition is a credible front end for synthetic-biology design — one packet per pathway, carrying its sequence context, boundary constraints, license class, naming history, and validity status. A bioengineer should be able to pick it up on a Tuesday morning and walk into the lab knowing exactly what is designed and what is not yet proven.