A biomanufacturing knowledge graph for MaterialHack, built on TuringDB. It models bioplastic production as one connected graph in two layers:

1. Metabolic / retrosynthesis layer — compounds, reactions and enzymes that turn feedstocks into biomaterial monomers (the RetroRules-style question: how do I biosynthesise this molecule?).
2. Property / function layer — the polymers those monomers form, and the functions an engineer designs by (biodegradable, heat resistant, flexible…).

The two layers meet at the monomer compound (joined on InChIKey), so you can ask questions that cross both at once — e.g. "biodegradable, heat-resistant materials whose monomer I can make from a given feedstock."

TuringDB is a high-performance, in-memory column-oriented graph database for analytical, AI-driven and read-intensive workloads. It speaks a subset of OpenCypher, loads and queries large graphs in seconds, and has Git-style version control built in — branch the graph, run "what-if" edits in isolation, and time-travel through commit history with snapshot isolation. That versioning is what makes it a good fit for exploring adaptive process design: you can fork a scenario, change it, and compare.

A ready-to-load graph plus the scripts that generate it at two sizes, and runnable examples.

materialhack-turingdb/
├── README.md                       ← you are here
├── requirements.txt                ← turingdb, rdkit, pandas
├── NOTICE                          ← third-party data attribution (all CC-BY)
├── schema/SCHEMA.md                ← node/edge model + the InChIKey join + the cofactor rule
├── data/
│   ├── build_seed_data.py          ← generates the curated seed (RDKit InChIKeys)
│   ├── expand_from_retrorules.py   ← builds the real-data graph (demo slice, or --full / --rich)
│   ├── retrorules_slice/           ← curated seed: metabolic layer (compounds, reactions, enzymes)
│   ├── property_graph/             ← curated seed: property layer (polymers, properties)
│   ├── retrorules_expanded/        ← committed real-data demo slice (~6k nodes)
│   ├── retrorules_full/            ← full ~1.5M-node build (git-ignored; see release)
│   └── external/                   ← raw RetroRules/MetaNetX dumps (git-ignored)
├── load/
│   ├── load_graph.py               ← load seed (+expanded) into TuringDB, or emit .cypher
│   ├── load_full_jsonl.py          ← bulk-load the full graph via LOAD JSONL
│   ├── nodes.jsonl / edges.jsonl   ← seed import files
│   └── cypher/seed.cypher          ← static Cypher build script
└── examples/
    ├── EXAMPLES.md                 ← the core use cases explained
    ├── queries.cypher              ← runnable queries
    └── versioning_demo.py          ← Git-style branching demo

Why it's shaped this way. The committed seed and demo slice are deliberately small and fully open, so the repo clones and runs in seconds. Every compound's join key is an RDKit/MetaNetX InChIKey, so the metabolic and property layers resolve to the same node. Crucially, ubiquitous cofactors (water, ATP, NAD(P)(H), CoA, quinones…) sit on a separate USES_COFACTOR edge, so multi-hop traversal follows real carbon chemistry instead of teleporting through hubs (details in schema/SCHEMA.md).

Same schema, same join key, same cofactor-aware backbone — the small graph is just the big one zoomed in around the four monomers.

Both carry the same 6 polymers (PHB/PHBV, PLA, PGA, PBS, PCL) and 6 property nodes, wired to the monomers — so the cross-layer query works at either size.

MaterialHack's Blue-Sky Track is about adaptive manufacturing for waste valorisation: waste streams are varied and inconsistent, and the challenge is designing processes that turn that messy input into reliable, high-value output. A biosynthetic-route graph is a natural substrate for that — it's a map of which molecules can become which materials, and by what routes.

• Waste → value routing. Match the molecules in a waste stream (by InChIKey) to Compound nodes, then traverse the SUBSTRATE_OF/PRODUCES backbone to see which valuable monomers (and therefore polymers) they can reach, and via which enzymes (CATALYZES, by EC number).
• Design-by-property, backwards. Start from a target — "biodegradable + heat-resistant" — find the polymers with those Property nodes, get their monomer, and ask what feedstocks/waste compounds can biosynthesise it. This is the headline cross-layer query, run in reverse.
• Adaptivity / robustness. Because many alternative reaction paths reach the same monomer, you can pick the route that uses the enzymes and inputs you actually have — and adapt when the waste composition shifts. Use TuringDB branches/commits to model "what if this feedstock or enzyme is unavailable?" and compare routes side by side.
• Host / enzyme selection. Reactions carry EC numbers and RetroRules templates (SMARTS) — a starting point for choosing enzymes or engineering a production strain.

Ideas to extend it: add Paper nodes (MENTIONS, keyed on DOI/PMID) for a GraphRAG assistant grounded in the same graph; sample molecular graphs from Compound/Polymer to train a property-prediction GNN; layer in real experimental property values (e.g. PoLyInfo) keyed on the same InChIKey.

# 1. install the engine, SDK and deps (a virtualenv is recommended)
pip install -r requirements.txt          # turingdb, rdkit, pandas

# 2. (optional) regenerate the seed data — already committed
python data/build_seed_data.py

# 3. start TuringDB — REST API on http://localhost:6666
turingdb -demon                          # background daemon (or `turingdb` for foreground)

# 4. load the committed demo graph (curated seed + real-data slice, ~6k nodes)
python load/load_graph.py --host localhost --port 6666 --graph biomaterials

# 5. run the example queries / versioning demo
python examples/versioning_demo.py       # see also examples/queries.cypher

Query it from Python:

from turingdb import TuringDB

db = TuringDB(host="http://localhost:6666")
db.set_graph("biomaterials")

# biodegradable, heat-resistant materials and the monomer you'd biosynthesise
db.query("""
    MATCH (m:Compound)-[:POLYMERIZES_TO]->(p:Polymer)-[:HAS_PROPERTY]->(pr:Property)
    RETURN m.name, p.abbrev, pr.name
""")

No server handy? Emit a static Cypher script instead: python load/load_graph.py --emit-cypher load/cypher/seed.cypher.

The full metabolic graph is too large to commit, so it's available two ways.

A. Download the prebuilt graph from the v1.0 release (no source download, no rebuild):

# slim (512MB, loads on 8GB RAM) — recommended:
curl -L -o graph.jsonl \
  https://github.com/turing-db/materialhack-turingdb/releases/download/v1.0/graph.jsonl
# or rich (829MB, SMILES on every compound, needs ~16GB+ RAM): graph_full_props.jsonl

cp graph.jsonl ~/.turing/data/
turingdb -demon
python load/load_full_jsonl.py --graph biomaterials   # runs LOAD JSONL via the SDK

B. Build it yourself from the MetaNetX/RetroRules dumps in data/external/:

python data/expand_from_retrorules.py --full          # add --rich for full SMILES
turingdb -demon
python load/load_full_jsonl.py --graph biomat_full

This yields >1.5M nodes: ~1.5M Compound + ~72k Reaction + ~5k Enzyme, with ~360k edges. Most compounds are an isolated catalogue; the connected, traversable core is ~47k compounds + ~72k reactions. Multi-hop stays meaningful because currency metabolites and structureless participants are routed onto USES_COFACTOR, not the carbon backbone. The four monomers (PHB/PHBV, PLA, PGA, PBS) are wired into the property layer so the cross-layer query works at full scale too.

This repo commits only small, openly-shareable derived data. The raw source dumps are large and stay out of git (download them from the providers):

The open flat files (retrorules_metanetx.csv, chem_prop.tsv, reac_prop.tsv) go in data/external/; expand_from_retrorules.py derives the committed slice in data/retrorules_expanded/ (and the full build).

Dataset licenses (the two sources used here):

• RetroRules v3.0.0 (reaction templates) — CC BY 4.0. RetroRules integrates upstream sources (MNXref, Rhea, ChEBI, UniProt, USPTO) that may carry their own terms — check those before commercial redistribution.
• MetaNetX / MNXref v4.5 (compound & reaction properties) — CC BY 4.0, © 2011 SystemsX / SIB Swiss Institute of Bioinformatics.

Rhea, ChEBI and UniProt (referenced via the above) are also CC-BY. If you redistribute the derived data, keep the attribution — see NOTICE for the full citations. Dataset and schema details are in each data/*/README.md and schema/SCHEMA.md.