An accurate and intelligent protein structure prediction platform. Accelerate drug discovery with next-generation AI models.
Existing Pipeline 1 & 2 from foldexa.bio (shown above this section)
Pipeline 1 - CDR Redesign (DiffAb) - 4-step - ~3h
Pipeline 2 - De Novo Scaffold (RFdiffusion) - 4-step - ~5h
The first self-service platform that designs, validates, and scores therapeutic antibodies and engineered enzymes - with a closed-loop that gets smarter from your wet-lab results.
3-5 days
From PDB upload to ranked, developability-scored candidates. No library screening. No animal immunization.
$3,000
100+ candidates designed, 12-metric developability scored, Boltz-2 structure predicted, lab-ready sequences.
100%
Hit rate on anti-Tie2. 10/10 designs passed. Published in mAbs (2025). pLDDT 0.96, ddG -25.75.
DiffAb / RFdiff
RL-Guided Gen
Pre-trained weights
ProteinMPNN
Sequence Opt.
Pre-trained weights
Boltz-2 + Protenix
Structure + Affinity
Pre-trained ensemble
12-Metric Cascade
Developability
Jain et al. benchmarks
Pareto Ranking
Multi-objective
Evidence-based wts
Wet Lab -> RL
Feedback Loop
CPU model, 10s
6-step pipeline - All models use pre-trained weights (inference only) - RL feedback via lightweight CPU model
The problem
Cannot afford $500K CRO campaigns. Investors want de-risked candidates before committing to wet lab.
What Foldexa gives you
100+ validated candidates for $3K. Boltz-2 affinity + 12-metric scores for investor decks.
The problem
Need therapeutic antibodies on grant budget. Publication deadline in 6 months.
What Foldexa gives you
Publishable structure predictions in a week. DiffAb, Boltz-2, ProteinMPNN all citable.
The problem
95% developability failure rate. Late-stage candidates fail on immunogenicity, aggregation.
What Foldexa gives you
Every candidate pre-screened against 137 clinical-stage mAbs (Jain PNAS 2017).
The problem
PET-degrading enzymes too slow to screen for thermostability variants.
What Foldexa gives you
Enzyme mode: Tm optimization, active site conservation, solubility. 200 variants/round.
$3,000 per target - Results in 3-5 days - No GPU infrastructure needed
Foldexa was created by four enthusiasts: Azamat, Kanat, Issabek and Rauan with a vision to democratize protein science.
We combine state-of-the-art diffusion models (DiffAb, RFdiffusion) with AlphaFold2 to create a seamless pipeline for de novo antibody design.

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Anti-Tie2 CDR redesign · AF2-multimer predicted metrics · In Silico metrics · February 2026
Lower = higher confidence in binding pose
Foldexa.bio
Best (#1)
Foldexa.bio
Top-10 avg
Reference
hTAAB-hTie2
Chai-2
(median)
Angstroms (Å) — lower is better
Foldexa.bio
Best (#1)
Foldexa.bio
Top-10 avg
Reference
hTAAB-hTie2
DiffAb
(scRMSD)
kcal/mol — more negative = stronger binding
Foldexa.bio
Best (#4)
Foldexa.bio
Top-10 avg
RFdiffusion
(Bennett)
Reference
hTAAB-hTie2
| Feature | Foldexa.bio | RFdiffusion | DiffAb | Chai-2 |
|---|---|---|---|---|
| CDR redesign | ✓ All CDRs | ✓ | ✓ | — (structure only) |
| Hit rate | 100% (10/10) | ~30–60% | ~25% | N/A |
| Structural validation | AF2-multimer | AF2 / ESMFold | RMSD only | Built-in |
| Binding energy scoring | Rosetta ddG | Rosetta / PyRosetta | — | — |
| End-to-end pipeline | ✓ Automated | Manual assembly | Manual | Inference only |
We came from different worlds — bioengineering, software, business, and systems architecture. But we shared one belief: protein engineering should be accessible to everyone.
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Bioengineer — KAIST
"Understanding life at molecular level"
Software Developer & Data Analyst
"Building the infrastructure science deserves"

Business & Growth
"Turning scientific power into real-world impact"

Project Manager & Product Developer
"Architecting systems from concept to execution"
Foldexa brings biology, software, and vision together to accelerate the future of protein engineering.
We believe that breakthrough discoveries shouldn't be limited by computational barriers.