v1.9.3 Public Beta

Engineering
Life. Digitally.

An accurate and intelligent protein structure prediction platform. Accelerate drug discovery with next-generation AI models.

Explore

Our Pipelines

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

NewPipeline 3

From Target to Lead Candidate.
In Days, Not Years.

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.

Timeline18-24 months

3-5 days

From PDB upload to ranked, developability-scored candidates. No library screening. No animal immunization.

Cost per campaign$2-5M

$3,000

100+ candidates designed, 12-metric developability scored, Boltz-2 structure predicted, lab-ready sequences.

ValidationPublished

100%

Hit rate on anti-Tie2. 10/10 designs passed. Published in mAbs (2025). pLDDT 0.96, ddG -25.75.

Pipeline 3- Closed-loop RL design with Boltz-2
01

DiffAb / RFdiff

RL-Guided Gen

Pre-trained weights

02

ProteinMPNN

Sequence Opt.

Pre-trained weights

03

Boltz-2 + Protenix

Structure + Affinity

Pre-trained ensemble

04

12-Metric Cascade

Developability

Jain et al. benchmarks

05

Pareto Ranking

Multi-objective

Evidence-based wts

06

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

Biotech R&D Teams

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.

University Labs

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.

Pharma Discovery

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).

Enzyme Engineering

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.

Start Your First Campaign

$3,000 per target - Results in 3-5 days - No GPU infrastructure needed

From Algorithms
to the Cure.

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.

2
End-to-end pipelines
4+
AI models integrated
Open
Source UI on GitHub

Our Pipelines

Pipeline 1CDR-focused redesignDiffAb
01
DiffAbAntibody CDR DesignOpen
02
PyRosettaEnergy MinimisationOpen
03
AlphaFold2Structure ValidationOpen
FilteringRMSD · i_PAE · ddGProprietary
4-step · ~3 h runtime
Pipeline 2De novo scaffold designRFdiff
01
RFdiffusionScaffold GenerationOpen
02
ProteinMPNNSequence DesignOpen
03
AlphaFold2Structure ValidationOpen
FilteringpLDDT · i_PAE · ddGProprietary
4-step · ~5 h runtime

Simple. Powerful. Fast.

From raw protein structure to publication-ready variants.Automatically.
Generate

Step 03

Generate

Analyze Results

Step 04

Analyze Results

Upload Structure

Step 01

Upload Structure

Choose Pipeline

Step 02

Choose Pipeline

Generate

Step 03

Generate

Analyze Results

Step 04

Analyze Results

Upload Structure

Step 01

Upload Structure

Choose Pipeline

Step 02

Choose Pipeline

Our Partners

Solbridge Logo

Solbridge

International School of Business

KAIST Logo

KAIST

Korea Advanced Institute of Science

Become a Partner

Join KAIST, Solbridge, and other leading institutions in advancing the future of protein engineering.

Foldexa.bio

Pipeline Benchmark vs. World-Class Platforms

Anti-Tie2 CDR redesign · AF2-multimer predicted metrics · In Silico metrics · February 2026

Core Metrics Comparison

Interface PAE (i_PAE)

Lower = higher confidence in binding pose

4.54

Foldexa.bio
Best (#1)

4.62

Foldexa.bio
Top-10 avg

5.75

Reference
hTAAB-hTie2

8.2

Chai-2
(median)

CDR-L1 Backbone RMSD

Angstroms (Å) — lower is better

2 Å filtering threshold
0.179

Foldexa.bio
Best (#1)

0.37

Foldexa.bio
Top-10 avg

0.81

Reference
hTAAB-hTie2

~1.5

DiffAb
(scRMSD)

Binding Free Energy (Rosetta ddG)

kcal/mol — more negative = stronger binding

0 kcal/mol
−25.75

Foldexa.bio
Best (#4)

−23.52

Foldexa.bio
Top-10 avg

−15.00

RFdiffusion
(Bennett)

0.00

Reference
hTAAB-hTie2

Key Performance Indicators

100%
Hit rate
(10/10 designs passed)
0.179 Å
Best RMSD
(near-native)
−25.75
Best ddG
(kcal/mol)
4.54
Best i_PAE
(interface confidence)
0.96
pLDDT
(structure quality)

Pipeline Feature Comparison

FeatureFoldexa.bioRFdiffusionDiffAbChai-2
CDR redesign✓ All CDRs— (structure only)
Hit rate100% (10/10)~30–60%~25%N/A
Structural validationAF2-multimerAF2 / ESMFoldRMSD onlyBuilt-in
Binding energy scoringRosetta ddGRosetta / PyRosetta
End-to-end pipeline✓ AutomatedManual assemblyManualInference only
Sources: Bennett et al., Nature (2025); Luo et al., ICML (2022); Chai Discovery, bioRxiv (2025); Jin et al., Nat. Commun. (2021)
Note: Foldexa.bio metrics from AF2-multimer predictions. Cross-platform metrics not directly comparable.
Foldexa.bio

We are Foldexa

Four different paths.
One shared obsession.

We came from different worlds — bioengineering, software, business, and systems architecture. But we shared one belief: protein engineering should be accessible to everyone.

Azamat Armanuly

Azamat Armanuly

CEO

Bioengineer — KAIST

"Understanding life at molecular level"
Read story
Kanat Tilekov

Kanat Tilekov

CTO

Software Developer & Data Analyst

"Building the infrastructure science deserves"
Read story
Sarzmuza Issabek

Sarzmuza Issabek

COO

Business & Growth

"Turning scientific power into real-world impact"
Read story
Rauan Bolat

Rauan Bolat

CPO

Project Manager & Product Developer

"Architecting systems from concept to execution"
Read story

Swipe to see all

Four disciplines. Four founders.
One platform.

Foldexa brings biology, software, and vision together to accelerate the future of protein engineering.

Our Vision

To democratize protein engineering and make cutting-edge AI tools accessible to researchers worldwide.

We believe that breakthrough discoveries shouldn't be limited by computational barriers.

Get in Touch

Interested in partnering with us?

Whether you want to learn more or explore collaboration opportunities, we'd love to connect.