ProteinsGPU5 credits

ESMFold — Protein Structure Prediction

Predict 3D protein structure from sequence in seconds

ESMFold uses the ESM-2 protein language model to predict 3D protein structure directly from amino acid sequence. Unlike AlphaFold, it doesn't require multiple sequence alignments (MSA), making it 60x faster while maintaining high accuracy for single-chain predictions.

$0.05
per API call
5
credits per call
/v1/proteins/fold
API endpoint

Features

Predict 3D structure from amino acid sequence
Returns PDB file with atomic coordinates
Per-residue pLDDT confidence scores
No MSA required — single sequence input
GPU-accelerated on NVIDIA A100
Async job submission with polling

Quick Start

ESMFold — Python Examplepython
import requests

API_KEY = "sk-sci-your-key-here"
url = "https://scirouter.ai/v1/proteins/fold"

# Submit a folding job
response = requests.post(url, json={
    "sequence": "MKFLILLFNILCLFPVLAADNHGVS..."
}, headers={"Authorization": f"Bearer {API_KEY}"})

job = response.json()
print(f"Job ID: {job['job_id']}")

# Poll for results
import time
while True:
    result = requests.get(f"{url}/{job['job_id']}",
        headers={"Authorization": f"Bearer {API_KEY}"})
    data = result.json()
    if data["status"] == "completed":
        print(f"PDB file: {len(data['pdb'])} bytes")
        print(f"Mean pLDDT: {data['mean_plddt']:.1f}")
        break
    time.sleep(2)

Use Cases

1

Validate computationally designed protein sequences

2

Screen protein variants for structural stability

3

Generate structures for downstream docking experiments

4

Rapid prototyping in drug discovery pipelines

Start Using ESMFold

500 free credits every month. No credit card required.