---
license: mit
---
[Github repo](https://github.com/klemens-floege/oneprot/)|
[Paper link](https://arxiv.org/abs/2411.04863)


## Overview

OneProt is a multimodal model that integrates protein sequence, protein structure (both in form of an augmented sequence and in a form of a graph), protein binding sites and protein text annotations. Contrastive learning is used to align each of the modality to the central one, which is protein sequence. In the pre-training phase InfoNCE loss is computed between pairs (protein sequence, other modality).


## Model architecture

Protein sequence encoder: [esm2_t33_650M_UR50D](https://huggingface.co/facebook/esm2_t33_650M_UR50D)

Protein structure encoder: [esm2_t12_35M_UR50D](https://huggingface.co/facebook/esm2_t12_35M_UR50D)

Protein structure encoder GNN: [ProNet](https://github.com/divelab/DIG)

Pocket (binding sites encoder) GNN: [ProNet](https://github.com/divelab/DIG)

Text encoder: [BiomedNLP-PubMedBERT-base-uncased-abstract-fulltext](https://huggingface.co/microsoft/BiomedNLP-BiomedBERT-base-uncased-abstract-fulltext)

Below is an example code on how to obtain the embeddings (requires cloning our repo first). Note that example data for transformer models are read-off from `.txt` files and in principle can be passed as strings, whlist the data for GNN models are contained in the example `.h5` file and need to subsequently be converted to graphs.

```
import torch
import hydra
from omegaconf import OmegaConf
from huggingface_hub import  HfApi, hf_hub_download
import sys
import os
import h5py
from torch_geometric.data import Batch
from transformers import AutoTokenizer

sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))) # assuming that you are running this script from the oneprot repo, can be any other path

from src.models.oneprot_module import OneProtLitModule
from src.data.utils.struct_graph_utils import protein_to_graph

###if you are not running on the supercomputer, you may need to uncomment the two following lines
#os.environ['RANK']='0'
#os.environ['WORLD_SIZE']='1'


#Load the config file and read it off

config_path = hf_hub_download(
        repo_id="HelmholtzAI-FZJ/oneprot",
        filename="config.yaml",
    )

with open(config_path, 'r') as f:
    cfg = OmegaConf.load(f)

# Prepare components dictionary from config
components = {
        'sequence': hydra.utils.instantiate(cfg.model.components.sequence),
        'struct_token': hydra.utils.instantiate(cfg.model.components.struct_token),
        'struct_graph': hydra.utils.instantiate(cfg.model.components.struct_graph),
        'pocket': hydra.utils.instantiate(cfg.model.components.pocket),
        'text': hydra.utils.instantiate(cfg.model.components.text)
    }

# Load the model checkpoint

checkpoint_path = hf_hub_download(
        repo_id="HelmholtzAI-FZJ/oneprot",
        filename="pytorch_model.bin",
        repo_type="model"
    )

# Create model instance and load the checkpoint

model = OneProtLitModule(
        components=components,
        optimizer=None,
        loss_fn=cfg.model.loss_fn,
        local_loss=cfg.model.local_loss,
        gather_with_grad=cfg.model.gather_with_grad,
        use_l1_regularization=cfg.model.use_l1_regularization,
        train_on_all_modalities_after_step=cfg.model.train_on_all_modalities_after_step,
        use_seqsim=cfg.model.use_seqsim
    )

state_dict = torch.load(checkpoint_path)
model_state_dict = model.state_dict()
model.load_state_dict(state_dict, strict=True)

# Define the tokenisers

tokenizers = {
        'sequence': "facebook/esm2_t33_650M_UR50D",
        'struct_token': "facebook/esm2_t33_650M_UR50D",
        'text': "microsoft/BiomedNLP-BiomedBERT-base-uncased-abstract-fulltext"
    }

loaded_tokenizers = {}
for modality, tokenizer_name in tokenizers.items():
    tokenizer = AutoTokenizer.from_pretrained(tokenizers[modality])
    if modality=='struct_token':
      new_tokens = ['p', 'y', 'n', 'w', 'r', 'q', 'h', 'g', 'd', 'l', 'v', 't', 'm', 'f', 's', 'a', 'e', 'i', 'k', 'c','#']
      tokenizer.add_tokens(new_tokens)
    loaded_tokenizers[modality] = tokenizer

# Get example embeddings for each modality


##########################sequence##############################

modality = "sequence"
 
file_path = hf_hub_download(
    repo_id="HelmholtzAI-FZJ/oneprot",
    filename="data_examples/sequence_example.txt",
    repo_type="model"  # or "dataset"
)

with open(file_path, 'r') as file:
    input_sequence = file.read().strip()

input_tensor = loaded_tokenizers[modality](input_sequence, return_tensors="pt")["input_ids"]
output = model.network[modality](input_tensor)
print(f"Output for modality '{modality}': {output}")


###########################text#################################

modality = "text"

file_path = hf_hub_download(
    repo_id="HelmholtzAI-FZJ/oneprot",
    filename="data_examples/text_example.txt",
    repo_type="model"  # or "dataset"
)

with open(file_path, 'r') as file:    
    input_text = file.read().strip()

input_tensor = loaded_tokenizers[modality](input_text, return_tensors="pt")["input_ids"]
output = model.network[modality](input_tensor)
print(f"Output for modality '{modality}': {output}")


#####################tokenized structure########################

modality = "struct_token" 

file_path = hf_hub_download(
    repo_id="HelmholtzAI-FZJ/oneprot",
    filename="data_examples/struct_token_example.txt",
    repo_type="model"  # or "dataset"
)

with open(file_path, 'r') as file:
    input_struct_token = file.read().strip()

input_struct_token = "".join([s.replace("#", "") for s in input_struct_token])
input_tensor = loaded_tokenizers[modality](input_struct_token, return_tensors="pt")["input_ids"]
output = model.network[modality](input_tensor)
print(f"Output for modality '{modality}': {output}")


#####################graph structure############################

modality = "struct_graph"  
file_path = hf_hub_download(
    repo_id="HelmholtzAI-FZJ/oneprot",
    filename="data_examples/seqstruc_example.h5",
    repo_type="model"  # or "dataset"
)

with h5py.File(file_path, 'r') as file:
    input_struct_graph=[protein_to_graph('E6Y2X0', file_path, 'non_pdb', 'A', pockets=False)]
    input_struct_graph = Batch.from_data_list(input_struct_graph)
    output=model.network[modality](input_struct_graph)
print(f"Output for modality '{modality}': {output}")


##########################pocket################################


modality = "pocket"  # Replace with the desired modality

file_path = hf_hub_download(
    repo_id="HelmholtzAI-FZJ/oneprot",
    filename="data_examples/pocket_example.h5",
    repo_type="model"  # or "dataset"
)

with h5py.File(file_path, 'r') as file:
    input_pocket=[protein_to_graph('E6Y2X0', file_path, 'non_pdb', 'A', pockets=True)]
    input_pocket = Batch.from_data_list(input_pocket)
    output=model.network[modality](input_pocket)
    
print(f"Output for modality '{modality}': {output}")

```

Citation

```
@misc{flöge2024oneprotmultimodalproteinfoundation,
      title={OneProt: Towards Multi-Modal Protein Foundation Models}, 
      author={Klemens Flöge and Srisruthi Udayakumar and Johanna Sommer and Marie Piraud and Stefan Kesselheim and Vincent Fortuin and Stephan Günneman and Karel J van der Weg and Holger Gohlke and Alina Bazarova and Erinc Merdivan},
      year={2024},
      eprint={2411.04863},
      archivePrefix={arXiv},
      primaryClass={cs.LG},
      url={https://arxiv.org/abs/2411.04863}, 
}

```