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README.md
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tags:
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- pytorch_model_hub_mixin
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---
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---
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datasets:
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- andrewdalpino/AmiGO-Boost
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metrics:
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- precision
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- recall
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- f1
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base_model:
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- EvolutionaryScale/esmc-600m-2024-12
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pipeline_tag: text-classification
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tags:
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- gene-ontology
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---
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# ESMC Protein Function Predictor
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An Evolutionary-scale Model (ESM) for protein function prediction from amino acid sequences using the Gene Ontology (GO). Based on the ESM Cambrian Transformer architecture, pre-trained on [UniRef](https://www.uniprot.org/help/uniref), [MGnify](https://www.ebi.ac.uk/metagenomics), and the Joint Genome Institute's database and fine-tuned on the [AmiGO Boost](https://huggingface.co/datasets/andrewdalpino/AmiGO-Boost) protein function dataset, this model predicts the GO subgraph for a particular protein sequence - giving you insight into the molecular function, biological process, and location of the activity inside the cell.
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## What are GO terms?
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> "The Gene Ontology (GO) is a concept hierarchy that describes the biological function of genes and gene products at different levels of abstraction (Ashburner et al., 2000). It is a good model to describe the multi-faceted nature of protein function."
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> "GO is a directed acyclic graph. The nodes in this graph are functional descriptors (terms or classes) connected by relational ties between them (is_a, part_of, etc.). For example, terms 'protein binding activity' and 'binding activity' are related by an is_a relationship; however, the edge in the graph is often reversed to point from binding towards protein binding. This graph contains three subgraphs (subontologies): Molecular Function (MF), Biological Process (BP), and Cellular Component (CC), defined by their root nodes. Biologically, each subgraph represent a different aspect of the protein's function: what it does on a molecular level (MF), which biological processes it participates in (BP) and where in the cell it is located (CC)."
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From [CAFA 5 Protein Function Prediction](https://www.kaggle.com/competitions/cafa-5-protein-function-prediction/data)
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## Pretrained Models
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The following pretrained models are available on HuggingFace Hub.
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| Name | Embedding Dim. | Attn. Heads | Encoder Layers | Context Length | QAT | Total Parameters |
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| [andrewdalpino/ESMC-300M-Protein-Function](https://huggingface.co/andrewdalpino/ESMC-300M-Protein-Function) | 960 | 15 | 30 | 2048 | None | 361M |
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| [andrewdalpino/ESMC-300M-QAT-Protein-Function](https://huggingface.co/andrewdalpino/ESMC-300M-QAT-Protein-Function) | 960 | 15 | 30 | 2048 | int8w | 361M |
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| [andrewdalpino/ESMC-600M-Protein-Function](https://huggingface.co/andrewdalpino/ESMC-600M-Protein-Function) | 1152 | 18 | 36 | 2048 | None | 644M |
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| [andrewdalpino/ESMC-600M-QAT-Protein-Function](https://huggingface.co/andrewdalpino/ESMC-600M-QAT-Protein-Function) | 1152 | 18 | 36 | 2048 | int8w | 644M |
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## Basic Pretrained Example
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First, install the `esmc_function_classifier` package using [pip](https://pypi.org/project/pip/).
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```sh
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pip install esmc_function_classifier
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```
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Then, we'll load the model weights from HuggingFace Hub, tokenize the amino acid sequence, and infer the GO terms.
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```python
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import torch
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from esm.tokenization import EsmSequenceTokenizer
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from esmc_function_classifier.model import EsmcGoTermClassifier
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model_name = "andrewdalpino/ESMC-600M-QAT-Protein-Function"
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sequence = "MPPKGHKKTADGDFRPVNSAGNTIQAKQKYSIDDLLYPKSTIKNLAKETLPDDAIISKDALTAIQRAATLFVSYMASHGNASAEAGGRKKIT"
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top_p = 0.5
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tokenizer = EsmSequenceTokenizer()
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model = EsmcGoTermClassifier.from_pretrained(model_name)
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out = tokenizer(sequence, max_length=2048, truncation=True)
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input_ids = torch.tensor(out["input_ids"], dtype=torch.int64)
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go_term_probabilities = model.predict_terms(
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input_ids, top_p=top_p
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)
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```
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You can also output the gene-ontology (GO) `networkx` subgraph for a given sequence like in the example below. You'll need an up-to-date gene ontology database that you can import using the `obonet` package.
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```sh
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pip install obonet
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```
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```python
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import networkx as nx
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import obonet
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# Visit https://geneontology.org/docs/download-ontology/ to download.
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go_db_path = "./dataset/go-basic.obo"
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graph = obonet.read_obo(go_db_path)
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model.load_gene_ontology(graph)
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subgraph, go_term_probabilities = model.predict_subgraph(
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input_ids, top_p=top_p
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)
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json = nx.node_link_data(subgraph)
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print(json)
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```
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### Quantized Model
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To quantize the model weights using int8 call the `quantize_weights()` method. Any model can be quantized, but we recommend one that has been quantization-aware trained (QAT) for the best performance. The `group_size` argument controls the granularity at which quantization scales are computed.
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```python
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model.quantize_weights(group_size=64)
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```
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## Code Repository
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The training code can be found at [https://github.com/andrewdalpino/ESMC-Function-Classifier](https://github.com/andrewdalpino/ESMC-Function-Classifier).
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## References:
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>- T. Hayes, et al. Simulating 500 million years of evolution with a language model, 2024.
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>- M. Ashburner, et al. Gene Ontology: tool for the unification of biology, 2000.
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