Reading
An end-to-end Acr prediction pipeline for bioinformatics, integrating protein sequence and structural information, supporting unimodal/multimodal prediction and Acr type analysis.
Section 01
ShieldBreaker is an end-to-end Acr prediction pipeline for bioinformatics, integrating protein sequence and structural information, supporting unimodal/multimodal prediction and Acr type analysis. It addresses the limitation of traditional prediction methods relying on a single information source, providing a breakthrough solution for anti-CRISPR protein identification.
Section 02
The CRISPR-Cas system is a revolutionary gene-editing tool, but naturally occurring anti-CRISPR proteins (Acr) inhibit its activity, posing challenges to the safety and controllability of gene editing. Accurate Acr identification is a key topic in computational biology; traditional methods relying on a single information source struggle to capture complex features, and ShieldBreaker offers a new solution via multimodal large language models.
Section 03
ShieldBreaker's core advantage lies in combining protein sequence and 3D structural information to achieve precise prediction, providing an end-to-end pipeline and Acr type analysis functionality. The project offers two model versions: a conservative version (optimized for precision, suitable for false-positive sensitive scenarios) and an aggressive/balanced version (using Focal Loss to balance precision and recall, officially recommended).
Section 04
ShieldBreaker supports two prediction modes: unimodal (sequence-only, FASTA input, feature extraction via ProT5, high efficiency suitable for large-scale screening); multimodal (combining sequence and PDB structure, capturing conformational features to improve accuracy, where structures can come from experiments or prediction tools).
Section 05
Intelligent features include Acr type analysis (identifying inhibitory families like Class I/II), intelligent PDB filtering (only performing FoldSeek structural alignment on positive sequences), and automated pipeline (one-click completion of the process, outputting structured CSV). The tech stack is based on Python3.11+, relying on PyTorch, Transformers, etc., supporting GPU acceleration and CPU fallback, and integrating FoldSeek. Deployment offers Docker images and Conda environments; pre-trained models include ProT5 and PST.
Section 06
The project's example data comes from sequences generated by the Evo1.5 model and experimentally validated, which have been published in the Nature journal, ensuring the reliability of benchmark tests.
Section 07
ShieldBreaker represents an advanced application of AI in bioinformatics, which is crucial for the safe application of CRISPR technology in fields like gene therapy and agricultural breeding. It lays the foundation for basic research and the development of safer gene-editing systems, and the multimodal fusion approach also provides a reference for other protein function prediction tasks.
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