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Protein sequence modelling with Bayesian flow networks

delete2025-04-03
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OA
AI
T
Timothy Atkinson
T
Thomas D. Barrett *
S
Scott Cameron
G
Greenig, Matthew
T
Tan, Charlie B.
R
Robinson, Louis
G
Graves, Alex
C
Copoiu, Liviu
A
Alexandre Laterre
DOI:10.1038/s41467-025-58250-2delete
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摘要

摘要

En 中文
探索广阔且 largely uncharted 的氨基酸序列领域对于理解复杂蛋白质功能以及新型治疗蛋白质的工程化至关重要。尽管生成式机器学习已推动蛋白质序列建模的发展,但现有方法在无条件和条件生成方面均不擅长。本研究提出,贝叶斯流网络(BFNs)——一种近期引入的生成建模框架——能够应对这些挑战。我们提出了 ProtBFN,一个在 UniProtKB 中整理的蛋白质序列上训练的 650M 参数模型,其能够生成自然、多样、结构一致且新颖的蛋白质序列,显著优于领先的自回归和离散扩散模型。此外,我们将 ProtBFN 在 Observed Antibody Space 中的重链上微调,获得抗体专用模型 AbBFN,并用于评估零样本条件生成能力。研究发现,AbBFN 在预测单个框架或互补决定区时,其表现与或优于抗体专用 BERT-style 模型。
Keyword:
ANTIBODIES

期刊

Nature Communications 封面图
Nature Communications
IF:
15.7
论文数:
9.3W
被引数:
91.2W

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