3D Structure From 2D Microscopy Images Using Deep Learning.

3D Structure From 2D Microscopy Images Using Deep Learning.
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DOI:
10.3389/fbinf.2021.740342
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发表时间:
2021
期刊:
FRONTIERS IN BIOINFORMATICS
影响因子:
--
通讯作者:
Cox, Susan
Cox, Susan
中科院分区:
其他
文献类型:
--
作者:
Blundell, Benjamin;Sieben, Christian;Manley, Suliana;Rosten, Ed;Ch'ng, Queelim;Cox, Susan

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了解蛋白质复合体的结构对于确定其功能至关重要。然而,从显微图像中检索准确的3D结构是非常具有挑战性的,特别是在许多成像方式是二维的情况下。人工智能的最新进展已经应用于这个问题,主要是使用基于体素的方法来分析电子显微镜图像集。在这里,我们提出了一种深度学习解决方案,用于从大量的二维单分子定位显微图像中重建蛋白质复合体,该解决方案完全不受约束。我们的卷积神经网络与一个可微的呈现器相结合,预测姿势并得出单一的结构。训练结束后,丢弃网络,该方法的输出是一个符合数据集的结构模型。我们展示了我们的系统在两个蛋白质复合体上的性能:CEP152(包括中心粒近端环的一部分)和中心粒。
Understanding the structure of a protein complex is crucial in determining its function. However, retrieving accurate 3D structures from microscopy images is highly challenging, particularly as many imaging modalities are two-dimensional. Recent advances in Artificial Intelligence have been applied to this problem, primarily using voxel based approaches to analyse sets of electron microscopy images. Here we present a deep learning solution for reconstructing the protein complexes from a number of 2D single molecule localization microscopy images, with the solution being completely unconstrained. Our convolutional neural network coupled with a differentiable renderer predicts pose and derives a single structure. After training, the network is discarded, with the output of this method being a structural model which fits the data-set. We demonstrate the performance of our system on two protein complexes: CEP152 (which comprises part of the proximal toroid of the centriole) and centrioles.
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