Exploring the Alternative Conformation of a Known Protein Structure Based on Contact Map Prediction

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Abstract

The rapid development of deep learning-based methods has considerably advanced the field of protein structure prediction. The accuracy of predicting the 3D structures of simple proteins is comparable to that of experimentally determined structures, providing broad possibilities for structure-based biological studies. Another critical question is whether and how multistate structures can be predicted from a given protein sequence. In this study, analysis of tens of two-state proteins demonstrated that deep learning-based contact map predictions contain structural information on both states, which suggests that it is probably appropriate to change the target of deep learning-based protein structure prediction from one specific structure to multiple likely structures. Furthermore, by combining deep learning- and physics-based computational methods, we developed a protocol for exploring alternative conformations from a known structure of a given protein, by which we successfully approached the holo-state conformations of multiple representative proteins from their apo-state structures.

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Li, J., Wang, L., Zhu, Z., & Song, C. (2024). Exploring the Alternative Conformation of a Known Protein Structure Based on Contact Map Prediction. Journal of Chemical Information and Modeling, 64(1), 301–315. https://doi.org/10.1021/acs.jcim.3c01381

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