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Contact-assisted protein folding has made very good progress, but two challenges remain. One is accurate contact prediction for proteins lack of many sequence homologs and the other is that time-consuming folding simulation is often needed…

Biomolecules · Quantitative Biology 2022-10-12 Jinbo Xu

Protein-Protein Interactions (PPIs) perform essential roles in biological functions. Although some experimental techniques have been developed to detect PPIs, they suffer from high false positive and high false negative rates. Consequently,…

Quantitative Methods · Quantitative Biology 2017-12-29 Samaneh Aghajanbaglo , Sobhan Moosavi , Maseud Rahgozar , Amir Rahimi

Accurate prediction of inter-residue contacts of a protein is important to calcu- lating its tertiary structure. Analysis of co-evolutionary events among residues has been proved effective to inferring inter-residue contacts. The Markov…

Biomolecules · Quantitative Biology 2018-09-05 Haicang Zhang , Qi Zhang , Fusong Ju , Jianwei Zhu , Shiwei Sun , Yujuan Gao , Ziwei Xie , Minghua Deng , Shiwei Sun , Wei-Mou Zheng , Dongbo Bu

A contact map is a simple representation of the structure of proteins and other chain-like macromolecules. This representation is quite amenable to numerical studies of folding. We show that the number of contact maps corresponding to the…

Statistical Mechanics · Physics 2009-10-31 M. Vendruscolo , B. Subramanian , I. Kanter , E. Domany , J. Lebowitz

We show that the contact map of the native structure of globular proteins can be reconstructed starting from the sole knowledge of the contact map's principal eigenvector, and present an exact algorithm for this purpose. Our algorithm…

Biomolecules · Quantitative Biology 2009-11-10 Markus Porto , Ugo Bastolla , H. Eduardo Roman , Michele Vendruscolo

Crystal structure determines properties of materials. With the crystal structure of a chemical substance, many physical and chemical properties can be predicted by first-principles calculations or machine learning models. Since it is…

Materials Science · Physics 2021-09-22 Wenhui Yang , Edirisuriya M. Dilanga Siriwardane , Rongzhi Dong , Yuxin Li , Jianjun Hu

Multimodal approaches that integrate protein structure and sequence have achieved remarkable success in protein-protein interface prediction. However, extending these methods to protein-peptide interactions remains challenging due to the…

Signal Processing · Electrical Eng. & Systems 2025-11-03 Dian Chen , Yunkai Chen , Tong Lin , Sijie Chen , Xiaolin Cheng

Despite the importance of a thermodynamically stable structure with a conserved fold for protein function, almost all evolutionary models neglect site-site correlations that arise from physical interactions between neighboring amino acid…

Populations and Evolution · Quantitative Biology 2013-12-04 Andrew J. Bordner , Hans D. Mittelmann

In a recent paper Siegfried et al. published a new sequence-based structural RNA assay that utilizes mutational profiling to detect base pairing (MaP). Output from MaP provides information about both pairing (via reactivities) and contact…

Quantitative Methods · Quantitative Biology 2014-12-12 Akshay Tambe , Jennifer Doudna , Lior Pachter

Specific protein-protein interactions are crucial in the cell, both to ensure the formation and stability of multi-protein complexes, and to enable signal transduction in various pathways. Functional interactions between proteins result in…

Biological Physics · Physics 2016-11-21 Anne-Florence Bitbol , Robert S. Dwyer , Lucy J. Colwell , Ned S. Wingreen

We present a review of a series of contact maps for the determination of native interactions in proteins and nucleic acids based on a distance-threshold. Such contact maps are mostly based on physical and chemical construction, and yet they…

Soft Condensed Matter · Physics 2023-11-15 Luis F. Cofas-Vargas , Rodrigo A. Moreira , Simón Poblete , Mateusz Chwastyk , Adolfo B. Poma

Crystal structure prediction is now playing an increasingly important role in discovery of new materials. Global optimization methods such as genetic algorithms (GA) and particle swarm optimization (PSO) have been combined with first…

Materials Science · Physics 2021-02-09 Jianjun Hu , Wenhui Yang , Rongzhi Dong , Yuxin Li , Xiang Li , Shaobo Li

Developing and discovering new drugs is a complex and resource-intensive endeavor that often involves substantial costs, time investment, and safety concerns. A key aspect of drug discovery involves identifying novel drug-target (DT)…

Machine Learning · Computer Science 2024-02-13 Rakesh Bal , Yijia Xiao , Wei Wang

Protein-protein interactions (PPIs) are fundamental to numerous cellular processes, and their characterization is vital for understanding disease mechanisms and guiding drug discovery. While protein language models (PLMs) have demonstrated…

In this paper, we propose a structured feature learning framework to reason the correlations among body joints at the feature level in human pose estimation. Different from existing approaches of modelling structures on score maps or…

Computer Vision and Pattern Recognition · Computer Science 2016-03-31 Xiao Chu , Wanli Ouyang , Hongsheng Li , Xiaogang Wang

Accurate prediction of physical interaction outcomes is a crucial component of human intelligence and is important for safe and efficient deployments of robots in the real world. While there are existing vision-based intuitive physics…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Jiafei Duan , Samson Yu , Soujanya Poria , Bihan Wen , Cheston Tan

Learning effective protein representations is critical in a variety of tasks in biology such as predicting protein function or structure. Existing approaches usually pretrain protein language models on a large number of unlabeled amino acid…

Machine Learning · Computer Science 2023-01-31 Zuobai Zhang , Minghao Xu , Arian Jamasb , Vijil Chenthamarakshan , Aurelie Lozano , Payel Das , Jian Tang

Despite an explosion in the number of experimentally determined, atomically detailed structures of biomolecules, many critical tasks in structural biology remain data-limited. Whether performance in such tasks can be improved by using large…

Biomolecules · Quantitative Biology 2019-12-30 Raphael J. L. Townshend , Rishi Bedi , Patricia A. Suriana , Ron O. Dror

We consider a generic representation problem of internal coordinates (bond lengths, valence angles, and dihedral angles) and their transformation to 3-dimensional Cartesian coordinates of a biomolecule. We show that the…

Learning effective protein representations is critical in a variety of tasks in biology such as predicting protein functions. Recent sequence representation learning methods based on Protein Language Models (PLMs) excel in sequence-based…

Quantitative Methods · Quantitative Biology 2023-10-19 Zuobai Zhang , Chuanrui Wang , Minghao Xu , Vijil Chenthamarakshan , Aurélie Lozano , Payel Das , Jian Tang