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To the best of the author's knowledge, there is little structural data available on the AGAAAAGA palindrome in the hydrophobic region (113-120) of prion proteins due to the unstable, noncrystalline and insoluble nature of the amyloid…

生物物理 · 物理学 2012-12-14 Jiapu Zhang

X-ray crystallography and nuclear magnetic resonance (NMR) spectroscopy are two powerful tools to determine the protein 3D structure. However, not all proteins can be successfully crystallized, particularly for membrane proteins. Although…

最优化与控制 · 数学 2012-12-14 Jiapu Zhang , David D. W. Liu

X-ray crystallography is a powerful tool to determine the protein 3D structure. However, it is time-consuming and expensive, and not all proteins can be successfully crystallized, particularly for membrane proteins. Although nuclear…

生物大分子 · 定量生物学 2013-12-10 Jiapu Zhang , Jie Sun , Changzhi Wu

X-ray crystallography and nuclear magnetic resonance (NMR) spectroscopy are two powerful tools to determine the protein 3D structure. However, not all proteins can be successfully crystallized, particularly for membrane proteins. Although…

计算工程、金融与科学 · 计算机科学 2019-12-11 Jiapu Zhang

Experimental X-ray crystallography, NMR (Nuclear Magnetic Resonance) spectroscopy, dual polarization interferometry, etc are indeed very powerful tools to determine the 3-Dimensional structure of a protein (including the membrane protein);…

最优化与控制 · 数学 2013-01-03 Jiapu Zhang , Yating Hou , Yiju Wang , Changyu Wang , Xiangsun Zhang

X-ray crystallography, NMR (Nuclear Magnetic Resonance) spectroscopy, and dual polarization interferometry, etc are indeed very powerful tools to determine the 3D structures of proteins (including the membrane proteins), though they are…

最优化与控制 · 数学 2012-12-14 Jiapu Zhang

Prion diseases caused by the conversion from a soluble normal cellular prion protein into insoluble abnormally folded infectious prions, are invariably fatal and highly infectious degenerative diseases that affect a wide variety of…

生物大分子 · 定量生物学 2013-06-04 Jiapu Zhang , Yuanli Zhang

Protein aggregation is an important field of investigation because it is closely related to the problem of neurodegenerative diseases, to the development of biomaterials, and to the growth of cellular structures such as cyto-skeleton.…

统计力学 · 物理学 2013-08-27 John S. Schreck , Jian-Min Yuan

This is a summary of mathematical tools we used in research of analyzing the structure of proteins with amyloid form \cite{xi2024Top}. We defined several geometry indicators on the discrete curve namely the hop distance, the discrete…

代数拓扑 · 数学 2025-02-11 Xiaoxi Lin , Yunpeng Zi , Fengling Li , Jingyan Li

Powder bed fusion (PBF) is an emerging metal additive manufacturing (AM) technology that enables rapid fabrication of complex geometries. However, defects such as pores and balling may occur and lead to structural unconformities, thus…

计算工程、金融与科学 · 计算机科学 2024-09-23 Jiarui Xie , Zhuo Yang , Chun-Chun Hu , Haw-Ching Yang , Yan Lu , Yaoyao Fiona Zhao

The need to understand the assembly kinetics of fibril formation has become urgent because of the realization that soluble oligomers of amyloidogenic peptides may be even more neurotoxic than the end product, namely, the amyloid fibrils. In…

生物大分子 · 定量生物学 2007-05-23 Ruxandra I. Dima , Bogdan Tarus , John E. Straub , D. Thirumalai

Prion diseases are invariably fatal neurodegenerative diseases that affect humans and animals. Unlike most other amyloid forming neurodegenerative diseases, these can be highly infectious. Prion diseases occur in a variety of species. They…

生物物理 · 物理学 2014-12-01 Jiapu Zhang , Feng Wang

Mouse prion protein PrP106-126 is a peptide corresponding to the residues 107-127 of human prion protein. It has been shown that PrP106-126 can reproduce the main neuropathological features of prionrelated transmissible spongiform…

生物大分子 · 定量生物学 2007-05-23 Xin Zhao , Shuo-Xing Dou , Ping Xie , Peng-Ye Wang

Protein amyloid fibrils are a form of linear protein aggregates that are implicated in many neurodegenerative diseases. Here, we study the dynamics of amyloid fibril elongation by performing Langevin dynamic simulations on a coarse-grained…

生物物理 · 物理学 2009-10-06 Chiu Fan Lee , James Loken , Letitia Jean , David J. Vaux

Amorphous and amorphous porous palladium are key materials for catalysis, hydrogen storage, and functional applications, but their complex structures present computational challenges. This study employs a deep neural network trained on…

材料科学 · 物理学 2025-02-11 Isaías Rodríguez

Recent advances in (scanning) transmission electron microscopy have enabled routine generation of large volumes of high-veracity structural data on 2D and 3D materials, naturally offering the challenge of using these as starting inputs for…

数据分析、统计与概率 · 物理学 2022-11-08 Ayana Ghosh , Maxim Ziatdinov , Ondrej Dyck , Bobby Sumpter , Sergei V. Kalinin

The local structure of a protein strongly impacts its function and interactions with other molecules. Therefore, a concise, informative representation of a local protein environment is essential for modeling and designing proteins and…

Amyloid fibrillation is a protein self-assembly phenomenon that is intimately related to well-known human neurodegenerative diseases. During the past few decades, striking advances have been achieved in our understanding of the physical…

生物大分子 · 定量生物学 2017-09-06 Liu Hong , Chiu Fan Lee , Ya Jing Huang

Amyloid fibrils are stable aggregates of misfolded proteins and polypeptides that are insoluble and resistant to protease activity. Abnormal formation of amyloid fibrils in vivo may lead to neurodegenerative disorders and other systemic…

生物大分子 · 定量生物学 2018-05-22 Boris Haimov , Simcha Srebnik

Structural MRI-to-amyloid PET synthesis has been proposed as a non-invasive alternative for amyloid assessment in Alzheimer's disease (AD). However, reported performance of identical models varies widely across studies, and increasingly…

计算机视觉与模式识别 · 计算机科学 2026-05-27 Louise E. G. Baron , Ross Callaghan , David M. Cash , Philip S. J. Weston , Hojjat Azadbakht , Hui Zhang
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