Polyproline-II helix in proteins: structure and function

AA Adzhubei, MJE Sternberg, AA Makarov - Journal of molecular biology, 2013 - Elsevier
The poly-l-proline type II (PPII) helix in recent years has emerged clearly as a structural class
not only of fibrillar proteins (in collagen, PPII is a dominant conformation) but also of the …

Conformation of the backbone in unfolded proteins

Z Shi, K Chen, Z Liu, NR Kallenbach - Chemical reviews, 2006 - ACS Publications
Despite its theoretical and practical importance, protein folding remains among the most
fundamental unsolved problems in the life sciences. The challenge of predicting folded …

[图书][B] Structure and function of intrinsically disordered proteins

P Tompa, A Fersht - 2009 - taylorfrancis.com
The existence and functioning of intrinsically disordered proteins (IDPs) challenge the
classical structure-function paradigm that equates function with a well-defined 3D structure …

Structure and dynamics of the homologous series of alanine peptides: a joint molecular dynamics/NMR study

J Graf, PH Nguyen, G Stock… - Journal of the American …, 2007 - ACS Publications
The ϕ, ψ backbone angle distribution of small homopolymeric model peptides is
investigated by a joint molecular dynamics (MD) simulation and heteronuclear NMR study …

Stereoelectronic effects on polyproline conformation

JC Horng, RT Raines - Protein Science, 2006 - Wiley Online Library
The polyproline type II (PPII) helix is a prevalent conformation in both folded and unfolded
proteins, and is known to play important roles in a wide variety of biological processes …

Polyproline II propensities from GGXGG peptides reveal an anticorrelation with β-sheet scales

Z Shi, K Chen, Z Liu, A Ng… - Proceedings of the …, 2005 - National Acad Sciences
There is growing appreciation of the functional relevance of unfolded proteins in biology.
However, unfolded states of proteins have proven inaccessible to the usual techniques for …

A propensity scale for type II polyproline helices (PPII): aromatic amino acids in proline-rich sequences strongly disfavor PPII due to proline–aromatic interactions

AM Brown, NJ Zondlo - Biochemistry, 2012 - ACS Publications
Type II polyproline helices (PPII) are a fundamental secondary structure of proteins, common
in globular and nonglobular regions and important in cellular signaling. We developed a …

Improved efficiency of replica exchange simulations through use of a hybrid explicit/implicit solvation model

A Okur, L Wickstrom, M Layten, R Geney… - Journal of Chemical …, 2006 - ACS Publications
The use of parallel tempering or replica exchange molecular dynamics (REMD) simulations
has facilitated the exploration of free energy landscapes for complex molecular systems, but …

Polyproline II conformation is one of many local conformational states and is not an overall conformation of unfolded peptides and proteins

J Makowska, S Rodziewicz-Motowidło… - Proceedings of the …, 2006 - National Acad Sciences
The alanine-based peptide Ac-XX (A) 7OO-NH2, referred to as XAO (where X, A, and O
denote diaminobutyric acid, alanine, and ornithine, respectively), has recently been …

Intrinsic propensities of amino acid residues in GxG peptides inferred from amide I′ band profiles and NMR scalar coupling constants

A Hagarman, TJ Measey, D Mathieu… - Journal of the …, 2010 - ACS Publications
A reliable intrinsic propensity scale of amino acid residues is indispensable for an
assessment of how local conformational distributions in the unfolded state can affect the …