Abstract：
:X-ray radiation damage to cryocooled ( approximately 100 K) macromolecular crystals has emerged as a general problem, especially since the advent of third generation synchrotron undulator sources. Interest in understanding the physical and chemical phenomena behind the observed effects is growing rapidly. The specific structural damage seen in electron density maps has to be accounted for when studying intermediates, and can sometimes be related to biological function. Radiation damage induces non-isomorphism, thus hampering traditional phasing methods. However, specific damage can also be used to obtain phases. With an increased knowledge of expected crystal lifetime, beamline characteristics and types of damage, macromolecular crystallographers might soon be able to account for radiation damage in data collection, processing and phasing.
journal_name
Curr Opin Struct Bioljournal_title
Current opinion in structural biologyauthors
Ravelli RB,Garman EFdoi
10.1016/j.sbi.2006.08.001subject
Has Abstractpub_date
2006-10-01 00:00:00pages
624-9issue
5eissn
0959-440Xissn
1879-033Xpii
S0959-440X(06)00136-9journal_volume
16pub_type
杂志文章,评审abstract：:Large ribozymes fold on a 'glacial' timescale compared to the folding of their protein counterparts. The sluggish folding exhibited by large RNAs results from the formation of kinetically trapped, misfolded intermediates, which are nonessential features of the folding mechanism. Newly developed mutant ribozymes that a...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/S0959-440X(99)80045-1
更新日期：1999-06-01 00:00:00
abstract：:The protein folding problem can be viewed as three different problems: defining the thermodynamic folding code; devising a good computational structure prediction algorithm; and answering Levinthal's question regarding the kinetic mechanism of how proteins can fold so quickly. Once regarded as a grand challenge, prote...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2007.06.001
更新日期：2007-06-01 00:00:00
abstract：:RNA-dependent RNA polymerases (RdRps) of the segmented double-stranded (ds) RNA viruses of the Reoviridae family exhibit distinguishing structural elements, enabling the enzymes to function within the confines of a proteinaceous core particle. These globular, cage-like polymerases are traversed by four well-defined tu...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2009.10.007
更新日期：2009-12-01 00:00:00
abstract：:Although intermediates have long been recognised as fascinating species that form during the folding of large proteins, the role that intermediates play in the folding of small, single-domain proteins has been widely debated. Recent discoveries using new, sensitive methods of detection and studies combining simulation...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2007.01.003
更新日期：2007-02-01 00:00:00
abstract：:Arf GTPases are major regulators of membrane traffic and organelle structure in eukaryotes where they recruit many different effectors, including components of vesicular coats, proteins that tether membranes, sort lipids or have diverse other functions in vesicular traffic, and bacterial proteins that divert Arf funct...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2014.09.007
更新日期：2014-12-01 00:00:00
abstract：:The polycomb repressive complex 2 (PRC2) is a conserved multiprotein, repressive chromatin complex essential for development and maintenance of eukaryotic cellular identity. PRC2 comprises a trimeric core of SUZ12, EED and EZH1/2, which together with RBBP4/7 is sufficient to catalyse mono-methylation, di-methylation a...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2020.10.017
更新日期：2020-11-21 00:00:00
abstract：:Bacterial transcription initiation is controlled by sigma factors, the RNA polymerase (RNAP) subunits responsive for promoter specificity. While the primary sigma factor ensures the bulk of transcription during growth, a major strategy used by bacteria to regulate gene expression consists of modifying the RNAP promote...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2015.01.006
更新日期：2015-02-01 00:00:00
abstract：:The alpha helices of transmembrane proteins interact to form higher order structures. These interactions are frequently mediated by packing motifs (such as GxxxG) and polar residues. Recent structural data have revealed that small sidechains are able to both stabilize helical membrane proteins and allow conformational...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/s0959-440x(03)00102-7
更新日期：2003-08-01 00:00:00
abstract：:Electrostatics plays a major role in the stabilization and function of biomolecules; as such, it remains a major focus of theoretical and computational studies of macromolecules. Electrostatic interactions are long range, and strongly dependent on the solvent and ions surrounding the biomolecule under study. During th...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2006.03.001
更新日期：2006-04-01 00:00:00
abstract：:Zinc finger proteins are among the most abundant proteins in eukaryotic genomes. Their functions are extraordinarily diverse and include DNA recognition, RNA packaging, transcriptional activation, regulation of apoptosis, protein folding and assembly, and lipid binding. Zinc finger structures are as diverse as their f...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/s0959-440x(00)00167-6
更新日期：2001-02-01 00:00:00
abstract：:Over recent years, nuclear magnetic resonance (NMR) spectroscopy has developed into a powerful mechanistic tool for the investigation of G protein-coupled receptors (GPCRs). NMR provides insights which underpin the dynamic nature of these important receptors and reveals experimental evidence for a complex conformation...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2019.03.030
更新日期：2019-08-01 00:00:00
abstract：:The exponential growth in the amount of genomic data published in recent years has led to increased efforts in analysing genomes for the presence of repeated sequences, which has in turn fostered the development of novel repeat recognition methods. This has resulted in a deepened understanding of the importance and ab...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/s0959-440x(98)80068-7
更新日期：1998-06-01 00:00:00
abstract：:The three-dimensional structures of several biotin-binding proteins are now known, giving insights into the molecular architecture of the binding sites for biotin. In combination with biochemical and computational approaches, these structural insights provide the basis for our present understanding of biotin-protein i...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/s0959-440x(96)80010-8
更新日期：1996-12-01 00:00:00
abstract：:You want to know how proteins do it? Take a walk in protein fold space. More often than not you will get a clue if not the answer. If you know what you are looking for and how to find it. In fact, there is more information than we can presently handle. Charting fold space and chasing its creatures has occupied us for ...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2009.03.010
更新日期：2009-06-01 00:00:00
abstract：:Transmembrane helix-helix interactions mediate the folding and assembly of membrane proteins. Recognition motifs range from GxxxG and leucine zippers to polar side chains and salt bridges. Some canonical membrane proteins contain local charge clusters that are important for folding and function, and which have to be c...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2014.05.003
更新日期：2014-08-01 00:00:00
abstract：:Translation initiation in eukaryotes is a complex multistep process that requires the interplay of over a dozen protein factors together with the small ribosomal subunit (SSU) and the mRNA. During all these steps, the SSU serves as a platform for attachment, displacement and release of different molecules. In recent y...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2018.08.006
更新日期：2018-12-01 00:00:00
abstract：:O-Glycosylation is an increasingly recognized modification of intracellular proteins in all kingdoms of life, and its occurrence in protists has been investigated to understand its evolution and its roles in the virulence of unicellular pathogens. We focus here on two kinds of glycoregulation found in unicellular euka...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2019.03.031
更新日期：2019-06-01 00:00:00
abstract：:The RNA exosome participates in the degradation and processing of a wide range of RNA molecules. Recent advances in understanding how the exosome is organized and functions largely stem from structural studies. Crystal structures of archaeal exosomes bound to RNA and of the corresponding nine-subunit human exosome cor...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2008.10.004
更新日期：2008-12-01 00:00:00
abstract：:Prediction and modeling of RNA structures has become an indispensable tool of biological research disciplines. Currently, reliable predictions require massive input of experimental data. Structure-forming elements are conventional base pairs, as well as a rapidly increasing repertoire of novel structural motifs. New d...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/s0959-440x(97)80030-9
更新日期：1997-04-01 00:00:00
abstract：:Molecular dynamics simulations of membrane proteins are making rapid progress, because of new high-resolution structures, advances in computer hardware and atomistic simulation algorithms, and the recent introduction of coarse-grained models for membranes and proteins. In addition to several large ion channel simulati...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2008.02.003
更新日期：2008-08-01 00:00:00
abstract：:The computational evaluation of protein-protein interactions will play an important role in organising the wealth of data being generated by high-throughput initiatives. Here we discuss future applications, report recent developments and identify areas requiring further investigation. Many functions have been develope...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2013.06.017
更新日期：2013-12-01 00:00:00
abstract：:This review focuses on recent structural insights into regulation and nucleic acid binding of Superfamily 2 (SF2)-type helicases as they relate to chromatin remodelers. We review structural features of the Chd1 chromatin remodeler regarding regulation of the ATPase motor, and discuss related strategies observed for ot...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2011.09.003
更新日期：2011-12-01 00:00:00
abstract：:H+ transporting, reversible F-type ATPases (ATP synthases) and V-type ATPases share major structural features and function by similar mechanisms. Recent structural and genetic experiments provide new insights into the organization of the transmembrane and coupling sectors of the enzymes and the molecular mechanics of ...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/s0959-440x(96)80114-x
更新日期：1996-08-01 00:00:00
abstract：:Asymmetric cell division (ACD) is a strategy for achieving cell diversity. Research carried out over the last two decades has shown that in some cell types that divide asymmetrically, mother and daughter centrosomes are noticeably different from one another in structure, behaviour, and fate, and that robust ACD depend...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2020.10.023
更新日期：2020-12-03 00:00:00
abstract：:Caspases are a family of aspartate-specific cysteine proteases that regulate cellular homeostasis through the mediation of apoptosis and inflammation. Despite keen interest in caspases as therapeutic targets for cancer, inflammatory, and neurodegenerative diseases, no active-site directed small molecule has yet succee...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2013.10.002
更新日期：2013-12-01 00:00:00
abstract：:An important goal of structural genomics is to complete the structural analysis of all the enzymes in metabolic pathways and to understand the structural similarities and differences. A preliminary glimpse of this type of analysis was achieved before structural genomics efforts with the glycolytic pathway and efforts ...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/s0959-440x(00)00154-8
更新日期：2000-12-01 00:00:00
abstract：:During the past few years, there have been exciting developments in the field of flavoenzymology. New flavoenzymes have been discovered that are implicated in a variety of biological processes, including cell signaling, chromatin remodeling and cell development. The structures of several of these new flavoenzymes have...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2006.10.003
更新日期：2006-12-01 00:00:00
abstract：:Lipidic mesophases have been used to produce diffraction-quality crystals of several membrane proteins. The mechanism by which the method works is a mystery. The thrust is to continue to use it whilst deciphering the underlying mechanism and solving the second 'phase problem' in membrane protein crystallography. The m...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/s0959-440x(00)00119-6
更新日期：2000-08-01 00:00:00
abstract：:Functional conformational changes of proteins can facilitate numerous biological events in cells. The Markov state model (MSM) built from molecular dynamics simulations provide a powerful approach to study them. We here introduce a protocol that is tailor-made for constructing MSMs to study the functional conformation...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/j.sbi.2020.10.005
更新日期：2020-10-27 00:00:00
abstract：:Terpenoid cyclases catalyze remarkably complex cyclization cascades that are initiated by the formation of a highly reactive carbocation in a polyisoprene substrate. Recent crystal structures of terpenoid cyclases show how these enzymes provide a template for binding and stabilizing the flexible substrate in the preci...
journal_title：Current opinion in structural biology
pub_type： 杂志文章,评审
doi：10.1016/s0959-440x(98)80088-2
更新日期：1998-12-01 00:00:00
