Linkage between dynamics and catalysis in a thermophilic-mesophilic enzyme pair.

abstract：:In eukaryotes, the essential dimeric molecular chaperone Hsp90 is required for the activation and maturation of specific substrates such as steroid hormone receptors, tyrosine kinases and transcription factors. Hsp90 is involved in the establishment of cancer and has become an attractive target for drug design. Here w...

journal_title：Nature structural & molecular biology

authors： Hagn F,Lagleder S,Retzlaff M,Rohrberg J,Demmer O,Richter K,Buchner J,Kessler H

更新日期：2011-09-04 00:00:00

abstract：:Targeted gene silencing by RNA interference (RNAi) requires loading of a short guide RNA (small interfering RNA (siRNA) or microRNA (miRNA)) onto an Argonaute protein to form the functional center of an RNA-induced silencing complex (RISC). In humans, Argonaute2 (AGO2) assembles with the guide RNA-generating enzyme Di...

journal_title：Nature structural & molecular biology

authors： Wang HW,Noland C,Siridechadilok B,Taylor DW,Ma E,Felderer K,Doudna JA,Nogales E

更新日期：2009-11-01 00:00:00

abstract：:Platelet-activating-factor receptor (PAFR) responds to platelet-activating factor (PAF), a phospholipid mediator of cell-to-cell communication that exhibits diverse physiological effects. PAFR is considered an important drug target for treating asthma, inflammation and cardiovascular diseases. Here we report crystal s...

journal_title：Nature structural & molecular biology

authors： Cao C,Tan Q,Xu C,He L,Yang L,Zhou Y,Zhou Y,Qiao A,Lu M,Yi C,Han GW,Wang X,Li X,Yang H,Rao Z,Jiang H,Zhao Y,Liu J,Stevens RC,Zhao Q,Zhang XC,Wu B

更新日期：2018-06-01 00:00:00

abstract：:The N-terminal acetylation of Sir3 is essential for heterochromatin establishment and maintenance in yeast, but its mechanism of action is unknown. The crystal structure of the N-terminally acetylated BAH domain of Saccharomyces cerevisiae Sir3 bound to the nucleosome core particle reveals that the N-terminal acetylat...

journal_title：Nature structural & molecular biology

authors： Arnaudo N,Fernández IS,McLaughlin SH,Peak-Chew SY,Rhodes D,Martino F

更新日期：2013-09-01 00:00:00

abstract：:To locate key RNA features in the structure of the spliceosome by EM, we fused a sequence-specific RNA binding protein to a protein with a distinct donut-shaped structure. We used this fusion to label spliceosomes assembled on a pre-mRNA that contained the target sequence in the exons. The label is clearly visible in ...

journal_title：Nature structural & molecular biology

authors： Alcid EA,Jurica MS

更新日期：2008-02-01 00:00:00

abstract：:The tumor suppressor p53 has been proposed to bind target promoters upon genotoxic stress. However, recent evidence shows that p53 occupies some target promoters without such stress, suggesting that a negative regulator might render p53 transcriptionally inactive on these promoters. Here we show that calcineurin bindi...

journal_title：Nature structural & molecular biology

authors： Jang H,Choi SY,Cho EJ,Youn HD

更新日期：2009-09-01 00:00:00

abstract：:Faithful chromosome segregation requires that the sister chromatids be disjoined completely. Defective disjunction can lead to the persistence of histone-free threads of DNA known as ultra-fine bridges (UFBs) that connect the separating sister DNA molecules during anaphase. UFBs arise at specific genomic loci and can ...

journal_title：Nature structural & molecular biology

authors： Sarlós K,Biebricher AS,Bizard AH,Bakx JAM,Ferreté-Bonastre AG,Modesti M,Paramasivam M,Yao Q,Peterman EJG,Wuite GJL,Hickson ID

更新日期：2018-09-01 00:00:00

abstract：:In budding yeast, DNA damage in G1 activates a Rad9-dependent checkpoint that targets the cyclin-dependent kinase (CDK) Cdc28 to delay G1 exit. After a transient arrest, cells may enter S phase before completing DNA repair. We used genetic analysis to identify the stress-responsive CDK Pho85, the cyclin Pho80 and the ...

journal_title：Nature structural & molecular biology

authors： Wysocki R,Javaheri A,Kristjansdottir K,Sha F,Kron SJ

更新日期：2006-10-01 00:00:00

abstract：:Many viruses bypass canonical cap-dependent translation in host cells by using internal ribosomal entry sites (IRESs) in their transcripts; IRESs hijack initiation factors for the assembly of initiation complexes. However, it is currently unknown how IRES RNAs recognize initiation factors that have no endogenous RNA b...

journal_title：Nature structural & molecular biology

authors： Imai S,Kumar P,Hellen CU,D'Souza VM,Wagner G

更新日期：2016-09-01 00:00:00

abstract：:The choice of codons can influence local translation kinetics during protein synthesis. Whether codon preference is linked to cotranslational regulation of polypeptide folding remains unclear. Here, we derive a revised translational efficiency scale that incorporates the competition between tRNA supply and demand. App...

journal_title：Nature structural & molecular biology

authors： Pechmann S,Frydman J

更新日期：2013-02-01 00:00:00

abstract：:The noncoding RNA Xist recruits silencing factors to the inactive X chromosome (Xi) and facilitates re-organization of Xi structure. Here, we examine the mouse epigenomic landscape of Xi and assess how Xist alters chromatin accessibility. Xist deletion triggers a gain of accessibility of select chromatin regions that ...

journal_title：Nature structural & molecular biology

authors： Jégu T,Blum R,Cochrane JC,Yang L,Wang CY,Gilles ME,Colognori D,Szanto A,Marr SK,Kingston RE,Lee JT

更新日期：2019-02-01 00:00:00

abstract：:Brr2 is a DExD/H-box helicase responsible for U4/U6 unwinding during spliceosomal activation. Brr2 contains two helicase-like domains, each of which is followed by a Sec63 domain with unknown function. We determined the crystal structure of the second Sec63 domain, which unexpectedly resembles domains 4 and 5 of DNA h...

journal_title：Nature structural & molecular biology

authors： Zhang L,Xu T,Maeder C,Bud LO,Shanks J,Nix J,Guthrie C,Pleiss JA,Zhao R

更新日期：2009-07-01 00:00:00

abstract：:The WAVE regulatory complex (WRC) transmits information from the Rac GTPase to the actin nucleator Arp2/3 complex. We have reconstituted recombinant human and Drosophila WRC in several forms and shown that they are inactive toward Arp2/3 complex but can be activated by Rac in a nucleotide-dependent fashion. Our observ...

journal_title：Nature structural & molecular biology

authors： Ismail AM,Padrick SB,Chen B,Umetani J,Rosen MK

更新日期：2009-05-01 00:00:00

abstract：:Expansion of CAG/CTG trinucleotide repeats is associated with certain familial neurological disorders, including Huntington's disease. Increasing evidence suggests that formation of a stable DNA hairpin within CAG/CTG repeats during DNA metabolism contributes to their expansion. However, the molecular mechanism(s) by ...

journal_title：Nature structural & molecular biology

authors： Hou C,Chan NL,Gu L,Li GM

更新日期：2009-08-01 00:00:00

abstract：:To catalyze pre-mRNA splicing, U6 small nuclear RNA positions two metals that interact directly with the scissile phosphates. U6 metal ligands correspond stereospecifically to metal ligands within the catalytic domain V of a group II self-splicing intron. Domain V ligands are organized by base-triple interactions, whi...

journal_title：Nature structural & molecular biology

authors： Fica SM,Mefford MA,Piccirilli JA,Staley JP

更新日期：2014-05-01 00:00:00

abstract：:The iota toxin produced by Clostridium perfringens type E is a binary toxin comprising two independent polypeptides: Ia, an ADP-ribosyltransferase, and Ib, which is involved in cell binding and translocation of Ia across the cell membrane. Here we report cryo-EM structures of the translocation channel Ib-pore and its ...

journal_title：Nature structural & molecular biology

authors： Yamada T,Yoshida T,Kawamoto A,Mitsuoka K,Iwasaki K,Tsuge H

更新日期：2020-03-01 00:00:00

abstract：:Cells respond to changes in environmental conditions via orchestrated modifications in gene expression. For example, in response to heat shock, cells execute a program of gene-specific transcriptional activation and repression. Although the activation of genes upon heat shock has been widely studied, the mechanism of ...

journal_title：Nature structural & molecular biology

authors： Allen TA,Von Kaenel S,Goodrich JA,Kugel JF

更新日期：2004-09-01 00:00:00

abstract：:In eukaryotic cells, many introns are constitutively, rather than alternatively, spliced and therefore do not contribute to isoform diversification. It has remained unclear what functional roles such constitutive splicing provides. To explore this issue, we asked how splicing affects the efficiency with which individu...

journal_title：Nature structural & molecular biology

authors： Ding F,Elowitz MB

更新日期：2019-06-01 00:00:00

abstract：:DNA ligases finalize DNA replication and repair through DNA nick-sealing reactions that can abort to generate cytotoxic 5'-adenylation DNA damage. Aprataxin (Aptx) catalyzes direct reversal of 5'-adenylate adducts to protect genome integrity. Here the structure of a Schizosaccharomyces pombe Aptx-DNA-AMP-Zn(2+) comple...

journal_title：Nature structural & molecular biology

authors： Tumbale P,Appel CD,Kraehenbuehl R,Robertson PD,Williams JS,Krahn J,Ahel I,Williams RS

更新日期：2011-10-09 00:00:00

abstract：:Allosteric interactions are typically considered to proceed through a series of discrete changes in bonding interactions that alter the protein conformation. Here we show that allostery can be mediated exclusively by transmitted changes in protein motions. We have characterized the negatively cooperative binding of cA...

journal_title：Nature structural & molecular biology

authors： Popovych N,Sun S,Ebright RH,Kalodimos CG

更新日期：2006-09-01 00:00:00

abstract：:The ability of barrier-to-autointegration factor (BAF) to bind and bridge DNA in a sequence-independent manner is crucial for its role in retroviral integration and a variety of cellular processes. To better understand this behavior, we solved the crystal structure of BAF bound to DNA. The structure reveals that BAF b...

journal_title：Nature structural & molecular biology

authors： Bradley CM,Ronning DR,Ghirlando R,Craigie R,Dyda F

更新日期：2005-10-01 00:00:00

abstract：:Pre-messenger RNAs (pre-mRNAs) maturation is initiated cotranscriptionally. It is therefore conceivable that chromatin-borne information participates in alternative splicing. Here we find that elevated levels of trimethylation of histone H3 on Lys9 (H3K9me3) are a characteristic of the alternative exons of several gen...

journal_title：Nature structural & molecular biology

authors： Saint-André V,Batsché E,Rachez C,Muchardt C

更新日期：2011-03-01 00:00:00

abstract：:The core of the neurotransmitter release machinery is formed by SNARE complexes, which bring the vesicle and plasma membranes together and are key for fusion, and by Munc18-1, which controls SNARE-complex formation and may also have a direct role in fusion. In addition, SNARE complex assembly is likely orchestrated by...

journal_title：Nature structural & molecular biology

authors： Rizo J,Rosenmund C

更新日期：2008-07-01 00:00:00

abstract：:Advances in structure determination of the bacterial and eukaryotic transcription machinery have led to a marked increase in the understanding of the mechanism of transcription. Models for the specific assembly of the RNA polymerase II transcription machinery at a promoter, conformational changes that occur during ini...

journal_title：Nature structural & molecular biology

authors： Hahn S

更新日期：2004-05-01 00:00:00

abstract：:Proteins regulate gene expression by controlling mRNA biogenesis, localization, translation and decay. Identifying the composition, diversity and function of mRNA-protein complexes (mRNPs) is essential to understanding these processes. In a global survey of Saccharomyces cerevisiae mRNA-binding proteins, we identified...

journal_title：Nature structural & molecular biology

authors： Mitchell SF,Jain S,She M,Parker R

更新日期：2013-01-01 00:00:00

abstract：:We have determined the solution structure of the complex between an arginine-glycine-rich RGG peptide from the human fragile X mental retardation protein (FMRP) and an in vitro-selected guanine-rich (G-rich) sc1 RNA. The bound RNA forms a newly discovered G-quadruplex separated from the flanking duplex stem by a mixed...

journal_title：Nature structural & molecular biology

authors： Phan AT,Kuryavyi V,Darnell JC,Serganov A,Majumdar A,Ilin S,Raslin T,Polonskaia A,Chen C,Clain D,Darnell RB,Patel DJ

更新日期：2011-06-05 00:00:00

abstract：:Thymic stromal lymphopoietin (TSLP), a cytokine produced by epithelial cells at barrier surfaces, is pivotal for the development of widespread chronic inflammatory disorders such as asthma and atopic dermatitis. The structure of the mouse TSLP-mediated signaling complex reveals how TSLP establishes extensive interface...

journal_title：Nature structural & molecular biology

authors： Verstraete K,van Schie L,Vyncke L,Bloch Y,Tavernier J,Pauwels E,Peelman F,Savvides SN

更新日期：2014-04-01 00:00:00

abstract：:Gating the ion-permeation pathway in K(+) channels requires conformational changes in activation and inactivation gates. Here we have investigated the structural alterations associated with pH-dependent inactivation gating of the KcsA-Kv1.3 K(+) channel using solid-state NMR spectroscopy in direct reference to electro...

journal_title：Nature structural & molecular biology

authors： Ader C,Schneider R,Hornig S,Velisetty P,Wilson EM,Lange A,Giller K,Ohmert I,Martin-Eauclaire MF,Trauner D,Becker S,Pongs O,Baldus M

更新日期：2008-06-01 00:00:00

abstract：:Trimethylation of Lys36 in histone H3 (H3K36me3) coordinates events associated with the elongation phase of transcription and is also emerging as an important epigenetic regulator of cell growth and differentiation. We have identified the PWWP domain of bromo and plant homeodomain (PHD) finger-containing protein 1 (BR...

journal_title：Nature structural & molecular biology

authors： Vezzoli A,Bonadies N,Allen MD,Freund SM,Santiveri CM,Kvinlaug BT,Huntly BJ,Göttgens B,Bycroft M

更新日期：2010-05-01 00:00:00

abstract：:Here we report the crystal structures of I.C and I.A wobble base pairs in the context of the ribosomal decoding center, clearly showing that the I.A base pair is of an I(anti).A(anti) conformation, as predicted by Crick. Additionally, the structures enable the observation of changes in the anticodon to allow purine-pu...

journal_title：Nature structural & molecular biology

authors： Murphy FV 4th,Ramakrishnan V

更新日期：2004-12-01 00:00:00