A core complex of CPSF73, CPSF100, and Symplekin may form two different cleavage factors for processing of poly(A) and histone mRNAs.

abstract：:Despite the relevance of Argonaute proteins in RNA silencing, little is known about the structural steps of small RNA loading to form RNA-induced silencing complexes (RISCs). We report the 1.9 Å crystal structure of human Argonaute4 with guide RNA. Comparison with the previously determined apo structure of Neurospora ...

journal_title：Molecular cell

authors： Park MS,Araya-Secchi R,Brackbill JA,Phan HD,Kehling AC,Abd El-Wahab EW,Dayeh DM,Sotomayor M,Nakanishi K

更新日期：2019-08-22 00:00:00

abstract：:Group II intron RNPs are mobile genetic elements that attack and invade duplex DNA. In this work, we monitor the invasion reaction in vitro and establish a quantitative kinetic framework for the steps of this complex cascade. We find that target site specificity is achieved after DNA binding, which occurs nonspecifica...

journal_title：Molecular cell

authors： Aizawa Y,Xiang Q,Lambowitz AM,Pyle AM

更新日期：2003-03-01 00:00:00

abstract：:The majority of the human genome is transcribed into non-coding (nc)RNAs that lack known biological functions or else are only partially characterized. Numerous characterized ncRNAs function via base pairing with target RNA sequences to direct their biological activities, which include critical roles in RNA processing...

journal_title：Molecular cell

authors： Sharma E,Sterne-Weiler T,O'Hanlon D,Blencowe BJ

更新日期：2016-05-19 00:00:00

abstract：:Initiation sites for DNA synthesis in the chromosomal autonomously replicating sequence (ARS)1 of Saccharomyces cerevisiae were detected at the nucleotide level. The transition from discontinuous to continuous synthesis defines the origin of bidirectional replication (OBR), which mapped adjacent to the origin recognit...

journal_title：Molecular cell

authors： Bielinsky AK,Gerbi SA

更新日期：1999-04-01 00:00:00

abstract：:The oncoprotein BCL-3 is a nuclear transcription factor that activates NF-kappaB target genes through formation of heterocomplexes with p50 or p52. BCL-3 is phosphorylated in vivo, but specific BCL-3 kinases have not been identified so far. In this report, we show that BCL-3 is a substrate for the protein kinase GSK3 ...

journal_title：Molecular cell

authors： Viatour P,Dejardin E,Warnier M,Lair F,Claudio E,Bureau F,Marine JC,Merville MP,Maurer U,Green D,Piette J,Siebenlist U,Bours V,Chariot A

更新日期：2004-10-08 00:00:00

abstract：:Plant pattern recognition receptors (PRRs) perceive microbial and endogenous molecular patterns to activate immune signaling. The cytoplasmic kinase BIK1 acts downstream of multiple PRRs as a rate-limiting component, whose phosphorylation and accumulation are central to immune signal propagation. Previous work identif...

journal_title：Molecular cell

authors： Wang J,Grubb LE,Wang J,Liang X,Li L,Gao C,Ma M,Feng F,Li M,Li L,Zhang X,Yu F,Xie Q,Chen S,Zipfel C,Monaghan J,Zhou JM

更新日期：2018-02-01 00:00:00

abstract：:Staphylococcus aureus virulence is regulated when secreted autoinducing peptides (AIPs) are recognized by a membrane-bound receptor histidine kinase (RHK), AgrC. Some AIPs are agonists of virulence gene expression, while others are antagonists. It is unclear how AIP binding regulates AgrC activity. Here, we reconstitu...

journal_title：Molecular cell

authors： Wang B,Zhao A,Novick RP,Muir TW

更新日期：2014-03-20 00:00:00

abstract：:The duplication of eukaryotic genomes involves the replication of DNA from multiple origins of replication. In S phase, two sister replisomes assemble at each active origin, and they replicate DNA in opposite directions. Little is known about the functional relationship between sister replisomes. Some data imply that ...

journal_title：Molecular cell

authors： Yardimci H,Loveland AB,Habuchi S,van Oijen AM,Walter JC

更新日期：2010-12-10 00:00:00

abstract：:Cells constantly adjust their metabolism in response to environmental conditions, yet major mechanisms underlying survival remain poorly understood. We discover a posttranscriptional mechanism that integrates starvation response with GTP homeostasis to allow survival, enacted by the nucleotide (p)ppGpp, a key player i...

journal_title：Molecular cell

authors： Kriel A,Bittner AN,Kim SH,Liu K,Tehranchi AK,Zou WY,Rendon S,Chen R,Tu BP,Wang JD

更新日期：2012-10-26 00:00:00

abstract：:Nhp6A and Nhp6B are HMG1-like proteins required for the growth of S. cerevisiae at elevated temperatures. We show that the conditional lethality of an nhp6 strain results from defective transcription of SNR6 (U6 snRNA) by RNA polymerase III. Overexpression of U6 snRNA or Brf1, a limiting component of TFIIIB, and an ac...

journal_title：Molecular cell

authors： Kruppa M,Moir RD,Kolodrubetz D,Willis IM

更新日期：2001-02-01 00:00:00

abstract：:The intracellular regulation of cell death pathways by cIAPs has been enigmatic. Here we show that loss of cIAPs promotes the spontaneous formation of an intracellular platform that activates either apoptosis or necroptosis. This 2 MDa intracellular complex that we designate "Ripoptosome" is necessary but not sufficie...

journal_title：Molecular cell

authors： Feoktistova M,Geserick P,Kellert B,Dimitrova DP,Langlais C,Hupe M,Cain K,MacFarlane M,Häcker G,Leverkus M

更新日期：2011-08-05 00:00:00

abstract：:Given the intimate link between inflammation and dysregulated cell proliferation in cancer, we investigated cytokine-triggered gene expression in different cell cycle stages. Transcriptome analysis revealed that G1 release through cyclin-dependent kinase 6 (CDK6) and CDK4 primes and cooperates with the cytokine-driven...

journal_title：Molecular cell

authors： Handschick K,Beuerlein K,Jurida L,Bartkuhn M,Müller H,Soelch J,Weber A,Dittrich-Breiholz O,Schneider H,Scharfe M,Jarek M,Stellzig J,Schmitz ML,Kracht M

更新日期：2014-01-23 00:00:00

abstract：:Cell death, as a foil to cell expansion, has become one of the most intensively studied research areas of modern biology. Almost every aspect of life is intimately enmeshed with the proper regulation of cell death, which either contributes to or forms the basis of most human disease pathogenesis. Now, with our ever-ex...

journal_title：Molecular cell

authors： Meier P,Vousden KH

更新日期：2007-12-14 00:00:00

abstract：:The ring-shaped hetero-oligomeric chaperonin TRiC/CCT uses ATP to fold a diverse subset of eukaryotic proteins. To define the basis of TRiC/CCT substrate recognition, we mapped the chaperonin interactions with the VHL tumor suppressor. VHL has two well-defined TRiC binding determinants. Each determinant contacts a spe...

journal_title：Molecular cell

authors： Spiess C,Miller EJ,McClellan AJ,Frydman J

更新日期：2006-10-06 00:00:00

abstract：:The Myc oncoprotein represses initiator-dependent transcription through the POZ domain transcription factor Miz-1. We now show that transactivation by Miz-1 is negatively regulated by association with topoisomerase II binding protein (TopBP1); UV irradiation downregulates expression of TopBP1 and releases Miz-1. Miz-1...

journal_title：Molecular cell

authors： Herold S,Wanzel M,Beuger V,Frohme C,Beul D,Hillukkala T,Syvaoja J,Saluz HP,Haenel F,Eilers M

更新日期：2002-09-01 00:00:00

abstract：:Circadian rhythms in mammals are generated by a transcriptional negative feedback loop that is driven primarily by oscillations of PER and CRY, which inhibit their own transcriptional activators, CLOCK and BMAL1. Current models posit that CRY is the dominant repressor, while PER may play an accessory role. In this stu...

journal_title：Molecular cell

authors： Chen R,Schirmer A,Lee Y,Lee H,Kumar V,Yoo SH,Takahashi JS,Lee C

更新日期：2009-11-13 00:00:00

abstract：:Proteins with annealing activity are newly identified ATP-dependent motors that can rewind RPA-coated complementary single-stranded DNA bubbles. AH2 (annealing helicase 2, also named as ZRANB3) is the second protein with annealing activity, the function of which is still unknown. Here, we report that AH2 is recruited ...

journal_title：Molecular cell

authors： Yuan J,Ghosal G,Chen J

更新日期：2012-08-10 00:00:00

abstract：:The Mediator complex connects transcriptional activators bound at enhancers with RNA polymerase (Pol) II. demonstrate that Mediator also has an important role in transcriptional activation after recruitment of the Pol II machinery to promoters. ...

journal_title：Molecular cell

authors： Struhl K

更新日期：2005-03-18 00:00:00

abstract：:Activation of protein kinase clients by the Hsp90 system is mediated by the cochaperone protein Cdc37. Cdc37 requires phosphorylation at Ser13, but little is known about the regulation of this essential posttranslational modification. We show that Ser13 of uncomplexed Cdc37 is phosphorylated in vivo, as well as in bin...

journal_title：Molecular cell

authors： Vaughan CK,Mollapour M,Smith JR,Truman A,Hu B,Good VM,Panaretou B,Neckers L,Clarke PA,Workman P,Piper PW,Prodromou C,Pearl LH

更新日期：2008-09-26 00:00:00

abstract：:Prokaryotes use a mechanism called priming to update their CRISPR immunological memory to rapidly counter revisiting, mutated viruses, and plasmids. Here we have determined how new spacers are produced and selected for integration into the CRISPR array during priming. We show that Cas3 couples CRISPR interference to a...

journal_title：Molecular cell

authors： Künne T,Kieper SN,Bannenberg JW,Vogel AI,Miellet WR,Klein M,Depken M,Suarez-Diez M,Brouns SJ

更新日期：2016-09-01 00:00:00

abstract：:Our previous study showed that ubiquitination of p53 is reversible and that the ubiquitin hydrolase HAUSP can stabilize p53 by deubiquitination. Here, we found that partial reduction of endogenous HAUSP levels by RNAi indeed destabilizes endogenous p53; surprisingly, however, nearly complete ablation of HAUSP stabiliz...

journal_title：Molecular cell

authors： Li M,Brooks CL,Kon N,Gu W

更新日期：2004-03-26 00:00:00

abstract：:Poly(ADP-ribose) polymerase-1 (PARP-1) creates the posttranslational modification PAR from substrate NAD(+) to regulate multiple cellular processes. DNA breaks sharply elevate PARP-1 catalytic activity to mount a cell survival repair response, whereas persistent PARP-1 hyperactivation during severe genotoxic stress is...

journal_title：Molecular cell

authors： Dawicki-McKenna JM,Langelier MF,DeNizio JE,Riccio AA,Cao CD,Karch KR,McCauley M,Steffen JD,Black BE,Pascal JM

更新日期：2015-12-03 00:00:00

abstract：:Negative selection eliminates thymocytes bearing autoreactive T cell receptors (TCR) via an apoptotic mechanism. We have cloned an inhibitor of NF-kappa B, I kappa BNS, which is rapidly expressed upon TCR-triggered but not dexamethasone- or gamma irradiation-stimulated thymocyte death. The predicted protein contains s...

journal_title：Molecular cell

authors： Fiorini E,Schmitz I,Marissen WE,Osborn SL,Touma M,Sasada T,Reche PA,Tibaldi EV,Hussey RE,Kruisbeek AM,Reinherz EL,Clayton LK

更新日期：2002-03-01 00:00:00

abstract：:The tumor suppressor p53 transcriptionally activates target genes to suppress cellular proliferation during stress. p53 has also been implicated in the repression of the proto-oncogene Myc, but the mechanism has remained unclear. Here, we identify Pvt1b, a p53-dependent isoform of the long noncoding RNA (lncRNA) Pvt1,...

journal_title：Molecular cell

authors： Olivero CE,Martínez-Terroba E,Zimmer J,Liao C,Tesfaye E,Hooshdaran N,Schofield JA,Bendor J,Fang D,Simon MD,Zamudio JR,Dimitrova N

更新日期：2020-02-20 00:00:00

abstract：:The heat shock protein 90 (Hsp90) family of heat shock proteins is an abundantly expressed and highly conserved family of ATP-dependent molecular chaperones. Hsp90 facilitates remodeling and activation of hundreds of proteins. In this study, we developed a screen to identify Hsp90-defective mutants in E. coli. The mut...

journal_title：Molecular cell

authors： Genest O,Reidy M,Street TO,Hoskins JR,Camberg JL,Agard DA,Masison DC,Wickner S

更新日期：2013-02-07 00:00:00

abstract：:Argonaute proteins associate with small RNAs that guide mRNA degradation, translational repression, or a combination of both. The human Argonaute family has eight members, four of which (Ago1 through Ago4) are closely related and coexpressed in many cell types. To understand the biological function of the different Ag...

journal_title：Molecular cell

authors： Meister G,Landthaler M,Patkaniowska A,Dorsett Y,Teng G,Tuschl T

更新日期：2004-07-23 00:00:00

abstract：:The RNA-binding protein Sam68 is implicated in various cellular processes including RNA metabolism, apoptosis, and signal transduction. Here we identify a role of Sam68 in TNF-induced NF-κB activation and apoptosis. We found that Sam68 is recruited to the TNF receptor, and its deficiency dramatically reduces RIP recru...

journal_title：Molecular cell

authors： Ramakrishnan P,Baltimore D

更新日期：2011-07-22 00:00:00

abstract：:When inappropriate DNA structures arise, they are sensed by DNA structure-dependent checkpoint pathways and subsequently repaired. Recruitment of checkpoint proteins to such structures precedes recruitment of proteins involved in DNA metabolism. Thus, checkpoints can regulate DNA metabolism. We show that fission yeast...

journal_title：Molecular cell

authors： Furuya K,Miyabe I,Tsutsui Y,Paderi F,Kakusho N,Masai H,Niki H,Carr AM

更新日期：2010-11-24 00:00:00

abstract：:The HECT E3 ligases ubiquitinate numerous transcription factors and signaling molecules, and their activity must be tightly controlled to prevent cancer, immune disorders, and other diseases. In this study, we have found unexpectedly that peptide linkers tethering WW domains in several HECT family members are key regu...

journal_title：Molecular cell

authors： Chen Z,Jiang H,Xu W,Li X,Dempsey DR,Zhang X,Devreotes P,Wolberger C,Amzel LM,Gabelli SB,Cole PA

更新日期：2017-05-04 00:00:00

abstract：:Perfringolysin O, a bacterial cytolytic toxin, forms unusually large pores in cholesterol-containing membranes by the spontaneous insertion of two of its four domains into the bilayer. By monitoring the kinetics of domain-specific conformational changes and pore formation using fluorescence spectroscopy, the temporal ...

journal_title：Molecular cell

authors： Heuck AP,Hotze EM,Tweten RK,Johnson AE

更新日期：2000-11-01 00:00:00