简介：Circulargenomes,beingthelargestproportionofsequencedgenomes,playanimportantroleingenomeanalysis.However,traditional2Dcircularmaponlyprovidesanoverviewandannotationsofgenomebutdoesnotofferfeature-basedcomparison.Forremedyingtheseshortcomings,wedeveloped3DGenomeTuner,ahybridofcircularmapandcomparativemaptools.Itscapabilityofviewingcomparisonsbetweenmultiplecircularmapsina3Dspaceoffersgreatbenefitstothestudyofcomparativegenomics.Theprogramisfreelyavailable(underanLGPLlicence)athttp://sourceforge.net/projects/dgenometuner.

简介：Ithasbeenshownthattheprogressinthedeterminationofmembraneproteinstructuregrowsexponentially,withapproximatelythesamegrowthrateasthatofthewater-solubleproteins.Inordertoinvestigatetheeffectofthis,ontheperformanceofpredictionalgorithmsforbothα-helicalandβ-barrelmembraneproteins,weconductedaprospectivestudybasedonhistoricalrecords.WetrainedseparatehiddenMarkovmodelswithdifferentsizedtrainingsetsandevaluatedtheirperformanceontopologypredictionforthetwoclassesoftransmembraneproteins.Weshowthattheexistingtop-scoringalgorithmsforpredictingthetransmembranesegmentsofα-helicalmembraneproteinsperformslightlybetterthanthatofβ-barreloutermembraneproteinsinallmeasuresofaccuracy.Withthesamerationale,ameta-analysisoftheperformanceofthesecondarystructurepredictionalgorithmsindicatesthatexistingalgorithmictechniquescannotbefurtherimprovedbyjustaddingmorenon-homologoussequencestothetrainingsets.Theupperlimitforsecondarystructurepredictionisestimatedtobenomorethan70%and80%ofcorrectlypredictedresiduesforsinglesequencebasedmethodsandmultiplesequencebasedones,respectively.Therefore,weshouldconcentrateoureffortsonutilizingnewtechniquesforthedevelopmentofevenbetterscoringpredictors.

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简介：Werecentlyreportedtheuseofagene-trappingapproachtoisolatecellclonesinwhichareportergenehadintegratedintogenesmodulatedbyT-cellactivation.WehavenowtestedapanelofclonesfromthatreportandidentifiedtheonethatrespondstoavarietyofG-proteincoupledreceptors(GPCR).TheβlactamasetaggedEGR-3JurkatcellwasusedtodissectspecificGPCRsignalinginvivo.ThreeGPCRswerestudied,includingthechemokinereceptorCXCR4(Gicoupled)thatwasendogenouslyexpressed,theplateletactivationfactor(PAF)receptor(Gq-coupled),andβ2adrenergicreceptor(Gs-coupled)thatwasbothstablytransfected.Agonistsforeachreceptoractivatedtranscriptionoftheβ-lactamasetaggedEGR-3gene.InductionofEGR-3throughCXCR4wasblockedbypertussistoxinandPD58059,aspecificinhibitorofMEK(MAPK/ERKkinase).NeitheroftheseinhibitorsblockedisoproterenolorPAF-mediatedactivationofEGR-3.Conversely,β2-andPAF-mediatedEGR-3activationwasblockedbythep38,specificinhibitorSB580.Inaddition,bothβ2-andPAF-mediatedEGR-3activationcouldbesynergisticallyactivatedbyCXCR4activation.ThiscombinedresultindicatesthatEGR-3canbeactivatedthroughdistinctsignaltransductionpathwaysbydifferentGPCRsandthatsignalscanbeintegratedandamplifiedtoefficientlytunethelevelofactivation.

简介：ThisisthespecialissuedevotedtobioinformaticsresearchinSingapore.BioinformaticsresearchinSingaporestartedlargelyin1996whentheBioinformaticsCenter,NationalUniversityofSingapore,wasformed.Withthegovernment'seffortstoturnSingaporeintoapowerhouseofbiomedicalresearch,theGenomeInstituteofSingaporeandtheBioinformaticsInstituteofSingaporehavebeenestablishedsince2000.Recently,abioinformaticsresearchcenterwasalsoformedintheNanyangTechnologicalUniversity.Currently,therearealargenumberofbioinformaticsresearchteamsineachoftheseinstitutions.

简介：Thecorona-likespikesorpeplomersonthesurfaceofthevirionunderelectronicmicroscopearethemoststrikingfeaturesofcoronaviruses.TheS(spike)proteinisthelargeststructuralprotein,with1,255aminoacids,intheviralgenome.Itsstructurecanbedividedintothreeregions:alongN-terminalregionintheexte-rior,acharacteristictransmembrane(TM)region,andashortC-terminusintheinteriorofavirion.WedetectedfifteensubstitutionsofnucleotidesbycomparisonswiththeseventeenpublishedSARS-CoVgenomesequences,eight(53.3%)ofwhicharenon-synonymousmutationsleadingtoaminoacidalternationswithpredictedphysiochemicalchanges.ThepossibleantigenicdeterminantsoftheSproteinarepredicted,andtheresultisconfirmedbyELISA(enzyme-linkedimmunosorbentassay)withsynthesizedpeptides.AnotherprofoundfindingisthatthreedisulfidebondsaredefinedattheC-terminuswiththeN-terminusoftheE(envelope)pro-tein,basedonthetypicalsequenceandpositions,thusestablishingthestructuralconnectionwiththesetwoimportantstructuralproteins,ifconfirmed.Phyloge-neticanalysisrevealsseveralconservedregionsthatmightbepotentdrugtargets.

简介：以便获得米饭幼仔圆锥花序proteome的高分辨率的electrophorogram，我们评估了通常使用在的各种各样的协议二维(2D)蛋白质的polyacrylamide胶化电气泳动(页)包括染色协议的胶化，使不能调动的pH坡度(IPG)的pH范围脱衣并且样品装载数量。结果证明染色协议使用的银敏化包含冰川的醋酸，钠醋酸盐和钠thiosulfate的答案(在1988由Heukeshoven和Dernick报导了)并且染色方法使用答案包含的Coomassie灿烂的蓝色G-250，铵硫酸盐和磷的酸(在2010由粉红色的等报导了)表明了优异染色效果。另外，当有5-8的pH范围的IPG胶化长带被使用时，我们也与4-7的pH范围证明更高的分辨率被完成，与那相比。最后，最佳的装载数量作为与染色协议的银硝酸盐在联合与pH5-8使用17厘米长的非线性的IPG长带的130g被决定。评估结果将在年轻米饭颖果的proteome分析是有用的。

简介：用定序技术的16SrDNA基因，entomopatho遗传因子的线虫(杀虫剂的一种)的非共生的细菌的三不同的种(Steinernemasp。并且Heterorhabditissp)从感染的昆虫死尸被孤立并且识别{街郎mellonella幼虫)在48小时的柱子感染以后。顺序类似分析表明紧张SRK3，SRK4和SRK5分别地属于Ochrobactrumcytisi，Schineria幼虫和Ochrobactrumanthropi。isolatesO。anthropi和S。幼虫被发现分别地，而，与Heterorhabditisindica紧张BDU-17和Yer-136被联系O。cytisi与Steinernemasiamkayai紧张BDU-87被联系。Phenotypically，时间的杀虫剂的一种细菌是相当与共生杀虫剂的一种细菌(Photorhabdus和Xenorhabdus类)有关。紧张SRK3和SRK5phylogeographically类似于几非共生者并且污染了在德国(LMG3311T)和中国(X-14)孤立的杀虫剂的一种细菌，当紧张SRK4与S的isolates相同时。从在匈牙利的Wohlfahrtiamagnifica的幼虫(Ll/57，Ll/58，Ll/68和L2/11)。结果被RNA第二等的结构和排列序列的最小的精力计算进一步证实。这研究建议这些线虫的非共生者phylogeographically由于阶段变化在某程度被分叉。因此，这些紧张不是主人依赖者，但是环境特定孤立。