简介：

简介：Animidazolemodifiedsilverelectrodeispreparedbyimmersingthesubstratesilverelectrodeina2%imidazolesolutionofethanolat50℃for10min.Themodifiedelectrodeisthensweptinacytochromecsolutionandthemodifiedlayertakesoffbecausethemodifiedelectrodeisveryunstable.Althoughtheamountofthesilver-imidazolecomplexisverysmallcomparedwiththeamountofcytochromecintheproteinsolution,itgreatlyfacilitatesredoxreactionsinvolvingthebiomacromolecules.

简介：SequencevariationofpartialcytochromebgenesbetweentwoCoiliaspecies,C.ectenesandC.mystus,wasinvestigated.Ofthe402nucleotides,twenty-seven(6.72%)arepolymorphicandallaresynonymoussubstitutions.Atthethirdpositionsofgeneticcondonofcytochromebgene,thetwospeciesshowanextremeanti-Gbias(＜4%)andapronouncedbiastowardsAandC(＞68%).Thereisnoaminoacidsequencedivergencebetweenthepartialcytochromebgenesofthetwospecies,indicatingaclosegeneticrelationshipbetweenthem.Thek-2pgeneticdistanceofpartialcytochromebsegmentofthetwospeciesis0.072,suggestingthatthespecieswereseparated3.6Maago,inthemiddlePliocene.Ourresultrevealsthatthecytochromebgeneisanappropriatemarkerforstudiesofpopulationgeneticstructuresandphylogeographicpatternsofthetwospecies.

简介：CytochromeP450(CYP)superfamilyisoneofthemembershiplargestandfunctionmostdiverseproteinsuperfamilyrecogniozedamonglivingbeings.Membersofthissuperfamilywerefurtherassignedtodifferentfamiliesandsubfamiliesbasedontheiraminoacidsimilarities.Accordingtotheirphylogeneticrelationships,theCYPgeneswhichlikelydivergedfromcommonancestorgeneandmaysharecommonfunctionsweregroupedintooneclan.Widelydistributingscallopsareagroupofthemostconspicuousbivalve;howeverthestudiesontheirCYPisacarce.Inthisstudy,wesearchedthegenomeandexpressedsequencetagsofZhikongscallop(Chlamysfarreri)forCYPgenes.Intotal,88non-redundantCYPwereidentified,whichwerehomedin13CYPsgenefamilies.Phylogeneticanalysisdividedthesegenesinto4CYPclans.Asindeuterostomes,Clan2wasthelargest,whichcontained33genesbelongingtoCYP1,CYP2,CYP17andCYP356families.Clan3contgained19genesbelongingtoCYP3,CYP5andCYP30families.Clan4contained23genes,allbelongingtoCYP4family.ThemitochondrialCYPclancontained9genesbelongingtoCYP10andCYP24families.Incomparison,protostomes(C.farreri,D.pluex,D.melanogaster)containedmoreCYPgenesthandeuterostomes(S.purpuratusandvertebrates)inClan2butlessgenesinClan3andClan4.OurfindingswillaidtodecipheringCYPfunctionandevolutioninscallopsandbivalves.

简介：从胖身体和棉花一种蛾的幼虫的中间的勇气的细胞色素P450(Cyt-P450)蛋白质，Helicoverpa有佩带徽章权利的人一，被一套纯化过程部分分别地包括微分离心分离，小伙子的增溶，由木钉降水的蛋白质降水和DE-32柱层析净化。Cyt-P450被COdifference光谱和SDS页的方法检测。从胖身体ofH的净化的solubilized微体的部分。有佩带徽章权利的人一多于17褶层被净化。三个蛋白质乐队被SDS页与分子的群众检测70600，63300和571200Da。有63300和571200Da的分子的质量的蛋白质是Cyt-P450的isozymes，是可能的。

简介：新奇tetra-carboxylphenyl杯的相互作用[4]有牛的心细胞色素c(Cc)的arene(TCPC)被荧光光谱学和分子的建模方法首先调查。稳定的1:1建筑群的形成被荧光滴定监视，并且它的有约束力的常数是1.916脳107L摩尔?1。分子的建模揭示TCPC的识别机制到Cc表面，也就是说，静电的相互作用驾驶TCPC到Cc表面，并且货车derWaals相互作用面向TCPC平行到Cc劈开。

简介：CytoehromeP450norgenewasclonedintotheexpressionvectorpET-28toyieldtherecombinantexpressionplasmidpET-P450nor,whichcoulddirectthesynthesisofaeukaryoticderivedproteininEscherichiacoliBL21.Thevectorallowsoverproductionandsingle-steppurificationof(His)6-taggedcytoehromeP450norbythefacifitationofmetal(Ni^2+)chelateafl]nitychromatography.TheexpressionlevelofcytoehromeP450norwashighat30℃afterIPTGinduction.SDSPAGEandWesternblotanalysisshowedaspecificband(about43kDa).TheoverproducedcytochromeP450norwaspurifiedtoeleetrophoretichomogeneitywithin2.5handabout20.8mgpurifiedproteinwasobtainedfrom2Lcellculture.TheproliferationofSSMC-7721celllinecouldbeinhibitedbycytoehromeP450nor.Rabbitpolyclonalantibodies(titerover64000)wereproducedagainstrecombinantcytoehromeP450norandprovedtobeveryusefulforimmunoblottingstudy.AvailabilityofthisexpressionsystemandspecificantibodiesshouldfacilitatecharacterizationoftheroleofcytochromeP450norinthemetabolismofNO.

简介：

简介：Objective:Toexploretheeffectsofhyperbaricoxygen(HBO)treatmentontheneuronalapoptosisatanearlierstageandtheexpressionsofCytochromeC(CytC),Bcl-2(B-celllymphoma-2family)andBax(Bcl-2associatedXprotein)inratbraintissuesaftertraumaticbraininjury(TBI).Methods:Fortyadultratsweredividedintotwogroups,i.e.,GroupA(theratswithuntreatedTBI)andGroupB(ratswithHBOtreatmentafterTBI).Sectionsofbraintissuesofthesetwogroupswerethendetectedat3,6,12,24,72hoursafterTBIbyimmunohistochemistryandelectronmicroscope,respectively.Results:HBOtreatmentcouldup-regulatetheexpressionofBcl-2within72hours,reducethereleaseofCytCfrommitochondria,attenuatetheformationofdimericBaxandalleviatethemitochondrialedemawithin24hoursafterTBI.Conclusions:HBOtreatmentcanalleviateneuronalapoptosisafterTBIbyreducingthereleaseofCytCandthedimersofBaxandup-regulatingtheexpressionofBcl-2.

简介：

简介：Monoclonalantibody(MAb)toratlivercyto-chromeP-450jisozyme,anactivatingenzymespecifictonitrosaminemetabolism,wasusedcoupledwithimmunoblotting,densitometerscanningofSDS-PAGEgelsandimmunohistochemicaltechnique.ThetraceP-450HSjisozyme(Mr.51.5Kd)wasfoundinhumangastricmucosa.ItwassimilartoP-450jinmolecularweight,catalyticandimmunochemicalproperties.TheconcentrationsofP-450HSjinmucosaoflessercurvaturewerehigherthanthoseingreatercurvature.Thismightbeoneoftheimportantreasonsthatlessercurvatureisthecommonestareaforgastriccarcinoma.ButtherewaspossiblylessP-450HSjingastricmucosawithcancer.Im-munohistochemically,P-450HSjwasdiscoveredinthecytoplasmofsomeglandularepithelialcells,especiallyintheglandswithhyperplasticandintestinalmetaplasticchangesadjacenttocarcinoma.Itwasalsofoundinsomenormalglandsandintumorcellsofhigh-differentiatedadenocarcinoma,butnotinthoseoflow-differentia

简介：Quartzcrystalmicrobalance(QCM)andcyclicvoltammetry(CV)wereusedtocharacterizethemonolayerofcytochromec(Cytc),whichwasadsorbedongoldfilmmodifiedwithalkanethiolmixedmonolayer.AdirectcomparisonofproteinsurfacecoveragescalculatedfromQCMandcyclicvoltammetricmeasurementsillustratesthattheratiooftheelectroactiveCytctothetotalsurface-confinedCytcis34%,whichsuggeststhattheorientationisamainfactoraffectingtheelectroactivityofCytc.Moreover,surfaceplasmonresonance(SPR)measurementcombinedwithCV'insitu'wasusedtoinvestigatetheconformationalchangeofCytcintheredoxprocess.Besides,Aunanoparticles(AuNPs)wereadsorbedonthesurfaceofCytc.TheresultindicatesthatAuNPspromoteelectrontransferbetweenCytcandthegoldelectrode,andSPRresultsuggestsAuNPsenhanceSPRsignal.

简介：细胞色素P450基因的新奇完整的长度被孤立在杀虫药剂抵抗(命名CYP6CX1v1)并且易受影响(命名CYP6CX1v2)Bemisiatabaci，作为B遗传因子型被识别，福建，中国(Sj)。CYP6CX1(1940bp包含了1557bp开的读框架)对CYP6成员普通的包括的保存领域在carboxyl附近的helix-K，氧绑定主题AGLDPV和保存顺序PEKFNP的通常认为的曲流绑定顺序ETLR和PERF例如heme有约束力的主题PFGEGPRFCIA，结束。有在R和SB之间的氨基酸残余的四不同代替。tabaci(Thr300翼，Thr354Pro，Arg486His和Ile503Thr)，在哪个之中替换Ile503Thr位于底层识别地点区域。CYP6CX1v1的mRNA抄写水平象CYP6CX1v2的一样高是2.38褶层。结果显示了从B遗传因子型B的CYP6CX1。在Sj的tabaci是CYP6成员之一，并且提高了CYP6CX1表示和氨基酸残余的代用品可能在域B涉及抵抗机制。tabaci。

简介：Anewdinudeatingligandconsistingofatetraphanylporphyrinderivativecovalentlylinkedwithtris(2-benzimidazylmethyl)-amineanditshomodinudearCo-CoandheterodinnelearCo-Cucomplexesweresynthesizedandspectroscopicallycharacter-ized.Theheterobimetalliecobalt-coppercomplexbearingthreebenzimidazoleligandsforcopper,ascytochromecoxidaseac-tivesitemodel,wasappliedtothesurfaceofglassycarbonelec-trodetoshowelectrocatalytieactivityforO2reductioninaque-oussolutionatanaddityleveldosetophysiologicalpHvalue.Thekineticparametersofthiselectrocatalyticprocesswereob-tained.