/html/DNA/sequence/index.html DNA实验 / DNA测序 zh-cn <a href='http://www.5ibio.com' target='_blank'>Power by DedeCms</a> jurgenyan##yahoo.com.cn /html/DNA/sequence/20070730/12200.html 在分子生物学研究中，DNA的序列分析是进一步研究和改造目的基因的基础。目前用于测序的技术主要有Sanger等（1977）发明的双脱氧链末端终止法和Maxam和 Gilbert（1977）发明的化学降解法。这二种方法在原理上差异很大，但都是根据核苷酸在某一固定的点开始，随机在某一个 2007-07-30 DNA测序 秩名 生物实验网 /html/DNA/sequence/20070727/12191.html 甲基化研究对于基因的调控和肿瘤的发生有非常密切的关系。在一般正常的细胞中，基因调控区CpG岛处于非甲基化的状态。而当细胞发生癌变后，这些CG区域往往呈现甲基化状态。英国医学刊物《Lancet》报道奥地利因斯布鲁克医学院的专家们早就可以通过检测大便中DNA的甲基化变 2007-07-27 DNA测序 秩名 生物实验网 /html/DNA/sequence/20070727/12190.html 以下方案指出了以前用于炭疽热细菌鉴定方案的局限性，这些方案有抗体检测的诊断方法， 16S rRNA基因的序列分析， DNA杂交， gamma phage sensitivity tests和carbohydrate profiles等。该方案肯定了利用pyrosequencing鉴定细菌的优势 2007-07-27 DNA测序 秩名 生物实验网 /html/DNA/sequence/20070727/12189.html Pyrosequencing是对短到中等长度的序列样品进行高通量的、精确和重复性好的分析的技术。第一步——测序引物和扩增的、单链的模板杂交，与酶—聚画中画广告开始画中画广告结束合酶（）、硫酸化酶（）、荧光素酶（）、三磷酸腺苷双磷酸酶（）—和底物—、荧光素（）孵育。 2007-07-27 DNA测序 秩名 生物实验网 /html/DNA/sequence/20070727/12188.html Pyrosequencing是新一代DNA序列分析技术，基于该技术的分析系统结合相应软件和试剂可以进行DNA序列分析，SNP分析和SNP频率确定。本文介绍了Pyrosequencing技术的原理和应用。 2007-07-27 DNA测序 黄文晋博士 生物实验网 /html/DNA/sequence/20070114/2670.html SalmonSpermDNA Dissolve1gsalmonspermDNAin100mlH 2 O. Autoclave(20minutes)andaliquotin1ml/tube Storeat-20 o C.(commonfreezerforstocksolutions) 2007-01-14 DNA测序 秩名 生物实验网 /html/DNA/sequence/20070112/2609.html DNASEQUENCING(SANGER) (USBSequenaseVersion2.0) 1.Fordouble-strandedDNAtemplates: a.Denaturetemplate:10mlDNA(5-10goralkalinelysisminiprepDNA) 8mlddH2O 2ml2NNaOH -incubate30'@37oC. b.Dry-iceprecipitate: 2007-01-12 DNA测序 秩名 cmgm.stanford.edu /html/DNA/sequence/20070112/2608.html This protocol gives M13 quality sequence when used with the Quick DNA Plasmid Prep 2007-01-12 DNA测序 秩名 axon.med.harvard.edu /html/DNA/sequence/20070112/2607.html This protocol works well from a 5 ml starting culture or a 1 ml starting culture (adjust volume accordingly). 2007-01-12 DNA测序 秩名 axon.med.harvard.edu /html/DNA/sequence/20070112/2606.html ThefollowingprotocolisbasedonourmodificationsofR.Kraft,J.Tardiff,K.S.Krauter,andL.A.Leinwand. Biotechn .6(6):544-545,1988. Inoculate2-5mlofLbrothcontainingtheappropriateantibioticfromasinglebacterialc 2007-01-12 DNA测序 秩名 omrf.ouhsc.edu /html/DNA/sequence/20070112/2605.html DNAsequencing(dyeterminator) HahnLab，TheFredHutchinsonCancerResearchCenterandHowardHughesMedicalInstitute http://www.fhcrc.org/science/labs/hahn/methods/mol_bio_meth/Big%20Dye%20Protocol.pdf 2007-01-12 DNA测序 秩名 生物实验网 /html/DNA/sequence/20070112/2604.html Clean 1 side each of 2 glass plates (one front plate, one back plate), first with ddH2O, then EtOH, then 3 times with acetone 2007-01-12 DNA测序 秩名 wheat.pw.usda.gov /html/DNA/sequence/20070112/2603.html This is a rapid method for chemical DNA sequencing which is commonly used as ladder for footprinting reactions or for sequencing of short DNA oligonucleotides. 2007-01-12 DNA测序 秩名 www.fhcrc.org /html/DNA/sequence/20061110/1011.html 序列测定的技术和策略 Sanger双脱氧链终止法 Maxam－GilbertDNA化学降解法 测序策略 目前应用的两种快速序列测定技术是Sanger等（1977）提出的酶法及Maxam和Gilbert(1977)提出的化学降解法。虽然其原理大相径庭，但 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/1010.html 在分子生物学研究中，DNA的序列分析是进一步研究和改造目的基因的基础。目前用于测序的技术主要有Sanger等（1977）发明的双脱氧链末端终止法和Maxam和 Gilbert（1977）发明的化学降解法。 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/1009.html Sanger 法测序的原理就是利用一种DNA聚合酶来延伸结合在待定序列模板上的引物。直到掺入一种链终止核苷酸为止。每一次序列测定由一套四个单独的反应构成，每个反应含有所有四种脱氧核苷酸三磷酸(dNTP)， 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/1008.html Run the gel with 0.5X TBE in the top tank and normal 1 X TBE in the bottom tank. Just after the last (or in the case of one load - the only) load has run into the gel, put a half volume of 3 M sodium acetate in the bottom tank (make sure you leave en 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/1007.html MethodsforDNAsequencing A. Bst -catalyzedradiolabeledDNAsequencing Bst DNApolymerase-catalyzedradiolabeledtwo-stepsequencingreactions(26)aremodifiedfromthosepresentedearlier(25)byalteringtheabsolutea 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/1006.html PouringtheGel Outline: Pouringthisbigthin6%acrylamidegel("Motherofallgels")isquiteachallengeandprobablythereasonwhysmartwhimpsbythemreadytouse. SuppliesEquipment: waterbath37°C Erlenmeyerflask250mLw 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/1005.html 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/1003.html PreparationofG+AMarker Author: Long-ChengLi Source: ProtocolOnline Abstract: SimplifiedmethodforpreparingG+Aladderrunalongwithfootprintingreaction.It'smuchsimplethantheoriginalMaxima-Gilbertsequencin 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/1004.html ChemicalSequencingofDNA ThisisarapidmethodforchemicalDNAsequencingwhichiscommonlyusedasladderforfootprintingreactionsorforsequencingofshortDNAoligonucleotides. Reference:Bencinietal.(1984)Biotechniqu 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/1002.html DNASequencing Thesequencingreactionsdescribedbelowworkperfectlywellifyouareshortofcashtobuysequencingkits.ItisbasedontheDideoxysequencingmethodofSangeretal.,1977.However,duetothenumbersolutionsthatne 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/1001.html DNASEQUENCINGREACTIONS DNAprimingreaction xulDNA2ulReactionbuffer,minusDTT1ulprimer(20ng)10ultotalHeat90-100C2min.Coolroomtemp.30min. Enzymemix 4ulradioactivenucleotide(12l)2ulreactionbuffer(6l)4ulwa 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/1000.html 放射性同位素标记的DNA序列测定分析 测定DNA的核苷酸序列是分析基因结构与功能关系的前提。从小片段重叠法到加减法、双脱氧链终止法、化学降解法、自动测序，DNA测序技术发展很快。目前在实验室手工测序常用Sanger双 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/999.html TemplatePreparation Thequalityofsequencingresultsisdirectlyrelatedtothequalityofthetemplate. ABIrecommendsaminialkaline-lysis/PEGprecipitationprocedure(theCorecansupplyinformationonthisprotocol).ABIa 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/998.html InterpretingDNASequencingResults EvaluatingChromatograms Manyproblemswithsequencingresultsarenotrecognizedbyviewingthetextfilealone.Therefore,thequalityofyoursequenceshouldalwaysbeevalutedbystudingth 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/996.html Long Ranger: we started using this in early 1995. Great stuff; the best thing is that the gels are not sticky after drying, even without removal of the urea. Long Ranger Gel Solution is available from many scientific supply companies and is a JT Bake 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/997.html MATERIALS: 2-glassplates 1sharks-toothcombandspacers Whatman3mmpaper 30or40%acrylamide-bis(19:1) 10XTBE urea 10%ammoniumpersulfate TEMED 60cc.syringe Rain-ex Preparationofglassplates: Washandrinsewel 2006-09-26 DNA测序 秩名 生物实验网 /html/DNA/sequence/20061110/995.html 2006-09-26 DNA测序 秩名 生物实验网