ʱ : 分子生物学技术实验指?009?- 百度文库ϿʼĶ
ѧʵָ
2009919
1
ʵһ DNAƱ
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plasmidһȾɫȶŴӣϸϸУС1200kb֮䣬Ϊ˫ջ״DNAӡƺת¼Ӵϸбֺ㶨ĿЯŴϢ临ƺת¼ҪϸһЩø͵ʣ뿪ϸͲܴûʱǿġɶϸڣҲϵϸȾɫУƵѧͨǶϸIJ䡣ˣΪһּԵӡ
ϸڵĸһΪͣܿͣstringent controlɳۿͣrelaxed controlǰֻϸڵһνиƣˣȾɫ岻ʱҲƣϸʱԸƣͨǰϸֻ1ӣϸһ20ϣǧ
ڻУͨʹõȻĻΪӦʵҲ˹Ϊ壬һѡԱǻ翹ؿԻһ˹ϳɵĺɸԺøʶλ㣨¡λ㣩ȥȻеĴУһ㲻תĻ˲ɴһϸһϸתơõPUC18/19PBR322PGEM32PKK2232ȣСһΪ25kbС˱ڲ
봿DNAҪȾɫ֮IJеģȾɫDNADNAö࣬ȾɫDNAȡдѳ״Ӷ
DNAΪ۱պϻ״ṹ 봿
DNẠ
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2ռѽϸȥʺȾɫDNA 3봿DNA Ŀǰ ѽⷨ
ϸǵҺУEDTAƻϸϸںϸĤ
DNAƱ֣1ѽⷨ2з3ȥۼѽⷨ
2
ȥۼʮƣSDSTriton x-100ʹϸ⣬ʹѡƻԣʹϸ״ȾɫDNADNAԣغDNAѸٸΪDNAСRNAҲʿ״̬ԵȾɫDNA߷RNAԼK+/SDS/ϸĤƸϸƬϣԡ׳ȥDNAϸеĿԵʡǺ˵tRNAСͨ뵰ˮøͺǺøԷֽ֮ͨԷӣpH8.0-ȷ-촼(25:24:1)ȷ-촼лܼȥʡȻ﮳RNAͲдĵʡҴлܼDNAôDNA []
1̨ʽĻ 2
3ҡ䣩 4ʽѹ 5 6Һ
71.5ml Eppendorf 8100mlƿ 9ˮԡ [Լ]
1 LB( LuriaBertani): 950mlȥˮмȵ10ˡĸȡҺ5ˡ
NaCl 10ˣҡܽ⣬5N NaOHԼ1.6 mlpH7.5ȥˮ1000ml15/Ӣ2ѹ20ӣLBܷѹ
2 ùأAmpicillin , AmpĸҺ10 mg/mlˮҺ,-20棬á 3 LB-AMPҺ: 100 ml LBм백ùأ10 mg/mlĸҺ0.5
ml
4 LBLBм1.4%ۣ֬ѹƱLB 5 LB-AMPù50ug/ml100 ml LBм1.4g֬
ۣѹȴ55,백ùأ10 mg/mlĸҺ0.5 ml ,ƱLB-AMP
6 1 mol/L Tri-HCl Buffer 800 mlˮмTris 121.1 g ŨHCl( pH 8.0ʱ42mlpH 7.6
3
ʱ60mlpH 7.0ʱ70 ml)ˮ1L
7 1 mol/L EDTA: 800 mlˮм EDTA-Na2-2H2O 372.2 g NaOH Լ20g pH
8.0 ˮ1Lѹ
8 GTEҺ[50mmol/Lǣ25mmol/LTrisCl(PH8.0),10mmol/L EDTA]ѹ
15ӣ4䱸áע⣺GTEҺɷ
9 TEҺ[ 10 mmol/L TrisCl (PH8.0), l mmol/L EDTA ]ÿ100ml ˮӣ.
ml 1 mol/L TrisCl(pH8.0), 200 l 0.5mol/L EDTA(pH8.0) 10
3mol/LҺ29.5mlKOHpH4.8˫ˮ
100mlظѹ档 11 12 13 14 15 16
ˮҴ70%Ҵ 10% SDS
Trisͷ ȷ
NaOHSDSҺ10mol/L NaOH 20 l, ˫ˮ880l 10% SDS 100l ,
ơ 17 [ʵ鲽]
1PUC-temľֽLB-AMPϣ37ҹ 2ȡֵ5ml LB-AMPҺУ37ҹڱá 3ȡ1.5mlڵľEppendorfУ̨ʽĻ8000rpm30ռ塣
4壬EppendorfܵˮֽϣҺ
5100l GTEҺҺᴵʹ·5ӡ 6200lƵNaOHSDSҺߵ10ΣȻñԡ5ӡ 7150lԤҺֻȣñԡ5ӡ
8 4̨ʽĻ12000 rpm5ӣһ֧Eppendorf С
92g/l RnaseҺ 2 l37 30 min
10ӵӡȷ³һΣ12000 rpm5ӣȡϲˮһ֧
4
2g/l RnaseTE Bufferϡ͡