Advanced Search
Last updated date: Mar 30, 2024 Views: 4447
Gibson Cloning
1 试剂的准备
货号:NEB的#M0530S 2000U/ml Phusion® Hot Start Flex DNA Polymerase
Function:High Fidelity DNA Polymerases are important for applications in which the DNA sequence needs to be correct after amplification. Phusion High-Fidelity DNA Polymerase offers both high fidelity and robust performance, and thus can be used for all PCR applications. Its unique structure, a novel Pyrococcus-like enzyme fused with a processivity-enhancing domain, increases fidelity and speed. Phusion DNA Polymerase is an ideal choice for cloning and can be used for long or difficult amplicons. With an error rate 50-fold lower than that of Taq DNA Polymerase and 6-fold lower than that of Pyrococcus furiosus DNA Polymerase , Phusion is one of the most accurate thermostable polymerases available. Phusion DNA Polymerase possesses 5´→ 3´ polymerase activity, 3´→ 5´ exonuclease activity and will generate blunt-ended products.
作用:高保真DNA聚合酶在DNA序列扩增后的正确匹配性是重要的。该款DNA聚合酶提供高保真度和执行的随意性,因此可用于所有PCR扩增。根据其独特的蛋白结构,一种新型的似球菌的酶与强化过程的结构域组成,提高保真度和速度。DNA聚合酶是一个理想的克隆选择,可用于长片段或困难片段的扩增。Phusion是最精确的热稳定性聚合酶之一,其错误率比Taq DNA聚合酶低50倍,比糠秕焦球菌DNA聚合酶低6倍。DNA聚合酶具有5’到3’聚合酶活性,3’到5’外切核酸酶活性,能够产生平末端产物。
货号:NEB的#M0363S 10000U/ml
Function:T5 Exonuclease degrades DNA in the 5´ to 3´ direction . T5 Exonuclease is able to initiate nucleotide removal from the 5´ termini or at gaps and nicks of linear or circular dsDNA . However, the enzyme does not degrade supercoiled ds DNA . T5 Exonuclease also has ssDNA endonuclease activity.
作用:T5核酸外切酶从5’至3’降解DNA。T5核酸外切酶能够从5’末端或在线性与环状双链DNA的间隙和缺口中开始去除核苷酸。然而,该酶不降解超螺旋的双链DNA。T5核酸外切酶也具有单链线性DNA核酸内切酶活性。
1.3 Taq DNA Ligase
货号:NEB的#M0208L 4000U/ml
Function:Taq DNA Ligase is a thermostable ligase that catalyzes the formation of a phosphodiester bond between the 5´-phosphate and the 3´-hydroxyl of two adjacent DNA strands. The strands to be ligated need to be hybridized and accurately paired, with no gap, to a complementary DNA strand; allowing resolution of single nucleotide variants. Taq DNA Ligase uses NAD as a cofactor and it is active at elevated temperatures (37° C – 75° C).
作用:Taq DNA Ligase是一种热稳定性连接酶,催化两个相邻DNA链的5-磷酸和3-羟基之间形成磷酸二酯键。要连接的链需要杂交,并且精确配对,没有间隙,与互补的DNA链;允许单核苷酸变异体的解析。Taq DNA连接酶使用NAD作为辅因子,它在升高的温度(37°C~75°C)下是活跃的。
β-Nicotinamide adenine dinucleotide hydrate
(二磷酸吡啶核苷酸, 辅酶 1, 辅酶 A, 辅酶)
货号:Sigma的V900401-5G
Catalog #: V900401 经验分子式(希尔表示法) C21H27N7O14P2 · xH2O 分子量 663.43 (anhydrous basis)
Function: Taq DNA Ligase uses NAD as a cofactor and it is active at elevated temperatures (37° C – 75° C).
作用: Taq DNA连接酶使用NAD作为辅因子,它在升高的温度(37°C~75°C)下是活跃的。
1.5 PEG 8000
Poly(ethylene glycol)
中文名:聚乙二醇
货号:vetec的V900156-500G
Catalog #: V900156线性分子式 H(OCH2CH2)nOH
Trizma® 碱
中文名: 2-氨基-2-(羟甲基)-1,3-丙二醇, THAM, Tris 碱, 三羟甲基氨基甲烷, 氨基丁三醇
货号:Vetec的V900483-500G
Catalog #: V900483线性分子式 NH2C(CH2OH)3 分子量 121.14
1.7 Glycerol
中文名: 甘油,丙三醇
货号:国药的10010618
分子式:C2H3O3 分子量 92.09
1.8 EDTA
Ethylenediaminetetraacetic acid
中文名: 乙二胺四乙酸, 亚乙基二次氮基四乙酸, 依地酸
货号:Vetec的V900106
Catalog #: V900106线性分子式 (HO2CCH2)2NCH2CH2N(CH2CO2H)2 分子量 292.24
1.9 NaCl
Sodium chloride
中文名: 氯化钠
货号:Vetec的V900058
Catalog #: V900058 线性分子式 NaCl 分子量 58.44
1.10 DTT
DL-Dithiothreitol
中文名: 二硫苏糖醇
货号:BIOSHARP的???
Catalog #:??? 分子式为C4H10O2S2,分子量为154.25
1.11 Triton X-100
T-octylphenoxypolyethoxyethanol
中文名: 曲拉通 X-100
货号:生工的A110694-0100
Catalog #: A110694-0100 分子式为C34H62O11,密度 1.06 g/ml(25°C)
1.12 MgCl2·6H2O
Magnesium chloride hexahydrate
中文名: 氯化镁 六水合物
货号:Vetec的V900020
Catalog #: V900020 线性分子式 MgCl2·6H2O 分子量为203.20
1.13 dNTP
dNTP mixture, 10 Mm
中文名: dNTP mixture 溶液(10 mM)
货号:生工的B500056
Catalog #: B500056
10 mM of each dATP, dCTP, dGTP and dTTP.
2 试剂的配置
2.1 1M Tri-Cl pH 7.5
12.114g Tris base 溶于80ml d2H2O,用HCl调节pH到达7.5。补d2H2O定容到到100mL;
0.03317g NAD(4℃保存), 补d2H2O到1 ml,配置好后-20℃保存;
2.3 5×APB (5×Assembly Pre-Buffer)
所需母液体积 | 使用浓度 | |
1M Tri-Cl pH 7.5 | 0.5ml | 0.5M Tri-Cl pH 7.5 |
each dNTP 10mM | 100ml | 1mM each |
50mM NAD | 100μl | 50mM NAD |
PEG8000 | 250mg | 25% (m/v) |
To 1ml | To 1ml |
2.4 1M MgCl2
20.32g MgCl2·6H2O,补d2H2O定容到到100mL;
2.5 1M NaCl
5.844g NaCl,补d2H2O定容到到100mL;
2.6 1M DTT
1.5425g DTT,补d2H2O定容到到10mL;使用前将沉淀混匀;
14.612 g EDTA,溶于100ml d2H2O,用NaOH调节pH到达8。补d2H2O定容到到100mL;
2.8 T5 Exonuclease Dilution Buffer
母液浓度 | 所需母液体积/μl | 使用浓度 |
100% glycerol | 500 | 50% glycerol |
1M Tri-Cl pH 7.5 | 50 | 50mM Tri-Cl pH 7.5 |
0.5M EDTA | 0.2 | 0.1mM EDTA |
1M DTT | 1 | 1mM DTT |
1M NaCl | 100 | 0.1M NaCl |
Triton X-100 | 10 | 0.1% Triton X-100 (v/v) |
d2H2O | To 1ml | To 1ml |
配置好后-20℃保存;
2.9 T5(1U/μl)
10μl的T5 Exonuclease溶于90μl T5 Exonuclease Dilution Buffer ,配置好后-20℃保存;
母液浓度 | 所需母液体积/μl |
5×APB | 26.67 |
1M DTT | 1.33 |
1M MgCl2 | 1.33 |
Phusion | 1.67 |
T5(1U/μl) | 0.6 |
Taq DNA Ligase | 13.33 |
d2H2O | 55.07μl (To 100μl) |
配置好后分装成1.6μl/管,-20℃保存;其中一次反应只需要1.5μl。
3 Gibson 反应
母液 | 所需母液体积/μl |
片段 (A ng/μl) | x |
切好的载体(B ng/μl) | Y |
Gibson buffer | 1.5 |
总体积 | 2.8 |
X+Y=1.3
(A* X)/2= (B* Y)/10
3.2 Gibson 反应程序
50℃,反应45min,反应结束后,直接加入感受态中,或者-20℃保存;
申明
此Gibson buffer配置方式可与各种试剂官网说明书,一起看。文中方法不一定适合所有的克隆,因此仅供参考。
如果有错误,请发送到邮箱1329532528@qq.com ,谢谢!
Do you have any questions about this protocol?
Post your question to gather feedback from the community. We will also invite the authors of this article to respond.
Tips for asking effective questions
+ Description
Write a detailed description. Include all information that will help others answer your question including experimental processes, conditions, and relevant images.
Share
Bluesky
X
Copy link