pSpeedET 载体 (V010574)

我们所展示的质粒图谱主要是从文献和开放数据库中收集而来,主要是为了方便研究工作,其中一小部分质粒进行了质量控制,可供科学家使用。

所有的产品都严格仅供科学研究使用,不能应用于临床试验,包括人体摄入、注射或外用的药理学用途。

确保质粒的关键元件正确,但是我们并不能保证实验结果。页面展示的图谱序列为理论序列,可能与测序结果不一致,请自行比对后确定是否满足要求。(如果测过序,本页面一般会提供下载)

开放数据库中的大多数载体序列都没有被完全测序。如果实际序列与参考序列的相似度超过99%,则将其视为正确。

由于科学研究是在探索未知,具有很大的不确定性,在任何情况下,我们都不承担超出质粒本身的额外经济损失或责任。

载体名称:
pSpeedET
载体抗性:
Chloramphenicol
载体长度:
5464 bp
载体类型:
Structural Genomics Vectors
复制子:
ori
载体来源:
Klock HE, Koesema EJ, Knuth MW, Lesley SA.
拷贝数:
High copy number
启动子:
araBAD

pSpeedET 载体图谱

pSpeedET5464 bp60012001800240030003600420048005400araBAD promoterT7 promoterRBSATG6xHisTEV sitelac UV5 promoterCmRccdBrrnB T1 terminatorrrnB T2 terminatorAmpR promoterKanRoribomaraC

质粒操作方法

1. 发货形式:质粒干粉(常温运输,存于-20度,请务必先转化提质粒后使用)

2. 收到质粒干粉后请先5000rpm离心1min,再加入20μl ddH2O溶解质粒;(质粒复测的浓度有时候与标称值差距较大,这可能是因为冻干质粒在管中的位置、复溶效率、测量偏差以及管壁的吸附导致,因此建议先转化提质粒后再使用)

3. 取1支100μl 感受态于冰上解冻10min,加入2μl质粒,再冰浴30min后,42℃热激60s,不要搅动,再冰浴2min;

4. 加入900μl无抗的LB液体培养基,180rpm震荡37℃培养45min (30℃培养1-1.5小时);

5. 6000rpm离心5min,仅留100μl上清液重悬细菌沉淀,并涂布至目标质粒抗性的LB平板上;

6. 将平板倒置37℃培养14h,如果要求是30℃则培养20h; (菌落过多则将质粒稀释后再转化;没有菌落则加入10μl质粒转化;建议不要直接转表达感受态, 要先转克隆感受态,重提质粒后再导入表达感受态);

7. 挑取单菌落至LB液体培养基中,加入对应抗生素,220rpm震荡培养14h,根据实验需要和质粒提取试剂盒说明书提取质粒。

pSpeedET 载体序列

LOCUS       pSpeedET.        5464 bp DNA     circular SYN 01-JAN-1980
DEFINITION  Vector with a lethal ccdB gene, for polymerase incomplete primer 
            extension (PIPE) cloning to express proteins with a cleavable 6xHis 
            tag.
ACCESSION   .
VERSION     .
KEYWORDS    pSpeedET
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 5464)
  AUTHORS   Klock HE, Koesema EJ, Knuth MW, Lesley SA.
  TITLE     Combining the polymerase incomplete primer extension method for 
            cloning and mutagenesis with microscreening to accelerate structural
            genomics efforts.
  JOURNAL   Proteins 2008;71:982-94.
  PUBMED    18004753
REFERENCE   2  (bases 1 to 5464)
  AUTHORS   Joint Center for Structural Genomics (JCSG)
  TITLE     Direct Submission
REFERENCE   3  (bases 1 to 5464)
  AUTHORS   .
  TITLE     Direct Submission
COMMENT     SGRef: number: 1; type: "Journal Article"; journalName: "Proteins"; 
            date: "2008"; volume: "71"; pages: "982-94"
COMMENT     SGRef: number: 2; type: "Journal Article"
FEATURES             Location/Qualifiers
     source          1..5464
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     promoter        1..285
                     /label=araBAD promoter
                     /note="promoter of the L-arabinose operon of E. coli; the
                     araC regulatory gene is transcribed in the opposite 
                     direction (Guzman et al., 1995)"
     promoter        291..309
                     /label=T7 promoter
                     /note="promoter for bacteriophage T7 RNA polymerase"
     RBS             312..334
                     /label=RBS
                     /note="efficient ribosome binding site from bacteriophage
                     T7 gene 10 (Olins and Rangwala, 1989)"
     CDS             346..348
                     /codon_start=1
                     /product="start codon"
                     /label=start codon
                     /note="ATG"
                     /translation="M"
     CDS             364..381
                     /label=6xHis
                     /note="6xHis affinity tag"
     CDS             382..402
                     /label=TEV site
                     /note="tobacco etch virus (TEV) protease recognition and 
                     cleavage site"
     promoter        418..448
                     /label=lac UV5 promoter
                     /note="E. coli lac promoter with an 'up' mutation"
     CDS             502..1158
                     /label=CmR
                     /note="chloramphenicol acetyltransferase"
     CDS             1503..1805
                     /label=ccdB
                     /note="CcdB, a bacterial toxin that poisons DNA gyrase"
     terminator      2079..2165
                     /label=rrnB T1 terminator
                     /note="transcription terminator T1 from the E. coli rrnB
                     gene"
     terminator      2257..2284
                     /label=rrnB T2 terminator
                     /note="transcription terminator T2 from the E. coli rrnB
                     gene"
     promoter        2304..2395
                     /label=AmpR promoter
     CDS             2396..3208
                     /label=KanR
                     /note="aminoglycoside phosphotransferase"
     rep_origin      3382..3970
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     misc_feature    complement(4156..4296)
                     /label=bom
                     /note="basis of mobility region from pBR322"
     CDS             complement(4563..5438)
                     /label=araC
                     /note="L-arabinose regulatory protein"