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学术研究使用,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。
Note:
- 载体名称:
- pTriEx-4 Neo
- 载体抗性:
- Ampicillin
- 载体长度:
- 6601 bp
- 载体类型:
- Insect Cell Vectors
- 复制子:
- ori
- 载体来源:
- Novagen (EMD Millipore)
- 筛选标记:
- Neomycin/G418(Geneticin)
- 拷贝数:
- High copy number
- 启动子:
- CMV
pTriEx-4 Neo 载体图谱
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。
pTriEx-4 Neo 载体序列
LOCUS pTriEx-4_Neo. 6601 bp DNA circular SYN 01-JAN-1980
DEFINITION Insect, bacterial, and mammalian vector with a CMV promoter and a
neomycin resistance marker, encoding an N-terminal 6xHis-S-Tag and a
C-terminal HSV-8xHis.
ACCESSION .
VERSION .
KEYWORDS pTriEx-4 Neo
SOURCE synthetic DNA construct
ORGANISM synthetic DNA construct
REFERENCE 1 (bases 1 to 6601)
AUTHORS Novagen (EMD Millipore)
TITLE Direct Submission
REFERENCE 2 (bases 1 to 6601)
AUTHORS .
TITLE Direct Submission
COMMENT SGRef: number: 1; type: "Journal Article"
FEATURES Location/Qualifiers
source 1..6601
/mol_type="other DNA"
/organism="synthetic DNA construct"
misc_recomb 181..1008
/label=baculovirus recombination region (lef2/ORF603)
/note="contains ORF603 and part of lef2"
enhancer 1076..1379
/label=CMV enhancer
/note="human cytomegalovirus immediate early enhancer"
promoter 1381..1580
/label=CMV promoter
/note="human cytomegalovirus (CMV) immediate early
promoter"
exon 1597..1698
/note="Exon 1"
intron 1699..1862
promoter 1931..1949
/label=T7 promoter
/note="promoter for bacteriophage T7 RNA polymerase"
protein_bind 1950..1974
/label=lac operator
/note="The lac repressor binds to the lac operator to
inhibit transcription in E. coli. This inhibition can be
relieved by adding lactose or
isopropyl-beta-D-thiogalactopyranoside (IPTG)."
promoter 1990..2099
/label=p10 promoter
/note="baculovirus promoter for expression in insect cells"
RBS 2101..2106
/note="ribosome binding site"
CDS 2114..2116
/codon_start=1
/product="start codon"
/label=start codon
/note="ATG"
/translation="M"
CDS 2120..2137
/label=6xHis
/note="6xHis affinity tag"
CDS 2147..2191
/label=S-Tag
/note="affinity and epitope tag derived from pancreatic
ribonuclease A"
CDS 2207..2224
/label=thrombin site
/note="thrombin recognition and cleavage site"
CDS 2243..2257
/label=enterokinase site
/note="enterokinase recognition and cleavage site"
CDS 2381..2413
/label=HSV tag
/note="HSV (herpes simplex virus) epitope tag"
CDS 2420..2443
/label=8xHis
/note="8xHis affinity tag"
misc_feature 2542..3004
/label=IRES
/note="internal ribosome entry site (IRES) of the
encephalomyocarditis virus (EMCV)"
CDS 3040..3840
/label=NeoR/KanR
/note="aminoglycoside phosphotransferase from Tn5"
polyA_signal 3961..4016
/label=beta-globin poly(A) signal
/note="rabbit beta-globin polyadenylation signal (Gil and
Proudfoot, 1987)"
terminator 4104..4151
/label=T7 terminator
/note="transcription terminator for bacteriophage T7 RNA
polymerase"
misc_recomb 4164..4869
/label=baculovirus recombination region (ORF1629)
/note="contains part of ORF1629"
protein_bind complement(4878..4911)
/label=loxP
/note="Cre-mediated recombination occurs in the 8-bp core
sequence (ATGTATGC) (Shaw et al., 2021)."
rep_origin complement(5079..5666)
/direction=LEFT
/label=ori
/note="high-copy-number ColE1/pMB1/pBR322/pUC origin of
replication"
CDS complement(5682..6539)
/label=AmpR
/note="beta-lactamase"