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:
- hCas9
- 载体抗性:
- Ampicillin
- 载体长度:
- 9553 bp
- 载体类型:
- CRISPR Plasmids
- 复制子:
- ori
- 载体来源:
- Mali P, Yang L, Esvelt KM, Aach J, Guell M, DiCarlo JE, Norville JE,
- 筛选标记:
- Neomycin/G418(Geneticin)
- 拷贝数:
- High copy number
- 启动子:
- SV40
hCas9 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。
hCas9 载体序列
LOCUS hCas9. 9553 bp DNA circular SYN 01-JAN-1980
DEFINITION Mammalian vector with a G418 resistance marker for expressing human
codon-optimized Cas9.
ACCESSION .
VERSION .
KEYWORDS hCas9
SOURCE synthetic DNA construct
ORGANISM synthetic DNA construct
REFERENCE 1 (bases 1 to 9553)
AUTHORS Mali P, Yang L, Esvelt KM, Aach J, Guell M, DiCarlo JE, Norville JE,
Church GM.
TITLE RNA-guided human genome engineering via Cas9.
JOURNAL Science 2013;339:823-6.
PUBMED 23287722
REFERENCE 2 (bases 1 to 9553)
AUTHORS Church Lab / Addgene #41815
TITLE Direct Submission
REFERENCE 3 (bases 1 to 9553)
AUTHORS .
TITLE Direct Submission
COMMENT SGRef: number: 1; type: "Journal Article"; journalName: "Science";
date: "2013"; volume: "339"; pages: "823-6"
COMMENT SGRef: number: 2; type: "Journal Article"
COMMENT Minor sequence errors were corrected using the Addgene sequencing
results.
FEATURES Location/Qualifiers
source 1..9553
/mol_type="other DNA"
/organism="synthetic DNA construct"
enhancer 50..429
/label=CMV enhancer
/note="human cytomegalovirus immediate early enhancer"
promoter 430..633
/label=CMV promoter
/note="human cytomegalovirus (CMV) immediate early
promoter"
CDS 748..4851
/label=Cas9
/note="Cas9 (Csn1) endonuclease from the Streptococcus
pyogenes Type II CRISPR/Cas system"
CDS 4864..4884
/codon_start=1
/product="nuclear localization signal of SV40 large T
antigen"
/note="SV40 NLS"
/translation="PKKKRKV"
polyA_signal 4983..5031
/label=HSV TK poly(A) signal
/note="herpes simplex virus thymidine kinase
polyadenylation signal (Cole and Stacy, 1985)"
rep_origin 5233..5661
/label=f1 ori
/note="f1 bacteriophage origin of replication; arrow
indicates direction of (+) strand synthesis"
promoter 5675..6004
/label=SV40 promoter
/note="SV40 enhancer and early promoter"
CDS 6071..6862
/label=NeoR/KanR
/note="aminoglycoside phosphotransferase"
polyA_signal 7041..7174
/label=SV40 poly(A) signal
/note="SV40 polyadenylation signal"
primer_bind complement(7211..7227)
/label=M13 rev
/note="common sequencing primer, one of multiple similar
variants"
protein_bind complement(7235..7251)
/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 complement(7259..7289)
/label=lac promoter
/note="promoter for the E. coli lac operon"
protein_bind complement(7304..7325)
/label=CAP binding site
/note="CAP binding activates transcription in the presence
of cAMP."
rep_origin complement(7613..8201)
/direction=LEFT
/label=ori
/note="high-copy-number ColE1/pMB1/pBR322/pUC origin of
replication"
CDS complement(8375..9232)
/label=AmpR
/note="beta-lactamase"
promoter complement(9233..9337)
/label=AmpR promoter