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:
- pSpCas9n(BB) (PX460)
- 载体抗性:
- Ampicillin
- 载体长度:
- 8505 bp
- 载体类型:
- Mammalian Expression, CRISPR
- 复制子:
- ori
- 启动子:
- CBh
- 克隆方法:
- Restriction Enzyme
- 5'引物:
- TTTATGGCGAGGCGGCGG
pSpCas9n(BB) (PX460) 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。
pSpCas9n(BB) (PX460) 载体序列
LOCUS 40924_41081 8505 bp DNA circular SYN 13-MAY-2021
DEFINITION Cas9n (D10A nickase mutant) from S. pyogenes.
ACCESSION .
VERSION .
KEYWORDS .
SOURCE synthetic DNA construct
ORGANISM synthetic DNA construct
REFERENCE 1 (bases 1 to 8505)
AUTHORS Ran FA, Hsu PD, Wright J, Agarwala V, Scott DA, Zhang F
TITLE Genome engineering using the CRISPR-Cas9 system.
JOURNAL Nat Protoc. 2013 Nov;8(11):2281-308. doi: 10.1038/nprot.2013.143.
Epub 2013 Oct 24.
PUBMED 24157548
REFERENCE 2 (bases 1 to 8505)
TITLE Direct Submission
REFERENCE 3 (bases 1 to 8505)
AUTHORS .
TITLE Direct Submission
COMMENT SGRef: number: 1; type: "Journal Article"; doi:
"10.1038/nprot.2013.143"; journalName: "Nat Protoc"; date:
"2013-11"; volume: "8"; issue: "11"; pages: "2281-308"
COMMENT SGRef: number: 2; type: "Journal Article"
FEATURES Location/Qualifiers
source 1..8505
/mol_type="other DNA"
/organism="synthetic DNA construct"
promoter 1..241
/label=U6 promoter
/note="RNA polymerase III promoter for human U6 snRNA"
misc_RNA 268..343
/label=gRNA scaffold
/note="guide RNA scaffold for the Streptococcus pyogenes
CRISPR/Cas9 system"
enhancer 440..725
/label=CMV enhancer
/note="human cytomegalovirus immediate early enhancer;
contains an 18-bp deletion relative to the standard CMV
enhancer"
promoter 727..1004
/label=chicken beta-actin promoter
intron 1005..1232
/label=hybrid intron
/note="hybrid between chicken beta-actin (CBA) and minute
virus of mice (MMV) introns (Gray et al., 2011)"
regulatory 1244..1253
/label=Kozak sequence
/note="vertebrate consensus sequence for strong initiation
of translation (Kozak, 1987)"
/regulatory_class="other"
CDS 1253..1318
/codon_start=1
/product="three tandem FLAG(R) epitope tags, followed by an
enterokinase cleavage site"
/label=3xFLAG
/translation="DYKDHDGDYKDHDIDYKDDDDK"
CDS 1325..1345
/codon_start=1
/product="nuclear localization signal of SV40 (simian virus
40) large T antigen"
/label=SV40 NLS
/translation="PKKKRKV"
CDS 1370..5470
/codon_start=1
/label=Cas9(D10A)
/note="nickase mutant of the Cas9 endonuclease from the
Streptococcus pyogenes Type II CRISPR/Cas system"
/translation="DKKYSIGLAIGTNSVGWAVITDEYKVPSKKFKVLGNTDRHSIKKN
LIGALLFDSGETAEATRLKRTARRRYTRRKNRICYLQEIFSNEMAKVDDSFFHRLEESF
LVEEDKKHERHPIFGNIVDEVAYHEKYPTIYHLRKKLVDSTDKADLRLIYLALAHMIKF
RGHFLIEGDLNPDNSDVDKLFIQLVQTYNQLFEENPINASGVDAKAILSARLSKSRRLE
NLIAQLPGEKKNGLFGNLIALSLGLTPNFKSNFDLAEDAKLQLSKDTYDDDLDNLLAQI
GDQYADLFLAAKNLSDAILLSDILRVNTEITKAPLSASMIKRYDEHHQDLTLLKALVRQ
QLPEKYKEIFFDQSKNGYAGYIDGGASQEEFYKFIKPILEKMDGTEELLVKLNREDLLR
KQRTFDNGSIPHQIHLGELHAILRRQEDFYPFLKDNREKIEKILTFRIPYYVGPLARGN
SRFAWMTRKSEETITPWNFEEVVDKGASAQSFIERMTNFDKNLPNEKVLPKHSLLYEYF
TVYNELTKVKYVTEGMRKPAFLSGEQKKAIVDLLFKTNRKVTVKQLKEDYFKKIECFDS
VEISGVEDRFNASLGTYHDLLKIIKDKDFLDNEENEDILEDIVLTLTLFEDREMIEERL
KTYAHLFDDKVMKQLKRRRYTGWGRLSRKLINGIRDKQSGKTILDFLKSDGFANRNFMQ
LIHDDSLTFKEDIQKAQVSGQGDSLHEHIANLAGSPAIKKGILQTVKVVDELVKVMGRH
KPENIVIEMARENQTTQKGQKNSRERMKRIEEGIKELGSQILKEHPVENTQLQNEKLYL
YYLQNGRDMYVDQELDINRLSDYDVDHIVPQSFLKDDSIDNKVLTRSDKNRGKSDNVPS
EEVVKKMKNYWRQLLNAKLITQRKFDNLTKAERGGLSELDKAGFIKRQLVETRQITKHV
AQILDSRMNTKYDENDKLIREVKVITLKSKLVSDFRKDFQFYKVREINNYHHAHDAYLN
AVVGTALIKKYPKLESEFVYGDYKVYDVRKMIAKSEQEIGKATAKYFFYSNIMNFFKTE
ITLANGEIRKRPLIETNGETGEIVWDKGRDFATVRKVLSMPQVNIVKKTEVQTGGFSKE
SILPKRNSDKLIARKKDWDPKKYGGFDSPTVAYSVLVVAKVEKGKSKKLKSVKELLGIT
IMERSSFEKNPIDFLEAKGYKEVKKDLIIKLPKYSLFELENGRKRMLASAGELQKGNEL
ALPSKYVNFLYLASHYEKLKGSPEDNEQKQLFVEQHKHYLDEIIEQISEFSKRVILADA
NLDKVLSAYNKHRDKPIREQAENIIHLFTLTNLGAPAAFKYFDTTIDRKRYTSTKEVLD
ATLIHQSITGLYETRIDLSQLGGD"
CDS 5471..5518
/codon_start=1
/product="bipartite nuclear localization signal from
nucleoplasmin"
/label=nucleoplasmin NLS
/translation="KRPAATKKAGQAKKKK"
polyA_signal 5552..5759
/label=bGH poly(A) signal
/note="bovine growth hormone polyadenylation signal"
repeat_region 5768..5908
/label=AAV2 ITR
/note="inverted terminal repeat of adeno-associated virus
serotype 2"
rep_origin 5983..6438
/label=f1 ori
/note="f1 bacteriophage origin of replication; arrow
indicates direction of (+) strand synthesis"
primer_bind complement(6455..6474)
/label=pRS-marker
/note="pRS vectors, use to sequence yeast selectable
marker"
primer_bind 6574..6596
/label=pGEX 3'
/note="pGEX vectors, reverse primer"
primer_bind complement(6634..6652)
/label=pBRforEco
/note="pBR322 vectors, upsteam of EcoRI site, forward
primer"
promoter 6720..6824
/label=AmpR promoter
CDS 6825..7682
/codon_start=1
/label=AmpR
/note="beta-lactamase"
/translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGYI
ELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRIDAGQEQLGRRIHYSQNDLVEYS
PVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRLDRW
EPELNEAIPNDERDTTMPVAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPLLRSA
LPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIAEIGAS
LIKHW"
rep_origin 7856..8444
/direction=RIGHT
/label=ori
/note="high-copy-number ColE1/pMB1/pBR322/pUC origin of
replication"