LOCUS       Exported                8506 bp ds-DNA    circular SYN 03-2-2016
DEFINITION  Zhang lab vector for expressing a single guide RNA (sgRNA) together 
            with an S. pyogenes Cas9 variant with improved targeting 
            specificity.
ACCESSION   .
VERSION     .
KEYWORDS    eSpCas9(1.1)
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 8506)
  AUTHORS   Slaymaker IM, Gao L, Zetsche B, Scott DA, Yan WX, Zhang F.
  TITLE     Rationally engineered Cas9 nucleases with improved specificity.
  JOURNAL   Science 2016;351:84-8.
  PUBMED    26628643
REFERENCE   2  (bases 1 to 8506)
  AUTHORS   Zhang Lab / Addgene #71814
  TITLE     Direct Submission
COMMENT     An error in codon 848 was corrected based on sequencing results from
            Addgene.
FEATURES             Location/Qualifiers
     source          1..8506
                     /organism="synthetic DNA construct"
                     /lab_host="Mammalian Cells"
                     /mol_type="other DNA"
     promoter        1..241
                     /note="U6 promoter"
                     /note="RNA polymerase III promoter for human U6 snRNA"
     misc_RNA        268..343
                     /note="gRNA scaffold"
                     /note="guide RNA scaffold for the Streptococcus pyogenes 
                     CRISPR/Cas9 system"
     terminator      344..349
                     /note="polIII terminator"
                     /note="RNA polymerase III transcription terminator"
     enhancer        440..725
                     /note="CMV enhancer"
                     /note="human cytomegalovirus immediate early enhancer; 
                     contains an 18-bp deletion relative to the standard CMV 
                     enhancer"
     promoter        727..1004
                     /note="chicken beta-actin promoter"
     intron          1005..1233
                     /note="hybrid intron"
                     /note="hybrid between chicken beta-actin (CBA) and minute 
                     virus of mice (MMV) introns (Gray et al., 2011)"
     CDS             1251..1253
                     /codon_start=1
                     /product="start codon"
                     /note="ATG"
                     /translation="M"
     CDS             1254..1319
                     /codon_start=1
                     /product="three tandem FLAG(R) epitope tags, followed by an
                     enterokinase cleavage site"
                     /note="3xFLAG"
                     /translation="DYKDHDGDYKDHDIDYKDDDDK"
     CDS             1326..1346
                     /codon_start=1
                     /locus_tag="
                     "
                     /product="nuclear localization signal of SV40 large T 
                     antigen"
                     /note="SV40 NLS"
                     /note="
                     "
                     /protein_id="
                     "
                     /translation="PKKKRKV"
     CDS             1371..5471
                     /codon_start=1
                     /product="Cas9 endonuclease from the Streptococcus pyogenes
                     Type II CRISPR/Cas system, mutated to improve targeting 
                     specificity (Slaymaker et al., 2016)"
                     /note="eSpCas9(1.1)"
                     /note="carries the mutations K848A, K1003A, and R1060A"
                     /translation="DKKYSIGLDIGTNSVGWAVITDEYKVPSKKFKVLGNTDRHSIKKN
                     LIGALLFDSGETAEATRLKRTARRRYTRRKNRICYLQEIFSNEMAKVDDSFFHRLEESF
                     LVEEDKKHERHPIFGNIVDEVAYHEKYPTIYHLRKKLVDSTDKADLRLIYLALAHMIKF
                     RGHFLIEGDLNPDNSDVDKLFIQLVQTYNQLFEENPINASGVDAKAILSARLSKSRRLE
                     NLIAQLPGEKKNGLFGNLIALSLGLTPNFKSNFDLAEDAKLQLSKDTYDDDLDNLLAQI
                     GDQYADLFLAAKNLSDAILLSDILRVNTEITKAPLSASMIKRYDEHHQDLTLLKALVRQ
                     QLPEKYKEIFFDQSKNGYAGYIDGGASQEEFYKFIKPILEKMDGTEELLVKLNREDLLR
                     KQRTFDNGSIPHQIHLGELHAILRRQEDFYPFLKDNREKIEKILTFRIPYYVGPLARGN
                     SRFAWMTRKSEETITPWNFEEVVDKGASAQSFIERMTNFDKNLPNEKVLPKHSLLYEYF
                     TVYNELTKVKYVTEGMRKPAFLSGEQKKAIVDLLFKTNRKVTVKQLKEDYFKKIECFDS
                     VEISGVEDRFNASLGTYHDLLKIIKDKDFLDNEENEDILEDIVLTLTLFEDREMIEERL
                     KTYAHLFDDKVMKQLKRRRYTGWGRLSRKLINGIRDKQSGKTILDFLKSDGFANRNFMQ
                     LIHDDSLTFKEDIQKAQVSGQGDSLHEHIANLAGSPAIKKGILQTVKVVDELVKVMGRH
                     KPENIVIEMARENQTTQKGQKNSRERMKRIEEGIKELGSQILKEHPVENTQLQNEKLYL
                     YYLQNGRDMYVDQELDINRLSDYDVDHIVPQSFLADDSIDNKVLTRSDKNRGKSDNVPS
                     EEVVKKMKNYWRQLLNAKLITQRKFDNLTKAERGGLSELDKAGFIKRQLVETRQITKHV
                     AQILDSRMNTKYDENDKLIREVKVITLKSKLVSDFRKDFQFYKVREINNYHHAHDAYLN
                     AVVGTALIKKYPALESEFVYGDYKVYDVRKMIAKSEQEIGKATAKYFFYSNIMNFFKTE
                     ITLANGEIRKAPLIETNGETGEIVWDKGRDFATVRKVLSMPQVNIVKKTEVQTGGFSKE
                     SILPKRNSDKLIARKKDWDPKKYGGFDSPTVAYSVLVVAKVEKGKSKKLKSVKELLGIT
                     IMERSSFEKNPIDFLEAKGYKEVKKDLIIKLPKYSLFELENGRKRMLASAGELQKGNEL
                     ALPSKYVNFLYLASHYEKLKGSPEDNEQKQLFVEQHKHYLDEIIEQISEFSKRVILADA
                     NLDKVLSAYNKHRDKPIREQAENIIHLFTLTNLGAPAAFKYFDTTIDRKRYTSTKEVLD
                     ATLIHQSITGLYETRIDLSQLGGD"
     CDS             5472..5519
                     /codon_start=1
                     /product="bipartite nuclear localization signal from 
                     nucleoplasmin"
                     /note="nucleoplasmin NLS"
                     /translation="KRPAATKKAGQAKKKK"
     polyA_signal    5553..5760
                     /note="bGH poly(A) signal"
                     /note="bovine growth hormone polyadenylation signal"
     repeat_region   5769..5909
                     /note="AAV2 ITR"
                     /note="inverted terminal repeat of adeno-associated virus 
                     serotype 2"
     rep_origin      5984..6439
                     /direction=RIGHT
                     /note="f1 ori"
                     /note="f1 bacteriophage origin of replication; arrow 
                     indicates direction of (+) strand synthesis"
     promoter        6721..6825
                     /gene="bla"
                     /note="AmpR promoter"
     CDS             6826..7686
                     /codon_start=1
                     /gene="bla"
                     /product="beta-lactamase"
                     /note="AmpR"
                     /note="confers resistance to ampicillin, carbenicillin, and
                     related antibiotics"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGYI
                     ELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRIDAGQEQLGRRIHYSQNDLVEYS
                     PVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRLDRW
                     EPELNEAIPNDERDTTMPVAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPLLRSA
                     LPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIAEIGAS
                     LIKHW"
     rep_origin      7857..8445
                     /direction=RIGHT
                     /note="ori"
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"