LOCUS       Exported                8731 bp ds-DNA     circular SYN 13-MAY-2021
DEFINITION  Modified CAG promoter-containing vector for ubiquitous expression of
            catalytically inactive Cas9 fused to KRAB repressor domain. For 
            targeted enhancer inactivation in chicken embryos..
ACCESSION   .
VERSION     .
KEYWORDS    pX330a dCas9-KRAB
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 8731)
  AUTHORS   Williams RM, Senanayake U, Artibani M, Taylor G, Wells D, Ahmed AA, 
            Sauka-Spengler T
  TITLE     Genome and epigenome engineering CRISPR toolkit for in vivo 
            modulation of cis-regulatory interactions and gene expression in the
            chicken embryo.
  JOURNAL   Development. 2018 Feb 23;145(4). pii: dev.160333. doi: 
            10.1242/dev.160333.
  PUBMED    29386245
REFERENCE   2  (bases 1 to 8731)
  AUTHORS   .
  TITLE     Direct Submission
COMMENT     SGRef: number: 1; type: "Journal Article"; journalName: 
            "Development."; date: "2018-02-23"; volume: "145(4). pii: 
            dev.160333. doi"; pages: " 10.1242/dev.160333"
FEATURES             Location/Qualifiers
     source          1..8731
                     /organism="synthetic DNA construct"
                     /mol_type="other DNA"
     rep_origin      24..612
                     /direction=RIGHT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     primer_bind     513..532
                     /label=pBR322ori-F
                     /note="pBR322 origin, forward primer"
     promoter        674..914
                     /label=U6 promoter
                     /note="RNA polymerase III promoter for human U6 snRNA"
     primer_bind     674..694
                     /label=hU6-F
                     /note="Human U6 promoter, forward primer"
     primer_bind     845..864
                     /label=LKO.1 5
                     /note="Human U6 promoter, forward primer"
     misc_RNA        941..1016
                     /label=gRNA scaffold
                     /note="guide RNA scaffold for the Streptococcus pyogenes 
                     CRISPR/Cas9 system"
     enhancer        1113..1398
                     /label=CMV enhancer
                     /note="human cytomegalovirus immediate early enhancer; 
                     contains an 18-bp deletion relative to the standard CMV 
                     enhancer"
     promoter        1400..1677
                     /label=chicken beta-actin promoter
     intron          1678..1906
                     /label=hybrid intron
                     /note="hybrid between chicken beta-actin (CBA) and minute 
                     virus of mice (MMV) introns (Gray et al., 2011)"
     CDS             1927..1947
                     /codon_start=1
                     /product="nuclear localization signal of SV40 (simian virus
                     40) large T antigen"
                     /label=SV40 NLS
                     /translation="PKKKRKV"
     CDS             1957..6060
                     /codon_start=1
                     /product="catalytically dead mutant of the Cas9 
                     endonuclease from the Streptococcus pyogenes Type II 
                     CRISPR/Cas system"
                     /label=Cas9m4
                     /note="RNA-guided DNA-binding protein that lacks 
                     endonuclease activity due to the mutations D10A, D839A, 
                     H840A, and N863A (Mali et al., 2013)"
                     /translation="MDKKYSIGLAIGTNSVGWAVITDEYKVPSKKFKVLGNTDRHSIKK
                     NLIGALLFDSGETAEATRLKRTARRRYTRRKNRICYLQEIFSNEMAKVDDSFFHRLEES
                     FLVEEDKKHERHPIFGNIVDEVAYHEKYPTIYHLRKKLVDSTDKADLRLIYLALAHMIK
                     FRGHFLIEGDLNPDNSDVDKLFIQLVQTYNQLFEENPINASGVDAKAILSARLSKSRRL
                     ENLIAQLPGEKKNGLFGNLIALSLGLTPNFKSNFDLAEDAKLQLSKDTYDDDLDNLLAQ
                     IGDQYADLFLAAKNLSDAILLSDILRVNTEITKAPLSASMIKRYDEHHQDLTLLKALVR
                     QQLPEKYKEIFFDQSKNGYAGYIDGGASQEEFYKFIKPILEKMDGTEELLVKLNREDLL
                     RKQRTFDNGSIPHQIHLGELHAILRRQEDFYPFLKDNREKIEKILTFRIPYYVGPLARG
                     NSRFAWMTRKSEETITPWNFEEVVDKGASAQSFIERMTNFDKNLPNEKVLPKHSLLYEY
                     FTVYNELTKVKYVTEGMRKPAFLSGEQKKAIVDLLFKTNRKVTVKQLKEDYFKKIECFD
                     SVEISGVEDRFNASLGTYHDLLKIIKDKDFLDNEENEDILEDIVLTLTLFEDREMIEER
                     LKTYAHLFDDKVMKQLKRRRYTGWGRLSRKLINGIRDKQSGKTILDFLKSDGFANRNFM
                     QLIHDDSLTFKEDIQKAQVSGQGDSLHEHIANLAGSPAIKKGILQTVKVVDELVKVMGR
                     HKPENIVIEMARENQTTQKGQKNSRERMKRIEEGIKELGSQILKEHPVENTQLQNEKLY
                     LYYLQNGRDMYVDQELDINRLSDYDVAAIVPQSFLKDDSIDNKVLTRSDKARGKSDNVP
                     SEEVVKKMKNYWRQLLNAKLITQRKFDNLTKAERGGLSELDKAGFIKRQLVETRQITKH
                     VAQILDSRMNTKYDENDKLIREVKVITLKSKLVSDFRKDFQFYKVREINNYHHAHDAYL
                     NAVVGTALIKKYPKLESEFVYGDYKVYDVRKMIAKSEQEIGKATAKYFFYSNIMNFFKT
                     EITLANGEIRKRPLIETNGETGEIVWDKGRDFATVRKVLSMPQVNIVKKTEVQTGGFSK
                     ESILPKRNSDKLIARKKDWDPKKYGGFDSPTVAYSVLVVAKVEKGKSKKLKSVKELLGI
                     TIMERSSFEKNPIDFLEAKGYKEVKKDLIIKLPKYSLFELENGRKRMLASAGELQKGNE
                     LALPSKYVNFLYLASHYEKLKGSPEDNEQKQLFVEQHKHYLDEIIEQISEFSKRVILAD
                     ANLDKVLSAYNKHRDKPIREQAENIIHLFTLTNLGAPAAFKYFDTTIDRKRYTSTKEVL
                     DATLIHQSITGLYETRIDLSQLGGD"
     CDS             6073..6093
                     /codon_start=1
                     /product="nuclear localization signal of SV40 (simian virus
                     40) large T antigen"
                     /label=SV40 NLS
                     /translation="PKKKRKV"
     CDS             6127..6321
                     /codon_start=1
                     /product="Kruppel-associated box (KRAB) transcriptional 
                     repression domain from the human zinc finger protein ZNF10 
                     (Margolin et al., 1994)"
                     /label=KRAB
                     /translation="RTLVTFKDVFVDFTREEWKLLDTAQQILYRNVMLENYKNLVSLGY
                     QLTKPDVILRLEKGEEPWLV"
     CDS             6388..6408
                     /codon_start=1
                     /product="nuclear localization signal of SV40 (simian virus
                     40) large T antigen"
                     /label=SV40 NLS
                     /translation="PKKKRKV"
     primer_bind     complement(6445..6462)
                     /label=BGH-rev
                     /note="Bovine growth hormone terminator, reverse primer. 
                     Also called BGH reverse"
     polyA_signal    6451..6658
                     /label=bGH poly(A) signal
                     /note="bovine growth hormone polyadenylation signal"
     repeat_region   6667..6807
                     /label=AAV2 ITR
                     /note="inverted terminal repeat of adeno-associated virus 
                     serotype 2"
     repeat_region   6667..6796
                     /label=AAV2 ITR
     rep_origin      6882..7337
                     /direction=RIGHT
                     /label=f1 ori
                     /note="f1 bacteriophage origin of replication; arrow 
                     indicates direction of (+) strand synthesis"
     primer_bind     complement(6969..6988)
                     /label=F1ori-R
                     /note="F1 origin, reverse primer"
     primer_bind     7179..7200
                     /label=F1ori-F
                     /note="F1 origin, forward primer"
     primer_bind     complement(7354..7373)
                     /label=pRS-marker
                     /note="pRS vectors, use to sequence yeast selectable 
                     marker"
     primer_bind     7473..7495
                     /label=pGEX 3
                     /note="pGEX vectors, reverse primer"
     primer_bind     complement(7533..7551)
                     /label=pBRforEco
                     /note="pBR322 vectors, upsteam of EcoRI site, forward 
                     primer"
     promoter        7619..7723
                     /gene="bla"
                     /label=AmpR promoter
     CDS             7724..8584
                     /codon_start=1
                     /gene="bla"
                     /product="beta-lactamase"
                     /label=AmpR
                     /note="confers resistance to ampicillin, carbenicillin, and
                     related antibiotics"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGYI
                     ELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRIDAGQEQLGRRIHYSQNDLVEYS
                     PVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRLDRW
                     EPELNEAIPNDERDTTMPVAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPLLRSA
                     LPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIAEIGAS
                     LIKHW"
     primer_bind     complement(7942..7961)
                     /label=Amp-R
                     /note="Ampicillin resistance gene, reverse primer"