LOCUS       sequence-424417-        3349 bp    DNA     circular SYN 15-DEC-2025
DEFINITION  Expresses cloning backbone for SpCas9 sgRNA.
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 3349)
  AUTHORS   Qi T, Wang Y, Yang Y, Gao S, Liu J, Huang Q, Tian Y, Tang J, Zheng 
            WV, Wang Y
  TITLE     Phage-assisted evolution of compact Cas9 variants targeting a simple
            NNG PAM.
  JOURNAL   Nat Chem Biol. 2023 Dec 5. doi: 10.1038/s41589-023-01481-5.
  PUBMED    38052959
REFERENCE   2  (bases 1 to 3349)
  AUTHORS   .
  TITLE     Direct Submission
  JOURNAL   Exported Dec 15, 2025 from SnapGene Server 8.0.1
            https://www.snapgene.com
COMMENT     SGRef: number: 1; type: "Journal Article"; journalName: "Nat Chem 
            Biol. 2023 Dec 5. doi: 10.1038/s41589-023-01481-5."
COMMENT     Sequence Label: pSK-Spsg
FEATURES             Location/Qualifiers
     source          1..3349
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     promoter        21..125
                     /gene="bla"
                     /label=AmpR promoter
     CDS             join(126..194,195..986)
                     /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(344..363)
                     /label=Amp-R
                     /note="Ampicillin resistance gene, reverse primer"
     rep_origin      1157..1745
                     /direction=RIGHT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     primer_bind     1646..1665
                     /label=pBR322ori-F
                     /note="pBR322 origin, forward primer"
     primer_bind     1899..1916
                     /label=L4440
                     /note="L4440 vector, forward primer"
     protein_bind    2033..2054
                     /label=CAP binding site
                     /bound_moiety="E. coli catabolite activator protein"
                     /note="CAP binding activates transcription in the presence 
                     of cAMP."
     promoter        join(2069..2074,2075..2092,2093..2099)
                     /label=lac promoter
                     /note="promoter for the E. coli lac operon"
     protein_bind    2107..2123
                     /label=lac operator
                     /bound_moiety="lac repressor encoded by lacI"
                     /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)."
     primer_bind     2112..2134
                     /label=M13/pUC Reverse
                     /note="In lacZ gene"
     primer_bind     2131..2147
                     /label=M13 rev
                     /note="common sequencing primer, one of multiple similar 
                     variants"
     primer_bind     2131..2147
                     /label=M13 Reverse
                     /note="In lacZ gene. Also called M13-rev"
     primer_bind     2166..2186
                     /label=T3
                     /note="T3 promoter, forward primer"
     promoter        2168..2186
                     /label=T3 promoter
                     /note="promoter for bacteriophage T3 RNA polymerase"
     primer_bind     2223..2239
                     /label=SK primer
                     /note="common sequencing primer, one of multiple similar 
                     variants"
     primer_bind     2223..2239
                     /label=pBluescriptSK
                     /note="For pBluescript vector"
     promoter        2310..2622
                     /label=U6 promoter
                     /note="RNA polymerase III promoter for mouse U6 snRNA (Das 
                     et al., 1988)"
     primer_bind     2541..2561
                     /label=mU6-F
                     /note="Mouse U6 promoter, forward primer"
     misc_RNA        2641..2716
                     /label=gRNA scaffold
                     /note="guide RNA scaffold for the Streptococcus pyogenes 
                     CRISPR/Cas9 system"
     primer_bind     complement(2730..2747)
                     /label=M13 Forward
                     /note="In lacZ gene. Also called M13-F20 or M13 (-21) 
                     Forward"
     primer_bind     complement(2730..2746)
                     /label=M13 fwd
                     /note="common sequencing primer, one of multiple similar 
                     variants"
     primer_bind     complement(2739..2761)
                     /label=M13/pUC Forward
                     /note="In lacZ gene"
     rep_origin      complement(2887..3343)
                     /direction=LEFT
                     /label=f1 ori
                     /note="f1 bacteriophage origin of replication; arrow 
                     indicates direction of (+) strand synthesis"
     primer_bind     complement(3025..3046)
                     /label=F1ori-F
                     /note="F1 origin, forward primer"
     primer_bind     3237..3256
                     /label=F1ori-R
                     /note="F1 origin, reverse primer"
ORIGIN
        1 gcacttttcg gggaaatgtg cgcggaaccc ctatttgttt atttttctaa atacattcaa
       61 atatgtatcc gctcatgaga caataaccct gataaatgct tcaataatat tgaaaaagga
      121 agagtatgag tattcaacat ttccgtgtcg cccttattcc cttttttgcg gcattttgcc
      181 ttcctgtttt tgctcaccca gaaacgctgg tgaaagtaaa agatgctgaa gatcagttgg
      241 gtgcacgagt gggttacatc gaactggatc tcaacagcgg taagatcctt gagagttttc
      301 gccccgaaga acgttttcca atgatgagca cttttaaagt tctgctatgt ggcgcggtat
      361 tatcccgtat tgacgccggg caagagcaac tcggtcgccg catacactat tctcagaatg
      421 acttggttga gtactcacca gtcacagaaa agcatcttac ggatggcatg acagtaagag
      481 aattatgcag tgctgccata accatgagtg ataacactgc ggccaactta cttctgacaa
      541 cgatcggagg accgaaggag ctaaccgctt ttttgcacaa catgggggat catgtaactc
      601 gccttgatcg ttgggaaccg gagctgaatg aagccatacc aaacgacgag cgtgacacca
      661 cgatgcctgt agcaatggca acaacgttgc gcaaactatt aactggcgaa ctacttactc
      721 tagcttcccg gcaacaatta atagactgga tggaggcgga taaagttgca ggaccacttc
      781 tgcgctcggc ccttccggct ggctggttta ttgctgataa atctggagcc ggtgagcgtg
      841 ggtctcgcgg tatcattgca gcactggggc cagatggtaa gccctcccgt atcgtagtta
      901 tctacacgac ggggagtcag gcaactatgg atgaacgaaa tagacagatc gctgagatag
      961 gtgcctcact gattaagcat tggtaactgt cagaccaagt ttactcatat atactttaga
     1021 ttgatttaaa acttcatttt taatttaaaa ggatctaggt gaagatcctt tttgataatc
     1081 tcatgaccaa aatcccttaa cgtgagtttt cgttccactg agcgtcagac cccgtagaaa
     1141 agatcaaagg atcttcttga gatccttttt ttctgcgcgt aatctgctgc ttgcaaacaa
     1201 aaaaaccacc gctaccagcg gtggtttgtt tgccggatca agagctacca actctttttc
     1261 cgaaggtaac tggcttcagc agagcgcaga taccaaatac tgttcttcta gtgtagccgt
     1321 agttaggcca ccacttcaag aactctgtag caccgcctac atacctcgct ctgctaatcc
     1381 tgttaccagt ggctgctgcc agtggcgata agtcgtgtct taccgggttg gactcaagac
     1441 gatagttacc ggataaggcg cagcggtcgg gctgaacggg gggttcgtgc acacagccca
     1501 gcttggagcg aacgacctac accgaactga gatacctaca gcgtgagcta tgagaaagcg
     1561 ccacgcttcc cgaagggaga aaggcggaca ggtatccggt aagcggcagg gtcggaacag
     1621 gagagcgcac gagggagctt ccagggggaa acgcctggta tctttatagt cctgtcgggt
     1681 ttcgccacct ctgacttgag cgtcgatttt tgtgatgctc gtcagggggg cggagcctat
     1741 ggaaaaacgc cagcaacgcg gcctttttac ggttcctggc cttttgctgg ccttttgctc
     1801 acatgttctt tcctgcgtta tcccctgatt ctgtggataa ccgtattacc gcctttgagt
     1861 gagctgatac cgctcgccgc agccgaacga ccgagcgcag cgagtcagtg agcgaggaag
     1921 cggaagagcg cccaatacgc aaaccgcctc tccccgcgcg ttggccgatt cattaatgca
     1981 gctggcacga caggtttccc gactggaaag cgggcagtga gcgcaacgca attaatgtga
     2041 gttagctcac tcattaggca ccccaggctt tacactttat gcttccggct cgtatgttgt
     2101 gtggaattgt gagcggataa caatttcaca caggaaacag ctatgaccat gattacgcca
     2161 agcgcgcaat taaccctcac taaagggaac aaaagctgga gctccaccgc ggtggcggcc
     2221 gctctagaac tagtggatcc cccgggctgc aggaattcga tatcaagctt atcgatatcc
     2281 agtttggtta gtaccgggcc cgctctagag atccgacgcg ccatctctag gcccgcgccg
     2341 gccccctcgc acagacttgt gggagaagct cggctactcc cctgccccgg ttaatttgca
     2401 tataatattt cctagtaact atagaggctt aatgtgcgat aaaagacaga taatctgttc
     2461 tttttaatac tagctacatt ttacatgata ggcttggatt tctataagag atacaaatac
     2521 taaattatta ttttaaaaaa cagcacaaaa ggaaactcac cctaactgta aagtaattgt
     2581 gtgttttgag actataaata tcccttggag aaaagccttg tttgagtctt ctcagaagac
     2641 gttttagagc tagaaatagc aagttaaaat aaggctagtc cgttatcaac ttgaaaaagt
     2701 ggcaccgagt cggtgctttt tttcgcctca ctggccgtcg ttttacaacg tcgtgactgg
     2761 gaaaaccctg gcgttaccca acttaatcgc cttgcagcac atcccccttt cgccagctgg
     2821 cgtaatagcg aagaggcccg caccgatcgc ccttcccaac agttgcgcag cctgaatggc
     2881 gaatggaaat tgtaagcgtt aatattttgt taaaattcgc gttaaatttt tgttaaatca
     2941 gctcattttt ttaaccaata ggccgaaatc ggcaaaatcc cttataaatc aaaagaatag
     3001 accgagatag ggttgagtgt tgttccagtt tggaacaaga gtccactatt aaagaacgtg
     3061 gactccaacg tcaaagggcg aaaaaccgtc tatcagggcg atggcccact acgtgaacca
     3121 tcaccctaat caagtttttt ggggtcgagg tgccgtaaag cactaaatcg gaaccctaaa
     3181 gggagccccc gatttagagc ttgacgggga aagccggcga acgtggcgag aaaggaaggg
     3241 aagaaagcga aaggagcggg cgctagggcg ctggcaagtg tagcggtcac gctgcgcgta
     3301 accaccacac ccgccgcgct taatgcgccg ctacagggcg cgtcaggtg
//
