LOCUS       sequence-108962-        4191 bp    DNA     circular SYN 15-DEC-2025
DEFINITION  E. coli expression plasmid, useful in conjunction with pUCXKT for 
            positive selection cloning and expression.
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 4191)
  AUTHORS   Prosser GA, Williams EM, Sissons JA, Walmsley KE, Parker MR, 
            Ackerley DF
  TITLE     A gain-of-function positive-selection expression plasmid that 
            enables high-efficiency cloning.
  JOURNAL   Biotechnol Lett. 2014 Sep 26.
  PUBMED    25257589
REFERENCE   2  (bases 1 to 4191)
  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: "Biotechnol 
            Lett. 2014 Sep 26."
COMMENT     Sequence Label: pUCX
FEATURES             Location/Qualifiers
     source          1..4191
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     primer_bind     complement(10..28)
                     /label=pBRforEco
                     /note="pBR322 vectors, upsteam of EcoRI site, forward 
                     primer"
     promoter        96..200
                     /gene="bla"
                     /label=AmpR promoter
     CDS             join(201..269,270..1061)
                     /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(419..438)
                     /label=Amp-R
                     /note="Ampicillin resistance gene, reverse primer"
     rep_origin      1232..1820
                     /direction=RIGHT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     primer_bind     1721..1740
                     /label=pBR322ori-F
                     /note="pBR322 origin, forward primer"
     primer_bind     1974..1991
                     /label=L4440
                     /note="L4440 vector, forward primer"
     CDS             complement(2011..3093)
                     /codon_start=1
                     /gene="lacI"
                     /product="lac repressor"
                     /label=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)."
                     /translation="MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAEL
                     NYIPNRVAQQLAGKQSLLIGVATSSLALHAPSQIVAAIKSRADQLGASVVVSMVERSGV
                     EACKAAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVSDQTPINSIIFSH
                     EDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGWHKYLTRNQIQPIAEREGDWSA
                     MSGFQQTMQMLNEGIVPTAMLVANDQMALGAMRAITESGLRVGADISVVGYDDTEDSSC
                     YIPPLTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLPVSLVKRKTTLAPNTQTASPR
                     ALADSLMQLARQVSRLESGQ"
     primer_bind     3055..3074
                     /label=LacI-R
                     /note="LacI, reverse primer"
     promoter        complement(3094..3171)
                     /gene="lacI (mutant)"
                     /label=lacIq promoter
                     /note="In the lacIq allele, a single base change in the 
                     promoter boosts expression of the lacI gene about 10-fold."
     promoter        join(3401..3406,3407..3422,3423..3429)
                     /label=tac promoter
                     /note="strong E. coli promoter; hybrid between the trp and 
                     lac UV5 promoters"
     protein_bind    3433..3457
                     /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)."
     RBS             3472..3494
                     /note="efficient ribosome binding site from bacteriophage 
                     T7 gene 10 (Olins and Rangwala, 1989)"
     primer_bind     complement(3572..3589)
                     /label=pBAD Reverse
                     /note="For vectors with E. coli araBAD promoter, reverse 
                     primer"
     terminator      3742..3828
                     /gene="Escherichia coli rrnB"
                     /label=rrnB T1 terminator
                     /note="transcription terminator T1 from the E. coli rrnB 
                     gene"
     terminator      3920..3947
                     /label=rrnB T2 terminator
                     /note="transcription terminator T2 from the E. coli rrnB 
                     gene"
     primer_bind     complement(4022..4041)
                     /label=pRS-marker
                     /note="pRS vectors, use to sequence yeast selectable 
                     marker"
     primer_bind     4141..4163
                     /label=pGEX 3'
                     /note="pGEX vectors, reverse primer"
ORIGIN
        1 gacgaaaggg cctcgtgata cgcctatttt tataggttaa tgtcatgata ataatggttt
       61 cttagacgtc aggtggcact tttcggggaa atgtgcgcgg aacccctatt tgtttatttt
      121 tctaaataca ttcaaatatg tatccgctca tgagacaata accctgataa atgcttcaat
      181 aatattgaaa aaggaagagt atgagtattc aacatttccg tgtcgccctt attccctttt
      241 ttgcggcatt ttgccttcct gtttttgctc acccagaaac gctggtgaaa gtaaaagatg
      301 ctgaagatca gttgggtgca cgagtgggtt acatcgaact ggatctcaac agcggtaaga
      361 tccttgagag ttttcgcccc gaagaacgtt ttccaatgat gagcactttt aaagttctgc
      421 tatgtggcgc ggtattatcc cgtattgacg ccgggcaaga gcaactcggt cgccgcatac
      481 actattctca gaatgacttg gttgagtact caccagtcac agaaaagcat cttacggatg
      541 gcatgacagt aagagaatta tgcagtgctg ccataaccat gagtgataac actgcggcca
      601 acttacttct gacaacgatc ggaggaccga aggagctaac cgcttttttg cacaacatgg
      661 gggatcatgt aactcgcctt gatcgttggg aaccggagct gaatgaagcc ataccaaacg
      721 acgagcgtga caccacgatg cctgtagcaa tggcaacaac gttgcgcaaa ctattaactg
      781 gcgaactact tactctagct tcccggcaac aattaataga ctggatggag gcggataaag
      841 ttgcaggacc acttctgcgc tcggcccttc cggctggctg gtttattgct gataaatctg
      901 gagccggtga gcgtgggtct cgcggtatca ttgcagcact ggggccagat ggtaagccct
      961 cccgtatcgt agttatctac acgacgggga gtcaggcaac tatggatgaa cgaaatagac
     1021 agatcgctga gataggtgcc tcactgatta agcattggta actgtcagac caagtttact
     1081 catatatact ttagattgat ttaaaacttc atttttaatt taaaaggatc taggtgaaga
     1141 tcctttttga taatctcatg accaaaatcc cttaacgtga gttttcgttc cactgagcgt
     1201 cagaccccgt agaaaagatc aaaggatctt cttgagatcc tttttttctg cgcgtaatct
     1261 gctgcttgca aacaaaaaaa ccaccgctac cagcggtggt ttgtttgccg gatcaagagc
     1321 taccaactct ttttccgaag gtaactggct tcagcagagc gcagatacca aatactgtcc
     1381 ttctagtgta gccgtagtta ggccaccact tcaagaactc tgtagcaccg cctacatacc
     1441 tcgctctgct aatcctgtta ccagtggctg ctgccagtgg cgataagtcg tgtcttaccg
     1501 ggttggactc aagacgatag ttaccggata aggcgcagcg gtcgggctga acggggggtt
     1561 cgtgcacaca gcccagcttg gagcgaacga cctacaccga actgagatac ctacagcgtg
     1621 agctatgaga aagcgccacg cttcccgaag ggagaaaggc ggacaggtat ccggtaagcg
     1681 gcagggtcgg aacaggagag cgcacgaggg agcttccagg gggaaacgcc tggtatcttt
     1741 atagtcctgt cgggtttcgc cacctctgac ttgagcgtcg atttttgtga tgctcgtcag
     1801 gggggcggag cctatggaaa aacgccagca acgcggcctt tttacggttc ctggcctttt
     1861 gctggccttt tgctcacatg ttctttcctg cgttatcccc tgattctgtg gataaccgta
     1921 ttaccgcctt tgagtgagct gataccgctc gccgcagccg aacgaccgag cgcagcgagt
     1981 cagtgagcga ggaagcggaa gagcaccggt tcactgcccg ctttccagtc gggaaacctg
     2041 tcgtgccagc tgcattaatg aatcggccaa cgcgcgggga gaggcggttt gcgtattggg
     2101 cgccagggtg gtttttcttt tcaccagtga gacgggcaac agctgattgc ccttcaccgc
     2161 ctggccctga gagagttgca gcaagcggtc cacgctggtt tgccccagca ggcgaaaatc
     2221 ctgtttgatg gtggttaacg gcgggatata acatgagctg tcttcggtat cgtcgtatcc
     2281 cactaccgag atatccgcac caacgcgcag cccggactcg gtaatggcgc gcattgcgcc
     2341 cagcgccatc tgatcgttgg caaccagcat cgcagtggga acgatgccct cattcagcat
     2401 ttgcatggtt tgttgaaaac cggacatggc actccagtcg ccttcccgtt ccgctatcgg
     2461 ctgaatttga ttgcgagtga gatatttatg ccagccagcc agacgcagac gcgccgagac
     2521 agaacttaat gggcccgcta acagcgcgat ttgctggtga cccaatgcga ccagatgctc
     2581 cacgcccagt cgcgtaccgt cttcatggga gaaaataata ctgttgatgg gtgtctggtc
     2641 agagacatca agaaataacg ccggaacatt agtgcaggca gcttccacag caatggcatc
     2701 ctggtcatcc agcggatagt taatgatcag cccactgacg cgttgcgcga gaagattgtg
     2761 caccgccgct ttacaggctt cgacgccgct tcgttctacc atcgacacca ccacgctggc
     2821 acccagttga tcggcgcgag atttaatcgc cgcgacaatt tgcgacggcg cgtgcagggc
     2881 cagactggag gtggcaacgc caatcagcaa cgactgtttg cccgccagtt gttgtgccac
     2941 gcggttggga atgtaattca gctccgccat cgccgcttcc actttttccc gcgttttcgc
     3001 agaaacgtgg ctggcctggt tcaccacgcg ggaaacggtc tgataagaga caccggcata
     3061 ctctgcgaca tcgtataacg ttactggttt cacattcacc accctgaatt gactctcttc
     3121 cgggcgctat catgccatac cgcgaaaggt tttgcaccat tcgatggtgt caacgtaaat
     3181 gccgcttcgc cttcgcgcgc gaattgcaag ctgatccggg cttatcgact gcacggtgca
     3241 ccaatgcttc tggcgtcagg cagccatcgg aagctgtggt atggctgtgc aggtcgtaaa
     3301 tcactgcata attcgtgtcg ctcaaggcgc actcccgttc tggataatgt tttttgcgcc
     3361 gacatcataa cggttctggc aaatattctg aaatgagctg ttgacaatta atcatcggct
     3421 cgtataatgt gtggaattgt gagcggataa caattcccct ctagaaataa ttttgtttaa
     3481 ctttaagaag gagatatcat atgggatcct ctagagtcga cctgcaggca tgcaagcttg
     3541 gctgttttgg cggatgagag aagattttca gcctgataca gattaaatca gaacgcagaa
     3601 gcggtctgat aaaacagaat ttgcctggcg gcagtagcgc ggtggtccca cctgacccca
     3661 tgccgaactc agaagtgaaa cgccgtagcg ccgatggtag tgtggggtct ccccatgcga
     3721 gagtagggaa ctgccaggca tcaaataaaa cgaaaggctc agtcgaaaga ctgggccttt
     3781 cgttttatct gttgtttgtc ggtgaacgct ctcctgagta ggacaaatcc gccgggagcg
     3841 gatttgaacg ttgcgaagca acggcccgga gggtggcggg caggacgccc gccataaact
     3901 gccaggcatc aaattaagca gaaggccatc ctgacggatg gcctttttgc gtttctacaa
     3961 actcttttgt ttatttttct aaatacattc aaatatgtat ccgactagtg tgcactctca
     4021 gtacaatctg ctctgatgcc gcatagttaa gccagccccg acacccgcca acacccgctg
     4081 acgcgccctg acgggcttgt ctgctcccgg catccgctta cagacaagct gtgaccgtct
     4141 ccgggagctg catgtgtcag aggttctcac cgtcatcacc gaaacgcgcg a
//
