LOCUS       sequence-115442-        5894 bp    DNA     circular SYN 15-DEC-2025
DEFINITION  Expresses malE-SPR16 in E. coli.
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 5894)
  AUTHORS   Tang NC, Chilkoti A
  TITLE     Combinatorial codon scrambling enables scalable gene synthesis and 
            amplification of repetitive proteins.
  JOURNAL   Nat Mater. 2016 Jan 4. doi: 10.1038/nmat4521.
  PUBMED    26726995
REFERENCE   2  (bases 1 to 5894)
  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 Mater. 
            2016 Jan 4. doi: 10.1038/nmat4521."
COMMENT     Sequence Label: pMAL-c5X-SPR16
FEATURES             Location/Qualifiers
     source          1..5894
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     promoter        3..80
                     /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."
     CDS             81..1163
                     /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     complement(100..119)
                     /label=LacI-R
                     /note="LacI, reverse primer"
     promoter        join(1406..1411,1412..1427,1428..1434)
                     /label=tac promoter
                     /note="strong E. coli promoter; hybrid between the trp and 
                     lac UV5 promoters"
     protein_bind    1442..1458
                     /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     1447..1469
                     /label=M13/pUC Reverse
                     /note="In lacZ gene"
     CDS             1528..2628
                     /codon_start=1
                     /gene="malE (mutated)"
                     /product="maltose binding protein from E. coli"
                     /label=MBP
                     /note="This version of the gene does not encode a signal 
                     sequence, so MBP will remain in the cytosol."
                     /translation="MKIEEGKLVIWINGDKGYNGLAEVGKKFEKDTGIKVTVEHPDKLE
                     EKFPQVAATGDGPDIIFWAHDRFGGYAQSGLLAEITPDKAFQDKLYPFTWDAVRYNGKL
                     IAYPIAVEALSLIYNKDLLPNPPKTWEEIPALDKELKAKGKSALMFNLQEPYFTWPLIA
                     ADGGYAFKYENGKYDIKDVGVDNAGAKAGLTFLVDLIKNKHMNADTDYSIAEAAFNKGE
                     TAMTINGPWAWSNIDTSKVNYGVTVLPTFKGQPSKPFVGVLSAGINAASPNKELAKEFL
                     ENYLLTDEGLEAVNKDKPLGAVALKSYEEELVKDPRIAATMENAQKGEIMPNIPQMSAF
                     WYAVRTAVINAASGRQTVDEALKDAQT"
     primer_bind     2602..2625
                     /label=MBP-F
                     /note="Maltose binding protein, forward primer"
     CDS             2677..2688
                     /codon_start=1
                     /product="Factor Xa recognition and cleavage site"
                     /label=Factor Xa site
                     /translation="IEGR"
     CDS             2947..2964
                     /codon_start=1
                     /product="6xHis affinity tag"
                     /label=6xHis
                     /translation="HHHHHH"
     terminator      2980..3066
                     /gene="Escherichia coli rrnB"
                     /label=rrnB T1 terminator
                     /note="transcription terminator T1 from the E. coli rrnB 
                     gene"
     terminator      3158..3185
                     /label=rrnB T2 terminator
                     /note="transcription terminator T2 from the E. coli rrnB 
                     gene"
     promoter        3213..3303
                     /gene="bla"
                     /label=AmpR promoter
     CDS             join(3304..3372,3373..4164)
                     /codon_start=1
                     /gene="bla"
                     /product="beta-lactamase"
                     /label=AmpR
                     /note="confers resistance to ampicillin, carbenicillin, and
                     related antibiotics"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGYI
                     ELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRVDAGQEQLGRRIHYSQNDLVEYS
                     PVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRLDRW
                     EPELNEAIPNDERDTTMPVAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPLLRSA
                     LPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIAEIGAS
                     LIKHW"
     primer_bind     complement(3522..3541)
                     /label=Amp-R
                     /note="Ampicillin resistance gene, reverse primer"
     rep_origin      4252..4840
                     /direction=RIGHT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     primer_bind     4741..4760
                     /label=pBR322ori-F
                     /note="pBR322 origin, forward primer"
     primer_bind     4994..5011
                     /label=L4440
                     /note="L4440 vector, forward primer"
     primer_bind     5194..5216
                     /label=pGEX 3'
                     /note="pGEX vectors, reverse primer"
     CDS             complement(5210..5401)
                     /codon_start=1
                     /gene="rop"
                     /product="Rop protein, which maintains plasmids at low copy
                     number"
                     /label=rop
                     /translation="MTKQEKTALNMARFIRSQTLTLLEKLNELDADEQADICESLHDHA
                     DELYRSCLARFGDDGENL"
ORIGIN
        1 ccgacaccat cgaatggtgc aaaacctttc gcggtatggc atgatagcgc ccggaagaga
       61 gtcaattcag ggtggtgaat gtgaaaccag taacgttata cgatgtcgca gagtatgccg
      121 gtgtctctta tcagaccgtt tcccgcgtgg tgaaccaggc cagccacgtt tctgcgaaaa
      181 cgcgggaaaa agtggaagcg gcgatggcgg agctgaatta cattcccaac cgcgtggcac
      241 aacaactggc gggcaaacag tcgttgctga ttggcgttgc cacctccagt ctggccctgc
      301 acgcgccgtc gcaaattgtc gcggcgatta aatctcgcgc cgatcaactg ggtgccagcg
      361 tggtggtgtc gatggtagaa cgaagcggcg tcgaagcctg taaagcggcg gtgcacaatc
      421 ttctcgcgca acgcgtcagt gggctgatca ttaactatcc gctggatgac caggatgcca
      481 ttgctgtgga agctgcctgc actaatgttc cggcgttatt tcttgatgtc tctgaccaga
      541 cacccatcaa cagtattatt ttctcccatg aagacggtac gcgactgggc gtggagcatc
      601 tggtcgcatt gggtcaccag caaatcgcgc tgttagcggg cccattaagt tctgtctcgg
      661 cgcgtctgcg tctggctggc tggcataaat atctcactcg caatcaaatt cagccgatag
      721 cggaacggga aggcgactgg agtgccatgt ccggttttca acaaaccatg caaatgctga
      781 atgagggcat cgttcccact gcgatgctgg ttgccaacga tcagatggcg ctgggcgcaa
      841 tgcgcgccat taccgagtcc gggctgcgcg ttggtgcgga tatttcggta gtgggatacg
      901 acgataccga agacagctca tgttatatcc cgccgttaac caccatcaaa caggattttc
      961 gcctgctggg gcaaaccagc gtggaccgct tgctgcaact ctctcagggc caggcggtga
     1021 agggcaatca gctgttgccc gtctcactgg tgaaaagaaa aaccaccctg gcgcccaata
     1081 cgcaaaccgc ctctccccgc gcgttggccg attcattaat gcagctggca cgacaggttt
     1141 cccgactgga aagcgggcag tgagcgcaac gcaattaatg taagttagct cactcattag
     1201 gcacaattct catgtttgac agcttatcat cgactgcacg gtgcaccaat gcttctggcg
     1261 tcaggcagcc atcggaagct gtggtatggc tgtgcaggtc gtaaatcact gcataattcg
     1321 tgtcgctcaa ggcgcactcc cgttctggat aatgtttttt gcgccgacat cataacggtt
     1381 ctggcaaata ttctgaaatg agctgttgac aattaatcat cggctcgtat aatgtgtgga
     1441 attgtgagcg gataacaatt tcacacagga aacagccagt ccgtttaggt gttttcacga
     1501 gcaattgacc aacaaggacc atagattatg aaaatcgaag aaggtaaact ggtaatctgg
     1561 attaacggcg ataaaggcta taacggtctc gctgaagtcg gtaagaaatt cgagaaagat
     1621 accggaatta aagtcaccgt tgagcatccg gataaactgg aagagaaatt cccacaggtt
     1681 gcggcaactg gcgatggccc tgacattatc ttctgggcac acgaccgctt tggtggctac
     1741 gctcaatctg gcctgttggc tgaaatcacc ccggacaaag cgttccagga caagctgtat
     1801 ccgtttacct gggatgccgt acgttacaac ggcaagctga ttgcttaccc gatcgctgtt
     1861 gaagcgttat cgctgattta taacaaagat ctgctgccga acccgccaaa aacctgggaa
     1921 gagatcccgg cgctggataa agaactgaaa gcgaaaggta agagcgcgct gatgttcaac
     1981 ctgcaagaac cgtacttcac ctggccgctg attgctgctg acgggggtta tgcgttcaag
     2041 tatgaaaacg gcaagtacga cattaaagac gtgggcgtgg ataacgctgg cgcgaaagcg
     2101 ggtctgacct tcctggttga cctgattaaa aacaaacaca tgaatgcaga caccgattac
     2161 tccatcgcag aagctgcctt taataaaggc gaaacagcga tgaccatcaa cggcccgtgg
     2221 gcatggtcca acatcgacac cagcaaagtg aattatggtg taacggtact gccgaccttc
     2281 aagggtcaac catccaaacc gttcgttggc gtgctgagcg caggtattaa cgccgccagt
     2341 ccgaacaaag agctggcaaa agagttcctc gaaaactatc tgctgactga tgaaggtctg
     2401 gaagcggtta ataaagacaa accgctgggt gccgtagcgc tgaagtctta cgaggaagag
     2461 ttggtgaaag atccgcgtat tgccgccact atggaaaacg cccagaaagg tgaaatcatg
     2521 ccgaacatcc cgcagatgtc cgctttctgg tatgccgtgc gtactgcggt gatcaacgcc
     2581 gccagcggtc gtcagactgt cgatgaagcc ctgaaagacg cgcagactaa ttcgagctcg
     2641 aacaacaaca acaataacaa taacaacaac ctcgggatcg agggaaggtc ttccggtcca
     2701 cagcagcctt acccacaaca accgtatccg cagcaaccat atccacagca gccctacccc
     2761 caacagccat atccccaaca accatacccc cagcagccat acccgcaaca accctaccca
     2821 cagcaacctt atccacaaca gccctatcct caacagcctt atcctcagca accctatccg
     2881 caacagccgt atccccagca accgtaccct caacaacctt accctcaaca accatacggc
     2941 tcgggacatc atcaccacca tcattaataa tgaaagcttc aaataaaacg aaaggctcag
     3001 tcgaaagact gggcctttcg ttttatctgt tgtttgtcgg tgaacgctct cctgagtagg
     3061 acaaatccgc cgggagcgga tttgaacgtt gcgaagcaac ggcccggagg gtggcgggca
     3121 ggacgcccgc cataaactgc caggcatcaa attaagcaga aggccatcct gacggatggc
     3181 ctttttgcgt ttctacaaac tctttcggtc cgttgtttat ttttctaaat acattcaaat
     3241 atgtatccgc tcatgagaca ataaccctga taaatgcttc aataatattg aaaaaggaag
     3301 agtatgagta ttcaacattt ccgtgtcgcc cttattccct tttttgcggc attttgcctt
     3361 cctgtttttg ctcacccaga aacgctggtg aaagtaaaag atgctgaaga tcagttgggt
     3421 gcacgagtgg gttacatcga actggatctc aacagcggta agatccttga gagttttcgc
     3481 cccgaagaac gtttcccaat gatgagcact tttaaagttc tgctatgtgg cgcggtatta
     3541 tcccgtgttg acgccgggca agagcaactc ggtcgccgca tacactattc tcagaatgac
     3601 ttggttgagt actcaccagt cacagaaaag catcttacgg atggcatgac agtaagagaa
     3661 ttatgcagtg ctgccataac catgagtgat aacactgcgg ccaacttact tctgacaacg
     3721 atcggaggac cgaaggagct aaccgctttt ttgcacaaca tgggggatca tgtaactcgc
     3781 cttgatcgtt gggaaccgga gctgaatgaa gccataccaa acgacgagcg tgacaccacg
     3841 atgcctgtag caatggcaac aacgttgcgc aaactattaa ctggcgaact acttactcta
     3901 gcttcccggc aacaattaat agactggatg gaggcggata aagttgcagg accacttctg
     3961 cgctcggccc ttccggctgg ctggtttatt gctgataaat ctggagccgg tgagcgtggg
     4021 tctcgcggta tcattgcagc actggggcca gatggtaagc cctcccgtat cgtagttatc
     4081 tacacgacgg ggagtcaggc aactatggat gaacgaaata gacagatcgc tgagataggt
     4141 gcctcactga ttaagcattg gtaactgtca gaccaagttt actcatatat actttagatt
     4201 gatttcctta ggactgagcg tcaaccccgt agaaaagatc aaaggatctt cttgagatcc
     4261 tttttttctg cgcgtaatct gctgcttgca aacaaaaaaa ccaccgctac cagcggtggt
     4321 ttgtttgccg gatcaagagc taccaactct ttttccgaag gtaactggct tcagcagagc
     4381 gcagatacca aatactgtcc ttctagtgta gccgtagtta ggccaccact tcaagaactc
     4441 tgtagcaccg cctacatacc tcgctctgct aatcctgtta ccagtggctg ctgccagtgg
     4501 cgataagtcg tgtcttaccg ggttggactc aagacgatag ttaccggata aggcgcagcg
     4561 gtcgggctga acggggggtt cgtgcacaca gcccagcttg gagcgaacga cctacaccga
     4621 actgagatac ctacagcgtg agctatgaga aagcgccacg cttcccgaag ggagaaaggc
     4681 ggacaggtat ccggtaagcg gcagggtcgg aacaggagag cgcacgaggg agcttccagg
     4741 gggaaacgcc tggtatcttt atagtcctgt cgggtttcgc cacctctgac ttgagcgtcg
     4801 atttttgtga tgctcgtcag gggggcggag cctatggaaa aacgccagca acgcggcctt
     4861 tttacggttc ctggcctttt gctggccttt tgctcacatg ttctttcctg cgttatcccc
     4921 tgattctgtg gataaccgta ttaccgcctt tgagtgagct gataccgctc gccgcagccg
     4981 aacgaccgag cgcagcgagt cagtgagcga ggaagcggaa gagcgcctga tgcggtattt
     5041 tctccttacg catctgtgcg gtatttcaca ccgcatataa ggtgcactgt gactgggtca
     5101 tggctgcgcc ccgacacccg ccaacacccg ctgacgcgcc ctgacgggct tgtctgctcc
     5161 cggcatccgc ttacagacaa gctgtgaccg tctccgggag ctgcatgtgt cagaggtttt
     5221 caccgtcatc accgaaacgc gcgaggcagc tgcggtaaag ctcatcagcg tggtcgtgca
     5281 gcgattcaca gatgtctgcc tgttcatccg cgtccagctc gttgagtttc tccagaagcg
     5341 ttaatgtctg gcttctgata aagcgggcca tgttaagggc ggttttttcc tgtttggtca
     5401 ctgatgcctc cgtgtaaggg ggatttctgt tcatgggggt aatgataccg atgaaacgag
     5461 agaggatgct cacgatacgg gttactgatg atgaacatgc ccggttactg gaacgttgtg
     5521 agggtaaaca actggcggta tggatgcggc gggaccagag aaaaatcact cagggtcaat
     5581 gccagcgctt cgttaataca gatgtaggtg ttccacaggg tagccagcag catcctgcga
     5641 tgcagatccg gaacataatg gtgcagggcg ctgacttccg cgtttccaga ctttacgaaa
     5701 cacggaaacc gaagaccatt catgttgttg ctcaggtcgc agacgttttg cagcagcagt
     5761 cgcttcacgt tcgctcgcgt atcggtgatt cattctgcta accagtaagg caaccccgcc
     5821 agcctagccg ggtcctcaac gacaggagca cgatcatgcg cacccgtggc caggacccaa
     5881 cgctgcccga aatt
//
