LOCUS       sequence-115444-        5921 bp    DNA     circular SYN 15-DEC-2025
DEFINITION  Expresses malE-poly(alanylglycine) in E. coli.
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 5921)
  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 5921)
  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-poly(alanylglycine)
FEATURES             Location/Qualifiers
     source          1..5921
                     /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             2974..2991
                     /codon_start=1
                     /product="6xHis affinity tag"
                     /label=6xHis
                     /translation="HHHHHH"
     terminator      3007..3093
                     /gene="Escherichia coli rrnB"
                     /label=rrnB T1 terminator
                     /note="transcription terminator T1 from the E. coli rrnB 
                     gene"
     terminator      3185..3212
                     /label=rrnB T2 terminator
                     /note="transcription terminator T2 from the E. coli rrnB 
                     gene"
     promoter        3240..3330
                     /gene="bla"
                     /label=AmpR promoter
     CDS             join(3331..3399,3400..4191)
                     /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(3549..3568)
                     /label=Amp-R
                     /note="Ampicillin resistance gene, reverse primer"
     rep_origin      4279..4867
                     /direction=RIGHT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     primer_bind     4768..4787
                     /label=pBR322ori-F
                     /note="pBR322 origin, forward primer"
     primer_bind     5021..5038
                     /label=L4440
                     /note="L4440 vector, forward primer"
     primer_bind     5221..5243
                     /label=pGEX 3'
                     /note="pGEX vectors, reverse primer"
     CDS             complement(5237..5428)
                     /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 ttccggtgca
     2701 ggagctggag cagggccaga aggggcagga gcgggggccg gtcctgaagg tgctggagcc
     2761 ggtgcaggac ccgagggagc aggcgccgga gcaggtcccg aaggtgcggg cgcgggtgca
     2821 ggtcctgagg gtgctggcgc tggagctggg cctgaaggcg caggagcagg agccggacca
     2881 gaaggtgccg gggctggtgc tggtccagag ggggcgggag ctggtgcagg cccggaaggt
     2941 gcaggggctg gggcgggacc agagggctcg ggacatcatc accaccatca ttaataatga
     3001 aagcttcaaa taaaacgaaa ggctcagtcg aaagactggg cctttcgttt tatctgttgt
     3061 ttgtcggtga acgctctcct gagtaggaca aatccgccgg gagcggattt gaacgttgcg
     3121 aagcaacggc ccggagggtg gcgggcagga cgcccgccat aaactgccag gcatcaaatt
     3181 aagcagaagg ccatcctgac ggatggcctt tttgcgtttc tacaaactct ttcggtccgt
     3241 tgtttatttt tctaaataca ttcaaatatg tatccgctca tgagacaata accctgataa
     3301 atgcttcaat aatattgaaa aaggaagagt atgagtattc aacatttccg tgtcgccctt
     3361 attccctttt ttgcggcatt ttgccttcct gtttttgctc acccagaaac gctggtgaaa
     3421 gtaaaagatg ctgaagatca gttgggtgca cgagtgggtt acatcgaact ggatctcaac
     3481 agcggtaaga tccttgagag ttttcgcccc gaagaacgtt tcccaatgat gagcactttt
     3541 aaagttctgc tatgtggcgc ggtattatcc cgtgttgacg ccgggcaaga gcaactcggt
     3601 cgccgcatac actattctca gaatgacttg gttgagtact caccagtcac agaaaagcat
     3661 cttacggatg gcatgacagt aagagaatta tgcagtgctg ccataaccat gagtgataac
     3721 actgcggcca acttacttct gacaacgatc ggaggaccga aggagctaac cgcttttttg
     3781 cacaacatgg gggatcatgt aactcgcctt gatcgttggg aaccggagct gaatgaagcc
     3841 ataccaaacg acgagcgtga caccacgatg cctgtagcaa tggcaacaac gttgcgcaaa
     3901 ctattaactg gcgaactact tactctagct tcccggcaac aattaataga ctggatggag
     3961 gcggataaag ttgcaggacc acttctgcgc tcggcccttc cggctggctg gtttattgct
     4021 gataaatctg gagccggtga gcgtgggtct cgcggtatca ttgcagcact ggggccagat
     4081 ggtaagccct cccgtatcgt agttatctac acgacgggga gtcaggcaac tatggatgaa
     4141 cgaaatagac agatcgctga gataggtgcc tcactgatta agcattggta actgtcagac
     4201 caagtttact catatatact ttagattgat ttccttagga ctgagcgtca accccgtaga
     4261 aaagatcaaa ggatcttctt gagatccttt ttttctgcgc gtaatctgct gcttgcaaac
     4321 aaaaaaacca ccgctaccag cggtggtttg tttgccggat caagagctac caactctttt
     4381 tccgaaggta actggcttca gcagagcgca gataccaaat actgtccttc tagtgtagcc
     4441 gtagttaggc caccacttca agaactctgt agcaccgcct acatacctcg ctctgctaat
     4501 cctgttacca gtggctgctg ccagtggcga taagtcgtgt cttaccgggt tggactcaag
     4561 acgatagtta ccggataagg cgcagcggtc gggctgaacg gggggttcgt gcacacagcc
     4621 cagcttggag cgaacgacct acaccgaact gagataccta cagcgtgagc tatgagaaag
     4681 cgccacgctt cccgaaggga gaaaggcgga caggtatccg gtaagcggca gggtcggaac
     4741 aggagagcgc acgagggagc ttccaggggg aaacgcctgg tatctttata gtcctgtcgg
     4801 gtttcgccac ctctgacttg agcgtcgatt tttgtgatgc tcgtcagggg ggcggagcct
     4861 atggaaaaac gccagcaacg cggccttttt acggttcctg gccttttgct ggccttttgc
     4921 tcacatgttc tttcctgcgt tatcccctga ttctgtggat aaccgtatta ccgcctttga
     4981 gtgagctgat accgctcgcc gcagccgaac gaccgagcgc agcgagtcag tgagcgagga
     5041 agcggaagag cgcctgatgc ggtattttct ccttacgcat ctgtgcggta tttcacaccg
     5101 catataaggt gcactgtgac tgggtcatgg ctgcgccccg acacccgcca acacccgctg
     5161 acgcgccctg acgggcttgt ctgctcccgg catccgctta cagacaagct gtgaccgtct
     5221 ccgggagctg catgtgtcag aggttttcac cgtcatcacc gaaacgcgcg aggcagctgc
     5281 ggtaaagctc atcagcgtgg tcgtgcagcg attcacagat gtctgcctgt tcatccgcgt
     5341 ccagctcgtt gagtttctcc agaagcgtta atgtctggct tctgataaag cgggccatgt
     5401 taagggcggt tttttcctgt ttggtcactg atgcctccgt gtaaggggga tttctgttca
     5461 tgggggtaat gataccgatg aaacgagaga ggatgctcac gatacgggtt actgatgatg
     5521 aacatgcccg gttactggaa cgttgtgagg gtaaacaact ggcggtatgg atgcggcggg
     5581 accagagaaa aatcactcag ggtcaatgcc agcgcttcgt taatacagat gtaggtgttc
     5641 cacagggtag ccagcagcat cctgcgatgc agatccggaa cataatggtg cagggcgctg
     5701 acttccgcgt ttccagactt tacgaaacac ggaaaccgaa gaccattcat gttgttgctc
     5761 aggtcgcaga cgttttgcag cagcagtcgc ttcacgttcg ctcgcgtatc ggtgattcat
     5821 tctgctaacc agtaaggcaa ccccgccagc ctagccgggt cctcaacgac aggagcacga
     5881 tcatgcgcac ccgtggccag gacccaacgc tgcccgaaat t
//
