LOCUS       sequence-479014-        6686 bp    DNA     circular SYN 15-DEC-2025
DEFINITION  Expresses E. coli GABA transaminase (GABA-T/gabT) for recombinant 
            protein purification. Contains a His6-tag on its C-terminus for Ni2+
            affinity chromatography..
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 6686)
  AUTHORS   Benidickson KH, Symonds KF, Snedden WA, Plaxton WC
  TITLE     Cost-effective production of Escherichia coli ""GABase"" for 
            spectrophotometric determination of gamma-aminobutyrate (GABA) 
            levels or glutamate decarboxylase activity.
  JOURNAL   Biol Methods Protoc. 2025 Jun 20;10(1):bpaf050. doi: 
            10.1093/biomethods/bpaf050. eCollection 2025.
  PUBMED    40656557
REFERENCE   2  (bases 1 to 6686)
  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: "Biol 
            Methods Protoc."; date: "2025-06-20"; volume: "10(1):bpaf050. doi"; 
            pages: " 10.1093/biomethods/bpaf050. eCollection 2025"
COMMENT     Sequence Label: pET30a-GABAT
FEATURES             Location/Qualifiers
     source          1..6686
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     rep_origin      1..589
                     /direction=RIGHT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     primer_bind     490..509
                     /label=pBR322ori-F
                     /note="pBR322 origin, forward primer"
     primer_bind     743..760
                     /label=L4440
                     /note="L4440 vector, forward primer"
     misc_feature    775..914
                     /label=bom
                     /note="basis of mobility region from pBR322"
     primer_bind     complement(840..859)
                     /label=pRS-marker
                     /note="pRS vectors, use to sequence yeast selectable 
                     marker"
     primer_bind     1000..1022
                     /label=pGEX 3'
                     /note="pGEX vectors, reverse primer"
     CDS             complement(1016..1207)
                     /codon_start=1
                     /gene="rop"
                     /product="Rop protein, which maintains plasmids at low copy
                     number"
                     /label=rop
                     /translation="MTKQEKTALNMARFIRSQTLTLLEKLNELDADEQADICESLHDHA
                     DELYRSCLARFGDDGENL"
     CDS             complement(2016..3098)
                     /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     3060..3079
                     /label=LacI-R
                     /note="LacI, reverse primer"
     promoter        complement(3099..3176)
                     /gene="lacI"
                     /label=lacI promoter
     primer_bind     3382..3401
                     /label=pBRrevBam
                     /note="pBR322 vectors, tet region, downstream of BamHI, 
                     reverse primer"
     primer_bind     3489..3508
                     /label=T7
                     /note="T7 promoter, forward primer"
     promoter        3489..3507
                     /label=T7 promoter
                     /note="promoter for bacteriophage T7 RNA polymerase"
     protein_bind    3508..3532
                     /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             3547..3569
                     /note="efficient ribosome binding site from bacteriophage 
                     T7 gene 10 (Olins and Rangwala, 1989)"
     CDS             3580..3597
                     /codon_start=1
                     /product="6xHis affinity tag"
                     /label=6xHis
                     /translation="HHHHHH"
     CDS             3607..3624
                     /codon_start=1
                     /product="thrombin recognition and cleavage site"
                     /label=thrombin site
                     /translation="LVPRGS"
     CDS             3631..3675
                     /codon_start=1
                     /product="affinity and epitope tag derived from pancreatic 
                     ribonuclease A"
                     /label=S-Tag
                     /translation="KETAAAKFERQHMDS"
     CDS             3691..3705
                     /codon_start=1
                     /product="enterokinase recognition and cleavage site"
                     /label=enterokinase site
                     /translation="DDDDK"
     CDS             5035..5052
                     /codon_start=1
                     /product="6xHis affinity tag"
                     /label=6xHis
                     /translation="HHHHHH"
     primer_bind     complement(5105..5123)
                     /label=T7 Term
                     /note="T7 terminator, reverse primer"
     terminator      5119..5166
                     /label=T7 terminator
                     /note="transcription terminator for bacteriophage T7 RNA 
                     polymerase"
     rep_origin      5203..5658
                     /direction=RIGHT
                     /label=f1 ori
                     /note="f1 bacteriophage origin of replication; arrow 
                     indicates direction of (+) strand synthesis"
     primer_bind     complement(5290..5309)
                     /label=F1ori-R
                     /note="F1 origin, reverse primer"
     primer_bind     5500..5521
                     /label=F1ori-F
                     /note="F1 origin, forward primer"
     CDS             complement(5750..6565)
                     /codon_start=1
                     /product="aminoglycoside phosphotransferase"
                     /label=KanR
                     /note="confers resistance to kanamycin in bacteria or G418 
                     (Geneticin(R)) in eukaryotes"
                     /translation="MSHIQRETSCSRPRLNSNMDADLYGYKWARDNVGQSGATIYRLYG
                     KPDAPELFLKHGKGSVANDVTDEMVRLNWLTEFMPLPTIKHFIRTPDDAWLLTTAIPGK
                     TAFQVLEEYPDSGENIVDALAVFLRRLHSIPVCNCPFNSDRVFRLAQAQSRMNNGLVDA
                     SDFDDERNGWPVEQVWKEMHKLLPFSPDSVVTHGDFSLDNLIFDEGKLIGCIDVGRVGI
                     ADRYQDLAILWNCLGEFSPSLQKRLFQKYGIDNPDMNKLQFHLMLDEFF"
     CDS             complement(5750..6565)
                     /codon_start=1
                     /gene="aph(3')-Ia"
                     /product="aminoglycoside phosphotransferase"
                     /label=KanR
                     /note="confers resistance to kanamycin in bacteria or G418 
                     (Geneticin(R)) in eukaryotes"
                     /translation="MSHIQRETSCSRPRLNSNMDADLYGYKWARDNVGQSGATIYRLYG
                     KPDAPELFLKHGKGSVANDVTDEMVRLNWLTEFMPLPTIKHFIRTPDDAWLLTTAIPGK
                     TAFQVLEEYPDSGENIVDALAVFLRRLHSIPVCNCPFNSDRVFRLAQAQSRMNNGLVDA
                     SDFDDERNGWPVEQVWKEMHKLLPFSPDSVVTHGDFSLDNLIFDEGKLIGCIDVGRVGI
                     ADRYQDLAILWNCLGEFSPSLQKRLFQKYGIDNPDMNKLQFHLMLDEFF"
     primer_bind     6473..6492
                     /label=Kan-R
                     /note="Kanamycin resistance gene, reverse primer"
     primer_bind     6557..6576
                     /label=pENTR-R
                     /note="pENTR vectors, reverse primer"
ORIGIN
        1 ttgagatcct ttttttctgc gcgtaatctg ctgcttgcaa acaaaaaaac caccgctacc
       61 agcggtggtt tgtttgccgg atcaagagct accaactctt tttccgaagg taactggctt
      121 cagcagagcg cagataccaa atactgtcct tctagtgtag ccgtagttag gccaccactt
      181 caagaactct gtagcaccgc ctacatacct cgctctgcta atcctgttac cagtggctgc
      241 tgccagtggc gataagtcgt gtcttaccgg gttggactca agacgatagt taccggataa
      301 ggcgcagcgg tcgggctgaa cggggggttc gtgcacacag cccagcttgg agcgaacgac
      361 ctacaccgaa ctgagatacc tacagcgtga gctatgagaa agcgccacgc ttcccgaagg
      421 gagaaaggcg gacaggtatc cggtaagcgg cagggtcgga acaggagagc gcacgaggga
      481 gcttccaggg ggaaacgcct ggtatcttta tagtcctgtc gggtttcgcc acctctgact
      541 tgagcgtcga tttttgtgat gctcgtcagg ggggcggagc ctatggaaaa acgccagcaa
      601 cgcggccttt ttacggttcc tggccttttg ctggcctttt gctcacatgt tctttcctgc
      661 gttatcccct gattctgtgg ataaccgtat taccgccttt gagtgagctg ataccgctcg
      721 ccgcagccga acgaccgagc gcagcgagtc agtgagcgag gaagcggaag agcgcctgat
      781 gcggtatttt ctccttacgc atctgtgcgg tatttcacac cgcaatggtg cactctcagt
      841 acaatctgct ctgatgccgc atagttaagc cagtatacac tccgctatcg ctacgtgact
      901 gggtcatggc tgcgccccga cacccgccaa cacccgctga cgcgccctga cgggcttgtc
      961 tgctcccggc atccgcttac agacaagctg tgaccgtctc cgggagctgc atgtgtcaga
     1021 ggttttcacc gtcatcaccg aaacgcgcga ggcagctgcg gtaaagctca tcagcgtggt
     1081 cgtgaagcga ttcacagatg tctgcctgtt catccgcgtc cagctcgttg agtttctcca
     1141 gaagcgttaa tgtctggctt ctgataaagc gggccatgtt aagggcggtt ttttcctgtt
     1201 tggtcactga tgcctccgtg taagggggat ttctgttcat gggggtaatg ataccgatga
     1261 aacgagagag gatgctcacg atacgggtta ctgatgatga acatgcccgg ttactggaac
     1321 gttgtgaggg taaacaactg gcggtatgga tgcggcggga ccagagaaaa atcactcagg
     1381 gtcaatgcca gcgcttcgtt aatacagatg taggtgttcc acagggtagc cagcagcatc
     1441 ctgcgatgca gatccggaac ataatggtgc agggcgctga cttccgcgtt tccagacttt
     1501 acgaaacacg gaaaccgaag accattcatg ttgttgctca ggtcgcagac gttttgcagc
     1561 agcagtcgct tcacgttcgc tcgcgtatcg gtgattcatt ctgctaacca gtaaggcaac
     1621 cccgccagcc tagccgggtc ctcaacgaca ggagcacgat catgcgcacc cgtggggccg
     1681 ccatgccggc gataatggcc tgcttctcgc cgaaacgttt ggtggcggga ccagtgacga
     1741 aggcttgagc gagggcgtgc aagattccga ataccgcaag cgacaggccg atcatcgtcg
     1801 cgctccagcg aaagcggtcc tcgccgaaaa tgacccagag cgctgccggc acctgtccta
     1861 cgagttgcat gataaagaag acagtcataa gtgcggcgac gatagtcatg ccccgcgccc
     1921 accggaagga gctgactggg ttgaaggctc tcaagggcat cggtcgagat cccggtgcct
     1981 aatgagtgag ctaacttaca ttaattgcgt tgcgctcact gcccgctttc cagtcgggaa
     2041 acctgtcgtg ccagctgcat taatgaatcg gccaacgcgc ggggagaggc ggtttgcgta
     2101 ttgggcgcca gggtggtttt tcttttcacc agtgagacgg gcaacagctg attgcccttc
     2161 accgcctggc cctgagagag ttgcagcaag cggtccacgc tggtttgccc cagcaggcga
     2221 aaatcctgtt tgatggtggt taacggcggg atataacatg agctgtcttc ggtatcgtcg
     2281 tatcccacta ccgagatgtc cgcaccaacg cgcagcccgg actcggtaat ggcgcgcatt
     2341 gcgcccagcg ccatctgatc gttggcaacc agcatcgcag tgggaacgat gccctcattc
     2401 agcatttgca tggtttgttg aaaaccggac atggcactcc agtcgccttc ccgttccgct
     2461 atcggctgaa tttgattgcg agtgagatat ttatgccagc cagccagacg cagacgcgcc
     2521 gagacagaac ttaatgggcc cgctaacagc gcgatttgct ggtgacccaa tgcgaccaga
     2581 tgctccacgc ccagtcgcgt accgtcttca tgggagaaaa taatactgtt gatgggtgtc
     2641 tggtcagaga catcaagaaa taacgccgga acattagtgc aggcagcttc cacagcaatg
     2701 gcatcctggt catccagcgg atagttaatg atcagcccac tgacgcgttg cgcgagaaga
     2761 ttgtgcaccg ccgctttaca ggcttcgacg ccgcttcgtt ctaccatcga caccaccacg
     2821 ctggcaccca gttgatcggc gcgagattta atcgccgcga caatttgcga cggcgcgtgc
     2881 agggccagac tggaggtggc aacgccaatc agcaacgact gtttgcccgc cagttgttgt
     2941 gccacgcggt tgggaatgta attcagctcc gccatcgccg cttccacttt ttcccgcgtt
     3001 ttcgcagaaa cgtggctggc ctggttcacc acgcgggaaa cggtctgata agagacaccg
     3061 gcatactctg cgacatcgta taacgttact ggtttcacat tcaccaccct gaattgactc
     3121 tcttccgggc gctatcatgc cataccgcga aaggttttgc gccattcgat ggtgtccggg
     3181 atctcgacgc tctcccttat gcgactcctg cattaggaag cagcccagta gtaggttgag
     3241 gccgttgagc accgccgccg caaggaatgg tgcatgcaag gagatggcgc ccaacagtcc
     3301 cccggccacg gggcctgcca ccatacccac gccgaaacaa gcgctcatga gcccgaagtg
     3361 gcgagcccga tcttccccat cggtgatgtc ggcgatatag gcgccagcaa ccgcacctgt
     3421 ggcgccggtg atgccggcca cgatgcgtcc ggcgtagagg atcgagatcg atctcgatcc
     3481 cgcgaaatta atacgactca ctatagggga attgtgagcg gataacaatt cccctctaga
     3541 aataattttg tttaacttta agaaggagat atacatatgc accatcatca tcatcattct
     3601 tctggtctgg tgccacgcgg ttctggtatg aaagaaaccg ctgctgctaa attcgaacgc
     3661 cagcacatgg acagcccaga tctgggtacc gacgacgacg acaaggccat ggctgatatc
     3721 ggatccatga acagcaataa agagttaatg cagcgccgca gtcaggcgat tccccgtggt
     3781 gttgggcaaa ttcacccgat tttcgctgac cgcgcggaaa actgccgggt gtgggacgtt
     3841 gaaggccgtg agtatcttga tttcgcgggc gggattgcgg tgctcaatac cgggcacttg
     3901 catccgaaag tggtggctgc ggtggaagcg cagttgaaaa aactgtcgca cacctgcttc
     3961 caggtgctgg cctacgagcc gtatctggag ctgtgcgaga ttatgaatca gaaggtgccg
     4021 ggcgatttcg ccaagaaaac gctgctggtt acgaccggtt ccgaagcggt ggaaaacgcg
     4081 gtaaaaatcg cccgcgccgc caccaaacgt agcggcacca tcgcttttag cggcgcgtat
     4141 cacgggcgca cgcattacac gctggcgctg accggcaagg tgaatccgta ctctgcgggc
     4201 atggggctga tgccgggtca tgtttatcgc gcgctttatc cttgcccgct gcacggcata
     4261 agcgaggatg acgctatcgc cagcatccac cggatcttca aaaatgatgc cgcgccggaa
     4321 gatatcgccg ccatcgtgat tgagccggtt cagggcgaag gcggtttcta cgccgcgtcg
     4381 ccagccttta tgcagcgttt acgcgcgctg tgtgacgagc acgggatcat gctgattgcc
     4441 gatgaagtgc agagcggcgc ggggcgtacc ggcacgctgt ttgcgatgga gcagatgggc
     4501 gttgcgccgg atctcaccac ctttgcgaaa tcgatcgcgg gcggcttccc gctggcgggc
     4561 gtcaccgggc gcgcggaagt gatggatgcc gtcgctccag gtggtctggg cggcacctat
     4621 gccggtaacc cgattgcctg cgtggcggcg ctggaagtgt tgaaggtgtt tgagcaggaa
     4681 aatctgctgc aaaaagccaa cgatctgggg cagaagctaa aagacggatt gttagcgata
     4741 gccgaaaaac acccggagat cggcgacgta cgcgggctgg gagcgatgat cgccatcgag
     4801 ctgtttgaag atggcgatca cagcaaaccg gacgcaaaac tcaccgccgg gatcgtggcg
     4861 cgcgcccgcg ataaaggcct gattcttctc tcctgcggcc cgtattacaa cgtgctgcgc
     4921 atccttgtac cgctcaccat tgaagacgct cagatccgtc agggtctgga gatcatcagc
     4981 cagtgttttg ctgaggcgaa gcagtaggtc gacaagcttg cggccgcact cgagcaccac
     5041 caccaccacc actgagatcc ggctgctaac aaagcccgaa aggaagctga gttggctgct
     5101 gccaccgctg agcaataact agcataaccc cttggggcct ctaaacgggt cttgaggggt
     5161 tttttgctga aaggaggaac tatatccgga ttggcgaatg ggacgcgccc tgtagcggcg
     5221 cattaagcgc ggcgggtgtg gtggttacgc gcagcgtgac cgctacactt gccagcgccc
     5281 tagcgcccgc tcctttcgct ttcttccctt cctttctcgc cacgttcgcc ggctttcccc
     5341 gtcaagctct aaatcggggg ctccctttag ggttccgatt tagtgcttta cggcacctcg
     5401 accccaaaaa acttgattag ggtgatggtt cacgtagtgg gccatcgccc tgatagacgg
     5461 tttttcgccc tttgacgttg gagtccacgt tctttaatag tggactcttg ttccaaactg
     5521 gaacaacact caaccctatc tcggtctatt cttttgattt ataagggatt ttgccgattt
     5581 cggcctattg gttaaaaaat gagctgattt aacaaaaatt taacgcgaat tttaacaaaa
     5641 tattaacgct tacaatttag gtggcacttt tcggggaaat gtgcgcggaa cccctatttg
     5701 tttatttttc taaatacatt caaatatgta tccgctcatg aattaattct tagaaaaact
     5761 catcgagcat caaatgaaac tgcaatttat tcatatcagg attatcaata ccatattttt
     5821 gaaaaagccg tttctgtaat gaaggagaaa actcaccgag gcagttccat aggatggcaa
     5881 gatcctggta tcggtctgcg attccgactc gtccaacatc aatacaacct attaatttcc
     5941 cctcgtcaaa aataaggtta tcaagtgaga aatcaccatg agtgacgact gaatccggtg
     6001 agaatggcaa aagtttatgc atttctttcc agacttgttc aacaggccag ccattacgct
     6061 cgtcatcaaa atcactcgca tcaaccaaac cgttattcat tcgtgattgc gcctgagcga
     6121 gacgaaatac gcgatcgctg ttaaaaggac aattacaaac aggaatcgaa tgcaaccggc
     6181 gcaggaacac tgccagcgca tcaacaatat tttcacctga atcaggatat tcttctaata
     6241 cctggaatgc tgttttcccg gggatcgcag tggtgagtaa ccatgcatca tcaggagtac
     6301 ggataaaatg cttgatggtc ggaagaggca taaattccgt cagccagttt agtctgacca
     6361 tctcatctgt aacatcattg gcaacgctac ctttgccatg tttcagaaac aactctggcg
     6421 catcgggctt cccatacaat cgatagattg tcgcacctga ttgcccgaca ttatcgcgag
     6481 cccatttata cccatataaa tcagcatcca tgttggaatt taatcgcggc ctagagcaag
     6541 acgtttcccg ttgaatatgg ctcataacac cccttgtatt actgtttatg taagcagaca
     6601 gttttattgt tcatgaccaa aatcccttaa cgtgagtttt cgttccactg agcgtcagac
     6661 cccgtagaaa agatcaaagg atcttc
//
