LOCUS       sequence-84860-e        6886 bp    DNA     circular SYN 15-DEC-2025
DEFINITION  Solubly expresses monomeric streptavidin containing S25H mutation in
            E. coli as an MBP fusion. App Microbiol.
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 6886)
  AUTHORS   Demonte D, Dundas CM, Park S
  TITLE     Expression and purification of soluble monomeric streptavidin in 
            Escherichia coli.
  JOURNAL   Appl Microbiol Biotechnol. 2014;98(14):6285-95. doi: 
            10.1007/s00253-014-5682-y. Epub 2014 Apr 2.
  PUBMED    24691867
REFERENCE   2  (bases 1 to 6886)
  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: "Appl 
            Microbiol Biotechnol."; date: "2014"; volume: "98(14):6285-95. doi";
            pages: " 10.1007/s00253-014-5682-y. Epub 2014 Apr 2"
COMMENT     Sequence Label: pET-MBP-mSA2
FEATURES             Location/Qualifiers
     source          1..6886
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     rep_origin      12..467
                     /direction=RIGHT
                     /label=f1 ori
                     /note="f1 bacteriophage origin of replication; arrow 
                     indicates direction of (+) strand synthesis"
     primer_bind     complement(99..118)
                     /label=F1ori-R
                     /note="F1 origin, reverse primer"
     primer_bind     309..330
                     /label=F1ori-F
                     /note="F1 origin, forward primer"
     CDS             complement(560..1375)
                     /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(560..1375)
                     /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     1283..1302
                     /label=Kan-R
                     /note="Kanamycin resistance gene, reverse primer"
     primer_bind     1367..1386
                     /label=pENTR-R
                     /note="pENTR vectors, reverse primer"
     rep_origin      1497..2085
                     /direction=RIGHT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     primer_bind     1986..2005
                     /label=pBR322ori-F
                     /note="pBR322 origin, forward primer"
     primer_bind     2239..2256
                     /label=L4440
                     /note="L4440 vector, forward primer"
     misc_feature    2271..2413
                     /label=bom
                     /note="basis of mobility region from pBR322"
     primer_bind     complement(2339..2358)
                     /label=pRS-marker
                     /note="pRS vectors, use to sequence yeast selectable 
                     marker"
     primer_bind     2499..2521
                     /label=pGEX 3'
                     /note="pGEX vectors, reverse primer"
     CDS             complement(2515..2706)
                     /codon_start=1
                     /gene="rop"
                     /product="Rop protein, which maintains plasmids at low copy
                     number"
                     /label=rop
                     /translation="MTKQEKTALNMARFIRSQTLTLLEKLNELDADEQADICESLHDHA
                     DELYRSCLARFGDDGENL"
     CDS             complement(3515..4597)
                     /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     4559..4578
                     /label=LacI-R
                     /note="LacI, reverse primer"
     promoter        complement(4598..4675)
                     /gene="lacI"
                     /label=lacI promoter
     primer_bind     4881..4900
                     /label=pBRrevBam
                     /note="pBR322 vectors, tet region, downstream of BamHI, 
                     reverse primer"
     primer_bind     4984..5003
                     /label=T7
                     /note="T7 promoter, forward primer"
     promoter        4984..5002
                     /label=T7 promoter
                     /note="promoter for bacteriophage T7 RNA polymerase"
     protein_bind    5003..5027
                     /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             5042..5064
                     /note="efficient ribosome binding site from bacteriophage 
                     T7 gene 10 (Olins and Rangwala, 1989)"
     CDS             5083..5100
                     /codon_start=1
                     /product="6xHis affinity tag"
                     /label=6xHis
                     /translation="HHHHHH"
     CDS             5110..5127
                     /codon_start=1
                     /product="thrombin recognition and cleavage site"
                     /label=thrombin site
                     /translation="LVPRGS"
     CDS             5131..6231
                     /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
                     ENYLLTDEGLEAVNKDKPLGAVALKSYEEELAKDPRIAATMENAQKGEIMPNIPQMSAF
                     WYAVRTAVINAASGRQTVDEALKDAQT"
     regulatory      6088..6097
                     /label=Kozak sequence
                     /note="vertebrate consensus sequence for strong initiation 
                     of translation (Kozak, 1987)"
                     /regulatory_class="other"
     primer_bind     6205..6228
                     /label=MBP-F
                     /note="Maltose binding protein, forward primer"
     CDS             6280..6291
                     /codon_start=1
                     /product="Factor Xa recognition and cleavage site"
                     /label=Factor Xa site
                     /translation="IEGR"
     CDS             6313..6333
                     /codon_start=1
                     /product="tobacco etch virus (TEV) protease recognition and
                     cleavage site"
                     /label=TEV site
                     /translation="ENLYFQG"
     CDS             6334..6675
                     /codon_start=1
                     /product="monomeric streptavidin/rhizavidin hybrid (Lim et 
                     al., 2013)"
                     /label=mSA
                     /translation="AEAGITGTWYNQHGSTFTVTAGADGNLTGQYENRAQGTGCQNSPY
                     TLTGRYNGTKLEWRVEWNNSTENCHSRTEWRGQYQGGAEARINTQWNLTYEGGSGPATE
                     QGQDTFTKVK"
     CDS             6697..6720
                     /codon_start=1
                     /product="FLAG(R) epitope tag, followed by an enterokinase 
                     cleavage site"
                     /label=FLAG
                     /translation="DYKDDDDK"
     CDS             6730..6747
                     /codon_start=1
                     /product="6xHis affinity tag"
                     /label=6xHis
                     /translation="HHHHHH"
     primer_bind     complement(6800..6818)
                     /label=T7 Term
                     /note="T7 terminator, reverse primer"
     terminator      6814..6861
                     /label=T7 terminator
                     /note="transcription terminator for bacteriophage T7 RNA 
                     polymerase"
ORIGIN
        1 tggcgaatgg gacgcgccct gtagcggcgc attaagcgcg gcgggtgtgg tggttacgcg
       61 cagcgtgacc gctacacttg ccagcgccct agcgcccgct cctttcgctt tcttcccttc
      121 ctttctcgcc acgttcgccg gctttccccg tcaagctcta aatcgggggc tccctttagg
      181 gttccgattt agtgctttac ggcacctcga ccccaaaaaa cttgattagg gtgatggttc
      241 acgtagtggg ccatcgccct gatagacggt ttttcgccct ttgacgttgg agtccacgtt
      301 ctttaatagt ggactcttgt tccaaactgg aacaacactc aaccctatct cggtctattc
      361 ttttgattta taagggattt tgccgatttc ggcctattgg ttaaaaaatg agctgattta
      421 acaaaaattt aacgcgaatt ttaacaaaat attaacgttt acaatttcag gtggcacttt
      481 tcggggaaat gtgcgcggaa cccctatttg tttatttttc taaatacatt caaatatgta
      541 tccgctcatg aattaattct tagaaaaact catcgagcat caaatgaaac tgcaatttat
      601 tcatatcagg attatcaata ccatattttt gaaaaagccg tttctgtaat gaaggagaaa
      661 actcaccgag gcagttccat aggatggcaa gatcctggta tcggtctgcg attccgactc
      721 gtccaacatc aatacaacct attaatttcc cctcgtcaaa aataaggtta tcaagtgaga
      781 aatcaccatg agtgacgact gaatccggtg agaatggcaa aagtttatgc atttctttcc
      841 agacttgttc aacaggccag ccattacgct cgtcatcaaa atcactcgca tcaaccaaac
      901 cgttattcat tcgtgattgc gcctgagcga gacgaaatac gcgatcgctg ttaaaaggac
      961 aattacaaac aggaatcgaa tgcaaccggc gcaggaacac tgccagcgca tcaacaatat
     1021 tttcacctga atcaggatat tcttctaata cctggaatgc tgttttcccg gggatcgcag
     1081 tggtgagtaa ccatgcatca tcaggagtac ggataaaatg cttgatggtc ggaagaggca
     1141 taaattccgt cagccagttt agtctgacca tctcatctgt aacatcattg gcaacgctac
     1201 ctttgccatg tttcagaaac aactctggcg catcgggctt cccatacaat cgatagattg
     1261 tcgcacctga ttgcccgaca ttatcgcgag cccatttata cccatataaa tcagcatcca
     1321 tgttggaatt taatcgcggc ctagagcaag acgtttcccg ttgaatatgg ctcataacac
     1381 cccttgtatt actgtttatg taagcagaca gttttattgt tcatgaccaa aatcccttaa
     1441 cgtgagtttt cgttccactg agcgtcagac cccgtagaaa agatcaaagg atcttcttga
     1501 gatccttttt ttctgcgcgt aatctgctgc ttgcaaacaa aaaaaccacc gctaccagcg
     1561 gtggtttgtt tgccggatca agagctacca actctttttc cgaaggtaac tggcttcagc
     1621 agagcgcaga taccaaatac tgtccttcta gtgtagccgt agttaggcca ccacttcaag
     1681 aactctgtag caccgcctac atacctcgct ctgctaatcc tgttaccagt ggctgctgcc
     1741 agtggcgata agtcgtgtct taccgggttg gactcaagac gatagttacc ggataaggcg
     1801 cagcggtcgg gctgaacggg gggttcgtgc acacagccca gcttggagcg aacgacctac
     1861 accgaactga gatacctaca gcgtgagcta tgagaaagcg ccacgcttcc cgaagggaga
     1921 aaggcggaca ggtatccggt aagcggcagg gtcggaacag gagagcgcac gagggagctt
     1981 ccagggggaa acgcctggta tctttatagt cctgtcgggt ttcgccacct ctgacttgag
     2041 cgtcgatttt tgtgatgctc gtcagggggg cggagcctat ggaaaaacgc cagcaacgcg
     2101 gcctttttac ggttcctggc cttttgctgg ccttttgctc acatgttctt tcctgcgtta
     2161 tcccctgatt ctgtggataa ccgtattacc gcctttgagt gagctgatac cgctcgccgc
     2221 agccgaacga ccgagcgcag cgagtcagtg agcgaggaag cggaagagcg cctgatgcgg
     2281 tattttctcc ttacgcatct gtgcggtatt tcacaccgca tatatggtgc actctcagta
     2341 caatctgctc tgatgccgca tagttaagcc agtatacact ccgctatcgc tacgtgactg
     2401 ggtcatggct gcgccccgac acccgccaac acccgctgac gcgccctgac gggcttgtct
     2461 gctcccggca tccgcttaca gacaagctgt gaccgtctcc gggagctgca tgtgtcagag
     2521 gttttcaccg tcatcaccga aacgcgcgag gcagctgcgg taaagctcat cagcgtggtc
     2581 gtgaagcgat tcacagatgt ctgcctgttc atccgcgtcc agctcgttga gtttctccag
     2641 aagcgttaat gtctggcttc tgataaagcg ggccatgtta agggcggttt tttcctgttt
     2701 ggtcactgat gcctccgtgt aagggggatt tctgttcatg ggggtaatga taccgatgaa
     2761 acgagagagg atgctcacga tacgggttac tgatgatgaa catgcccggt tactggaacg
     2821 ttgtgagggt aaacaactgg cggtatggat gcggcgggac cagagaaaaa tcactcaggg
     2881 tcaatgccag cgcttcgtta atacagatgt aggtgttcca cagggtagcc agcagcatcc
     2941 tgcgatgcag atccggaaca taatggtgca gggcgctgac ttccgcgttt ccagacttta
     3001 cgaaacacgg aaaccgaaga ccattcatgt tgttgctcag gtcgcagacg ttttgcagca
     3061 gcagtcgctt cacgttcgct cgcgtatcgg tgattcattc tgctaaccag taaggcaacc
     3121 ccgccagcct agccgggtcc tcaacgacag gagcacgatc atgcgcaccc gtggggccgc
     3181 catgccggcg ataatggcct gcttctcgcc gaaacgtttg gtggcgggac cagtgacgaa
     3241 ggcttgagcg agggcgtgca agattccgaa taccgcaagc gacaggccga tcatcgtcgc
     3301 gctccagcga aagcggtcct cgccgaaaat gacccagagc gctgccggca cctgtcctac
     3361 gagttgcatg ataaagaaga cagtcataag tgcggcgacg atagtcatgc cccgcgccca
     3421 ccggaaggag ctgactgggt tgaaggctct caagggcatc ggtcgagatc ccggtgccta
     3481 atgagtgagc taacttacat taattgcgtt gcgctcactg cccgctttcc agtcgggaaa
     3541 cctgtcgtgc cagctgcatt aatgaatcgg ccaacgcgcg gggagaggcg gtttgcgtat
     3601 tgggcgccag ggtggttttt cttttcacca gtgagacggg caacagctga ttgcccttca
     3661 ccgcctggcc ctgagagagt tgcagcaagc ggtccacgct ggtttgcccc agcaggcgaa
     3721 aatcctgttt gatggtggtt aacggcggga tataacatga gctgtcttcg gtatcgtcgt
     3781 atcccactac cgagatatcc gcaccaacgc gcagcccgga ctcggtaatg gcgcgcattg
     3841 cgcccagcgc catctgatcg ttggcaacca gcatcgcagt gggaacgatg ccctcattca
     3901 gcatttgcat ggtttgttga aaaccggaca tggcactcca gtcgccttcc cgttccgcta
     3961 tcggctgaat ttgattgcga gtgagatatt tatgccagcc agccagacgc agacgcgccg
     4021 agacagaact taatgggccc gctaacagcg cgatttgctg gtgacccaat gcgaccagat
     4081 gctccacgcc cagtcgcgta ccgtcttcat gggagaaaat aatactgttg atgggtgtct
     4141 ggtcagagac atcaagaaat aacgccggaa cattagtgca ggcagcttcc acagcaatgg
     4201 catcctggtc atccagcgga tagttaatga tcagcccact gacgcgttgc gcgagaagat
     4261 tgtgcaccgc cgctttacag gcttcgacgc cgcttcgttc taccatcgac accaccacgc
     4321 tggcacccag ttgatcggcg cgagatttaa tcgccgcgac aatttgcgac ggcgcgtgca
     4381 gggccagact ggaggtggca acgccaatca gcaacgactg tttgcccgcc agttgttgtg
     4441 ccacgcggtt gggaatgtaa ttcagctccg ccatcgccgc ttccactttt tcccgcgttt
     4501 tcgcagaaac gtggctggcc tggttcacca cgcgggaaac ggtctgataa gagacaccgg
     4561 catactctgc gacatcgtat aacgttactg gtttcacatt caccaccctg aattgactct
     4621 cttccgggcg ctatcatgcc ataccgcgaa aggttttgcg ccattcgatg gtgtccggga
     4681 tctcgacgct ctcccttatg cgactcctgc attaggaagc agcccagtag taggttgagg
     4741 ccgttgagca ccgccgccgc aaggaatggt gcatgcaagg agatggcgcc caacagtccc
     4801 ccggccacgg ggcctgccac catacccacg ccgaaacaag cgctcatgag cccgaagtgg
     4861 cgagcccgat cttccccatc ggtgatgtcg gcgatatagg cgccagcaac cgcacctgtg
     4921 gcgccggtga tgccggccac gatgcgtccg gcgtagagga tcgagatctc gatcccgcga
     4981 aattaatacg actcactata ggggaattgt gagcggataa caattcccct ctagaaataa
     5041 ttttgtttaa ctttaagaag gagatatacc atgggcagca gccatcatca tcatcatcac
     5101 agcagcggcc tggtgccgcg cggcagccat atgaaaatcg aagaaggtaa actggtaatc
     5161 tggattaacg gcgataaagg ctataacggt ctcgctgaag tcggtaagaa attcgagaaa
     5221 gataccggaa ttaaagtcac cgttgagcat ccggataaac tggaagagaa attcccacag
     5281 gttgcggcaa ctggcgatgg ccctgacatt atcttctggg cacacgaccg ctttggtggc
     5341 tacgctcaat ctggcctgtt ggctgaaatc accccggaca aagcgttcca ggacaagctg
     5401 tatccgttta cctgggatgc cgtacgttac aacggcaagc tgattgctta cccgatcgct
     5461 gttgaagcgt tatcgctgat ttataacaaa gatctgctgc cgaacccgcc aaaaacctgg
     5521 gaagagatcc cggcgctgga taaagaactg aaagcgaaag gtaagagcgc gctgatgttc
     5581 aacctgcaag aaccgtactt cacctggccg ctgattgctg ctgacggggg ttatgcgttc
     5641 aagtatgaaa acggcaagta cgacattaaa gacgtgggcg tggataacgc tggcgcgaaa
     5701 gcgggtctga ccttcctggt tgacctgatt aaaaacaaac acatgaatgc agacaccgat
     5761 tactccatcg cagaagctgc ctttaataaa ggcgaaacag cgatgaccat caacggcccg
     5821 tgggcatggt ccaacatcga caccagcaaa gtgaattatg gtgtaacggt actgccgacc
     5881 ttcaagggtc aaccatccaa accgttcgtt ggcgtgctga gcgcaggtat taacgccgcc
     5941 agtccgaaca aagagctggc aaaagagttc ctcgaaaact atctgctgac tgatgaaggt
     6001 ctggaagcgg ttaataaaga caaaccgctg ggtgccgtag cgctgaagtc ttacgaggaa
     6061 gagttggcga aagatccacg tattgccgcc accatggaaa acgcccagaa aggtgaaatc
     6121 atgccgaaca tcccgcagat gtccgctttc tggtatgccg tgcgtactgc ggtgatcaac
     6181 gccgccagcg gtcgtcagac tgtcgatgaa gccctgaaag acgcgcagac taattcgagc
     6241 tcgaacaaca acaacaataa caataacaac aacctcggga tcgagggaag gggaggatcc
     6301 gaattcgcta gcgagaacct gtatttccag ggcgcggaag cgggtatcac cggcacgtgg
     6361 tacaaccagc atggttctac cttcaccgtt accgcgggtg cggacggtaa cctgaccggt
     6421 cagtacgaaa accgtgcgca gggcactggt tgccagaact ctccgtacac cctgaccggt
     6481 cgttacaacg gtaccaaact ggaatggcgt gttgaatgga acaactctac cgaaaactgc
     6541 cactctcgta ccgaatggcg tggtcagtac cagggtggtg cggaagcgcg tatcaacacc
     6601 cagtggaacc tgacctacga aggtggttct ggtccggcga ccgaacaggg tcaggacacc
     6661 ttcaccaaag ttaaaccgtc tgcggcgtct ggatccgact acaaggacga tgacgacaag
     6721 taactcgagc accaccacca ccaccactga gatccggctg ctaacaaagc ccgaaaggaa
     6781 gctgagttgg ctgctgccac cgctgagcaa taactagcat aaccccttgg ggcctctaaa
     6841 cgggtcttga ggggtttttt gctgaaagga ggaactatat ccggat
//
