LOCUS       Exported                8314 bp ds-DNA    circular SYN 12-2-2014
DEFINITION  Bacterial expression vector with a 6xHis-TEV-MBP leader and a SacB 
            negative selection marker, for high-throughput purification of 
            recombinant proteins.
ACCESSION   .
VERSION     .
KEYWORDS    pMCSG30
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 8314)
  AUTHORS   Midwest Center for Structural Genomics
  TITLE     Direct Submission
COMMENT     For ligation-independent cloning (LIC), linearize with SfiI to 
            remove the SacB cassette, and treat with T4 DNA polymerase plus 
            dTTP.
FEATURES             Location/Qualifiers
     source          1..8314
                     /organism="synthetic DNA construct"
                     /lab_host="Escherichia coli"
                     /mol_type="other DNA"
     terminator      26..73
                     /note="T7 terminator"
                     /note="transcription terminator for bacteriophage T7 RNA 
                     polymerase"
     CDS             complement(140..157)
                     /codon_start=1
                     /product="6xHis affinity tag"
                     /note="6xHis"
                     /translation="HHHHHH"
     CDS             complement(255..1676)
                     /codon_start=1
                     /gene="Bacillus subtilis sacB"
                     /product="secreted levansucrase that renders bacterial 
                     growth sensitive to sucrose"
                     /note="SacB"
                     /note="negative selection marker"
                     /protein_id="
                     "
                     /translation="MNIKKFAKQATVLTFTTALLAGGATQAFAKETNQKPYKETYGISH
                     ITRHDMLQIPEQQKNEKYQVPEFDSSTIKNISSAKGLDVWDSWPLQNADGTVANYHGYH
                     IVFALAGDPKNADDTSIYMFYQKVGETSIDSWKNAGRVFKDSDKFDANDSILKDQTQEW
                     SGSATFTSDGKIRLFYTDFSGKHYGKQTLTTAQVNVSASDSSLNINGVEDYKSIFDGDG
                     KTYQNVQQFIDEGNYSSGDNHTLRDPHYVEDKGHKYLVFEANTGTEDGYQGEESLFNKA
                     YYGKSTSFFRQESQKLLQSDKKRTAELANGALGMIELNDDYTLKKVMKPLIASNTVTDE
                     IERANVFKMNGKWYLFTDSRGSKMTIDGITSNDIYMLGYVSNSLTGPYKPLNKTGLVLK
                     MDLDPNDVTFTYSHFAVPQAKGNNVVITSYMTNRGFYADKQSTFAPSFLLNIKGKKTSV
                     VKDSILEQGQLTVNK"
     promoter        complement(1677..2122)
                     /gene="sacR"
                     /note="sacB promoter"
                     /note="sacB promoter and control region"
     CDS             complement(2171..3244)
                     /codon_start=1
                     /gene="malE (mutated)"
                     /product="maltose binding protein from E. coli"
                     /note="MBP"
                     /note="This version of the gene does not encode a signal 
                     sequence, so MBP will remain in the cytosol."
                     /translation="KIEEGKLVIWINGDKGYNGLAEVGKKFEKDTGIKVTVEHPDKLEE
                     KFPQVAATGDGPDIIFWAHDRFGGYAQSGLLAEITPDKAFQDKLYPFTWDAVRYNGKLI
                     AYPIAVEALSLIYNKDLLPNPPKTWEEIPALDKELKAKGKSALMFNLQEPYFTWPLIAA
                     DGGYAFKYENGKYDIKDVGVDNAGAKAGLTFLVDLIKNKHMNADTDYSIAEAAFNKGET
                     AMTINGPWAWSNIDTSKVNYGVTVLPTFKGQPSKPFVGVLSAGINAASPNKELAKEFLE
                     NYLLTDEGLEAVNKDKPLGAVALKSYEEELAKDPRIAATMENAQKGEIMPNIPQMSAFW
                     YAVRTAVINAASGRQTVD"
     CDS             complement(3251..3271)
                     /codon_start=1
                     /product="tobacco etch virus (TEV) protease recognition and
                     cleavage site"
                     /note="TEV site"
                     /translation="ENLYFQS"
     CDS             complement(3296..3313)
                     /codon_start=1
                     /product="6xHis affinity tag"
                     /note="6xHis"
                     /translation="HHHHHH"
     CDS             complement(3314..3316)
                     /codon_start=1
                     /product="start codon"
                     /note="ATG"
                     /translation="M"
     RBS             3325..3330
                     /note="ribosome binding site"
     protein_bind    3361..3385
                     /bound_moiety="lac repressor encoded by lacI"
                     /note="lac operator"
                     /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)."
     promoter        complement(3386..3404)
                     /note="T7 promoter"
                     /note="promoter for bacteriophage T7 RNA polymerase"
     promoter        3717..3794
                     /gene="lacI"
                     /note="lacI promoter"
                     /note="
                     "
     CDS             3795..4877
                     /codon_start=1
                     /gene="lacI"
                     /product="lac repressor"
                     /note="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"
     CDS             5686..5877
                     /codon_start=1
                     /gene="rop"
                     /product="Rop protein, which maintains plasmids at low copy
                     number"
                     /note="rop"
                     /translation="MTKQEKTALNMARFIRSQTLTLLEKLNELDADEQADICESLHDHA
                     DELYRSCLARFGDDGENL"
     rep_origin      complement(6307..6895)
                     /direction=LEFT
                     /note="ori"
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     CDS             complement(7066..7926)
                     /codon_start=1
                     /gene="bla"
                     /product="beta-lactamase"
                     /note="AmpR"
                     /note="confers resistance to ampicillin, carbenicillin, and
                     related antibiotics"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGYI
                     ELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRIDAGQEQLGRRIHYSQNDLVEYS
                     PVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRLDRW
                     EPELNEAIPNDERDTTMPAAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPLLRSA
                     LPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIAEIGAS
                     LIKHW"
     promoter        complement(7927..8030)
                     /gene="bla"
                     /note="AmpR promoter"