LOCUS       Exported                4414 bp ds-DNA    circular SYN 17-1-2014
DEFINITION  Bacterial vector for inducible expression of N-terminally 
            6xHis-tagged proteins. For other reading frames, use pTrcHis B or 
            pTrcHis C.
ACCESSION   .
VERSION     .
KEYWORDS    pTrcHis A
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 4414)
  AUTHORS   Invitrogen (Life Technologies)
  TITLE     Direct Submission
FEATURES             Location/Qualifiers
     source          1..4414
                     /organism="synthetic DNA construct"
                     /lab_host="Escherichia coli"
                     /mol_type="other DNA"
     misc_feature    193..222
                     /note="trc promoter"
                     /note="strong E. coli promoter; hybrid between the trp and 
                     lac UV5 promoters"
     protein_bind    230..246
                     /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)."
     misc_feature    263..332
                     /note="rrnG antiterminator"
                     /note="antiterminator from the E. coli rrnG leader region 
                     (Berg et al., 1989)"
     misc_feature    346..354
                     /note="gene 10 translational enhancer"
                     /note="translational enhancer from gene 10 of bacteriophage
                     T7 (Olins and Rangwala, 1989)"
     RBS             369..373
                     /note="ribosome binding site"
     CDS             383..409
                     /codon_start=1
                     /product="synthetic cistron containing a ribosome binding 
                     site (Shine-Dalgarno sequence), for enhancing the bacterial
                     expression of a downstream cistron (Schoner, 1997)"
                     /note="minicistron"
                     /note="This first cistron should terminate 3 bp upstream of
                     the ATG for the second cistron."
                     /translation="MYRLNKEE"
     CDS             413..415
                     /codon_start=1
                     /product="start codon"
                     /note="ATG"
                     /translation="M"
     CDS             425..442
                     /codon_start=1
                     /product="6xHis affinity tag"
                     /note="6xHis"
                     /translation="HHHHHH"
     CDS             446..478
                     /codon_start=1
                     /product="leader peptide from bacteriophage T7 gene 10"
                     /note="T7 tag (gene 10 leader)"
                     /note="promotes efficient translation in E. coli"
                     /translation="MASMTGGQQMG"
     CDS             482..505
                     /codon_start=1
                     /product="Xpress(TM) epitope tag, including an enterokinase
                     recognition and cleavage site"
                     /note="Xpress(TM) tag"
                     /translation="DLYDDDDK"
     misc_feature    515..564
                     /note="MCS"
                     /note="multiple cloning site"
     terminator      767..853
                     /gene="Escherichia coli rrnB"
                     /note="rrnB T1 terminator"
                     /note="transcription terminator T1 from the E. coli rrnB 
                     gene"
     terminator      945..972
                     /note="rrnB T2 terminator"
                     /note="transcription terminator T2 from the E. coli rrnB 
                     gene"
     promoter        992..1083
                     /gene="bla"
                     /note="AmpR promoter"
     CDS             1084..1944
                     /codon_start=1
                     /gene="bla"
                     /product="beta-lactamase"
                     /note="AmpR"
                     /note="confers resistance to ampicillin, carbenicillin, and
                     related antibiotics"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGYI
                     ELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRVDAGQEQLGRRIHYSQNDLVEYS
                     PVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRLDRW
                     EPELNEAIPNDERDTTMPVAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPLLRSA
                     LPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIAEIGAS
                     LIKHW"
     rep_origin      2115..2703
                     /direction=RIGHT
                     /note="ori"
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     promoter        3215..3292
                     /gene="lacI (mutant)"
                     /note="lacIq promoter"
                     /note="In the lacIq allele, a single base change in the 
                     promoter boosts expression of the lacI gene about 10-fold."
     CDS             3293..4375
                     /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
                     YIPPSTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLPVSLVKRKTTLAPNTQTASPR
                     ALADSLMQLARQVSRLESGQ"