pMal-c5X Search name
pMal-c5X,Plasmid pMal-c5X,pMal-c5X vector
pMal-c5X Informaiton
Promoter: Tac
Replicon: ColE1 ori
Terminator: rrnB T1 Terminator
Plasmid classification: Escherichia coli vector; pMal series expression plasmid
Plasmid size: 5677bp
Prokaryotic resistance: ampicillin Amp
Clone strain: Escherichia coli DH5 alpha
Culture conditions: 37 C, aerobic, LB
Expression vector: Escherichia coli BL21 (DE3)
Culture conditions: 37 C, aerobic, LB
Induction: IPTG or lactose
pMal-c5X Description
The vector pMAL-c5X is designed to produce maltose-binding protein (MBP) fusions, where the protein of interest can be cleaved from MBP with the specific protease Factor Xa . MBP fusions made with this vector are expressed cytoplasmically. The MBP has been engineered for tighter binding to amylose resin. A gene or open reading frame is inserted into a restriction site of the vector polylinker, in the same translational reading frame as the malE gene (encoding maltose-binding protein). The fusion protein thus produced can be purified by amylose affinity chromatography. The sequence coding for the four amino acids Ile-Glu-Gly-Arg is present just upstream of the XmnI site. This allows the protein of interest to be cleaved from maltose-binding protein with the specific protease Factor Xa. Fragments inserted in the XmnI site (cleaves GAAGG↓ATTTC) will produce a fusion protein that, after Factor Xa cleavage, contains no vector-derived residues on the protein of interest.
pMal-c5X Multiple cloning site
pMal-c5X Sequence
LOCUS Exported 5677 bp ds-DNA circular SYN 17-08-2015
DEFINITION synthetic circular DNA
KEYWORDS pMal-c5X
SOURCE synthetic DNA construct
ORGANISM synthetic DNA construct
REFERENCE 1 (bases 1 to 5677)
TITLE Direct Submission
FEATURES Location/Qualifiers
source 1..5677
/organism="synthetic DNA construct"
/mol_type="other DNA"
promoter 3..80
/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 81..1163
/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"
misc_feature 1406..1434
/note="tac promoter"
/note="strong E. coli promoter; hybrid between the trp and
lac UV5 promoters"
protein_bind 1442..1458
/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)."
CDS 1528..2628
/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="MKIEEGKLVIWINGDKGYNGLAEVGKKFEKDTGIKVTVEHPDKLE
EKFPQVAATGDGPDIIFWAHDRFGGYAQSGLLAEITPDKAFQDKLYPFTWDAVRYNGKL
IAYPIAVEALSLIYNKDLLPNPPKTWEEIPALDKELKAKGKSALMFNLQEPYFTWPLIA
ADGGYAFKYENGKYDIKDVGVDNAGAKAGLTFLVDLIKNKHMNADTDYSIAEAAFNKGE
TAMTINGPWAWSNIDTSKVNYGVTVLPTFKGQPSKPFVGVLSAGINAASPNKELAKEFL
ENYLLTDEGLEAVNKDKPLGAVALKSYEEELVKDPRIAATMENAQKGEIMPNIPQMSAF
WYAVRTAVINAASGRQTVDEALKDAQT"
CDS 2677..2688
/codon_start=1
/product="Factor Xa recognition and cleavage site"
/note="Factor Xa site"
/translation="IEGR"
terminator 2763..2849
/gene="Escherichia coli rrnB"
/note="rrnB T1 terminator"
/note="transcription terminator T1 from the E. coli rrnB
gene"
terminator 2941..2968
/note="rrnB T2 terminator"
/note="transcription terminator T2 from the E. coli rrnB
gene"
promoter 2996..3086
/gene="bla"
/note="AmpR promoter"
CDS 3087..3947
/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 4035..4623
/direction=RIGHT
/note="ori"
/note="high-copy-number ColE1/pMB1/pBR322/pUC origin of
replication"
CDS complement(4993..5184)
/codon_start=1
/gene="rop"
/product="Rop protein, which maintains plasmids at low copy
温馨提示:不可用于临床ZL。