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pTYB12 vector (V012777#)

Basic Vector Information

pTYB12 is an E. coli cloning and expression vector (7415 bp) used in the IMPACTâ„¢ Protein Purification System which allows the overexpression of a target protein as a fusion to a self-cleavable affinity tag (1,2). It is a N-terminal fusion vector designed for in-frame insertion of a target gene into the polylinker, downstream of the intein tag (the Sce VMA intein/chitin domain, 55 kDa)(3,4). This allows the N-terminus of the target protein to be fused to the intein tag. The self-cleavage activity of the intein allows the release of the target protein from the chitin-bound intein tag, resulting in a single column purification of the target protein. This vector can be used in conjuction with pTYB2 (NEB #N6702S) to test which fusion construction (N-terminal or C-terminal) maximizes the expression and yield of a target protein.

Basic Vector Information
Vector Name pTYB12 Antibiotic Resistance Ampicillin
Length 7415 bp Type E.coli expression plasmid
Copy Number High copy number Promoter T7
Cloning Method Enzyme Cut

pTYB12 vector Vector Map

rrnB T2 terminator bla bla M13 ori ori rop lacI lacI T7 promoter lac operator RBS Sce VMA intein 5' region CBD Sce VMA intein 3' region T7 terminator M13 fwd rrnB T1 terminator

pTYB12 vector Sequence

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Download GeneBank File(.gb)

LOCUS       Exported                7415 bp ds-DNA     circular SYN 18-SEP-2021
DEFINITION  synthetic circular DNA
ACCESSION   .
VERSION     .
KEYWORDS    Untitled 5
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 7415)
  TITLE     Direct Submission
FEATURES             Location/Qualifiers
     source          1..7415
                     /organism="synthetic DNA construct"
                     /mol_type="other DNA"
     terminator      1..28
                     /note="rrnB T2 terminator"
                     /note="transcription terminator T2 from the E. coli rrnB 
                     gene"
     promoter        48..139
                     /gene="bla"
                     /note="AmpR promoter"
     CDS             140..1000
                     /codon_start=1
                     /gene="bla"
                     /product="beta-lactamase"
                     /note="AmpR"
                     /note="confers resistance to ampicillin, carbenicillin, and
                     related antibiotics"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGYI
                     ELDLNSGKILESFRPEERSPMMSTFKVLLCGAVLSRVDAGQEQLGRRIHYSQNDLVEYS
                     PVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRLDRW
                     EPELNEAIPNDERDTTMPVAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPLLRSA
                     LPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIAEIGAS
                     LIKHW"
     rep_origin      complement(1042..1555)
                     /direction=LEFT
                     /note="M13 ori"
                     /note="M13 bacteriophage origin of replication; arrow 
                     indicates direction of (+) strand synthesis"
     rep_origin      1666..2254
                     /direction=RIGHT
                     /note="ori"
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     CDS             complement(2623..2814)
                     /codon_start=1
                     /gene="rop"
                     /product="Rop protein, which maintains plasmids at low copy
                     number"
                     /note="rop"
                     /translation="MTKQEKTALNMARFIRSQTLTLLEKLNELDADEQADICESLHDHA
                     DELYRSCLARFGDDGENL"
     CDS             complement(3371..4453)
                     /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"
     promoter        complement(4454..4531)
                     /gene="lacI"
                     /note="lacI promoter"
     promoter        4840..4858
                     /note="T7 promoter"
                     /note="promoter for bacteriophage T7 RNA polymerase"
     protein_bind    4859..4883
                     /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)."
     RBS             4898..4920
                     /note="efficient ribosome binding site from bacteriophage 
                     T7 gene 10 (Olins and Rangwala, 1989)"
     CDS             4973..5791
                     /codon_start=1
                     /gene="Saccharomyces cerevisiae VMA1"
                     /product="5' region of the intein from the yeast Vma1 
                     subunit of the vacuolar ATPase (Chong et al., 1998)"
                     /note="Sce VMA intein 5' region"
                     /translation="CFAKGTNVLMADGSIECIENIEVGNKVMGKDGRPREVIKLPRGRE
                     TMYSVVQKSQHRAHKSDSSREVPELLKFTCNATHELVVRTPRSVRRLSRTIKGVEYFEV
                     ITFEMGQKKAPDGRIVELVKEVSKSYPISEGPERANELVESYRKASNKAYFEWTIEARD
                     LSLLGSHVRKATYQTYAPILYENDHFFDYMQKSKFHLTIEGPKVLAYLLGLWIGDGLSD
                     RATFSVDSRDTSLMERVTEYAEKLNLCAEYKDRKEPQVAKTVNLYSKVVRG"
     CDS             5798..5950
                     /codon_start=1
                     /gene="Bacillus circulans chiA"
                     /product="chitin binding domain from chitinase A1 (Watanabe
                     et al., 1994)"
                     /note="CBD"
                     /translation="TNPGVSAWQVNTAYTAGQLVTYNGKTYKCLQPHTSLAGWEPSNVP
                     ALWQLQ"
     CDS             5954..6499
                     /codon_start=1
                     /gene="Saccharomyces cerevisiae VMA1"
                     /product="modified 3' region of the intein from the yeast 
                     Vma1 subunit of the vacuolar ATPase (Chong et al., 1998)"
                     /note="Sce VMA intein 3' region"
                     /note="C-terminal cleavage of this intein can be induced by
                     thiols."
                     /translation="GHGGIRNNLNTENPLWDAIVGLGFLKDGVKNIPSFLSTDNIGTRE
                     TFLAGLIDSDGYVTDEHGIKATIKTIHTSVRDGLVSLARSLGLVVSVNAEPAKVDMNVT
                     KHKISYAIYMSGGDVLLNVLSKCAGSKKFRPAPAAAFARECRGFYFELQELKEDDYYGI
                     TLSDDSDHQFLLGSQVVVQ"
     terminator      6638..6685
                     /note="T7 terminator"
                     /note="transcription terminator for bacteriophage T7 RNA 
                     polymerase"
     primer_bind     complement(6873..6889)
                     /note="M13 fwd"
                     /note="common sequencing primer, one of multiple similar 
                     variants"
     terminator      7238..7324
                     /gene="Escherichia coli rrnB"
                     /note="rrnB T1 terminator"
                     /note="transcription terminator T1 from the E. coli rrnB 
                     gene"

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