pHT43
pHT43
编号 | 载体名称 |
北京华越洋VECT75361 | pHT43 |
pHT43载体基本信息:
载体名称: | pHT43 |
质粒类型: | 枯草芽孢杆菌表达载体 |
高拷贝/低拷贝: | 高拷贝 |
启动子: | Pgrac |
克隆方法: | 多克隆位点,限制性内切酶 |
载体大小: | 8057bp |
5' 测序引物及序列: | LacI-R:GGCATACTCTGCGACATCGT |
3' 测序引物及序列: | -- |
载体标签: | N-amyQ |
载体抗性: | 氨苄和氯霉素 |
筛选标记: | -- |
备注: | pHT43载体通过IPTG诱导,能够高水平分泌表达目的蛋白。 |
稳定性: | 瞬时表达 |
组成型: | 诱导型 |
病毒/非病毒: | 非病毒 |
pHT43载体质粒图谱和多克隆位点信息
pHT43载体简介:
1.简介
革兰氏阳性菌因其在农业,医疗和食品生物技术和重组蛋白生产等方面的贡献而广为人知。在所有革兰氏阳性菌中,枯草芽孢杆菌载体因下列原因尤为引人瞩目。(一)无致病性,且一般认为安全的有机体;(二)无明显的密码子偏好性;(三)可直接将功能性胞外蛋白分泌到培养基中(目前,大约60%的市售酶由芽孢杆菌生产);(四)具备包含转录,翻译,蛋白质折叠、分泌机制,遗传操作和大规模发酵的大信息量机体。
但是下述两个障碍减少了枯草芽孢杆菌的使用:(一)产生一定数目的识别并降解外源蛋白的胞外蛋白酶;(二)载体质粒稳定性。第一个障碍已因蛋白酶缺失株的构建而基本解决 。第二个因引入使用θ-复制模式质粒被完全克服,如由天然质粒pAMβ1和pBS72衍生的一些质粒(Jannière等,1990;Titok等,2003)。
最近,基于大肠杆菌 - 枯草杆菌穿梭质粒pMTLBS72的四种不同表达载体的构建和使用展示出全面的结构稳定性,业已出版(Nguyen等,2005)。
两个新的载体pHT01和pHT43允许在细胞质中高水平表达重组蛋白,其中pHT43载体引导重组蛋白到培养基。这两个载体基于强σA-依赖性启动子的枯草杆菌groE操纵子通过添加lac操纵子改造成为一种高效可控的(IPTG诱导的)启动子。pHT01衍生载体可与8×His标签(pHT08),链球菌标签(pHT9)或C - Myc的标签(pHT10)相结合。
2. pHT 载体
所有在枯草芽孢杆菌的groESL操纵子之前使强启动子与lac操纵子融合的载体都可通过加入IPTG进行诱导。尽管当未添加诱导物时表达组件的背景表达水平很低,还是成功从约1300种诱导因子中筛选出一种来使用bgaB报道基因(Phan等,2005)。当分别将htpG和pbpE基因融合到groE启动子时,加入IPTG后,表达的重组蛋白可能分别占细胞总蛋白的10%和13%(Phan等,2005)。热纤梭菌的amyQα-淀粉酶和纤维素酶A、B的高水平表达实验证实。该载体还插入了一个高效SD序列以及一个多克隆位点(BamH I, Xba I, Aat II, Sma I)。编码α-淀粉酶的amyQ基因的信号肽编码区域与pHT01的SD序列融合,构成了pHT43,以此获得分泌的重组蛋白。
pHT43载体序列:
ORIGIN
1 ttaagttatt ggtatgactg gttttaagcg caaaaaaagt tgctttttcg tacctattaa
61 tgtatcgttt tagaaaaccg actgtaaaaa gtacagtcgg cattatctca tattataaaa
121 gccagtcatt aggcctatct gacaattcct gaatagagtt cataaacaat cctgcatgat
181 aaccatcaca aacagaatga tgtacctgta aagatagcgg taaatatatt gaattacctt
241 tattaatgaa ttttcctgct gtaataatgg gtagaaggta attactatta ttattgatat
301 ttaagttaaa cccagtaaat gaagtccatg gaataataga aagagaaaaa gcattttcag
361 gtataggtgt tttgggaaac aatttccccg aaccattata tttctctaca tcagaaaggt
421 ataaatcata aaactctttg aagtcattct ttacaggagt ccaaatacca gagaatgttt
481 tagatacacc atcaaaaatt gtataaagtg gctctaactt atcccaataa cctaactctc
541 cgtcgctatt gtaaccagtt ctaaaagctg tatttgagtt tatcaccctt gtcactaaga
601 aaataaatgc agggtaaaat ttatatcctt cttgttttat gtttcggtat aaaacactaa
661 tatcaatttc tgtggttata ctaaaagtcg tttgttggtt caaataatga ttaaatatct
721 cttttctctt ccaattgtct aaatcaattt tattaaagtt catttgatat gcctcctaaa
781 tttttatcta aagtgaattt aggaggctta cttgtctgct ttcttcatta gaatcaatcc
841 ttttttaaaa gtcaatatta ctgtaacata aatatatatt ttaaaaatat cccactttat
901 ccaattttcg tttgttgaac taatgggtgc tttagttgaa gaataaagac cacattaaaa
961 aatgtggtct tttgtgtttt tttaaaggat ttgagcgtag cgaaaaatcc ttttctttct
1021 tatcttgata ataagggtaa ctattgccga tcgtccattc cgacagcatc gccagtcact
1081 atggcgtgct gctagcgcca ttcgccattc aggctgcgca actgttggga agggcgatcg
1141 gtgcgggcct cttcgctatt acgccagctg gcgaaagggg gatgtgctgc aaggcgatta
1201 agttgggtaa cgccagggtt ttcccagtca cgacgttgta aaacgacggc cagtgaattc
1261 gagctcaggc cttaactcac attaattgcg ttgcgctcac tgcccgcttt ccagtcggga
1321 aacctgtcgt gccagctgca ttaatgaatc ggccaacgcg cggggagagg cggtttgcgt
1381 attgggcgcc agggtggttt ttcttttcac cagtgagacg ggcaacagct gattgccctt
1441 caccgcctgg ccctgagaga gttgcagcaa gcggtccacg ctggtttgcc ccagcaggcg
1501 aaaatcctgt ttgatggtgg ttgacggcgg gatataacat gagctgtctt cggtatcgtc
1561 gtatcccact accgagatat ccgcaccaac gcgcagcccg gactcggtaa tggcgcgcat
1621 tgcgcccagc gccatctgat cgttggcaac cagcatcgca gtgggaacga tgccctcatt
1681 cagcatttgc atggtttgtt gaaaaccgga catggcactc cagtcgcctt cccgttccgc
1741 tatcggctga atttgattgc gagtgagata tttatgccag ccagccagac gcagacgcgc
1801 cgagacagaa cttaatgggc ccgctaacag cgcgatttgc tggtgaccca atgcgaccag
1861 atgctccacg cccagtcgcg taccgtcttc atgggagaaa ataatactgt tgatgggtgt
1921 ctggtcagag acatcaagaa ataacgccgg aacattagtg caggcagctt ccacagcaat
1981 ggcatcctgg tcatccagcg gatagttaat gatcagccca ctgacgcgtt gcgcgagaag
2041 attgtgcacc gccgctttac aggcttcgac gccgcttcgt tctaccatcg acaccaccac
2101 gctggcaccc agttgatcgg cgcgagattt aatcgccgcg acaatttgcg acggcgcgtg
2161 cagggccaga ctggaggtgg caacgccaat cagcaacgac tgtttgcccg ccagttgttg
2221 tgccacgcgg ttgggaatgt aattcagctc cgccatcgcc gcttccactt tttcccgcgt
2281 tttcgcagaa acgtggctgg cctggttcac cacgcgggaa acggtctgat aagagacacc
2341 ggcatactct gcgacatcgt ataacgttac tggtttcatc aaaatcgtct ccctccgttt
2401 gaatatttga ttgatcgtaa ccagatgaag cactctttcc actatcccta cagtgttatg
2461 gcttgaacaa tcacgaaaca ataattggta cgtacgatct ttcagccgac tcaaacatca
2521 aatcttacaa atgtagtctt tgaaagtatt acatatgtaa gatttaaatg caaccgtttt
2581 ttcggaagga aatgatgacc tcgtttccac cggaattagc ttggtaccag ctattgtaac
2641 ataatcggta cgggggtgaa aaagctaacg gaaaagggag cggaaaagaa tgatgtaagc
2701 gtgaaaaatt ttttatctta tcacttgaaa ttggaaggga gattctttat tataagaatt
2761 gtggaattgt gagcggataa caattcccaa ttaaaggagg aaggatcaat gattcaaaaa
2821 cgaaagcgga cagtttcgtt cagacttgtg cttatgtgca cgctgttatt tgtcagtttg
2881 ccgattacaa aaacatcagc cgtaggatcc tctagagtcg acgtccccgg ggcagcccgc
2941 ctaatgagcg ggcttttttc acgtcacgcg tccatggaga tctttgtctg caactgaaaa
3001 gtttatacct tacctggaac aaatggttga aacatacgag gctaatatcg gcttattagg
3061 aatagtccct gtactaataa aatcaggtgg atcagttgat cagtatattt tggacgaagc
3121 tcggaaagaa tttggagatg acttgcttaa ttccacaatt aaattaaggg aaagaataaa
3181 gcgatttgat gttcaaggaa tcacggaaga agatactcat gataaagaag ctctaaaact
3241 attcaataac cttacaatgg aattgatcga aagggtggaa ggttaatggt acgaaaatta
3301 ggggatctac ctagaaagcc acaaggcgat aggtcaagct taaagaaccc ttacatggat
3361 cttacagatt ctgaaagtaa agaaacaaca gaggttaaac aaacagaacc aaaaagaaaa
3421 aaagcattgt tgaaaacaat gaaagttgat gtttcaatcc ataataagat taaatcgctg
3481 cacgaaattc tggcagcatc cgaagggaat tcatattact tagaggatac tattgagaga
3541 gctattgata agatggttga gacattacct gagagccaaa aaacttttta tgaatatgaa
3601 ttaaaaaaaa gaaccaacaa aggctgagac agactccaaa cgagtctgtt tttttaaaaa
3661 aaatattagg agcattgaat atatattaga gaattaagaa agacatggga ataaaaatat
3721 tttaaatcca gtaaaaatat gataagatta tttcagaata tgaagaactc tgtttgtttt
3781 tgatgaaaaa acaaacaaaa aaaatccacc taacggaatc tcaatttaac taacagcggc
3841 caaactgaga agttaaattt gagaagggga aaaggcggat ttatacttgt atttaactat
3901 ctccatttta acattttatt aaaccccata caagtgaaaa tcctctttta cactgttcct
3961 ttaggtgatc gcggagggac attatgagtg aagtaaacct aaaaggaaat acagatgaat
4021 tagtgtatta tcgacagcaa accactggaa ataaaatcgc caggaagaga atcaaaaaag
4081 ggaaagaaga agtttattat gttgctgaaa cggaagagaa gatatggaca gaagagcaaa
4141 taaaaaactt ttctttagac aaatttggta cgcatatacc ttacatagaa ggtcattata
4201 caatcttaaa taattacttc tttgattttt ggggctattt tttaggtgct gaaggaattg
4261 cgctctatgc tcacctaact cgttatgcat acggcagcaa agacttttgc tttcctagtc
4321 tacaaacaat cgctaaaaaa atggacaaga ctcctgttac agttagaggc tacttgaaac
4381 tgcttgaaag gtacggtttt atttggaagg taaacgtccg taataaaacc aaggataaca
4441 cagaggaatc cccgattttt aagattagac gtaaggttcc tttgctttca gaagaacttt
4501 taaatggaaa ccctaatatt gaaattccag atgacgagga agcacatgta aagaaggctt
4561 taaaaaagga aaaagagggt cttccaaagg ttttgaaaaa agagcacgat gaatttgtta
4621 aaaaaatgat ggatgagtca gaaacaatta atattccaga ggccttacaa tatgacacaa
4681 tgtatgaaga tatactcagt aaaggagaaa ttcgaaaaga aatcaaaaaa caaataccta
4741 atcctacaac atcttttgag agtatatcaa tgacaactga agaggaaaaa gtcgacagta
4801 ctttaaaaag cgaaatgcaa aatcgtgtct ctaagccttc ttttgatacc tggtttaaaa
4861 acactaagat caaaattgaa aataaaaatt gtttattact tgtaccgagt gaatttgcat
4921 ttgaatggat taagaaaaga tatttagaaa caattaaaac agtccttgaa gaagctggat
4981 atgttttcga aaaaatcgaa ctaagaaaag tgcaataaac tgctgaagta tttcagcagt
5041 tttttttatt tagaaatagt gaaaaaaata taatcaggga ggtatcaata tttaatgagt
5101 actgatttaa atttatttag actggaatta ataattaaca cgtagactaa ttaaaattta
5161 atgagggata aagaggatac aaaaatatta atttcaatcc ctattaaatt ttaacaaggg
5221 ggggattaaa atttaattag aggtttatcc acaagaaaag accctaataa aatttttact
5281 agggttataa cactgattaa tttcttaatg ggggagggat taaaatttaa tgacaaagaa
5341 aacaatcttt taagaaaagc ttttaaaaga taataataaa aagagctttg cgattaagca
5401 aaactcttta ctttttcatt gacattatca aattcatcga tttcaaattg ttgttgtatc
5461 ataaagttaa ttctgttttg cacaaccttt tcaggaatat aaaacacatc tgaggcttgt
5521 tttataaact cagggtcgct aaagtcaatg taacgtagca tatgatatgg tatagcttcc
5581 acccaagtta gcctttctgc ttcttctgaa tgtttttcat atacttccat gggtatctct
5641 aaatgatttt cctcatgtag caaggtatga gcaaaaagtt tatggaattg atagttcctc
5701 tctttttctt caactttttt atctaaaaca aacactttaa catctgagtc aatgtaagca
5761 taagatgttt ttccagtcat aatttcaatc ccaaatcttt tagacagaaa ttctggacgt
5821 aaatcttttg gtgaaagaat ttttttatgt agcaatatat ccgatacagc accttctaaa
5881 agcgttggtg aatagggcat tttacctatc tcctctcatt ttgtggaata aaaatagtca
5941 tattcgtcca tctacctatc ctattatcga acagttgaac tttttaatca aggatcagtc
6001 ctttttttca ttattcttaa actgtgctct taactttaac aactcgattt gtttttccag
6061 atctcgaggg taactagcct cgccgatccc gcaagaggcc cggcagtcag gtggcacttt
6121 tcggggaaat gtgcgcggaa cccctatttg tttatttttc taaatacatt caaatatgta
6181 tccgctcatg agacaataac cctgataaat gcttcaataa tattgaaaaa ggaagagtat
6241 gagtattcaa catttccgtg tcgcccttat tccctttttt gcggcatttt gccttcctgt
6301 ttttgctcac ccagaaacgc tggtgaaagt aaaagatgct gaagatcagt tgggtgcacg
6361 agtgggttac atcgaactgg atctcaacag cggtaagatc cttgagagtt ttcgccccga
6421 agaacgtttt ccaatgatga gcacttttaa agttctgcta tgtggcgcgg tattatcccg
6481 tattgacgcc gggcaagagc aactcggtcg ccgcatacac tattctcaga atgacttggt
6541 tgagtactca ccagtcacag aaaagcatct tacggatggc atgacagtaa gagaattatg
6601 cagtgctgcc ataaccatga gtgataacac tgcggccaac ttacttctga caacgatcgg
6661 aggaccgaag gagctaaccg cttttttgca caacatgggg gatcatgtaa ctcgccttga
6721 tcgttgggaa ccggagctga atgaagccat accaaacgac gagcgtgaca ccacgatgcc
6781 tgtagcaatg gcaacaacgt tgcgcaaact attaactggc gaactactta ctctagcttc
6841 ccggcaacaa ttaatagact ggatggaggc ggataaagtt gcaggaccac ttctgcgctc
6901 ggcccttccg gctggctggt ttattgctga taaatctgga gccggtgagc gtgggtctcg
6961 cggtatcatt gcagcactgg ggccagatgg taagccctcc cgtatcgtag ttatctacac
7021 gacggggagt caggcaacta tggatgaacg aaatagacag atcgctgaga taggtgcctc
7081 actgattaag cattggtaac tgtcagacca agtttactca tatatacttt agattgattt
7141 aaaacttcat ttttaattta aaaggatcta ggtgaagatc ctttttgata atctcatgac
7201 caaaatccct taacgtgagt tttcgttcca ctgagcgtca gaccccgtag aaaagatcaa
7261 aggatcttct tgagatcctt tttttctgcg cgtaatctgc tgcttgcaaa caaaaaaacc
7321 accgctacca gcggtggttt gtttgccgga tcaagagcta ccaactcttt ttccgaaggt
7381 aactggcttc agcagagcgc agataccaaa tactgtcctt ctagtgtagc cgtagttagg
7441 ccaccacttc aagaactctg tagcaccgcc tacatacctc gctctgctaa tcctgttacc
7501 agtggctgct gccagtggcg ataagtcgtg tcttaccggg ttggactcaa gacgatagtt
7561 accggataag gcgcagcggt cgggctgaac ggggggttcg tgcacacagc ccagcttgga
7621 gcgaacgacc tacaccgaac tgagatacct acagcgtgag ctatgagaaa gcgccacgct
7681 tcccgaaggg agaaaggcgg acaggtatcc ggtaagcggc agggtcggaa caggagagcg
7741 cacgagggag cttccagggg gaaacgcctg gtatctttat agtcctgtcg ggtttcgcca
7801 cctctgactt gagcgtcgat ttttgtgatg ctcgtcaggg gggcggagcc tatggaaaaa
7861 cgccagcaac gcggcctttt tacggttcct ggccttttgc tggccttttg ctcacatgtt
7921 ctttcctgcg ttatcccctg attctgtgga taaccgtatt accgcctttg agtgagctga
7981 taccgctcgc cgcagccgaa cgaccgagcg cagcgagtca gtgagcgagg aagcggaaga
8041 gcgcccaata cgcatgc
//
pHT43载体其他相关的其他类型载体: