CN102533803A - 灵芝漆酶基因及其真核表达和纯化方法 - Google Patents
灵芝漆酶基因及其真核表达和纯化方法 Download PDFInfo
- Publication number
- CN102533803A CN102533803A CN2010105985073A CN201010598507A CN102533803A CN 102533803 A CN102533803 A CN 102533803A CN 2010105985073 A CN2010105985073 A CN 2010105985073A CN 201010598507 A CN201010598507 A CN 201010598507A CN 102533803 A CN102533803 A CN 102533803A
- Authority
- CN
- China
- Prior art keywords
- enzyme
- ganoderma lucidum
- laccase gene
- 60mer
- gene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 108010029541 Laccase Proteins 0.000 title claims abstract description 52
- 238000000746 purification Methods 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title abstract description 10
- 241000222336 Ganoderma Species 0.000 title abstract description 8
- 239000002773 nucleotide Substances 0.000 claims abstract description 5
- 125000003729 nucleotide group Chemical group 0.000 claims abstract description 5
- 240000008397 Ganoderma lucidum Species 0.000 claims description 32
- 235000001637 Ganoderma lucidum Nutrition 0.000 claims description 32
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 241000235648 Pichia Species 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 2
- 241000206602 Eukaryota Species 0.000 claims 3
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims 1
- 108090000623 proteins and genes Proteins 0.000 abstract description 9
- 238000009776 industrial production Methods 0.000 abstract description 3
- 125000003275 alpha amino acid group Chemical group 0.000 abstract 1
- 239000013604 expression vector Substances 0.000 abstract 1
- 108090000790 Enzymes Proteins 0.000 description 42
- 102000004190 Enzymes Human genes 0.000 description 42
- 239000000758 substrate Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 238000011160 research Methods 0.000 description 7
- OHDRQQURAXLVGJ-HLVWOLMTSA-N azane;(2e)-3-ethyl-2-[(e)-(3-ethyl-6-sulfo-1,3-benzothiazol-2-ylidene)hydrazinylidene]-1,3-benzothiazole-6-sulfonic acid Chemical compound [NH4+].[NH4+].S/1C2=CC(S([O-])(=O)=O)=CC=C2N(CC)C\1=N/N=C1/SC2=CC(S([O-])(=O)=O)=CC=C2N1CC OHDRQQURAXLVGJ-HLVWOLMTSA-N 0.000 description 5
- LHGVFZTZFXWLCP-UHFFFAOYSA-N guaiacol Chemical compound COC1=CC=CC=C1O LHGVFZTZFXWLCP-UHFFFAOYSA-N 0.000 description 5
- 102000004169 proteins and genes Human genes 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- MEIRRNXMZYDVDW-MQQKCMAXSA-N (2E,4E)-2,4-hexadien-1-ol Chemical compound C\C=C\C=C\CO MEIRRNXMZYDVDW-MQQKCMAXSA-N 0.000 description 4
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 4
- 150000001413 amino acids Chemical group 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 4
- 238000006911 enzymatic reaction Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- -1 metals ion Chemical class 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- COLNVLDHVKWLRT-QMMMGPOBSA-N L-phenylalanine Chemical compound OC(=O)[C@@H](N)CC1=CC=CC=C1 COLNVLDHVKWLRT-QMMMGPOBSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000013612 plasmid Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 2
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 2
- 230000004544 DNA amplification Effects 0.000 description 2
- 102100031780 Endonuclease Human genes 0.000 description 2
- 108010042407 Endonucleases Proteins 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229930195725 Mannitol Natural products 0.000 description 2
- 108091034117 Oligonucleotide Proteins 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000001994 activation Methods 0.000 description 2
- 239000008272 agar Substances 0.000 description 2
- 239000011543 agarose gel Substances 0.000 description 2
- 238000010367 cloning Methods 0.000 description 2
- 239000013599 cloning vector Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000000594 mannitol Substances 0.000 description 2
- 235000010355 mannitol Nutrition 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 108020004707 nucleic acids Proteins 0.000 description 2
- 102000039446 nucleic acids Human genes 0.000 description 2
- 150000007523 nucleic acids Chemical class 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000018102 proteins Nutrition 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- PODWXQQNRWNDGD-UHFFFAOYSA-L sodium thiosulfate pentahydrate Chemical compound O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=O)=O PODWXQQNRWNDGD-UHFFFAOYSA-L 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 description 1
- XKZQKPRCPNGNFR-UHFFFAOYSA-N 2-(3-hydroxyphenyl)phenol Chemical compound OC1=CC=CC(C=2C(=CC=CC=2)O)=C1 XKZQKPRCPNGNFR-UHFFFAOYSA-N 0.000 description 1
- 229920000936 Agarose Polymers 0.000 description 1
- PYIXHKGTJKCVBJ-UHFFFAOYSA-N Astraciceran Natural products C1OC2=CC(O)=CC=C2CC1C1=CC(OCO2)=C2C=C1OC PYIXHKGTJKCVBJ-UHFFFAOYSA-N 0.000 description 1
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000221198 Basidiomycota Species 0.000 description 1
- NDVRQFZUJRMKKP-UHFFFAOYSA-N Betavulgarin Natural products O=C1C=2C(OC)=C3OCOC3=CC=2OC=C1C1=CC=CC=C1O NDVRQFZUJRMKKP-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 101000972324 Cynodon dactylon Leaf protein Proteins 0.000 description 1
- 102000016928 DNA-directed DNA polymerase Human genes 0.000 description 1
- 108010014303 DNA-directed DNA polymerase Proteins 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 239000001263 FEMA 3042 Substances 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 description 1
- ODKSFYDXXFIFQN-BYPYZUCNSA-N L-arginine Chemical compound OC(=O)[C@@H](N)CCCN=C(N)N ODKSFYDXXFIFQN-BYPYZUCNSA-N 0.000 description 1
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 description 1
- HNDVDQJCIGZPNO-YFKPBYRVSA-N L-histidine Chemical compound OC(=O)[C@@H](N)CC1=CN=CN1 HNDVDQJCIGZPNO-YFKPBYRVSA-N 0.000 description 1
- 241000530268 Lycaena heteronea Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 101710157860 Oxydoreductase Proteins 0.000 description 1
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- IHPVFYLOGNNZLA-UHFFFAOYSA-N Phytoalexin Natural products COC1=CC=CC=C1C1OC(C=C2C(OCO2)=C2OC)=C2C(=O)C1 IHPVFYLOGNNZLA-UHFFFAOYSA-N 0.000 description 1
- 241000222341 Polyporaceae Species 0.000 description 1
- 239000004365 Protease Substances 0.000 description 1
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 108700005078 Synthetic Genes Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 238000012870 ammonium sulfate precipitation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 235000003704 aspartic acid Nutrition 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 description 1
- 229940041514 candida albicans extract Drugs 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 239000007979 citrate buffer Substances 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003527 eukaryotic cell Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 244000000004 fungal plant pathogen Species 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 235000013905 glycine and its sodium salt Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229960001867 guaiacol Drugs 0.000 description 1
- HNDVDQJCIGZPNO-UHFFFAOYSA-N histidine Natural products OC(=O)C(N)CC1=CN=CN1 HNDVDQJCIGZPNO-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 238000010369 molecular cloning Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- COLNVLDHVKWLRT-UHFFFAOYSA-N phenylalanine Natural products OC(=O)C(N)CC1=CC=CC=C1 COLNVLDHVKWLRT-UHFFFAOYSA-N 0.000 description 1
- 230000026731 phosphorylation Effects 0.000 description 1
- 238000006366 phosphorylation reaction Methods 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 239000000280 phytoalexin Substances 0.000 description 1
- 150000001857 phytoalexin derivatives Chemical class 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000012064 sodium phosphate buffer Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 description 1
- 229940033123 tannic acid Drugs 0.000 description 1
- 235000015523 tannic acid Nutrition 0.000 description 1
- 229920002258 tannic acid Polymers 0.000 description 1
- 108010046845 tryptones Proteins 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
- 239000012138 yeast extract Substances 0.000 description 1
Images
Landscapes
- Enzymes And Modification Thereof (AREA)
Abstract
本发明涉及一种灵芝漆酶基因及其真核表达和纯化方法。所述的灵芝漆酶基因的核苷酸序列如SEQ ID No.1所示,其编码的氨基酸序列如SEQ ID No.2所示。将该基因构建到真核表达载体中并转化入真核生物中,可用于灵芝漆酶的工业生产应用。
Description
技术领域
本发明涉及一种灵芝漆酶基因及其真核表达和纯化方法。
背景技术
漆酶(EC 1.10.3.2)是一种含铜的氧化还原酶,属于氧化酶的蓝铜家族(Eur J Biochem187:341-352)。漆酶的应用范围很广,目前研究它的应用主要集中在它降解各种化工染料(J Ind Microbiol Biotechnol 31:127-132)、芳香族类化合物(Microbial Cell Factories 5:31)以及二酚、多酚类化合物(Process Biochemistry 45:507-513)的功能。除此之外,漆酶在不同的物种发挥不同的功能:在昆虫中,它们参与甲壳的硬化;在植物中,参与细胞壁形成,还与木质素化和去木质素有关;在芽孢杆菌中,则是和抗紫外线的孢子组装有关;在一些植物致病性真菌利用这类酶免除植物抗毒素和鞣酸的作用。众所周知,漆酶给工业生产方面带来了巨大的贡献。大量的漆酶基因从植物(J Chem Soc 43:472)、动物(万云洋,博士论文,武汉大学)和微生物(Microbiology 148:4003-4014)中分离出来,进行了系统的研究。
在NCBI数据库中,收集了很多微生物的全基因组的信息,其中编码蛋白的序列都被注释了。但是大部分的蛋白的生化功能和生理功能都是未知的。因此研究注释蛋白的功能可以完善这些酶学,并运用到工业应用中去。
多孔菌科灵芝属于白腐菌担子菌纲家族,是亚洲很受欢迎的药用菌类。它的化学成分较为复杂,含有多糖类、免疫调节蛋白(Phytochemistry 67:1985-2001)以及抗肿瘤蛋白(Immunol Invest 34:171-198)等。然而来自灵芝的漆酶生理生化特性研究和应用还很少。
发明内容
本发明所要解决的技术问题在于提供一种灵芝漆酶基因及其真核表达和纯化方法,即通过化学合成方法得到所述的漆酶基因,研究其生理生化特性,将其应用于真核生物的表达和纯化中。
本发明的技术方案是通过以下方式来实现的。
所述的灵芝漆酶基因,来自于灵芝,其核苷酸序列如SEQ ID No 1所示,其编码的氨基酸序列如SEQ ID No 2所示,其是通过化学合成方法制得的。即采用大量重叠的引物通过两步PCR进行全基因合成(PTDS)(Nucleic Acids Research,2004,32:e98)。该方法是通过重叠延伸获得合成基因的片段,再通过最外侧的引物将全长的基因扩增得到。该方法的一个明显优势就是不需要对引物进行磷酸化处理。而且通过高通量的DNA合成仪器,可以较为便利地获得大量的引物。
所述的灵芝漆酶基因,其具体合成方法如下:
1、引物设计
设计长度大概为60mer左右的覆盖整个灵芝漆酶基因的寡核苷酸的序列36个,作为引物。每相邻的两个寡核苷酸序列有20个碱基的重复。
利用PCR进行灵芝漆酶基因扩增,在100μl反应体系中,P2-P35共34个引物的添加量为2ng,外侧引物P1和P36添加量为30ng,扩增条件为:94℃预热1min;94℃,30s,52℃,30s,72℃,1.5min,72℃10min,使用的Taq DNA聚合酶为KOD FX taq酶(Toyobo公司,日本),共30个循环。
PCR结束后,1%琼脂糖胶回收片段,取10μl直接与T/A克隆载体相连(大连宝生物公司)。4℃连接过夜,高效转化于DH5α感受态中,即获得长度为1512bp的阳性克隆,即为本发明的灵芝漆酶基因,其核苷酸序列如SEQ ID No 1所示,其编码的氨基酸序列如SEQ IDNo 2所示。
将上述制得的漆酶基因转入真核生物细胞中。即将上述制得的漆酶基因直接与真核表达载体pYM7909(上海市农科院生物所实验室提供)相连,经过DH5α克隆过的环形质粒单酶切使其线性化,取约1μl的线性DNA与80μl毕赤酵母感受态细胞混合后进行点击转化,然后涂布于固体SD山梨醇培养基(20g/L琼脂,20g/L葡萄糖,146g/L山梨醇,SD)上,28℃继续培养3天后获得白色菌落。挑取经测活呈阳性的毕赤酵母进行细胞外分泌表达纯化,即获得纯化后的灵芝漆酶基因。
本发明的灵芝漆酶基因是一类应用非常广泛的生物用酶,通过克隆,可以高效合成本发明的漆酶基因,通过对该基因真核表达和纯化,可以将其应用于灵芝漆酶基因的工业生产中。
附图说明
图1为本发明的灵芝漆酶基因的化学合成方法策略图。
图2为以pYM7909质粒构建DNA表达单元的示意图。
图3为酶的最适温度、最适pH及温度和pH的稳定性结果,其中,图A为灵芝漆酶的最适温度;图B为该漆酶最适pH值;图C为该漆酶温度稳定性;图D为该漆酶pH稳定性。
图4为金属离子对酶活的影响。
图5为有机无机化合物对酶活的影响,其中1.对照,2.硫代硫酸钠,3.叠氮化钠,4.甘露醇,5.低亚硫酸钠,6.L型-丙氨酸,7.L型-组氨酸,8.L型-甘氨酸,9.L型-精氨酸,10.L型-天门冬氨酸,11.L型-苯丙氨酸。
具体实施方式
以下结合附图详细描述本发明的技术方案。实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的精神和范围,其均应涵盖在本发明的权利要求范围中。
本发明所用的试剂若未经说明,均购自西格玛-奥德里奇(Sigma-Aldrich)公司。
本发明涉及分子生物学实验,如没有特别注明,均参考自《分子克隆》一书(J.萨姆布鲁克、E.F.弗里奇、T.曼尼阿蒂斯著,1994,科学出版社。)
实施例1 灵芝漆酶基因的化学合成
参看图1,以基因合成方法(Nucleic Acids Research,2004,32,e98)克隆制备本发明的灵芝漆酶基因。设计的引物如下:
P1:Tm=54,60mer
GCT,GCT,GTC,GTC,GTC,AAT,GGT,GTC,TTC,CCT,GGT,CCA,CTG,ATC,ACT,GGC,AAC,AAG,GGA,GAC
P2:Tm=54,60mer
TGT,GGT,TGG,TCA,GCT,GGT,CGA,TGA,CGT,TCA,GCT,GGA,ATC,TGT,CTC,CCT,TGT,TGC,CAG,TGA
P3:Tm=54,60mer
CGA,CCA,GCT,GAC,CAA,CCA,CAC,CAT,GCT,GAA,GAC,CAC,CTC,CAT,CCA,CTG,GCA,TGG,CTT,CTT
P4:Tm=54,60mer
GAT,GAA,GGC,AGG,ACC,ATC,AGC,CCA,GTT,AGT,ACC,TTT,CTG,GAA,GAA,GCC,ATG,CCA,GTG,GAT
P5:Tm=54,60mer
CTG,ATG,GTC,CTG,CCT,TCA,TCA,ACC,AGT,GTC,CAA,TCG,CTT,CTG,GTC,ATT,CCT,TCC,TGT,ACG
P6:Tm=54,60mer
TGA,TAC,CAG,AAG,GTG,CCA,GCT,TGA,TCT,GGA,ACT,TGA,AAG,TCG,TAC,AGG,AAG,GAA,TGA,CCA
P7:Tm=54,60mer
GCT,GGC,ACC,TTC,TGG,TAT,CAC,TCT,CAT,CTG,TCT,ACT,CAG,TAC,TGT,GAT,GGT,CTG,AGA,GGT
P8:Tm=54,60mer
GAC,CCT,TCA,GAG,GAT,CTT,TAG,GAT,CAT,AGA,CAA,CGA,ATG,GAC,CTC,TCA,GAC,CAT,CAC,AGT
P9:Tm=54,60mer
TAA,AGA,TCC,TCT,GAA,GGG,TCT,GTA,CGA,TGT,TGA,TAA,CGA,TTC,TAC,TGT,TAT,CAC,TCT,GTC
P10:Tm=54,60mer
GAA,GGA,AGG,TCC,AAG,TCT,GGC,AGC,AAC,ATG,ATA,CCA,GTC,AGA,CAG,AGT,GAT,AAC,AGT,AGA
P11:Tm=54,60mer
CCA,GAC,TTG,GAC,CTT,CCT,TCC,CAC,TGG,GTT,CTG,ACT,CCA,CTC,TGA,TCA,ATG,GTC,TGG,GTA
P12:Tm=54,60mer
TTG,ATG,ACA,GCA,AGA,CCA,GCA,GTA,GCG,TTG,GTG,GTG,GAT,CTA,CCC,AGA,CCA,TTG,ATC,AGA
P13:Tm=54,60mer
GCT,GGT,CTT,GCT,GTC,ATC,AAC,GTC,ACC,CAA,GGC,AAG,AGA,TAC,AGA,TTC,AGA,CTG,GTC,TCC
P14:Tm=54,60mer
GAC,CAT,CGA,TAG,AGA,AGG,TGT,AGT,TAG,GAT,CAC,AGG,ACA,GGG,AGA,CCA,GTC,TGA,ATC,TGT
P15:Tm=54,60mer
CAC,CTT,CTC,TAT,CGA,TGG,TCA,TGA,CAT,GTC,CGT,CAT,CGA,AGC,TGA,TGG,CAT,TGC,TAC,TCA
P16:Tm=54,60mer
CTG,AGC,AGA,GAA,GAT,TTG,GAT,AGC,GTT,AGC,AGT,GAC,AGG,TTG,AGT,AGC,AAT,GCC,ATC,AGC
P17:Tm=54,60mer
TCC,AAA,TCT,TCT,CTG,CTC,AGA,GAT,ACT,CCT,TCG,TCC,TGA,CTG,CCA,ACC,AGA,CCA,TTG,GCA
P18:Tm=54,60mer
CCG,ATG,TTT,CCG,AAG,GAA,GGA,TTG,GCT,CTG,ATC,CAG,TAG,TTG,CCA,ATG,GTC,TGG,TTG,GCA
P19:Tm=54,60mer
CCT,TCC,TTC,GGA,AAC,ATC,GGT,TTC,ACC,AAT,GGC,ATC,AAC,TCT,GCC,ATC,CTG,AGA,TAC,TCT
P20:Tm=54,60mer
TGG,TCT,GTT,GAG,CAG,TAG,TAG,GTT,CGA,TAG,GAT,CAG,CTC,CAG,AGT,ATC,TCA,GGA,TGG,CAG
P21:Tm=54,60mer
TAC,TAC,TGC,TCA,ACA,GAC,CAC,TCA,GAA,CCT,GCT,GAA,CGA,AGT,TGA,TCT,GCA,TCC,ATT,CGT
P22:Tm=54,60mer
AGT,ACC,ACC,TTG,AGT,AGC,TCT,ACC,AGG,AGT,CTG,CTT,AGC,AAC,GAA,TGG,ATG,CAG,ATC,AAC
P23:Tm=54,60mer
GAG,CTA,CTC,AAG,GTG,GTA,CTG,ATG,TTG,CCA,TCA,ACA,TGG,TCT,TCA,ACT,TCA,ATG,GCT,CCA
P24:Tm=54,60mer
ACA,GTT,GGT,GGA,GTG,AAG,GAA,GCG,TTG,TTG,ATG,AAG,AAG,TTG,GAG,CCA,TTG,AAG,TTG,AAG
P25:Tm=54,60mer
TCC,TTC,ACT,CCA,CCA,ACT,GTT,CCT,GTC,CTG,CTT,CAG,ATT,CTG,TCT,GGT,GCA,CAA,GCA,GCT
P26:Tm=54,60mer
TAG,GAA,GAG,TGT,AGA,CAG,AGC,CAG,ATG,GAA,GCA,GAT,CCT,GAG,CTG,CTT,GTG,CAC,CAG,ACA
P27:Tm=54,60mer
CTC,TGT,CTA,CAC,TCT,TCC,TAT,CAA,CAA,GTC,CAT,CGA,ACT,CAC,CTT,TCC,TGC,TAC,TGT,CAA
P28:Tm=54,60mer
GTG,ACC,ATG,CAG,GTG,GAA,TGG,ATG,TGG,AGC,ACC,AGG,AGC,ATT,GAC,AGT,AGC,AGG,AAA,GGT
P29:Tm=54,60mer
CAT,TCC,ACC,TGC,ATG,GTC,ACT,CCT,TCG,CTG,TCG,TCA,GAA,GTG,CTG,GTT,CCA,CCG,AGT,ACA
P30:Tm=54,60mer
CCA,GTG,GAG,ACG,ACG,TCT,CTC,CAG,ACA,GGG,TTG,TTG,TAG,TTG,TAC,TCG,GTG,GAA,CCA,GCA
P31:Tm=54,60mer
AGA,GAC,GTC,GTC,TCC,ACT,GGT,ACT,CCT,GCT,GCT,GGT,GAT,AAC,GTC,ACC,ATC,AGA,TTC,CAG
P32:Tm=54,60mer
CGA,TGT,GAC,AAT,GCA,GGA,ACC,AAG,GTC,CAG,GAT,TGT,CAG,TCT,GGA,ATC,TGA,TGG,TGA,CGT
P33:Tm=54,60mer
GTT,CCT,GCA,TTG,TCA,CAT,CGA,CTT,TCA,TCT,CGA,AGC,TGG,CTT,TGC,TGT,TGT,CTT,TGC,TGA
P34:Tm=54,60mer
CTG,TGG,AAC,ATG,GTT,GGC,AAG,AGA,AGT,GTC,AGC,AGT,GTC,TTC,AGC,AAA,GAC,AAC,AGC,AAA
P35:Tm=54,60mer
TTG,CCA,ACC,ATG,TTC,CAC,AGG,CTT,GGT,CTG,ACC,TGT,GTC,CTA,CCT,ACG,ATG,CTC,TCT,CTG
P36:Tm=54,40mer
GAG,CTC,TTA,GTG,GTC,GTC,AGC,AGA,GAG,AGC,ATC,GTA,GGT,A
利用PCR进行扩增,在100μl反应体系中,P2--P35共34个引物的添加量为2ng,外侧引物P1和P36添加量为30ng,扩增条件为:94℃预热1min;94℃30s,52℃30s,72℃1.5min,72℃10min,使用的Taq DNA聚合酶为KOD FX taq酶(Toyobo公司,日本),共30个循环。
PCR结束后,1%琼脂糖胶回收,取10μl直接与T/A克隆载体相连(大连宝生物公司)。4℃连接过夜,高效转化DH5α感受态中。获得阳性克隆,即为本发明的灵芝漆酶基因,其序列如SEQ ID No 1所示,其编码的氨基酸序列如SEQ ID No 2所示。将该SEQ ID No 1序列与来自灵芝的漆酶基因相比对,同源性为75.24%,具体如下:
1 GCTGCTGTCGTCGTCAATGGTGTCTTCCCTGGTCCACTGATCACTGGCAACAAGGGAGAC
|| || || || || ||||||||||||||||| || || ||||| || ||||||||||||
130 GCCGCCGTTGTGGTGAATGGTGTCTTCCCTGGGCCGCTCATCACAGGGAACAAGGGAGAC
61 AGATTCCAGCTGAACGTCATCGACCAGCTGACCAACCACACCATGCTGAAGACCACCTCC
| ||||||||||| ||||||||||| ||||| |||||||| ||||||||||||||| |
190 CGTTTCCAGCTGAATGTCATCGACCAACTGACGAACCACACAATGCTGAAGACCACCAGC
121 ATCCACTGGCATGGCTTCTTCCAGAAAGGTACTAACTGGGCTGATGGTCCTGCCTTCATC
|| || ||||||||||| |||||||| || || |||||||| |||||||| || ||||||
250 ATTCATTGGCATGGCTTTTTCCAGAAGGGCACGAACTGGGCGGATGGTCCCGCGTTCATC
181 AACCAGTGTCCAATCGCTTCTGGTCATTCCTTCCTGTACGACTTTCAAGTTCCAGATCAA
||||||||||| || ||| || || || ||||| ||||| || || ||||| |||||
310 AACCAGTGTCCGATTGCTAGCGGGCACTCGTTCCTCTACGATTTCCAGGTTCCGGATCAG
241 GCTGGCACCTTCTGGTATCACTCTCATCTGTCTACTCAGTACTGTGATGGTCTGAGAGGT
|| ||||| || ||||| ||| ||||| || || ||||||||||| ||||| || |||
370 GCCGGCACTTTTTGGTACCACAGCCATCTCTCCACGCAGTACTGTGACGGTCTCAGGGGT
301 CCATTCGTTGTCTATGATCCTAAAGATCCTCTGAAGGGTCTGTACGATGTTGATAACGAT
|||||||| || ||||| ||||| || || || ||||| |||||||| || || |||||
430 CCATTCGTGGTATATGACCCTAAGGACCCCCTCAAGGGACTGTACGACGTCGACAACGAC
361 TCTACTGTTATCACTCTGTCTGACTGGTATCATGTTGCTGCCAGACTTGGACCTTCCTTC
|| ||||| ||||| || || ||||||||||| || |||||||| |||||||| ||||
490 TCGACTGTGATCACCCTCTCCGACTGGTATCACGTGGCTGCCAGGCTTGGACCGAGCTTC
421 CCACTGGGTTCTGACTCCACTCTGATCAATGGTCTGGGTAGATCCACCACCAACGCTACT
|| || || || ||||| ||||| |||||||| || || | ||| |||||||||||
550 CCGCTCGGCTCGGACTCGACTCTCATCAATGGCCTTGGCCGTAGCACTACCAACGCTACC
481 GCTGGTCTTGCTGTCATCAACGTCACCCAAGGCAAGAGATACAGATTCAGACTGGTCTCC
|| || || ||||| ||||||||||| || ||||| | || | ||| | || || |||
610 GCCGGCCTCGCTGTTATCAACGTCACACAGGGCAAACGTTATCGCTTCCGCCTTGTGTCC
541 CTGTCCTGTGATCCTAACTACACCTTCTCTATCGATGGTCATGACATGTCCGTCATCGAA
|||| || || || |||||||||||| ||||| || |||||||||||||| || ||
670 TTGTCATGCGACCCCAACTACACCTTCAGCATCGACGGCCATGACATGTCCGTTATTGAG
601 GCTGATGGCATTGCTACTCAACCTGTCACTGCTAACGCTATCCAAATCTTCTCTGCTCAG
|| ||||| ||||| || ||||| || || || |||||||| |||||||||||||||||
730 GCGGATGGTATTGCAACGCAACCCGTGACCGCGAACGCTATTCAAATCTTCTCTGCTCAA
661 AGATACTCCTTCGTCCTGACTGCCAACCAGACCATTGGCAACTACTGGATCAGAGCCAAT
|||| || ||||| |||||||| || ||||| ||||||||||| ||||| | |||||
790 CGATATTCTTTCGTGCTGACTGCAAATCAGACAATTGGCAACTATTGGATTCGCGCCAAC
721 CCTTCCTTCGGAAACATCGGTTTCACCAATGGCATCAACTCTGCCATCCTGAGATACTCT
|| ||| ||||| || |||||||| ||||| |||||||||||||||||| | |||||
850 CCGAGCTTTGGAAATATTGGTTTCACGAATGGAATCAACTCTGCCATCCTGCGCTACTCG
781 GGAGCTGATCCTATCGAACCTACTACTGCTCAACAGACCACTCAGAACCTGCTGAACGAA
||||| ||||| ||||||||||| || || ||||| ||||| |||||||| || || ||
910 GGAGCGGATCCCATCGAACCTACGACGGCCCAACAAACCACACAGAACCTCCTCAATGAG
841 GTTGATCTGCATCCATTCGTTGCTAAGCAGACTCCTGGTAGAGCTACTCAAGGTGGTACT
|| || || || || || || ||||| ||||| ||||| | ||||| || ||||||||
970 GTCGACCTCCACCCCTTTGTCGCTAAACAGACGCCTGGCCGCGCTACACAGGGTGGTACC
901 GATGTTGCCATCAACATGGTCTTCAACTTCAATGGCTCCAACTTCTTCATCAACAACGCT
||||| ||||||||||||||||||||||| || ||||| ||||||||||||||||||||
1030 GATGTGGCCATCAACATGGTCTTCAACTTTAACGGCTCGAACTTCTTCATCAACAACGCG
961 TCCTTCACTCCACCAACTGTTCCTGTCCTGCTTCAGATTCTGTCTGGTGCACAAGCAGCT
|||||||| || || ||||| || ||||| ||||||||| || || ||||| || ||
1090 TCCTTCACGCCTCCCACTGTCCCCGTCCTCCTTCAGATTTTGAGCGGCGCACAGGCCGCC
1021 CAGGATCTGCTTCCATCTGGCTCTGTCTACACTCTTCCTATCAACAAGTCCATCGAACTC
||||| || || || || || ||||||||| || || ||||||||||||||||| |||
1150 CAGGACCTCCTGCCTTCCGGAAGTGTCTACACGCTGCCGATCAACAAGTCCATCGAGCTC
1081 ACCTTTCCTGCTACTGTCAATGCTCCTGGTGCTCCACATCCATTCCACCTGCATGGTCAC
||||| || || || ||||| || || || ||||| || || ||||||||||| |||||
1210 ACCTTCCCCGCCACGGTCAACGCCCCCGGGGCTCCCCACCCCTTCCACCTGCACGGTCAT
1141 TCCTTCGCTGTCGTCAGAAGTGCTGGTTCCACCGAGTACAACTACAACAACCCTGTCTGG
|| |||||||| ||| | || || || ||||| || |||||||| ||||| || || |||
1270 TCGTTCGCTGTGGTCCGCAGCGCCGGCTCCACAGAATACAACTATAACAATCCCGTATGG
1201 AGAGACGTCGTCTCCACTGGTACTCATGTTCCACAGGCTTGGTCTGACCTGTGTCCTACC
| |||||||| || || || || | || | | | |
1330 CGCGACGTCGTTTCGACCGGCACCCCTGCAGCGGGCGACAACGTCACGATCCGCTTCCAG
1261 TACGATGCTCTCTCTGCTGACGACCACTAAGAGCTCATCGACTTTCATCTCGAAGCTGGC
||| | | | || | | | ||||||||| ||||||| || |||
1390 ACCGACAACCCCGGACCGTGGTTCCTCCATTGCCACATCGACTTCCATCTCGAGGCGGGC
1321 TTTGCTGTTGTCTTTGCTGAAGACACTGCTGACACTTCTCTTGCCAACCCTGCTGCTGGT
|| ||||| || || || || ||||| ||||| |||||||| || |||| ||
1450 TTCGCTGTCGTGTTCGCCGAGGACACCGCTGATACTTCTCTGGCGAACCA...TGTCCCA
1381 GATAACGTCACCATCAGATTCCAGACTGACAATCCTGGACCTTGGTTCCTGCATTGTCAC
| | | || ||| || || | | || ||
1507 CAAGCATGGTCGGATCTTTGCCCGACGTACGATGCGCTCTCGGCTGATGATCACTGA
实施例2 灵芝漆酶基因在毕赤酵母中表达
将实施例1制得的漆酶基因直接与真核表达载体pYM7909相连,经过DH5α克隆过的环形质粒单酶切使其线性化,取约1μl的线性DNA与80μl毕赤酵母感受态细胞混合后进行点击转化,然后涂布于固体SD山梨醇培养基(20g/L琼脂,20g/L葡萄糖,146g/L山梨醇,SD)上,28℃继续培养3天后获得白色菌落。挑取多个经测活呈阳性的毕赤酵母,分别接种于3ml液体BMGY培养基(10g/L酵母提取物,10g/L胰蛋白胨,5μl生物素,1%甘油,SD)中,26℃摇床直到菌液的浓度达到OD600为1.0时离心(12000rpm)收集菌体,再用液体BMMY培养基(SD)重悬毕赤酵母菌体,1%甲醇诱导3天,离心(12000rpm)分别收集上清测活,选取有活性的菌株活化。按上述方法进行大量培养,使得灵芝漆酶大量表达。
实施例3 灵芝漆酶基因的纯化
将实施例2中得到的培养液在5,000g重力加速度下离心5min,收集含有酶液上清,进行硫酸铵沉淀,所得到的蛋白沉淀用SD重悬,使用微孔滤膜过滤离心好的上清,上到Ni-Agarose柱上,纯化出目的蛋白,将目的蛋白透析后使用蛋白保存液保存起来。该目的蛋白即为纯化后的灵芝漆酶基因。
实施例4 灵芝漆酶基因的酶动力学特性分析
灵芝漆酶基因的酶动力学特性分析主要有2个底物。它们分别是:愈疮木酚和ABTS,反应采用实施例3中的体系。主要测定灵芝漆酶酶基因对不同底物的Km和最大反应速度Vmax,也就是在温度、pH及酶浓度恒定的条件下,底物浓度对酶促反应的速度有很大的影响。在底物浓度很低时,酶促反应的速度(v)随底物浓度的增加而迅速增加;随着底物浓度的继续增加,反应速度的增加开始减慢;当底物浓度增加到某种程度时,反应速度达到一个极限值(Vmax)。
底物浓度与反应速度的这种关系可用Michaelis-Menten方程式表示:
式中,v:反应速度;Km:米氏常数;Vmax:酶反应最大速度;[S]:底物浓度。
采用Linewaver-Burk作图法测定Km、Vmax。该法是根据米氏方程的倒数形式,以1/v对1/[S]作图,得到一条直线。直线在横轴上的截距为-1/Km,纵截距为1/Vmax,求出Km与Vmax。
本发明所用的2个底物及浓度为:愈疮木酚(Guaiacol,学名:邻甲氧基苯酚,从0.0343mM到0.343mM),ABTS(从0.5mM到4mM)。所得到的结果如下表1所示。
表1
实施例5 灵芝漆酶基因的生理生化特性分析
对实施例3中的蛋白酶液上清做特定的生理生化特性分析。其分析过程是在下述的酶反应体系中进行的:100μl NaHPO4-柠檬酸缓冲液(0.2M NaHPO4,0.1M柠檬酸,pH 2.6)中含有1mM的反应底物ABTS。反应以加入50μl的酶液开始,反应是在55℃的水浴锅中进行10min,以加入50μl的1M氟化钠终止反应。然后在420nm处测量ABTS产物的释放量。本发明将一定数量的酶在每分钟催化1μmol的ABTS的活力定义为1U,灵芝漆酶基因的蛋白浓度是使用Bradford试剂盒来分析的。
本发明分析的生理生化特性主要有:酶的最适反应温度、酶的温度的稳定性,酶的最适反应的pH、pH的稳定性,金属离子对酶活的影响,以及有机和无机化合物对酶活的影响。
在研究酶的最适反应温度时,反应的温度从35℃开始,每隔5℃,一直到70℃。每个体系做3个重复试验(以下每个反应都是3次重复);在研究酶的温度的稳定性时,主要测定酶在25、35、45和55℃这四个不同温度处理酶液,然后在最适温度下测定酶的残余活性;在研究酶的最适反应的pH时,选择柠檬酸-磷酸钠缓冲液(0.1M,pH 2.0-8.0);在研究酶的pH的稳定性时,是先将酶在不同的pH的缓冲液中先处理24h,然后在酶的最适pH的测定酶的残余活性;在金属离子对酶活的影响,有机和无机化合物对酶活的影响是将酶用不同的影响因素处理,然后在酶的最佳反应体系中测定酶的残余活性。
实验表证:酶在55℃,pH 2.6时活性最高,虽然酶的热稳定性不高,在55℃处理20min后,酶的活性只有8.9%了。但是酶有个很好的pH稳定性,在pH=8的缓冲液中处理24h后还有73%的活性(参看图3)。金属离子在低浓度1mM时,Mg2+、Mn2+、Zn2+对酶的影响不大,K+、Na+、Ca2+、Cu2+对酶活有促进作用,Al3+、Fe2+、Fe3+对酶活有明显的抑制作用;当金属离子浓度增高到10mM时,K+、Na+、Ca2+、Mg2+、Cu2+对酶活有明显的促进作用,Al3+、Zn2+、Fe2+、Fe3+能分别抑制29.64%、39.14%、12.12%和12.96%的活性。此外,经试验研究发现,该酶的活性能被10mM EDTA和SDS抑制(参看图4)。0.1mM的叠氮化钠、低亚硫酸钠和1mM硫代硫酸钠能够明显抑制酶活(参看图5),且该酶还能够被1mM甘露醇和L型丙氨酸、组氨酸、甘氨酸、精氨酸、天冬氨酸、苯丙氨酸等1种糖和6种L型氨基酸激活。
Claims (5)
1.一种灵芝漆酶基因,其核苷酸序列如SEQ ID No 1所示。
2.根据权利要求1所述的灵芝漆酶基因,其编码的核苷酸序列如SEQ ID No2所示。
3.权利要求1所述的灵芝漆酶基因在真核生物中的表达。
4.根据权利要求3所述的灵芝漆酶基因在真核生物中的表达,其特征在于,将所述灵芝漆酶基因与真核表达载体pYM 7909连接,转化至毕赤酵母菌,进行点击转化。
5.权利要求3所述的灵芝漆酶基因在真核生物中的表达的应用,其特征在于,挑取经测活呈阳性的毕赤酵母进行细胞外分泌表达纯化,以制备纯化的灵芝漆酶基因。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201010598507.3A CN102533803B (zh) | 2010-12-21 | 2010-12-21 | 灵芝漆酶基因及其真核表达和纯化方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201010598507.3A CN102533803B (zh) | 2010-12-21 | 2010-12-21 | 灵芝漆酶基因及其真核表达和纯化方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102533803A true CN102533803A (zh) | 2012-07-04 |
CN102533803B CN102533803B (zh) | 2014-03-19 |
Family
ID=46341835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201010598507.3A Expired - Fee Related CN102533803B (zh) | 2010-12-21 | 2010-12-21 | 灵芝漆酶基因及其真核表达和纯化方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102533803B (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103045620A (zh) * | 2012-12-31 | 2013-04-17 | 上海市农业科学院 | 来源于灰盖鬼伞菌的漆酶2基因及其应用 |
CN112575007A (zh) * | 2020-12-29 | 2021-03-30 | 南京农业大学 | 灵芝丙酮酸转运蛋白基因在调控灵芝纤维素酶活性中的应用 |
CN113046334A (zh) * | 2021-04-14 | 2021-06-29 | 成都信息工程大学 | 一种混菌固态发酵三七渣生产漆酶的方法 |
-
2010
- 2010-12-21 CN CN201010598507.3A patent/CN102533803B/zh not_active Expired - Fee Related
Non-Patent Citations (4)
Title |
---|
H. X. WANG等: "A laccase from the medicinal mushroom Ganoderma lucidum", 《APPL MICROBIOL BIOTECHNOL》 * |
HUANG,X.-L等: "GenBank: ACR24357.1", 《GENBANK》 * |
SEONG SOO JOO等: "Molecular Cloning and Expression of a Laccase from Ganoderma lucidum, and Its Antioxidative Properties", 《MOLECULES AND CELLS》 * |
张银波等: "灵芝(Ganoderma lucidum)漆酶基因的克隆及其序列分析", 《中国生物化学与分子生物学报》 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103045620A (zh) * | 2012-12-31 | 2013-04-17 | 上海市农业科学院 | 来源于灰盖鬼伞菌的漆酶2基因及其应用 |
CN112575007A (zh) * | 2020-12-29 | 2021-03-30 | 南京农业大学 | 灵芝丙酮酸转运蛋白基因在调控灵芝纤维素酶活性中的应用 |
CN113046334A (zh) * | 2021-04-14 | 2021-06-29 | 成都信息工程大学 | 一种混菌固态发酵三七渣生产漆酶的方法 |
Also Published As
Publication number | Publication date |
---|---|
CN102533803B (zh) | 2014-03-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Pizzetti et al. | Temporal variability of coastal Planctomycetes clades at Kabeltonne station, North Sea | |
Franks et al. | Inhibition of fungal colonization by Pseudoalteromonas tunicata provides a competitive advantage during surface colonization | |
Limei et al. | Phylogenetic diversity and specificity of bacteria associated with Microcystis aeruginosa and other cyanobacteria | |
Chen et al. | Detection of N2O-producing fungi in environment using nitrite reductase gene (nirK)-targeting primers | |
Frikha Dammak et al. | Antagonistic properties of some halophilic thermoactinomycetes isolated from superficial sediment of a solar saltern and production of cyclic antimicrobial peptides by the novel isolate Paludifilum halophilum | |
CN104109659A (zh) | 羧酸酯酶、其编码基因及其应用 | |
CN103911400A (zh) | 一种采用全细胞转化高效生产α-酮戊二酸的方法 | |
CN102533803B (zh) | 灵芝漆酶基因及其真核表达和纯化方法 | |
Balabanova et al. | An extracellular S1-type nuclease of marine fungus Penicillium melinii | |
CN103103234A (zh) | 利用固定化酶合成烟酰胺腺嘌呤二核苷酸(nad)的方法 | |
KR101303839B1 (ko) | 슈도알테로모나스 속 균주가 생산하는 베타-아가라제 | |
CN104152472A (zh) | 一种双鸟苷酸环化酶基因、载体、工程菌及其应用 | |
CN103045620A (zh) | 来源于灰盖鬼伞菌的漆酶2基因及其应用 | |
CN108795955B (zh) | 一种硝基还原酶基因cnrB及其编码的蛋白和应用 | |
CN103382464B (zh) | 来源于超嗜热古菌的酰胺酶及其编码基因与应用 | |
CN104987367A (zh) | 人工抗菌肽pr39-r1t的制备方法及其应用 | |
CN110055268A (zh) | 水解酶基因ameH及其编码的蛋白和应用 | |
CN104164441A (zh) | 三个抗草丁膦水稻细胞质型谷氨酰胺合成酶突变体 | |
Gilavand et al. | L-asparaginase-producing Rouxiella species isolation, antileukemia activity evaluation, and enzyme production optimization | |
CN103937842A (zh) | 一种提高全细胞转化生产α-酮戊二酸产量的方法 | |
CN106434710A (zh) | 一种耐热精氨酸酶的基因表达序列和应用 | |
CN101914476A (zh) | 一种深海弹性蛋白酶基因及其制备方法与应用 | |
CN110423796A (zh) | 一种提高核酸体外扩增反应效率的方法 | |
WO2017215174A1 (zh) | 一种海洋细菌基因LfliZ及应用 | |
CN102533816B (zh) | 一种来自极端嗜碱菌的β-葡萄糖苷酶基因及其合成、表达和纯化 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20190717 Address after: 201106 Shanghai city Minhang District North Zhai Road No. 2901 Co-patentee after: SHANGHAI BAIXIN BIO-TECH Co.,Ltd. Patentee after: Shanghai Academy of Agricultural Sciences Address before: 201106 Shanghai city Minhang District North Zhai Road No. 2901 Patentee before: Shanghai Academy of Agricultural Sciences |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 |