DICP OpenIR
Over-expression, purification, and characterization of recombinant NAD-malic enzyme from Escherichia coli K12
Wang, Jinxia; Tan, Haidong; Zhao, Zongbao (Kent)
KeywordMalic Enzyme Escherichia Coli K12 Over-expression Enzyme Kinetics
Source PublicationPROTEIN EXPRESSION AND PURIFICATION
2007-05-01
DOI10.1016/j.pep.2006.11.017
Volume53Issue:1Pages:97-103
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS SubjectBiochemical Research Methods ; Biochemistry & Molecular Biology ; Biotechnology & Applied Microbiology
WOS Research AreaBiochemistry & Molecular Biology ; Biotechnology & Applied Microbiology
WOS KeywordPOLYACRYLAMIDE-GEL ELECTROPHORESIS ; MOLECULAR-WEIGHTS ; COLI ; BINDING ; CLONING ; GENE ; SITE ; RESIDUES ; PIGEON
AbstractNAD+-dependent malic enzyme (NAD-ME) gene from Escherichia coli K12 was inserted into an expression vector pET24b(+) and transformed into E coli BL21 (DE3). Recombinant NAD-ME was expressed upon IPTG induction, purified with affinity chromatography, and biochemically characterized. The results showed that recombinant NAD-ME could be produced mainly in a soluble form. The monomeric molecular weight of recombinant NAD-ME was about 65 kDa, whereas monomer, homotetramer, and homooctamer were formed in solution as revealed by nondenaturing polyacrylamide gel electrophoresis analysis. Finally, the K-m, values of NAD-ME for L-malate and NAD were determined as 0.420 +/- 0.174 and 0.097 +/- 0.038 mM, respectively, at pH 7.2. By using this over-expression and purification system, recombinant E coli K12 NAD-ME can now be obtained in large quantity necessary for further biochemical characterization and applications. (c) 2006 Elsevier Inc. All rights reserved.
Language英语
WOS IDWOS:000246245000011
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/140630
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Jinxia,Tan, Haidong,Zhao, Zongbao . Over-expression, purification, and characterization of recombinant NAD-malic enzyme from Escherichia coli K12[J]. PROTEIN EXPRESSION AND PURIFICATION,2007,53(1):97-103.
APA Wang, Jinxia,Tan, Haidong,&Zhao, Zongbao .(2007).Over-expression, purification, and characterization of recombinant NAD-malic enzyme from Escherichia coli K12.PROTEIN EXPRESSION AND PURIFICATION,53(1),97-103.
MLA Wang, Jinxia,et al."Over-expression, purification, and characterization of recombinant NAD-malic enzyme from Escherichia coli K12".PROTEIN EXPRESSION AND PURIFICATION 53.1(2007):97-103.
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