Abstract:
:A soluble glucoside 3-dehydrogenase (G3DH) was purified from a newly isolated Sphingobacterium faecium ZJF-D6 CCTCC M 2013251. The enzyme was purified to 35.71-fold with a yield of 41.91 % and was estimated by sodium dodecyl sulphate-polyacrylamide gel electrophoresis with a molecular mass of 62 kDa. The sequences of two peptides of the enzyme were all contained in a GMC family oxidoreductase (EFK55866) by mass spectrometry analysis. The optimal pH of the enzyme was around 6.2. The enzyme was stable within a pH range of 5.0-6.6 and was sensitive to heat. G3DH from S. faecium exhibited extremely broad substrate specificity and well regioselectivity to validoxylamine A. The enzyme was completely inhibited by Hg2Cl2 and partly inhibited by Cu(2+), Fe(2+), Ca(2+), and Cd(2+). The apparent K m values for D-glucose, sucrose, and validoxylamine were calculated to be 1.1, 1.7, and 2.1 mM, respectively. With this purified enzyme, 3-keto sucrose was prepared at pH 5.0, 30 °C for 10 h with a yield of 28.7 %.
journal_name
Appl Biochem Biotechnoljournal_title
Applied biochemistry and biotechnologyauthors
Zhang JF,Yang B,Chen W,Chen Jdoi
10.1007/s12010-014-0816-3subject
Has Abstractpub_date
2014-04-01 00:00:00pages
3913-25issue
8eissn
0273-2289issn
1559-0291journal_volume
172pub_type
杂志文章abstract::Success in generating catalytic antibodies as enzyme mimics lies in the strategic design of the transition-state analog (TSA) for the reaction of interest, and careful development of screening processes for the selection of antibodies that are catalysts. Typically, the choice of TSA structure is straightforward, and t...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:83:1-3:195
更新日期:2000-01-01 00:00:00
abstract::Numerous microcapsule systems have been developed for a wide range of applications, including the sustained release of drugs, cell transplantation for therapy, cell immobilization, and other biotechnological applications. Despite the fact that microcapsule membrane is a dominant factor governing overall microcapsule p...
journal_title:Applied biochemistry and biotechnology
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doi:10.1385/abab:134:3:207
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pub_type: 杂志文章
doi:10.1007/s12010-020-03318-6
更新日期:2020-10-01 00:00:00
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doi:10.1007/s12010-019-03090-2
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journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-009-8669-x
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pub_type: 杂志文章
doi:10.1007/s12010-014-0937-8
更新日期:2014-07-01 00:00:00
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journal_title:Applied biochemistry and biotechnology
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abstract::The present study was carried out to understand the effect of cortisol on caspase expression in the C2C12 and 3 T3-L1 cells under co-culture system. Cells were co-cultured by using transwell inserts with a 0.4-μm porous membrane to separate C2C12 and 3 T3-L1 preadipocyte cells. Each cell type was grown independently o...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-0909-z
更新日期:2014-06-01 00:00:00
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journal_title:Applied biochemistry and biotechnology
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doi:10.1007/s12010-015-1771-3
更新日期:2015-10-01 00:00:00
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journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-010-9009-x
更新日期:2010-12-01 00:00:00
abstract::Qualitative and quantitative DNA-based methods were applied to detect genetically modified foods in samples from markets in the Kingdom of Saudi Arabia. Two hundred samples were collected from Al-Qassim, Riyadh, and Mahdina in 2009 and 2010. GMOScreen 35S and NOS test kits for the detection of genetically modified org...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-013-0405-x
更新日期:2013-10-01 00:00:00
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journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-013-0709-x
更新日期:2014-03-01 00:00:00
abstract::A new, simple, and original method is described for specific measurement of polyunsaturated fatty acid content in olive oil. This analytical system uses coupled enzymes, lipase and lipoxygenase. The system consists of lipase-catalyzed hydrolysis of triacylglycerol and subsequent lipoxygenation of liberated polyunsatur...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-010-8935-y
更新日期:2010-11-01 00:00:00
abstract::Changes in protein glycosylation owing to changes in environmental conditions are not well understood. To better understand these relationships, methods to quantify controlling factors are needed. Because enzymes are translated from genes, the ability to quantify gene expression levels for glycosylation-related enzyme...
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pub_type: 杂志文章
doi:10.1385/abab:125:3:159
更新日期:2005-06-01 00:00:00
abstract::Large-volume parenteral solutions were submitted to heat treatments after being inoculated with Bacillus stearothermophilus ATCC 7953 (Tr = 121 degrees C) and Bacillus subtilis ATCC 9372 (Tr = 104.5 degrees C) spores. The average decimal reduction time for B. stearothermophilus ranged from a D121 degrees C value of 1....
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:98-100:1-9:539
更新日期:2002-04-01 00:00:00
abstract::Copper (II) oxide nanoparticles (CuO-NPs) have been studied as potential antimicrobial agents, similar to silver or platinum nanoparticles. However, the use of excess NPs is limited by their safety and toxicity in beneficial microflora and human cells. In this study, we evaluated the cytotoxicity of CuO-NPs by coating...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-019-03108-9
更新日期:2020-02-01 00:00:00
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journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:125:1:027
更新日期:2005-04-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1007/s12010-016-2142-4
更新日期:2016-11-01 00:00:00
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更新日期:2016-12-01 00:00:00
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pub_type: 杂志文章
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