Abstract:
:To develop more potent thrombolytic agents with fibrinolytic and antiplatelet aggregation activity, staphylokinase (Sak) variant Y1-Sak, a recombinant mutant of the Staphylococcus aureus protein Sak, was constructed. Y1-Sak formed an insoluble inclusion body when overexpressed in Escherichia coli strain JF1125. To obtain an optimized refolding process, dilution refolding was used to optimize refolding conditions. The results revealed that additive L: -arginine and refolding temperature played critical roles in the refolding of Y1-Sak. Subsequently, two refolding methods, gel filtration and reverse dilution, were investigated to refold Y1-Sak. The results indicated that the fibrinolytic activity and recovery of Y1-Sak from gel filtration were lower than those from reverse dilution. Reverse dilution refolding successfully reduced the side reaction of refolding with the help of L: -arginine, and the fibrinolytic activity and recovery of Y1-Sak were significantly improved. Functional analysis revealed that refolded Y1-Sak by reverse dilution possessed fibrinolytic and antiplatelet aggregation activities. Moreover, the immunogenicity of Y1-Sak was significantly reduced.
journal_name
Appl Biochem Biotechnoljournal_title
Applied biochemistry and biotechnologyauthors
He J,Wang G,Xu R,Feng J,Wang J,Su H,Song Hdoi
10.1007/s12010-008-8150-2subject
Has Abstractpub_date
2008-10-01 00:00:00pages
29-41issue
1eissn
0273-2289issn
1559-0291journal_volume
151pub_type
杂志文章abstract::We screened about a hundred microorganisms (including unidentified yeasts, fungi, and bacteria) for their ability to produce xylanolytic enzymes. About 40 of them were hemicellulolytic; among these, we selected Penicillium canescens 10-10c for detailed study because of its ability to produce an interesting enzymatic c...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/BF02787840
更新日期:1997-07-01 00:00:00
abstract::A new colorimetric chemosensor for naked-eye detection and determination of cysteine (Cys) based on indicator displacement assay (IDA) was designed using 1-(2-pyridylazo)-2-naphthol (PAN). The indicator exchange occurred between PAN and Cys by the addition of Cys to the Cu(PAN)2 complex, which is accomplished by an im...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-019-03165-0
更新日期:2020-09-01 00:00:00
abstract::In previous work, purification procedures and zymogram analysis conducted with supernatants of crude extracts from aerobic mycelium of the YR-1 strain of Mucor circinelloides isolated from petroleum-contaminated soils indicated the existence of only one soluble alcohol oxidase (sAO) activity. In the present work enzym...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:121:1-3:0205
更新日期:2005-04-01 00:00:00
abstract::Protein A of Staphylococcus aureus has been widely used as an affinity ligand for the purification of immunoglobulin. However, the low elution pH and the sensitivity to alkaline condition restricted the large-scale application of antibody purification. To overcome these disadvantages, the B domain was selected and mut...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-0818-1
更新日期:2014-04-01 00:00:00
abstract::Methods for isothermal amplification of nucleic acids are gained more attention in the last two decades. For isothermal amplification, DNA polymerases with strand displacement activity are required, and Bst exo- is one of the most commonly used polymerases. However, Bst exo- is able to cause nonspecific DNA amplificat...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-019-03127-6
更新日期:2020-02-01 00:00:00
abstract::The effect of methanol on trichloroethylene (TCE) degradation by mixed and pure methylotrophic cultures was examined in batch culture experiments. Methanol was found to relieve growth inhibition of Methylosinus trichosporium (OB3b) at high (14 mg/L) TCE concentrations. Degradation of TCE was determined by both radiola...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/BF02922658
更新日期:1991-04-01 00:00:00
abstract::Based on the p426 series of expression vectors developed by Mumberg et al. (Gene 156, 119-122, 1995), we have generated a set of plasmids that allow the glucose-dependent expression of target genes in the yeast, Saccharomyces cerevisiae. The ADH1 promoter in plasmid p426-ADH1 was replaced by the 1-kb 5'-region from ei...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-010-9099-5
更新日期:2011-04-01 00:00:00
abstract::Dual-responsive poly(N,N-diethylacrylamide) (PDEA) hydrogel films with entrapped horseradish peroxidase (HRP) and glucose oxidase (GOD) were successfully prepared on electrode surface with a simple one-step polymerization procedure under mild conditions, designated as PDEA-HRP-GOD. Cyclic voltammetric (CV) response of...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-0987-y
更新日期:2014-08-01 00:00:00
abstract::Detection of minute quantities of target antigens in serum samples (consisting of a mixture of proteins/biomolecules) can be achieved by enhancement of the capture efficiencies of heterogeneous immunosensors. An important process parameter which affects the capture of target analytes in such immunosensors is the pH of...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-018-2883-3
更新日期:2019-04-01 00:00:00
abstract::Corn stover has potential as a resource for both fiber and chemical needs if separation strategies can be developed to deal with its heterogeneity. Relative hydrolysis characteristics were assessed for pith (sclerenchyma and parenchyma) and fiber (collenchyma) tissue fractions derived from mechanical separation of cor...
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
abstract::A spectrophotometric method of measuring oxygenase activity in cell extracts or in zymograms was developed. It is an easy and cheap method that allows spectrophotometric measurement of activity by a colored reaction and reveals activity bands in a polyacrylamide gel electrophoresis (PAGE) gel as brown bands. To prove ...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:108:1-3:725
更新日期:2003-04-01 00:00:00
abstract::Proteases constitute one of the most important groups of industrial enzymes, accounting for at least 25% of the total enzyme sales, with two-thirds of the proteases produced commercially being of microbial origin. Immobilized enzymes are currently the subject of considerable interest because of their advantages over s...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:
更新日期:2006-04-01 00:00:00
abstract::Alpha-lactalbumin hydrolysate is of significant interest, due to its potential application as a source of bioactive peptides in nutraceutical and pharmaceutical domains. This study was focused on the cholecystokinin (CCK) family compounds which are small peptides involved in the satiety control. The action of chymotry...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-011-9344-6
更新日期:2011-11-01 00:00:00
abstract::Microalgae have tremendous potential as a renewable feedstock for the production of liquid transportation fuels. In natural waters, the importance of physical associations and biochemical interactions between microalgae and bacteria is generally well appreciated, but the significance of these interactions to algal bio...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-0980-5
更新日期:2014-08-01 00:00:00
abstract::Equipment and procedures were developed to study the conversion of lignocellulosic biomass to carboxylic acids using high-solids countercurrent fermentations. Countercurrent fermentations of cattle manure yielded a rapid fermentation (maximum 2.98 g of total acid/[L x d]) with high acid concentrations (maximum of 32.5...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:94:2:111
更新日期:2001-05-01 00:00:00
abstract::The rheological behavior of a sulfated galactan extracted from Halymenia durvillei, a red seaweed collected in the coastal waters of a small island of Madagascar (Nosy-be in Indian Ocean), was investigated in dilute and semi-dilute solutions. In dilute solution with NaCl at 0.3 M, the polysaccharide adopted a coil con...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-012-9605-z
更新日期:2012-07-01 00:00:00
abstract::L-Asparaginase (ASNase) has proved its use in medical and food industries. Sequence-based screening showed the thermophilic Streptomyces strain Streptomyces thermoluteus subsp. fuscus NBRC 14270 (14270 ASNase) to positive against predicted ASNase primary sequences. The 14270 ASNase gene and four L-asparaginase genes f...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-010-9087-9
更新日期:2011-04-01 00:00:00
abstract::An extracellular lipase was purified from the fermentation broth of Penicillium expansum PED-03 by DEAE-Sepharose chromatography, followed by sephacryl S-200 chromatography. The enzyme was purified 81.8-fold with 19.8% recovery and a specific activity of 85.94 U/mg. The molecular weight of the homogeneous enzyme was a...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-007-0043-2
更新日期:2007-08-01 00:00:00
abstract::The gene encoding a thermostable β-D-xylosidase (GbtXyl43B) from Geobacillus thermoleovorans IT-08 was cloned in pET30a and expressed in Escherichia coli; additionally, characterization and kinetic analysis of GbtXyl43B were carried out. The gene product was purified to apparent homogeneity showing M r of 72 by sodium...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-013-0329-5
更新日期:2013-08-01 00:00:00
abstract::This study deals with the utilization of chicken feather waste as a substrate for anaerobic digestion and improving biogas production by degradation of the compact structure of the feather keratin. In order to increase the digestibility of the feather, different pretreatments were investigated, including thermal pretr...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-013-0116-3
更新日期:2013-04-01 00:00:00
abstract::Label-free detection technique based on impedance was investigated for aflatoxin M1 (AFM1) and aflatoxin M2 (AFM2) analysis in milk products. The impedance change resulting from antigen-antibody interaction was studied using a two-electrode setup made up of silver (Ag) wire. Processed milk such as drinking yogurt and ...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-0995-y
更新日期:2014-10-01 00:00:00
abstract::Bioethanol is considered a potential liquid fuel that can be produced from biomass by fermentation and distillation. Although most of the water is removed by distillation, the purity of ethanol is limited to 95-96 % due to the formation of a low-boiling point, water-ethanol azeotrope. To improve the use of ethanol as ...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-012-0076-z
更新日期:2013-02-01 00:00:00
abstract::Agar, a major polysaccharide of red algal cells, is degraded by β-agarases into neoagarobiose, which is further hydrolyzed into the monomers, D-galactose and 3,6-anhydro-L-galactose, by 1,3-α-3,6-anhydro-L-galactosidases including α-1,3-L-neoagarooligasaccharide hydrolase (α-NAOSH). A novel cold-adapted alkaline α-NAO...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-019-02963-w
更新日期:2019-08-01 00:00:00
abstract::During glycerol fed-batch fermentation, the process could be divided into multiple equal subintervals, and the feed operation was performed in pulse form at the start of each subinterval. Based on the macrokinetic models, the multipulse feed strategy for both glucose and corn steep slurry was determined by a general n...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:95:2:103
更新日期:2001-08-01 00:00:00
abstract::A new process for enzymatic synthesis of biodiesel at high water content (10-20%) with 96% conversion by lipase from Candida sp. 99-125 was studied. The lipase, a no-position-specific lipase, was immobilized by a cheap cotton membrane and the membrane-immobilized lipase could be used at least six times with high conve...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:128:2:109
更新日期:2006-02-01 00:00:00
abstract::Aldehyde dehydrogenase (E.C. 1.2.1.x) can catalyze detoxification of acetaldehydes. A novel acetaldehyde dehydrogenase (istALDH) from the non-Saccharomyces yeast Issatchenkia terricola strain XJ-2 has been previously characterized. In this work, Lactococcus lactis with the NIsin Controlled Expression (NICE) System was...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-017-2573-6
更新日期:2018-02-01 00:00:00
abstract::Formation of methane in the anodic chamber of a microbial fuel cell (MFC) indicates an energy inefficiency in electricity generation as the energy required for electrogenesis gets redirected to methanogenesis. The hypothesis of this research is that inhibition of methanogenesis in the mixed anaerobic anodic inoculum i...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-020-03458-9
更新日期:2020-11-16 00:00:00
abstract::Different treatments to improve the thermotolerance of fermenting yeasts for simultaneous ethanol saccharification and fermentation process of cellulosic materials have been examined. Yeasts of the genera Saccharomyces and Kluyveromyces were tested for growth and fermentation at progressively higher temperatures in th...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/BF02918990
更新日期:1993-04-01 00:00:00
abstract::Performance of microbial carbon capture cells (MCCs), having a low-cost clayware separator, was evaluated in terms of wastewater treatment and electricity generation using algae Chlorella pyrenoidosa in MCC-1 and Anabaena ambigua in MCC-2 and without algae in a cathodic chamber of MCC-3. Higher power production was ac...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-017-2485-5
更新日期:2017-11-01 00:00:00
abstract::One of the major limitations of effective nonviral gene carriers is their potential high cytotoxicity. Conjugation of polyethylene glycol (PEG) to polymers is a common approach to decrease toxicity and improve biodistribution. The aim of this study was to evaluate the effect of PEGylation on generation 5 polypropyleni...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-015-1723-y
更新日期:2015-09-01 00:00:00