Abstract：
:Two affinity columns comprising immobilized concanavalin A (Con A), Con A-Sepharose and Con A-XP3507, were evaluated for their purifying ability for the glycoprotein allergen Ag7 from a partially purified extract of mugwort pollen. The most pronounced difference between the two columns was the nature of their nonspecific interactions; hydrophobic interactions were dominant with Con A-XP3507, whereas ionic interactions were dominant with Con A-Sepharose. Both Con A-columns were effective for purifying Ag7 with a recovery of 50% after specific elution with displacing sugars. The inclusion of 1.0 M NaCl and 20% ethylene glycol in the elution medium was useful for desorbing nonspecifically bound material, prior to specific elution of adsorbed Ag7 in the presence of the displacing sugars, alpha-methyl glucoside and alpha-methyl mannoside. The most efficient purification of Ag7 was achieved with Con A-Sepharose at room temperature rather than at 4 degrees C. Affinity chromatography with Con A-XP3507 resulted in a slightly more contaminated product (purity 54%) than with Con A-Sepharose (purity 64%).
journal_name
J Biotechnoljournal_title
Journal of biotechnologyauthors
Nilsen BM,Smestad Paulsen B,Clonis Y,Mellbye KSdoi
10.1016/0168-1656(90)90044-csubject
Has Abstractpub_date
1990-11-01 00:00:00pages
305-16issue
3-4eissn
0168-1656issn
1873-4863pii
0168-1656(90)90044-Cjournal_volume
16pub_type
杂志文章abstract：:Human prolactin (hPRL) is a 199 aminoacid protein hormone with a wide spectrum of biological activities which is best known for its stimulation of lactation and development of mammary gland. This protein contains only one potential asparagine-linked glycosylation site, which is partially (10-30%) occupied when the pro...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2009.12.019
更新日期：2010-02-15 00:00:00
abstract：:Candida antarctica lipase B (CALB) has been employed as an efficient catalyst in the preparation of many flavor esters. A CALB-displaying yeast whole-cell biocatalyst could be an attractive alternative to commercial immobilized CALB because of its low-cost preparation and high enzymatic activity. We investigated the p...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2012.02.013
更新日期：2012-05-31 00:00:00
abstract：:A reagentless carbon paste electrode chemically modified with covalently bound alcohol oxidase and horse-radish peroxidase was examined as a selective sensor in flow injection and column liquid chromatography. A combination of carbodiimide, glutaraldehyde, and polyethyleneimine was used for immobilizing the enzymes in...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/0168-1656(93)90076-y
更新日期：1993-12-01 00:00:00
abstract：:Environmental gradient is an important common issue during scale-up process for protein production. To address the dynamic regulatory mechanism of Aspergillus niger being exposed to inhomogeneous glucose concentrations, glucose perturbation were experimented on the steady state of A. niger chemostat culture, and dynam...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2018.08.005
更新日期：2018-12-10 00:00:00
abstract：:Dual nutrient limited growth, the control of the cell growth rate (kinetic aspect) or the restriction of the amount of biomass (stoichiometric aspect) by two nutrients at the same time, is a relatively unknown ability of the microorganisms and consequently, still not mentioned in textbooks to date. Nevertheless, multi...
journal_title：Journal of biotechnology
pub_type： 杂志文章,评审
doi：10.1016/j.jbiotec.2004.03.030
更新日期：2004-09-30 00:00:00
abstract：:The miniaturization of analytical devices by micromachining technology is destined to have a major impact on medical and bioanalytical fields. To meet the current demands for rapid DNA amplification, various instruments and innovative technologies have been introduced by several groups in recent years. The development...
journal_title：Journal of biotechnology
pub_type： 杂志文章,评审
doi：10.1016/s1389-0352(01)00033-2
更新日期：2001-12-01 00:00:00
abstract：:New methods for an extended physiological characterization of yeast at a microtiter plate scale were applied to 27 deletion mutants of Saccharomyces cerevisiae cultivated on glucose and galactose as sole carbon sources. In this way, specific growth rates, specific rates of glucose consumption and ethanol production we...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2007.08.043
更新日期：2007-12-01 00:00:00
abstract：:E-lysis of Ralstonia eutropha H16, which belongs to the beta-subclass, was undertaken to verify whether transmembrane tunnel formation is possible in bacteria which do not belong to the enterobacteriaceae. For this purpose, a new gene E expression plasmid, pKG12, with two origins of replication, oriV and oriT, from pl...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/s0168-1656(98)00128-x
更新日期：1998-12-11 00:00:00
abstract：:Directed evolution was used to expand the substrate specificity and functionality of glycine oxidase by using a high-throughput screening assay based on the 4-aminoantipyrine peroxidase system, with a coefficient of variance below 4%. After screening the library, one mutant with the desired changes was found. The muta...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2007.07.950
更新日期：2008-01-01 00:00:00
abstract：:Glutathione (GSH) is an important bioactive tripeptide and widely used in food, medicine and other industries. Recently, the bifunctional glutathione synthetase, GshF, has been applied for efficient GSH production under inducible promoter. In this study, the constitutive expression of GshF from Streptococcus sanguinis...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2018.11.001
更新日期：2019-01-10 00:00:00
abstract：:Oleaginous yeast Trichosporon cutaneum demonstrated excellent lipid accumulation performance and inhibitor tolerance derived from lignocellulose pretreatment. Here we firstly report a 30.45Mb assembly genome of T. cutaneum ACCC 20271 for understanding the microbial lipid biosynthesis and mechanism of inhibitor toleran...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2016.04.043
更新日期：2016-06-20 00:00:00
abstract：:Insertion of foreign DNA into plant genomes occurs randomly and with low frequency. Hence, a selectable marker is generally required to identify transgenic plants. Until now, all selection systems have been based on the use of non-plant genes, derived from microorganisms and usually conferring antibiotic or herbicide ...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2005.08.033
更新日期：2006-02-10 00:00:00
abstract：:Beta-glucosidase genes of fungal origins were isolated and heterologously expressed in Saccharomyces cerevisiae to enable growth on the disaccharide, cellobiose. To promote secretion of the beta-glucosidases, the genes were fused to the secretion signal of the Trichoderma reesei xyn2 gene and constitutively expressed ...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2005.06.013
更新日期：2005-11-21 00:00:00
abstract：:Glucose oxidase (GOD) was immobilized on cellulose acetate-polymethylmethacrylate (CA-PMMA) membrane. The immobilized GOD showed better performance as compared to the free enzyme in terms of thermal stability retaining 46% of the original activity at 70 degrees C where the original activity corresponded to that obtain...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2005.08.019
更新日期：2006-02-10 00:00:00
abstract：:The hematopoietic system represents an interesting model for gene transfer protocols. Here, we have evaluated the efficiency of a gene transfer system using the polycationic compound SuperFect (Qiagen) and the K562 hematopoietic cell line. Transient and stable vectors carrying the enhanced green fluorescent protein (E...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/s0168-1656(01)00276-0
更新日期：2001-06-15 00:00:00
abstract：:Survival of media-suspended porcine erythrocytes exposed to various hydrodynamic environments was investigated with and without such shear protectant additives as bovine serum albumin, dextran and the non-ionic surfactant Pluronic F68. Erythrocytes provided a model cell population with cells of a uniform size, metabol...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/0168-1656(95)00111-8
更新日期：1995-11-21 00:00:00
abstract：:Polyhydroxyalkanoates (PHA), a family of diverse bio-polyesters, are produced by many bacteria as an energy and carbon storage material. PHA synthesis regulatory protein PhaR was reported to attach on the surface of intracellular PHA granules for convenience of synthesis regulation. PhaR was found to have an amphiphil...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2013.04.017
更新日期：2013-06-20 00:00:00
abstract：:Photorhabdus temperata subsp. thracensis 39-8(T), a symbiotic bacterium from an entomopathogenic nematode Heterorhabditis bacteriophora, is a novel bacterium harboring insect pathogenicity. Herein, we present the complete genome sequence of strain 39-8(T), which consists of one circular chromosome of 5,147,098 bp with...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2015.09.024
更新日期：2015-11-20 00:00:00
abstract：:In earlier study from our group, cholera toxin B subunit had been expressed in tomato for developing a plant-based vaccine against cholera. In the present investigation, gene for accessory colonization factor (acf) subunit A, earlier reported to be essential for efficient colonization in the intestine, has been expres...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2008.03.002
更新日期：2008-05-20 00:00:00
abstract：:Magnetic particles produced by magnetic bacteria have been used to carry out magnetic separation of DNA. Separation was achieved using magnetite coated with 3-aminopropyltriethoxysilane, N-(trimethoxy-silylpropyl) isothiouronium chloride or 3-[2-(2-aminoethyl)-ethylamino]-propyltrimethoxysilane (AEEA). The DNA binding...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/s0168-1656(01)00427-8
更新日期：2002-04-11 00:00:00
abstract：:N-Acetylneuraminic acid, an important component of glycoconjugates with various biological functions, can be produced from N-acetyl-D-glucosamine (GlcNAc) and pyruvate using a one-pot, two-enzyme system consisting of N-acyl-D-glucosamine 2-epimerase (AGE) and N-acetylneuraminate lyase (NAL). In this system, the epimer...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2013.07.003
更新日期：2013-11-01 00:00:00
abstract：:The aim of this study is to evaluate the utility of using aerobic acetate-fed microbial granules as a starting seed to rapidly develop stable aerobic phenol-degrading granules. Aerobic granules were first cultivated in four sequencing batch reactors with acetate as sole carbon source at a loading rate of 3.8 kg m(-3) ...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2004.09.008
更新日期：2005-02-23 00:00:00
abstract：:Oleaginous microalgae have received a considerable attention as potential biofuel feedstock. However, lack of industry-suitable strain with lipid rich biomass limits its commercial applications. Targeted engineering of lipogenic pathways represents a promising strategy to enhance the efficacy of microalgal oil product...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2016.05.005
更新日期：2016-07-10 00:00:00
abstract：:In monitoring and controlling wastewater treatment processes, on-line information of nutrient dynamics is very important. However, these variables are determined with a significant time delay. Although the final effluent quality can be analyzed after this delay, it is often too late to make proper adjustments. In this...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/s0168-1656(99)00171-6
更新日期：1999-10-08 00:00:00
abstract：:To develop a receptor-mediated intracellular delivery system that can transport therapeutic proteins to specific tumor cells, folate-poly(ethylene glycol)-grafted-trimethylchitosan (folate-PEG-g-TMC) was synthesized. Nano-scaled spherical polyelectrolyte complexes between the folate-PEG-g-TMC and fluorescein isothiocy...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2009.09.007
更新日期：2010-01-01 00:00:00
abstract：:The current validated endotoxin detection methods, in spite of being highly sensitive, present several drawbacks in terms of reproducibility, handling and cost. Therefore novel approaches are being carried out in the scientific community to overcome these difficulties. Remarkable efforts are focused on the development...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2014.06.018
更新日期：2014-09-30 00:00:00
abstract：:In this work, a proof of concept elastin-like polypeptide-Z domain fusion (ELP-Z) based monoclonal antibody (mAb) affinity precipitation process is developed using scaled-down filtration techniques. Tangential flow filtration (TFF) is examined for the recovery of ELP-Z-mAb precipitates formed during the mAb binding st...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2014.09.020
更新日期：2014-12-20 00:00:00
abstract：:The successful transfer of human embryonic stem cell (hESC) technology and cellular products into clinical and industrial applications needs to address issues of automation, standardization and the generation of relevant cell numbers of high quality. In this study, we combined microcarrier technology and controlled st...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2010.06.015
更新日期：2010-08-02 00:00:00
abstract：:The study describes extraction of extracellular polymeric substances (EPS) from sewage sludge by applying enzymes and enzymes combined with sodium tripolyphosphate (STPP). Additionally, a systematic study of two non-enzymatic extraction agents is described. The assessment of the released products is made by colorimetr...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2007.04.005
更新日期：2007-06-30 00:00:00
abstract：:The two main sugars in the agricultural by-product corn stover are glucose and xylose. Co-fermentation of glucose and xylose at high content of water-insoluble solids (WIS) without detoxification is a prerequisite to obtain high ethanol concentration and to reduce production costs. A recombinant strain of Saccharomyce...
journal_title：Journal of biotechnology
pub_type： 杂志文章
doi：10.1016/j.jbiotec.2006.05.001
更新日期：2006-12-01 00:00:00
