Abstract:
:The thermal stability of most nitrile hydratases (NHase) is poor, which has been enhanced to some extent by molecular modifications in several specific regions of the C-terminal domain (C-domain) of β subunit of NHase. Since the C-domain could be present as a naturally separate domain in a few NHases, the whole C-domain is proposed to be related to the NHase stability. The chimeric NHase (SBpNHase) from the thermal-sensitive BpNHase (NHase from Bordetella petrii) and the relatively thermal-stable PtNHase (NHase from Pseudonocardia thermophila) was constructed by swapping the corresponding C-domains. After 30 min incubation at 50 °C, the original BpNHase nearly lost its activity, while the SBpNHase retained 50 % residual activity, compared with the melting temperature (Tm) (50 °C) of the original BpNHase, that of the SBpNHase was 55 °C. The SBpNHase with higher thermal stability would be useful for the thermal stability enhancement of NHase and for the understanding of the relationship between the stability of NHase and its structure.
journal_name
Appl Biochem Biotechnoljournal_title
Applied biochemistry and biotechnologyauthors
Sun W,Zhu L,Chen X,Wu L,Zhou Z,Liu Ydoi
10.1007/s12010-015-1961-zsubject
Has Abstractpub_date
2016-04-01 00:00:00pages
1481-7issue
8eissn
0273-2289issn
1559-0291pii
10.1007/s12010-015-1961-zjournal_volume
178pub_type
杂志文章abstract::Events from the past growth conditions influence the course of physiology, and it gets reflected in the present cell behaviour. During this process, cells acquire a metabolic option which carries signature of the past, and it dictates the performance in the present situation. Study uses Escherichia coli as a sample or...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-1167-9
更新日期:2014-11-01 00:00:00
abstract::Neoadjuvant chemotherapy (NACT) is known to be beneficial for patients with locally advanced breast cancer. However, there is still no unified standard on the evaluation of NACT. To identify the potential markers related to NACT sensitivity of breast cancer, in the present study, we examined the protein spectrum of br...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-011-9464-z
更新日期:2012-02-01 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::In this study, starches obtained from wheat, potato, and corn were used to synthesize cationic starches (CS), and the flocculation efficiency of these materials was tested with Chlorella pyrenoidosa and Botryococcus braunii cultures under different conditions. Our results indicated that these three CS had differing de...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-016-2202-9
更新日期:2017-01-01 00:00:00
abstract::Mycobacterium avium subsp. paratuberculosis heat shock protein 70 (MAPHsp70) is an immunodominant antigen, which can be used as a subunit vaccine against bovine paratuberculosis. In the present study, we evaluated the immunogenic activities of MAPHsp70 expressed by DNA vaccine in chicken and the use of prepared specif...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-012-9648-1
更新日期:2012-05-01 00:00:00
abstract::Fibrobacter succinogenes is a cellulolytic bacterium that degrades plant cell wall biomass in ruminant animals and is among the most rapidly fibrolytic of all mesophilic bacteria. The complete genome sequence of Fisuc was completed by the DOE Joint Genome Institute in late 2009. Using new expression tools developed at...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-010-9070-5
更新日期:2011-03-01 00:00:00
abstract::Streptomyces griseorubens JSD-1 is a novel actinomycete that could grow efficiently upon lignin, and the ligninolytic genes active in this biotransformation were expected to be crucial. To investigate the molecular mechanism of utilizing lignin, genome sequencing was carried out to obtain its draft genome, which was d...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-015-1594-2
更新日期:2015-05-01 00:00:00
abstract::In this study, we investigated the dynamics of a computer simulation of a continuous alcoholic fermentation process combined with a flash column under vacuum. The alcohol was partially extracted in order to maintain its concentration at about 40 kg/m3 in the fermentor. The mathematical model of the fermentation was de...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:84-86:1-9:577
更新日期:2000-04-01 00:00:00
abstract::In this study, the prokaryotic expression system of Escherichia coli was used to modify prolyl aminopeptidase derived from Aspergillus oryzae JN-412 (AoPAP) via random mutagenesis and site-directed saturation mutagenesis. A random mutant library with a capacity of approximately 3000 mutants was compiled using error-pr...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-020-03277-y
更新日期:2020-08-01 00:00:00
abstract::The effect of the addition of the nonionic surfactant tributylphenyltetraethoxylate to culture media on pH and extracellular protein content, and on production of beta-glucosidase, xylanase, laccase, and manganese-dependent and -independent peroxidases by the edible fungus Pleurotus ostreatus was determined. The relat...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:110:1:33
更新日期:2003-07-01 00:00:00
abstract::A new method without any special devices for direct transformation of linear gene cassettes was developed. Its feasibility was verified through 5'-fluorescent dye (fluorescein isothiocyanate, FITC)-labeled fluorescent tracing and transient expression of a gus reporter gene. Minimal linear gene cassettes, containing ne...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-009-8554-7
更新日期:2009-12-01 00:00:00
abstract::Serratia marcescens SP511 was previously reported to be an L-proline-producing strain that harbors a recombinant plasmid carrying the mutant type of the proline operon. This strain produced 65 g/L of L-proline in a medium containing 22% sucrose and urea after 5 d of incubation under the conventional culture conditions...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/BF02916452
更新日期:1993-12-01 00:00:00
abstract::An improved procedure has been developed for efficient somatic embryogenesis in Anethum graveolens. Green friable embryogenic callus was obtained from hypocotyl segments on medium augmented with 2,4-dichlorophenoxyacetic acid (2,4-D). The highest embryogenic callus induction frequency of 87 % was obtained on Murashige...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-1032-x
更新日期:2014-08-01 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::Rapid, accurate, and easy identification of pathogenic agents has always been important in medicine, veterinary, and agriculture. The brown spot infection is among the most common diseases in tangerine caused by Alternaria alternata. Due to the existence of seven various pathotypes of A. alternata species, it is chall...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-015-1939-x
更新日期:2016-03-01 00:00:00
abstract::Aspergillus niger CTBU isolated from local decayed bamboo shoot residue was employed to solid-state fermentation (SSF) of bamboo shoot residue to elevate the content of phytosterols. Strain acclimatization was carried out under the fermentation condition using bamboo shoot as substrate for fermentation performance imp...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-0821-6
更新日期:2014-04-01 00:00:00
abstract::Thermoacidophiles are microorganisms capable of optimum growth under a combination of high temperature and low pH. These microorganisms are a rich source of thermo- and acid- active/stable glycosyl hydrolases. Such enzymes could find use as novel biocatalysts in industrial processes, as operation at elevated temperatu...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-020-03233-w
更新日期:2020-07-01 00:00:00
abstract::Euryale ferox Salisbury is an important aquatic food plant cultivated largely in eastern India. E. ferox is a monotypic genus, and breeding programmes have mostly relied on the variability present in the primary gene pool. Knowledge of the genetic structure of the population is limited, and there are very few reports ...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-016-2171-z
更新日期:2016-12-01 00:00:00
abstract::Low-cost dried yeasts immobilized on delignified brewers' spent grains for use in wine making and brewing were produced by simple thermal drying techniques. To optimize the thermal drying process, vacuum and air stream conditions were examined. Drying of thin layers of the biocatalysts was performed at low (30-38 degr...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-009-8848-9
更新日期:2010-09-01 00:00:00
abstract::In recent years, the concept of producing biodiesel from renewable lipid sources has regained international attention. In Brazil, a national program was launched in 2002 to evaluate the technical, economic, and environmental competitiveness of biodiesel in relation to the commercially available diesel oil. Several res...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:123:1-3:0807
更新日期:2005-04-01 00:00:00
abstract::In this study, an efficient procedure was developed for callus induction and regeneration of kiwifruit (Actinidia deliciosa) using different organs of shoots developed under in vitro conditions. Effects of explants source and media (M(1), 1.0 mg l(-1) BA + 2.0 mg l(-1) 2,4-D-M(2), 1.0 mg l(-1) NAA + 2.0 mg l(-1) 2,4-D...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-008-8401-2
更新日期:2009-08-01 00:00:00
abstract::A genetically engineered Escherichia coli cell expressing both organophosphorus hydrolase (OPH) and carboxyl esterase (CaE) B1 intracellularly was constructed and cultivated. The harvested wet cells were vacuum dried, and the storage stability of the dried cell powder was determined in terms of OPH activity. Over a pe...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-007-9022-x
更新日期:2007-03-01 00:00:00
abstract::Recently, poly(3-hydroxybutyrate) (PHB) has been found in a few thermophilic strains where several advantages can be gained from running fermentation at high temperatures. Caldimonas manganoxidans, a thermophilic gram-negative bacterium, was investigated for the feasibility as a PHB-producing strain. It is suggested t...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-016-2138-0
更新日期:2016-11-01 00:00:00
abstract::Cross-linked enzyme aggregates (CLEAs) are a versatile and effective method for enzyme immobilization, which is exquisitely simple and amenable to rapid optimization. In this study, nature egg white, which is low cost, easily available, and nontoxic, was used as protein feeder to replace traditional protein feeder (bo...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-013-0697-x
更新日期:2014-03-01 00:00:00
abstract::A multi-method protocol previously proposed for the extraction of extracellular polymeric substances (EPS) from flocculated sludges was investigated on dense aerobic granules. The protocol combines mechanical disruption by sonication and chemical extraction using the Tween detergent and the cation chelator, EDTA. Poly...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-012-9569-z
更新日期:2012-04-01 00:00:00
abstract::γ-Aminobutyric acid (γ-GABA) is a non-proteinogenic amino acid, which acts as a major regulator in the central nervous system. Glutamate decarboxylase (namely GAD, EC 4.1.1.15) is known to be an ideal enzyme for γ-GABA production using L-glutamic acid as substrate. In this study, we cloned and expressed GAD gene from ...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-017-2506-4
更新日期:2017-12-01 00:00:00
abstract::A new medical application of an immobilized microbial enzyme is described. Extracorporeal devices require systemic heparin administration to prevent thrombus formation; however, the use of heparin often leads to serious hemorrhagic complications. Heparinase isolated from Flavobacterium has been immobilized and used in...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/BF02798373
更新日期:1984-02-01 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
pub_type: 杂志文章
doi:10.1385/abab:134:3:207
更新日期:2006-09-01 00:00:00
abstract::Chemical composition of Larrea tridentata leaves was determined and elevated content of lignin (35.96 % w/w) was found. The present study was proposed in order to evaluate the extraction of bioactive compounds, particularly phenolic compounds, by solid-state fermentation (SSF) of L. tridentata leaves. The basidiomycet...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-013-0222-2
更新日期:2013-11-01 00:00:00
abstract::Marine Aspergillus awamori BTMFW032, recently reported by us, produce acidophilic tannase as extracellular enzyme. Here, we report the application of this enzyme for synthesis of propyl gallate by direct transesterification of tannic acid and in tea cream solubilisation besides the simultaneous production of gallic ac...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-011-9162-x
更新日期:2011-07-01 00:00:00