Abstract:
:Regulation of the cysteine protease activity is imperative for proper functioning of the various organ systems. Elevated activities of cysteine proteinases due to impaired regulation by the endogenous cysteine proteinase inhibitors (cystatins) have been linked to liver malignancies. To gain an insight into these regulatory processes, it is essential to purify and characterise the inhibitors, cystatins. Present study was undertaken to purify the inhibitor from the liver. The purification was accomplished in four steps: alkaline treatment, ammonium sulphate fractionation, acetone precipitation and gel filtration column (Sephacryl S-100 HR). The eluted protein exhibited inhibitory activity towards papain, and its purity was further reaffirmed using western blotting and immunodiffusion. The purified inhibitor (liver cystatin (LC)) was stable in the pH range of 6-8 and temperature up to 45 °C. In view of the significance of kinetics parameters for drug delivery, the kinetic parameters of liver cystatin were also determined. LC showed the greatest affinity for papain followed by ficin and bromelain. UV and fluorescence spectroscopy results showed that binding of LC with thiol proteases induced changes in the environment of aromatic residues. Recent advances in the field of proteinase inhibitors have drawn attention to the possible use of this collected knowledge to control pathologies.
journal_name
Appl Biochem Biotechnoljournal_title
Applied biochemistry and biotechnologyauthors
Shah A,Priyadarshini M,Khan MS,Aatif M,Amin F,Bano Bdoi
10.1007/s12010-013-0383-zsubject
Has Abstractpub_date
2013-10-01 00:00:00pages
667-75issue
3eissn
0273-2289issn
1559-0291journal_volume
171pub_type
杂志文章abstract::To achieve targeted distribution of anticancer drugs with sustained activity, ferromagnetic ethylcellulose microcapsules containing an anticancer drug, mitomycin C (FM-MMC-mc), were prepared by a method based on phase separation principles. Two prototypes of FM-MMC-mc were made: one with the drug as the core and zinc ...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/BF02783752
更新日期:1984-01-01 00:00:00
abstract::The increase in waste disposal and energy costs has provided an incentive to convert carbohydrate-rich food waste streams into fuel. For example, dining halls and restaurants discard foods that require tipping fees for removal. An effective use of food waste may be the enzymatic hydrolysis of the waste to simple sugar...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-007-8045-7
更新日期:2008-03-01 00:00:00
abstract::Silver nanoparticles (AgNPs) were synthesised using Kalopanax septemlobus plant leaf extracts. UV-visible spectrophotometric, Fourier-transform infrared, electron dispersive X-ray spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses confirmed synthesis of AgNPs. TEM micr...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-1077-x
更新日期:2014-09-01 00:00:00
abstract::When dilute-acid hydrolysates from spruce are fermented to produce ethanol, detoxification is required to make the hydrolysates fermentable at reasonable rates. Treatment with alkali, usually by overliming, is one of the most efficient approaches. Several nutrients, such as ammonium and phosphate, are added to the hyd...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:124:1-3:0911
更新日期:2005-04-01 00:00:00
abstract::Hydrogels are attractive biomaterials for three-dimensional cell culture and tissue engineering applications. The preparation of hydrogels using alginate and gelatin provides cross-linked hydrophilic polymers that can swell but do not dissolve in water. In this work, we first reinforced pure alginate by using polyoxye...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-0851-0
更新日期:2014-05-01 00:00:00
abstract::Production costs of cellulosic biofuels can be lowered if cellulases are recovered and reused using particulate carriers that can be extracted after biomass hydrolysis. Such enzyme recovery was recently demonstrated using enzymogel nanoparticles with grafted polymer brushes loaded with cellulases. In this work, cellul...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-015-1633-z
更新日期:2015-06-01 00:00:00
abstract::The potential carrier role of β-lactoglobulin (β-LG) and its interactions with oxaliplatin were studied using various spectroscopic techniques (fluorescence, UV-visible, and circular dichroism (CD)) in an aqueous medium at two temperatures of 25 and 37 °C in combination with a molecular docking study. Fluorescence mea...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-1341-0
更新日期:2015-01-01 00:00:00
abstract::Urease has been immobilized and layered onto the walls of manufactured silicon microchannels. Enzyme immobilization was performed using layer-by-layer nano self-assembly. Alternating layers of oppositely charged polyelectrolytes, with enzyme layers "encased" between them, were deposited onto the walls of the silicon m...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:121:1-3:0085
更新日期:2005-04-01 00:00:00
abstract::It has been found that lactic acid and hydrogen peroxide (H2O2) displayed co-operatively enhanced killing activity to pathogens. The synergistic effect was investigated with using several microbe species, suggesting that low concentration of lactic acid and H2O2 could kill both Gram-negative and Gram-positive bacteria...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-019-03031-z
更新日期:2019-11-01 00:00:00
abstract::A mesophilic bacterial culture producing a novel thermostable alkaline lipase was isolated from oil rich soil sample and identified as Bacillus subtilis EH 37. The lipase was partially purified by ammonium sulfate precipitation and hydrophobic interaction chromatography with 17.8-fold purification and 41.9 U/ml specif...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-009-8751-4
更新日期:2010-04-01 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 short supply of edible vegetable oils is the limiting factor in the progression of biodiesel technology; thus, in this study, we applied response surface methodology in order to optimize the reaction factors for biodiesel synthesis from inedible castor oil. Specifically, we evaluated the effects of multiple parame...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-008-8468-9
更新日期:2009-05-01 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
abstract::This study shows that electroanalysis may be used in vanillin biotechnological production. As a matter of fact, vanillin and some molecules implicated in the process like eugenol, ferulic acid, and vanillic acid may be oxidized on electrodes made of different materials (gold, platinum, glassy carbon). By a judicious c...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-013-0631-2
更新日期:2014-02-01 00:00:00
abstract::Endoinulinase production was achieved by heteroexpression of endoinulinase-encoding gene from Aspergillus ficuum which is an eukaryotic organism in Escherichia coli BL21 (DE3). Further analysis demonstrated that the native signal peptide existed in inu2 gene lowered the enzyme expression level. To realize extracellula...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-016-2037-4
更新日期:2016-07-01 00:00:00
abstract::Cancer normally tends to result in the decrease of tissue elasticity; i.e., the cancerous region is more rigid than the normal surrounding areas. This would appear as differences in the distribution of internal birefringence that could be used to improve image contrast between the cancerous and normal tissue structure...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-007-8121-z
更新日期:2009-11-01 00:00:00
abstract::Vanillin is one of the most widely used flavoring agents in the world. As the annual world market demand of vanillin could not be met by natural extraction, chemical synthesis, or tissue culture technology, thus biotechnological approaches may be replacement routes to make production of bio-vanillin economically viabl...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章,评审
doi:10.1007/s12010-012-0066-1
更新日期:2013-02-01 00:00:00
abstract::Laccase is one of the lignolytic enzymes found in liquid cultures of the fungus Coriolus zonatus in defined medium. The enzyme was isolated from culture liquid and characterized. Laccase from C. zonatus is a single-chain protein with a molecular mass of 60 kDa. Carbohydrate moiety of enzyme consisted of mannose, galac...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:76:2:115
更新日期:1999-02-01 00:00:00
abstract::The cellulolytic fungus, Trichoderma has oval and mononucleate conidia. When these conidia are incubated in a liquid medium, they begin to swell and their shape becomes spherical followed by an increase in inner space. In such swollen conidia, it is possible to produce a larger autopolyploid nucleus using a mitotic ar...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:
更新日期:2004-04-01 00:00:00
abstract::The enzyme cellobiase from Novo was immobilized in controlled pore silica particles by covalent binding with the silane-glutaraldehyde method with protein and activity yields of 67 and 13.7%, respectively. The activity of the free enzyme (FE) and immobilized enzyme (IE) was determined with 2 g/L of cellobiose, from 40...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:91-93:1-9:615
更新日期:2001-04-01 00:00:00
abstract::This work investigated the cultivation of Chlorella vulgaris in a thin-film flat plate photobioreactor under outdoor conditions and using digested piggery wastewater as the culture medium. The algal cells were able to adapt quickly to the wastewater and outdoor conditions. A specific growth rate of 0.12 day-1 was obta...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-018-2889-x
更新日期:2019-04-01 00:00:00
abstract::Efficient degradation of cellulose needs a synergistic reaction of the cellulolytic enzymes, which include exoglucanases, endoglucanases, and β-1,4-glucosidase. In this study, we used an improved Bac-to-Bac/BmNPV baculovirus expression system, which lacks the virus-encoded chitinase cathepsin (v-cath) genes of Bombyx ...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-011-9291-2
更新日期:2011-09-01 00:00:00
abstract::Glycopeptides produced by Streptomyces species are the drugs used against beta-lactam drug-resistant staphylococcal infections, and vancomycin is important among them. Increased prevalence of resistant strains increased the usage of vancomycin worldwide and also promoted attempts for indigenous production. The optimum...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:102-103:1-6:395
更新日期:2002-07-01 00:00:00
abstract::The amount of corn stover and wheat straw that can be sustainably collected in North Carolina was estimated to be 0.64 and 0.16 million dry t/yr, respectively. More than 80% of these crop residues are located in the coastal area. The bioethanol potential from corn stover and wheat straw was estimated to be about 238 m...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:129:1:41
更新日期:2006-04-01 00:00:00
abstract::Vacuolar processing enzymes (VPEs) have received considerable attention recently, as they exhibit caspase-1-like cleavage activity and regulate the process of PCD. However, knowledge about their detailed characteristics and structures is relatively limited. In this study, a gamma vacuolar processing enzyme gene, MhVPE...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-014-0867-5
更新日期:2014-05-01 00:00:00
abstract::We used ultrafiltration (UF) to evaluate membrane filtration characteristics of thin stillage and determine solids and nutrient compositions of filtered streams. To obtain thin stillage, corn was fermented using laboratory methods. UF experiments were conducted in batch mode under constant temperature and flow rate co...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-010-9114-x
更新日期:2011-05-01 00:00:00
abstract::L-Ribose is an important precursor for antiviral agents, and thus its high-level production is urgently demanded. For this aim, immobilized recombinant Escherichia coli cells expressing the L-arabinose isomerase and variant mannose-6-phosphate isomerase genes from Geobacillus thermodenitrificans were developed. The im...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/s12010-013-0547-x
更新日期:2014-01-01 00:00:00
abstract::Foam fractionation is one of the low operating-cost techniques for removing proteins from a dilute solution. The initial bulk solution pH and air superficial velocity play an important role in the foam-fractionation process. Denaturation of proteins (enzymes) can occur, however, during the foam-fractionation process f...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1385/abab:79:1-3:701
更新日期:1999-04-01 00:00:00
abstract::The abilities of lignin peroxidase (LIP) and manganese peroxidase (MNP) from Phanerochaete chrysosporium to degrade an insoluble hardwood lignin in vitro in aqueous media were tested. Neither LIP nor MNP appreciably changed the mass or lignin content, although both produced small amounts of unique solubilized lignin f...
journal_title:Applied biochemistry and biotechnology
pub_type: 杂志文章
doi:10.1007/BF02920207
更新日期:1998-04-01 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