Abstract:
:The substrate specificity of alpha-chymotrypsin and other serine proteases, trypsin, elastase, proteinase K and subtilisin, towards hydrolysis of various polyesters was examined using poly(L-lactide) (PLA), poly(beta-hydroxybutyrate) (PHB), poly(ethylene succinate) (PES), poly(ethylene adipate) (PEA), poly(butylene succinate) (PBS), poly(butylene succinate-co-adipate) (PBS/A), poly[oligo(tetramethylene succinate)-co-(tetramethylane carbonate)] (PBS/C), and poly(epsilon-caprolactone) (PCL). alpha-Chymotrypsin could degrade PLA and PEA with a lower activity on PBS/A. Proteinase K and subtilisin degraded almost all substrates other than PHB. Trypsin and elastase had similar substrate specificities to alpha-chymotrypsin.
journal_name
Biotechnol Lettjournal_title
Biotechnology lettersauthors
Lim HA,Raku T,Tokiwa Ydoi
10.1007/s10529-005-2217-8keywords:
subject
Has Abstractpub_date
2005-04-01 00:00:00pages
459-64issue
7eissn
0141-5492issn
1573-6776journal_volume
27pub_type
杂志文章abstract:OBJECTIVE:The effects of a brief (3 days) and prolonged (6 days) period of incubation in darkness and light on the biomass content, lipid content and fatty acid profile in Chlorella vulgaris UMT-M1 were determined. RESULTS:Three days of incubation in darkness increased saturated fatty acid (SFA) content from 34.0 to 4...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-021-03077-2
更新日期:2021-01-12 00:00:00
abstract:OBJECTIVES:To investigate the effect of full-length fragment of DNA topoisomerase I gene (TOP1) matrix attachment regions (MARs) originating from the human genome on transgene expression in Chinese hamster ovary (CHO) cells and explore the underlying mechanisms. RESULTS:Results showed that TOP1 MAR cannot only enhance...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-019-02673-7
更新日期:2019-07-01 00:00:00
abstract:OBJECTIVES:To investigate the effect of the linker region (LR) on the enzymatic activity, stability, and flexibility of Bacillus subtilis cellulase CelI15, six mutants were constructed that contained increasing numbers of the LR. RESULTS:The CelI15 mutant with three copies of the LR (approx. 57 amino acids) showed the...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-016-2136-x
更新日期:2016-09-01 00:00:00
abstract::The genetic relationship among commercial cultivars of Citrus limon (lemon) was analysed by inter-simple sequence repeats (ISSR) and flow cytometry techniques. Two cultivars with a close germplasm were distinguished by screening 10 SSR primers and by measuring DNA content of prestained nuclei. ...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1023/B:BILE.0000044920.36497.fc
更新日期:2004-08-01 00:00:00
abstract::The Bacillus pumilus SG2 chitinase gene (ChiS) and its truncated form lacking chitin binding (ChBD) and fibronectin type III (FnIII) domains were transformed to Arabidopsis plants and the expression, functionality and antifungal activity of the recombinant proteins were investigated. Results showed that while the two ...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-009-0192-1
更新日期:2010-04-01 00:00:00
abstract::Keratinase from Pseudomonas aeruginosa KS-1 was expressed constitutively as an extracellular protein in Escherichia coli with high specific activity of 3.7 kU/mg. It was purified fourfold as a 33 kDa monomeric protein by Q-Sepharose ion exchange chromatography with a recovery of 95%. It is a serine protease with optim...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-010-0361-2
更新日期:2010-12-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-009-0103-5
更新日期:2009-12-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-017-2442-y
更新日期:2018-01-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-007-9332-7
更新日期:2007-06-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-020-02911-3
更新日期:2020-09-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-018-2583-7
更新日期:2018-10-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-015-1801-9
更新日期:2015-07-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-010-0467-6
更新日期:2011-03-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-012-0883-x
更新日期:2012-06-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-012-0907-6
更新日期:2012-07-01 00:00:00
abstract::The production of a low-temperature alkalophilic lipase from Acinetobacter johnsonii was improved using genome shuffling. The starting populations, obtained by UV irradiation and diethyl sulfate mutagenesis, were subjected to recursive protoplast fusion. The optimal conditions for protoplast formation and regeneration...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-011-0749-7
更新日期:2012-01-01 00:00:00
abstract::Human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) is a heterodimer containing 66 kDa p66 and 51 kDa p51 subunits. We previously showed that HIV-1 group M (HIV-1 M) RT and HIV-1 group O (HIV-1 O) RT have higher affinities for dTTP and template-primer (T/P) than Moloney murine leukemia virus RT, whi...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-013-1321-4
更新日期:2013-12-01 00:00:00
abstract::Quercetin was methylated with two O-methyltransferases (OMTs) expressed in E. coli. A construct (RSOMT) was designed to express two OMTs: ROMT-9, which methylates specifically at the 3'-hydroxyl group of quercetin and SOMT-2, which methylates at the 4'-hydroxyl group. Both OMT genes were driven by T7 promoters and had...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-005-3893-0
更新日期:2005-12-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-013-1335-y
更新日期:2014-01-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-013-1327-y
更新日期:2014-01-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-007-9486-3
更新日期:2007-12-01 00:00:00
abstract::The industrial-scale production of phenylalanine ammonia-lyase (PAL) mainly uses strains of Rhodotorula. However, the PAL gene from Rhodotorula has not been cloned. Here, the full-length gene of PAL from Rhodotorula glutinis was isolated. It was 2,121 bp, encoding a polypeptide with 706 amino acids and a calculated MW...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-013-1140-7
更新日期:2013-05-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-017-2413-3
更新日期:2017-11-01 00:00:00
abstract::A new cDNA (Os beta fruct2) encoding an acid beta-D-fructofuranosidase from rice has been cloned, sequenced and expressed in Pichia pastoris. The full-length cDNA is 2453 base pairs long and encodes a pre-pro-protein of 682 amino acids. The cDNA fragment coding for mature enzyme was sub-cloned into vector pPICZalphaA ...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1023/a:1022648211997
更新日期:2003-03-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-013-1205-7
更新日期:2013-08-01 00:00:00
abstract:OBJECTIVES:To determine the effectiveness of evoglow-Pp1 as a reporter to study gene expression in bifidobacteria. To choose a strong and constitutive promoter to track fluorescently labelled bifidobacteria in environments under anaerobic conditions. RESULTS:The elongation factor P (EF-P) promoter from Bifidobacterium...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-015-1802-8
更新日期:2015-07-01 00:00:00
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journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1023/a:1022345508979
更新日期:2003-02-01 00:00:00
abstract::A brown-rot fungus, Fomitopsis pinicola, degraded polyvinyl alcohol (PVA) in quartz sand but not in liquid culture. From gel permeation chromatography analysis, the high-molecular-weight fraction of PVA was decreased by the action of F. pinicola but the coloration of the culture filtrate with I2 solution increased. Th...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-013-1281-8
更新日期:2013-11-01 00:00:00
abstract::Leymus chinensis is an important grassland perennial grass. However, its drought tolerance requires to be improved. LEA (late embryogenesis abundant) genes are believed to confer resistance to drought and water deficiency. Using Agrobacterium-mediated transformation, a wheat LEA gene, TaLEA(3), was integrated into L. ...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-008-9864-5
更新日期:2009-02-01 00:00:00
abstract::A coupled in silico thermodynamic and probabilistic metabolic control analysis methodology was verified by applying it to the glycerol biosynthetic pathway in Saccharomyces cerevisiae. The methodology allows predictions even when detailed knowledge of the enzyme kinetics is lacking. In a metabolic steady state, we fou...
journal_title:Biotechnology letters
pub_type: 杂志文章
doi:10.1007/s10529-014-1675-2
更新日期:2015-02-01 00:00:00