Abstract:
:To improve expression efficiency of the leuB gene of an extreme thermophile. Thermus thermophilus, in Escherichia coli, the gene was placed under a potent promoter, tac. However, the expression was hardly improved, despite increased transcription. The expression under tac promoter was significantly improved by introducing a leader open reading frame in front of the gene. Similar improvement under a weak promoter, tet, with a leader open reading frame had been described previously. The present results provide evidence that the major limiting step in the expression of a GC-rich thermophile gene in E. coli is translation, and that the addition of a leader open reading frame is more crucial for high level expression of the gene than the use of a potent promoter.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Ishida M,Oshima Tdoi
10.1111/j.1574-6968.1996.tb07978.xsubject
Has Abstractpub_date
1996-01-01 00:00:00pages
137-42issue
1eissn
0378-1097issn
1574-6968pii
0378109795004602journal_volume
135pub_type
杂志文章abstract::The purpose of this study was to generate highly specific serological reagents for the quantitative identification of Actinomyces naeslundii in clinical samples, in particular dental plaque. Balb/c mice were immunized with pasteurized human A. naeslundii strains representing different genospecies and serotypes. Ten hy...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1997.tb10378.x
更新日期:1997-05-15 00:00:00
abstract::Biological halogenation of aromatic compounds implies the generation of reducing equivalents in the form of e.g. NADH. Thermodynamic calculations show that coupling the halogenation step to a step in which the reducing equivalents are oxidized with a potent oxidant such as O2 or N2O makes the halogenation reaction the...
journal_title:FEMS microbiology letters
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doi:10.1111/j.1574-6968.1998.tb13238.x
更新日期:1998-10-15 00:00:00
abstract::Insertion sequence IS100 was localized on a 9.5-kb plasmid of Yersinia pestis and was shown to be specific for Y. pestis and serotype I strains of Y. pseudotuberculosis. The nucleotide sequence of IS100 isolated from this plasmid was determined. The element, which was flanked by 5-bp direct repeats, contained 1953 bp ...
journal_title:FEMS microbiology letters
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doi:10.1111/j.1574-6968.1994.tb07111.x
更新日期:1994-09-01 00:00:00
abstract::Researchers studying both cellular and viral disease agents in the laboratory have become infected since the early days of microbiology 150 years ago. However, in the early 21st century, new concerns about bioweapons being used to generate terror and also with a series of newly emerging or newly understood disease-cau...
journal_title:FEMS microbiology letters
pub_type: 杂志文章,评审
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更新日期:2015-01-01 00:00:00
abstract::Bacillus subtilis possesses two isogenes encoding glutamate racemases, the poly-gamma-glutamate synthesis-linking Glr enzyme and the YrpC isozyme, and produces abundant amounts of the Glr enzyme. The YrpC isozyme, but not the Glr enzyme, was found to influence the activity of DNA gyrase, as did the MurI-type glutamate...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
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更新日期:2003-06-27 00:00:00
abstract::Bacteria are in constant conflict with competing bacterial and eukaryotic cells. To cope with the various challenges, bacteria developed distinct strategies, such as toxins that inhibit the growth or kill rivals of the same ecological niche. In recent years, two toxin systems have been discovered - the type VI secreti...
journal_title:FEMS microbiology letters
pub_type: 杂志文章,评审
doi:10.1111/1574-6968.12180
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abstract::Piscirickettsia salmonis is the etiological agent of Salmonid Rickettsial Septicemia, a disease affecting salmon aquaculture industry. We analyzed the 16S-23S rDNA spacer region (internal transcribed spacer, ITS) of Chilean P. salmonis isolates LF-89 and EM-90. Two main ITS amplification products were obtained by PCR ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2001.tb10576.x
更新日期:2001-04-01 00:00:00
abstract::A bacterial strain, designated as TSB-6, was isolated from the sediments of a Tantloi (India) hot spring at 65 °C. The strain showed 98% 16S rRNA gene sequence similarity with Anoxybacillus kualawohkensis strain KW12 and was found to grow optimally at 37 °C. However, growing cells, cell suspensions, and cell-free extr...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2012.02555.x
更新日期:2012-06-01 00:00:00
abstract::In our recent screen for soil-induced genes, the expression of andA operon (andAcAdAbAa) for anthranilate catabolism in Burkholderia multivorans ATCC 17616 was found to increase dramatically in a soil sample (Nishiyama et al., Environ Microbiol 12: 2539, 2010). The operon was preceded by andR encoding a putative trans...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2012.02532.x
更新日期:2012-05-01 00:00:00
abstract::The chemical and molecular mechanism of toxicity of nitrite towards food-spoilage bacteria such as Clostridium botulinum or Clostridium sporogenes is not well understood. In order to discover the active species and explore its chemistry, a number of compounds related to nitrite were synthesized. Their bacteriocidal ef...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(92)90133-9
更新日期:1992-11-01 00:00:00
abstract::Saccharomyces cerevisiae genes encoding functions necessary for inhibition by the Pseudomonas syringae pv. syringae cyclic lipodepsipeptide, syringomycin-E, were identified by mutant analyses. Syringomycin-E-resistant mutants were isolated, shown to contain single recessive mutations, and divided into eight gene compl...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1993.tb06595.x
更新日期:1993-12-15 00:00:00
abstract::The effect feeding antibiotics has on the bacterial population of the rabbit caecum was investigated. No changes in total volatile fatty acid production or total bacterial counts were observed compared with nonantibiotic treated controls. However, treatment with chlortetracycline resulted in an increase of propionate ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2007.00746.x
更新日期:2007-07-01 00:00:00
abstract::Autophagy, a eukaryotic cellular activity leading to the degradation of cellular components, serves as a defense mechanism against facultative intracellular bacteria as well as a growth niche for the obligate intracellular bacterium Coxiella burnetii. We here demonstrate that the obligate intracellular bacterial patho...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2009.01494.x
更新日期:2009-03-01 00:00:00
abstract::Organic acids such as monocarboxylic acids, dicarboxylic acids or even more complex molecules such as sugar acids, have displayed great applicability in the industry as these compounds are used as platform chemicals for polymer, food, agricultural and pharmaceutical sectors. Chemical synthesis of these compounds from ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnaa118
更新日期:2020-08-01 00:00:00
abstract::The outer membrane proteins of several prominent bacterial pathogens demonstrate substantial variation in their surface antigenic epitopes. To determine if this was also true for Pseudomonas aeruginosa outer membrane protein OprF, gene sequencing of a serotype 5 isolate was performed to permit comparison with the publ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1993.tb06524.x
更新日期:1993-11-01 00:00:00
abstract::We cloned and characterized the Neisseria meningitidis rfaC gene which encodes an enzyme, alpha-1,5 heptosyltransferase I, involved in the synthesis of the deep-core of the lipooligosaccharide. The N. meningitidis rfaC mutant, obtained by an allelic exchange, produced lipooligosaccharide which migrated faster in sodiu...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1997.tb10392.x
更新日期:1997-06-01 00:00:00
abstract::The mating response of the fission yeast Schizosaccharomyces pombe is mediated by mating pheromones, M-factor and P-factor, produced by h- and h+ cells, respectively. When the M-factor receptor (Map3) was ectopically expressed in h- cells lacking the P-factor receptor (Mam2), they acquired mating competence in respons...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1996.tb08459.x
更新日期:1996-09-15 00:00:00
abstract::A microorganism which reduces Fe(III) during the fermentation of glucose was isolated from freshwater sediment. The Fe(III) was supplied to enrichment cultures as a soluble complex with the bidentate ligand maltol (3-hydroxy-2-methyl-4-pyrone). Advantages that were afforded by the use of Fe(III)(maltol)3 over previous...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1999.tb13653.x
更新日期:1999-07-01 00:00:00
abstract::A Gram-negative, facultatively anaerobic, motile and slightly curved rod-shaped bacterium (BFLP-4(T)) was isolated from the faeces of wild seahorses (Hippocampus guttulatus) captured in northwest Spain (Toralla, Galicia). Strain BFLP-4(T) grew at 10-35 degrees C and pH 5-9 (optimally at 20 degrees C and pH 7.2) and at...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
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更新日期:2010-06-01 00:00:00
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journal_title:FEMS microbiology letters
pub_type: 杂志文章
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更新日期:2014-01-01 00:00:00
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journal_title:FEMS microbiology letters
pub_type: 杂志文章,评审
doi:10.1093/femsle/fnu022
更新日期:2015-01-01 00:00:00
abstract::Two monoclonal antibodies (G6 and 7B), generated against a 63-kDa stress protein (GSP63) from Neisseria gonorrhoeae strain VP1, were used to investigate the antigenic heterogeneity of GSP63 among the Neisseriaceae and its antigenic relationship with the Hsp60 heat-shock protein family. Immunoblotting experiments demon...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(92)90282-s
更新日期:1992-11-15 00:00:00
abstract::Serratia entomophila and Serratia proteamaculans cause amber disease of the grass grub Costelytra zealandica (Coleoptera: Scarabaeidae). Three genes required for virulence, sepABC, are located on a large plasmid, pADAP. The translated products of the sep genes are members of the toxin complex (Tc) family of insecticid...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2007.00886.x
更新日期:2007-10-01 00:00:00
abstract::Stenotrophomonas maltophilia is a multidrug-resistant opportunistic pathogen. S. maltophilia quorum-sensing system is mediated by the diffusible signal factor (DSF), which synthesis depends on rpfF. It has been reported that rpfF disruption in S. maltophilia K279a leads to a loss of DSF synthesis, reduced levels of ex...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnz069
更新日期:2019-03-01 00:00:00
abstract::Peroxidase-conjugated transferrin was used to detect transferrin receptors both in intact outer membrane vesicles (OMVs) from Neisseria species in a dot blot assay, and in SDS-PAGE-separated OMV proteins after transferring to nitrocellulose membranes. All N. meningitidis strains produced transferrin receptors after cu...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1991.tb04472.x
更新日期:1991-10-15 00:00:00
abstract::Using primers corresponding to conserved regions of the bacterial regulatory gene fur, a homologue of this gene from the genome of Rhizobium leguminosarum biovar viciae, the nitrogen-fixing symbiont of peas, was isolated and sequenced. The fur gene is normally expressed constitutively, independent of the presence of F...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/s0378-1097(98)00454-6
更新日期:1998-11-15 00:00:00
abstract::We have determined the genetic basis of minocycline resistance in a strain of Streptococcus infantis isolated from a healthy human oral cavity. We demonstrate that tet(S), identical to tet(S) found on the enterococcal conjugative transposon Tn6000, is responsible for the observed resistance. The gene is located on a s...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/1574-6968.12410
更新日期:2014-04-01 00:00:00
abstract::The mosquitocidal crystal protein, Cry19Aa, from Bacillus thuringiensis ssp. jegathesan, has high toxicity to Anopheles stephensi and Culex pipiens but is less toxic to Aedes aegypti. To study the functional role of putative domain II and surface residues in mosquito toxicity, 16 alanine substitution mutations were in...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2009.01583.x
更新日期:2009-06-01 00:00:00
abstract::Endophytic fungi from Paeonia lactiflora Pallas, which is mainly distributed in China, were characterized and screened to identify those capable of producing paeoniflorin. A total of 101 isolates obtained from the roots, stems and leaves of P. lactiflora were grouped into 16 fungal taxa based on morphological traits a...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fny263
更新日期:2018-12-01 00:00:00
abstract::A multiplex-polymerase chain reaction (PCR) assay based on one-step amplification and detection of two different mycobacterial genomic fragments was designed for differentiation of Mycobacterium bovis and Mycobacterium tuberculosis. The oligonucleotide primers were chosen from a 500-bp genomic fragment which is well c...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2002.tb11322.x
更新日期:2002-08-27 00:00:00