Abstract:
:High voltage electroporation has been investigated as a method for rapid recovery of plasmid and chromosomal DNA from the cyanobacteria Nostoc PCC 7121, Synechococcus PCC 7002, and Anabaena PCC 7120. Pulses of 18 kV/cm and higher applied to concentrated Nostoc cells carrying a shuttle plasmid (pRL25) resulted in copious release of nucleic acids and phycobiliproteins into the suspending medium. Small portions of these supernatants, when electroporated with Escherichia coli, gave rise to hundreds of E. coli transformants which contained pRL25. Electroporation of Synechococcus carrying plasmid pAQE19 did not cause detectable release of macromolecules but did reveal a low-level, voltage independent 'leakage' of pAQE19 into the medium. Electroextraction of Nostoc or Anabaena followed by addition of E. coli and delivery of a second high-voltage pulse permitted direct, one-cuvette transfer of shuttle plasmids from these cyanobacteria into E. coli. Electroextraction of single cyanobacterial colonies, as shown for Nostoc, also released sufficient chromosomal DNA for amplification of specific sequences by the polymerase chain reaction.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Moser D,Zarka D,Hedman C,Kallas Tdoi
10.1111/j.1574-6968.1995.tb07541.xsubject
Has Abstractpub_date
1995-05-15 00:00:00pages
307-13issue
3eissn
0378-1097issn
1574-6968pii
037810979500123Mjournal_volume
128pub_type
杂志文章abstract::Serine hydroxymethyltransferase (SHMT) is a key enzyme in cellular one-carbon pathway and has been studied in many living organisms from bacteria to higher plants and mammals. However, biochemical and molecular characterization of SHMT from photoautotrophic microorganisms remains a challenge. Here, we isolated the SHM...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2012.02597.x
更新日期:2012-08-01 00:00:00
abstract::Chondroitin 6-sulfate depolymerizing activity was examined in the culture supernatant of Streptococcus intermedius ATCC 27335. 2-Acetamido-2-deoxy-3-O-(beta-D-gluco-4-enepyranosyluronic acid)-6-O-sulfo-D-galactose was split from the substrate. The enzyme(s) was not active upon chondroitin 4-sulfate or dermatan sulfate...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1989.tb03284.x
更新日期:1989-01-15 00:00:00
abstract::The effects of oxidoreduction potential (Eh) combined with acetic acid, NaCl and temperature on the growth, acidification, and membrane properties of Lactobacillus plantarum were studied. The culture medium was set at pH 5, and two different Eh values were adjusted using nitrogen (Eh = +350 mV) or hydrogen (Eh = -300 ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2002.tb11356.x
更新日期:2002-09-10 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::A Deltalgt (Lgt, lipoprotein diacylglyceryl transferase) isogenic mutant was obtained which indicates that lgt is not essential for cell growth in vitro, like in the Gram-positive bacterium Bacillus subtilis, but unlike in the proteobacteria Escherichia coli and Salmonella typhimurium. The mutation was transduced to a...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2001.tb10720.x
更新日期:2001-06-25 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
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journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnz223
更新日期:2019-09-01 00:00:00
abstract::Mycobacterium sp. PYR-1 was previously isolated in our laboratory and was shown to be able to mineralize high molecular mass polycyclic aromatic hydrocarbons (PAHs) [Heitkamp and Cerniglia, (1988) Appl. Environ. Microbiol. 54, 1612-1614]. In this research, the 16S rRNA gene (rDNA) of this strain was amplified by polym...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(95)00186-9
更新日期:1995-07-15 00:00:00
abstract::Helicobacter pylori genomes contain about 30 hop genes that encode outer membrane proteins. Helicobacter pylori hopQ alleles exhibit a high level of genetic diversity, and two families of hopQ alleles have been described. Type I hopQ alleles are found more commonly in cag-positive H. pylori strains from patients with ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2008.01368.x
更新日期:2008-12-01 00:00:00
abstract::Three different whole cell biosensor constructs were made by fusing the mercury inducible promoter, P(mer), and its regulatory gene, merR, from transposon Tn21 with reporter genes luxCDABE, lacZYA, or gfp. In Escherichia coli these biosensor constructs responded to low levels of mercury by producing light, beta-galact...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2000.tb09413.x
更新日期:2000-12-01 00:00:00
abstract::Five mutations in ccpA of Bacillus megaterium with impaired functions were analysed for carbon catabolite repression. The phenotypes support the hypothesis that CcpA assumes a PurR/LacI fold. The completely inactive mutants CcpA119GE and CcpA326am cause alterations which are incompatible with that fold. A mutation wit...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1997.tb10485.x
更新日期:1997-08-01 00:00:00
abstract::Trichothecenes are an important family of mycotoxins produced by several species of the genus Fusarium. These fungi cause serious disease on infected plants and postharvest storage of crops, and the toxins can cause health problems for humans and animals. Unfortunately, there are few methods for controlling mycotoxin ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/1574-6968.12236
更新日期:2013-11-01 00:00:00
abstract::Bacillus subtilis cells must have cytochromes for growth and can synthesize cytochromes of a-, b-, c-, d-, and o-types. After a long lag, our knowledge of the structure, genetics and specific role for these cytochromes is now growing exponentially as the result of recent research. This progress is reviewed here and in...
journal_title:FEMS microbiology letters
pub_type: 杂志文章,评审
doi:10.1111/j.1574-6968.1992.tb14025.x
更新日期:1992-12-15 00:00:00
abstract::The synthesis of inducible biodegradative threonine dehydratase of Escherichia coli increased several-fold in the presence of the DNA gyrase inhibitors, nalidixic acid and coumermycin. Temperature-sensitive gyrB mutants expressed higher levels of dehydratase as compared to an isogenic gyrB+ strain. Immunoblotting expe...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(89)90362-5
更新日期:1989-11-01 00:00:00
abstract::pH is a key environmental factor affecting the physiology, ecology and pathogenicity of the oral biofilms colonizing the hard tissues of the human mouth. Much attention has been focused on the production of organic acids through the metabolism of carbohydrates by pathogenic oral bacteria. Now, evidence is emerging tha...
journal_title:FEMS microbiology letters
pub_type: 杂志文章,评审
doi:10.1111/j.1574-6968.2000.tb09393.x
更新日期:2000-12-01 00:00:00
abstract::The polymerase chain reaction was used to search for hepatitis B virus (HBV)-DNA sequences in the sera of HBsAg-negative Senegalese patients suffering from liver cirrhosis or liver cancer. Amplified HBV-DNA sequences were detected by hybridization with a digoxigenin-labelled HBV-DNA probe. HBV-DNA was detected in 17% ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(91)90439-h
更新日期:1991-09-15 00:00:00
abstract::Pythium drechsleri Paul was described as a new species from soil samples taken in a salt-marsh of Arzew, Algeria [Paul, B. (1988) Une nouvelle espèce de Pythium isolée d'une saline de l'ouest Algérien. Cryptogam. Mycol. 9, 325-333]. The name of the fungus, P. drechsleri, is a nomen invalidum, as it is a later homonym ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2000.tb08941.x
更新日期:2000-02-01 00:00:00
abstract::Bacillus cereus is becoming one of the more important causes of food poisoning in the industrialised world. It produces one emetic toxin and three different enterotoxins. The emetic toxin is a ring-shaped structure of three repeats of four amino and/or oxy acids: [D-O-Leu-D-Ala-L-O-Val-L-Val]3. This ring structure has...
journal_title:FEMS microbiology letters
pub_type: 杂志文章,评审
doi:10.1111/j.1574-6968.1997.tb12776.x
更新日期:1997-12-15 00:00:00
abstract::In this report we describe and characterize two oligomer probes that are broadly homologous to conserved eubacterial 16S ribosomal RNA (rRNA) sequences not present in human 18 rRNA or human mitochondrial 12S rRNA. One or both of the probes can detect all of 23 phylogenetically diverse eubacterial nucleic acids against...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(89)90139-0
更新日期:1989-01-01 00:00:00
abstract::DNA microarray technology was used to survey changes in gene expression in Pseudomonas fluorescens after mitomycin C treatment. As expected, genes associated with the SOS response were upregulated, such as those encoding the recombination protein RecA, DNA repair protein RecN, excinuclease ABC subunit A UvrA, and the ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2007.00630.x
更新日期:2007-04-01 00:00:00
abstract::Klebsiella pneumoniae 287-w carries three small narrow host range (NHR) plasmids (pIGMS31, pIGMS32, and pIGRK), which could be maintained in several closely related species of Gammaproteobacteria, but not in Alphaproteobacteria. The plasmids contain different mobilization systems (MOB), whose activity in Escherichia c...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2011.02432.x
更新日期:2012-01-01 00:00:00
abstract::The aim of this study was to understand the pathogenesis of motile aeromonas septicemia caused by an emergent, high virulent Aeromonas hydrophila (vAh) in channel catfish, Ictalurus punctatus Adipose fin clipped catfish were challenged with vAh using a waterborne challenge method, and the distribution of vAh over a ti...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnw080
更新日期:2016-05-01 00:00:00
abstract::Integrons are bacterial genetic elements capable of capturing and expressing potentially adaptive genetic material. Class 1 integrons constitute the most intensely studied group of these elements to date, mainly due to their well-established role in the acquisition and dissemination of antibiotic resistance genes in c...
journal_title:FEMS microbiology letters
pub_type: 信件
doi:10.1111/j.1574-6968.2007.00992.x
更新日期:2008-01-01 00:00:00
abstract::Coxiella is a genus of obligate intracellular bacteria engaged in a variety of interactions with eukaryotes. The type species, Coxiella burnetii, infects several vertebrate species, including humans, and is the causative agent of Q fever. Multiple copies of a specific transposable element, the insertion sequence IS111...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnv132
更新日期:2015-09-01 00:00:00
abstract::The glnAntrBC operon of Proteus vulgaris was cloned and heterologously expressed in Escherichia coli. The nucleotide sequence was determined. An open reading frame of 1407 bp was identified as the glnA gene and the deduced amino acid sequence showed 82% identity with the E. coli glutamine synthetase protein. Heterolog...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1993.tb05952.x
更新日期:1993-01-15 00:00:00
abstract::The polyhydroxyalkanoic acid (PHA) synthase gene (phaCAc) of a species of Acinetobacter isolated from an activated sludge treatment plant was cloned by heterologous complementation in a poly-beta-hydroxybutyrate (PHB) negative mutant of Alcaligenes eutrophus. Nucleotide sequence analysis of phaCAc revealed an open rea...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1994.tb06817.x
更新日期:1994-05-01 00:00:00
abstract::A genomic bank was constructed in Escherichia coli HB101, consisting of DNA fragments from Bacteroides thetaiotaomicron strain 489 inserted within the vector pBR322. By screening on complex medium containing blue dextran, 10 stable dextranase-positive (Dex+) clones were isolated. Seven groups of Dex+ inserts were iden...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(91)90368-k
更新日期:1991-12-01 00:00:00
abstract::The classical monomeric autotransporters are ubiquitously used by Gram-negative bacteria to export virulence and colonization factors to their cell surface or into their surroundings. They are expressed as monomeric proteins that pass the inner and outer membrane in two consecutive steps facilitated by the Sec translo...
journal_title:FEMS microbiology letters
pub_type: 杂志文章,评审
doi:10.1093/femsle/fny165
更新日期:2018-09-01 00:00:00
abstract::Competition assays measure differences between populations of bacteria after stress adaptation, populations of different bacteria and mutations in antibiotic resistance genes. We have developed a competition-based assay to evaluate if genes upregulated under starvation are important for bacterial survival. Stress resp...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnz054
更新日期:2019-03-01 00:00:00
abstract::The production of candidate affinity proteins in a soluble form, for downstream characterization, is often a time-consuming step in combinatorial protein engineering methods. Here, a novel approach for efficient production of candidate clones is described based on direct cleavage of the affinity protein from the surfa...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2007.00990.x
更新日期:2008-01-01 00:00:00