Abstract:
:The expression of nifA-, niH- and nifB-lacZ fusions was examined in different mutants of Azospirillum brasilense. Mutations in nifA, glnA and glnB severely impaired the expression of nifH- and nifB-lacZ fusions. By contrast, a nifA-lacZ fusion was not affected in a nifA or a glnB background and was only partially impaired in glnA mutants. It is proposed that in A. brasilense, the PII protein and glutamine synthetase are involved in a post-translational modification of NifA.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Liang YY,de Zamaroczy M,Arsène F,Paquelin A,Elmerich Cdoi
10.1111/j.1574-6968.1992.tb14028.xkeywords:
subject
Has Abstractpub_date
1992-12-15 00:00:00pages
113-9issue
1-3eissn
0378-1097issn
1574-6968journal_volume
100pub_type
杂志文章abstract::The Fe(III) reductase activity was studied in the South African Fe(III)-reducing bacterium, Thermus scotoductus (SA-01). Fractionation studies revealed that the membrane as well as the soluble fraction contained NAD(P)H-dependent Fe(III) reductase activity. The membrane-associated enzyme was solubilized by KCl treatme...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2006.00499.x
更新日期:2006-12-01 00:00:00
abstract::Mycobacteria belonging to the Mycobacterium tuberculosis complex have the ability to invade and replicate in non-phagocytic cells, an event that requires the presence of bacterial surface components capable of triggering a cell response and the subsequent internalization of the microorganism. In this study, we report ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1999.tb13738.x
更新日期:1999-08-15 00:00:00
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journal_title:FEMS microbiology letters
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更新日期:2000-09-01 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:2003-01-28 00:00:00
abstract::Cell differentiation is one of the marks of multicellular organisms. Terminally specialised nitrogen-fixing cells, termed heterocysts, evolved in filamentous cyanobacteria more than 2 Gya. The development of their spacing pattern has been thoroughly investigated in model organisms such as Anabaena sp. PCC 7120. This p...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnx154
更新日期:2017-08-15 00:00:00
abstract::The majority of microorganisms in natural environments are difficult to cultivate, but their genes can be studied via metagenome libraries. To enhance the chances that these genes become expressed we here report the construction of a broad-host-range plasmid vector (pRS44) for fosmid and bacterial artificial chromosom...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
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更新日期:2009-06-01 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:2011-01-01 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
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更新日期:1997-08-01 00:00:00
abstract::There are arguments against the conclusion drawn by Haselwandter and Ebner that fungal spores have survived for some 5300 years on hay padding in the leather boots of a frozen body discovered in the Austrian Alps. According to cryobiological experience, long-term survival of fungal spores is very unlikely at temperatu...
journal_title:FEMS microbiology letters
pub_type: 评论,杂志文章
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更新日期:1994-07-01 00:00:00
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journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1992.tb14029.x
更新日期:1992-12-15 00:00:00
abstract::While there is strong evidence showing that many food-borne probiotics regulate cholesterol metabolism, few studies have examined how probiotics of human origin affect cholesterol metabolism. Because people living in so-called 'longevity villages' are unlikely to have hypercholesterolemia, we hypothesized that probiot...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnz254
更新日期:2019-12-01 00:00:00
abstract::The physiological role of mitochondrial aldehyde dehydrogenase (ALD5) was investigated by analysis of the ald5 mutant (AKD321) in Saccharomyces cerevisiae. K(+)-activated ALDH activity of the ald5 mutant was about 80% of the wild-type in the mitochondrial fraction, while the respiratory activity of the ald5 mutant was...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1999.tb08856.x
更新日期:1999-12-15 00:00:00
abstract::The gene encoding the second enzyme of the 2C-methyl-D-erythritol 4-phosphate (MEP) pathway for isopentenyl diphosphate biosynthesis, 1-deoxy-D-xylulose 5-phosphate (DXP) reductoisomerase, was cloned and sequenced from Zymomonas mobilis. The deduced amino acid sequence showed the highest identity (48.2%) to the DXP re...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2000.tb09329.x
更新日期:2000-10-01 00:00:00
abstract::When challenged by stresses such as starvation, the soil bacterium Bacillus subtilis produces an endospore surrounded by a proteinaceous coat composed of >70 proteins that are organized into three main layers: an amorphous undercoat, lightly staining lamellar inner coat and electron-dense outer coat. This coat protect...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2009.01737.x
更新日期:2009-10-01 00:00:00
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journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1994.tb06901.x
更新日期:1994-06-15 00:00:00
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journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/S0378-1097(03)00182-4
更新日期:2003-04-25 00:00:00
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journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2000.tb09210.x
更新日期:2000-08-01 00:00:00
abstract::Pseudomonas aeruginosa is a Gram-negative pathogen and the major cause of mortality in patients with cystic fibrosis. The mechanisms that P. aeruginosa strains use to regulate intracellular zinc have an effect on infection, antibiotic resistance and the propensity to form biofilms. However, zinc homeostasis in P. aeru...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnx151
更新日期:2017-09-01 00:00:00
abstract::An 18-kDa protein that occurs in Vibrio cholerae has been described as an in vivo and low-iron regulated outer membrane antigen. Monoclonal antibodies which recognized this antigen were protective as passive vaccines in the infant rabbit model of cholera disease. In this study, those monoclonal antibodies were used in...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1993.tb06360.x
更新日期:1993-07-15 00:00:00
abstract::An inducible mycelial beta-glucosidase from Scytalidum thermophilum was characterized. The enzyme exhibited a pI of 6.5, a carbohydrate content of 15%, and an apparent molecular mass of about 40 kDa. Optima of temperature and pH were 60 degrees C and 6.5, respectively. The enzyme was stable up to 1 h at 50 degrees C a...
journal_title:FEMS microbiology letters
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abstract::Streptococcus equi ssp. equi is the causative agent of strangles, a highly contagious and serious disease in the upper respiratory tract of horses. The present study describes the characterization of IdeE, a homolog of the secreted IgG-specific protease IdeS/Mac of Streptococcus pyogenes. The activity of IdeE is compa...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2006.00404.x
更新日期:2006-09-01 00:00:00
abstract::Phlebia tremellosa decolourised eight synthetic textile dyes (200 mg l(-1)) by greater than 96% within 14 days under stationary incubation conditions. High performance liquid chromatography analysis of culture supernatants indicated that Remazol Black B was degraded by the fungus, however, complete mineralisation did ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2000.tb09174.x
更新日期:2000-07-01 00:00:00
abstract::The first prokaryotic urea carboxylase has previously been purified and characterized from Oleomonas sagaranensis. As the results indicated the presence of an ATP-dependent urea degradation pathway in Bacteria, the characterization of the second component of this pathway, allophanate hydrolase, was carried out. The ge...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/j.femsle.2005.02.023
更新日期:2005-04-01 00:00:00
abstract::Growth of Pseudomonas aeruginosa on acyclic terpene alcohols (citronellol) and on other methyl-branched compounds such as leucine or isovalerate requires a functional leucine/isovalerate utilization (Liu) pathway. In this study, we investigated the liuABCDE gene cluster by insertion mutant analysis, heterologous expre...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2008.01266.x
更新日期:2008-09-01 00:00:00
abstract::Pseudomonas aeruginosa is an opportunistic pathogen that can cause life-threatening infections in patients admitted to intensive care units. Resistance rapidly develops against two drugs of choice: ceftazidime and meropenem. Several therapeutic protocols were compared for reduction in viable cells and limiting develop...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnx142
更新日期:2017-08-01 00:00:00
abstract::Shigella strains are human pathogens and their identification is usually based on their O-antigens. The O-antigen gene cluster of Shigella boydii O11 was sequenced. All the expected genes for the synthesis of the O-antigen were identified on the basis of homology and genes for the biosynthesis of dTDP-l-Rhamnose, gene...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/j.femsle.2004.03.021
更新日期:2004-05-01 00:00:00
abstract::A Na(+)/H(+) antiporter gene was isolated from alkaliphilic Bacillus sp. G1. The full-length sequence of the Na(+)/H(+) antiporter gene was obtained using a genome walking method, and designated as g1-nhaC. An ORF preceded by a promoter-like sequence and a Shine-Dalgarno sequence, and followed by a terminator-like seq...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2007.00925.x
更新日期:2007-11-01 00:00:00
abstract::A CO-reactive hemoprotein was purified from the mitochondrial membrane fraction of Tetrahymena pyriformis. It showed absorption peaks at 615 and 455 nm in the reduced form and an alpha peak at 565 nm in the pyridine ferrohemochrome spectrum. Although the spectral properties were apparently similar to those of 'cytochr...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1993.tb06423.x
更新日期:1993-08-15 00:00:00
abstract::Mycobacterium leprae, an obligate intracellular pathogen, shows a unique tropism for Schwann cells (SC). This leads to the peripheral neuropathy disorder observed in leprosy. In this study, we investigated signal transduction events and the intracellular fate of M. leprae during the interaction of the microorganism wi...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/j.femsle.2004.08.007
更新日期:2004-09-15 00:00:00
abstract::We have studied the intraperoxisomal location of catalase in peroxisomes of methanol-grown Hansenula polymorpha by (immuno)cytochemical means. In completely crystalline peroxisomes, in which the crystalline matrix is composed of octameric alcohol oxidase (AO) molecules, most of the catalase protein is located in a nar...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(92)90481-3
更新日期:1992-05-15 00:00:00