Abstract:
:Pyoverdine (PVDI) has been reported to act both as a siderophore for scavenging iron (a key nutrient) and a signaling molecule for the expression of virulence factors. This compound is itself part of a core set of virulence factors produced by Pseudomonas aeruginosa during infections. Once secreted into the bacterial environment and having scavenged ferric iron, PVDI-Fe3+ is taken back into the P. aeruginosa periplasm via the outer membrane transporters FpvAI and FpvB. Iron release from PVDI in the bacterial periplasm involves numerous proteins encoded by the fpvGHJKCDEF genes and a mechanism of iron reduction. Here, we investigated the global interacting network between these various proteins using systematic bacterial two-hybrid screening. We deciphered a network of five interacting proteins composed of two inner-membrane proteins, FpvG (iron reductase) and FpvH (unknown function), and three periplasmic proteins, FpvJ (unknown function), FpvF (periplasmic PVDI-binding protein), and FpvC (iron periplasmic-binding protein). This interacting network strongly suggests the existence of a large protein machinery composed of these five proteins, all playing a role in iron acquisition by PVDI. Furthermore, we discovered an interaction between the periplasmic siderophore binding protein FpvF and the PvdRT-OpmQ efflux pump, also suggesting a role for FpvF in apo-PVDI recycling and secretion after iron delivery. These results highlight a multi-protein complex that drives iron release from PVDI in the periplasm of P. aeruginosa.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Bonneau A,Roche B,Schalk IJdoi
10.1038/s41598-019-56913-xsubject
Has Abstractpub_date
2020-01-10 00:00:00pages
120issue
1issn
2045-2322pii
10.1038/s41598-019-56913-xjournal_volume
10pub_type
杂志文章abstract::The aim of this study was to explore whether rotational three-dimensional (3D) visualization of optical coherence tomography angiography (OCTA) volume data may yield valuable information regarding diabetic retinal microaneurysm (MA) characteristics. In this retrospective, observational study, we collected data from 20...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-53357-1
更新日期:2019-11-14 00:00:00
abstract::This study investigated the glucono-δ-lactone (GDL)-induced aggregation of isoflavones and soy proteins in soymilk. High-performance liquid chromatography (HPLC) analysis indicated that isoflavones mixed with β-conglycinin (7S) and glycinin (11S) proteins formed 7S-isoflavone and 11S-isoflavone complexes in soymilk su...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep35718
更新日期:2016-10-20 00:00:00
abstract::In this work, CoMoO4@NiMoO4·xH2O core-shell heterostructure electrode is directly grown on carbon fabric (CF) via a feasible hydrothermal procedure with CoMoO4 nanowires (NWs) as the core and NiMoO4 nanosheets (NSs) as the shell. This core-shell heterostructure could provide fast ion and electron transfer, a large num...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep41088
更新日期:2017-01-20 00:00:00
abstract::Neonatal hypoxic-ischaemic (HI) encephalopathy is among the most serious complications in neonatology. In the present study, we studied the immediate (0 hour), subacute (36 hours) and late (144 hours) responses of the neonatal brain to experimental HI insult in laboratory rats. At the striatal level, the mass spectrom...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-25088-2
更新日期:2018-05-03 00:00:00
abstract::Here we provide, at least to our knowledge, the first evidence that aripiprazole (APPZ) in the water blunts the stress response of exposed fish in a concentration ten times lower than the concentration detected in the environment. Although the mechanism of APPZ in the neuroendocrine axis is not yet determined, our res...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep37612
更新日期:2016-11-22 00:00:00
abstract::Nitrous oxide (N2O) is a potent greenhouse gas. In North China, vegetable fields are amended with high levels of N fertilizer and irrigation water, which causes massive N2O flux. The aim of this study was to determine the contribution of microbial processes to N2O production and characterize isotopic signature effects...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep29257
更新日期:2016-07-08 00:00:00
abstract::The Transient Receptor Potential vanilloid 4 ion channel (TRPV4) is an important sensor for osmotic and mechanical stimuli in the musculoskeletal system, and it is also involved in processes of nociception. In this study we investigated the putative role of TRPV4 ion channels in joint pain. In anesthetized rats we rec...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-47342-x
更新日期:2019-07-29 00:00:00
abstract::Dengue virus infection is a global threat for which no specific treatment has not been established. Previous reports suggested chrysin and flavanone derivatives were potential flaviviral inhibitors. Here, we reported two halogenated chrysins, abbreviated FV13 and FV14, were highly potent against DENV1-4 and ZIKV infec...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-14121-5
更新日期:2017-10-20 00:00:00
abstract::Noise stress is a common environmental pollutant whose adverse effect on offspring performance has been less studied. This study was novel in terms of using "noise" as a prenatal stress compared with physical stress to explore the effect of stress during gestation on HPA axis activation, cognitive performance, and mot...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-09799-6
更新日期:2017-09-05 00:00:00
abstract::The outbreak of multidrug-resistant pathogenic bacteria made the discovery of novel control strategies necessary. Phages have regained attention for their specific lytic activity against pathogenic bacterium. A newly isolated phage infecting the clinical Escherichia coli isolates, including several multidrug-resistant...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-26004-4
更新日期:2018-05-24 00:00:00
abstract::Studies on the transcriptional control of gene expression play an important role in many areas of biology. Reference genes, which are often referred to as housekeeping genes, such as GAPDH, G3PDH, EF2, RpL7A, RpL10, TUBα and Actin, have traditionally been assumed to be stably expressed in all conditions, and they are ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-08630-6
更新日期:2017-08-21 00:00:00
abstract::Pseudomonas aeruginosa is a highly invasive human pathogen in spite of the absence of classical host specific virulence factors. Virulence factors regulated by quorum sensing (QS) in P. aeruginosa cause acute infections to shift to chronic diseases. Several small regulatory RNAs (sRNAs) mediate fine-tuning of bacteria...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-36488-9
更新日期:2019-01-23 00:00:00
abstract::Homocysteine (Hcy) has been shown to have a neurotoxic effect on ischemic brain cells; however, the underlying mechanisms remain incompletely understood. Here, we examined whether Hcy treatment influences mitochondria injury, oxidative stress, and mitochondrial STAT3 (mitoStat3) expression in rat ischemic brain. Our r...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-07112-z
更新日期:2017-07-31 00:00:00
abstract::Detection of subclinical mastitis (SCM) in its initial stage can save great economic losses, improve milk quality and animal welfare. We have developed a semiquantitative lateral flow assay for the detection of SCM in dairy cows targeting myeloperoxidase (MPO) enzyme of milk neutrophils. A competitive immunoassay form...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-68174-0
更新日期:2020-07-07 00:00:00
abstract::Advanced maternal age is associated with an increased risk of pregnancy complications. It programmes sex-specific cardiovascular dysfunction in rat offspring, however the intrauterine mechanisms involved remain unknown. This study in the rat assessed the impact of advanced maternal age on placental phenotype in relati...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-53199-x
更新日期:2019-11-28 00:00:00
abstract::Evening chronotype associates with health complications possibly via lifestyle factors, while the contribution of genetics is unknown. The aim was to study the relative contributions of genetics, lifestyle, and circadian-related physiological characteristics in metabolic risk of evening chronotype. In order to capture...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-18268-z
更新日期:2018-01-17 00:00:00
abstract::Due to their multipotentiality and immunomodulation, human mesenchymal stem cells (hMSCs) are widely studied for the treatment of degenerative and inflammatory diseases. Transplantation of hMSCs to damaged tissue is a promising approach for tissue regeneration. However, the physiological mechanisms and regulatory proc...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep30311
更新日期:2016-07-22 00:00:00
abstract::Myopia is the commonest eye disorder in the world. High myopes are predisposed to ocular pathologies. The vasoactive intestinal peptide receptor 2 (VIPR2) gene was identified as a myopia susceptibility locus by our group and another group. We continued to fine-map this locus. A case-control study was performed in 4 se...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-54619-8
更新日期:2019-12-03 00:00:00
abstract::The biggest challenge in colorectal cancer therapy is to avoid intestinal drug absorption before reaching the colon, while focusing on tumor specific delivery with high local concentration and minimal toxicity. In our work, thymoquinone (TQ)-loaded polymeric nanocapsules were prepared using the nanoprecipitation techn...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-67748-2
更新日期:2020-07-03 00:00:00
abstract::MircoRNA's (miR) have been recognised as important modulators of gene expression and potential biomarkers. However, they have been rarely investigated in bio fluids apart from blood. We investigated the association of miR-125b and miR-155 with complications of cirrhosis. Ascites was prospectively collected from patien...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep40556
更新日期:2017-01-11 00:00:00
abstract::Endocannabinoids are small signaling lipids, with 2-arachidonoylglycerol (2-AG) implicated in modulating axonal growth and synaptic plasticity. The concept of short-range extracellular signaling by endocannabinoids is supported by the lack of trans-synaptic 2-AG signaling in mice lacking sn-1-diacylglycerol lipases (D...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep02093
更新日期:2013-01-01 00:00:00
abstract::Pond-dwelling cyclic parthenogens are often proposed to be highly vagile. However, the Holarctic biogeography of parthenogens has been hampered by very limited sampling in the eastern Palearctic. Here we examine the geographic boundaries, diversity, and connectivity across the Palearctic for the Daphnia curvirostris c...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-43281-9
更新日期:2019-05-02 00:00:00
abstract::Transformation optics (TO) concept well known for its huge possibility in patterning the path of electromagnetic waves is exploited to design a beam steering lens. The broadband directive in-phase emission in a desired off-normal direction from an array of equally fed radiators is numerically and experimentally report...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep18819
更新日期:2016-01-05 00:00:00
abstract::An amendment to this paper has been published and can be accessed via a link at the top of the paper. ...
journal_title:Scientific reports
pub_type: 已发布勘误
doi:10.1038/s41598-020-61338-y
更新日期:2020-03-06 00:00:00
abstract::The intermediate filament protein nestin is expressed during embryonic development, but considered largely restricted to areas of regeneration in the adult. Here, we perform a body-wide transcriptome and protein-profiling analysis to reveal that nestin is constitutively, and highly-selectively, expressed in adult huma...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-32859-4
更新日期:2018-10-02 00:00:00
abstract::The G-protein coupled, protease-activated receptor 1 (PAR1) is a membrane protein expressed in astrocytes. Fine astrocytic processes are in tight contact with neurons and blood vessels and shape excitatory synaptic transmission due to their abundant expression of glutamate transporters. PAR1 is proteolytically-activat...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep43606
更新日期:2017-03-03 00:00:00
abstract::Nitric oxide (NO) is an important signalling molecule involved in haemostasis. NO, present as endogenous S-nitrosothiols, is released by cysteine through a transnitrosation reaction. To exploit this mechanism, cysteine was immobilised onto the different carboxylated polyethylene terephthalate (PET) surfaces using 1-st...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-53108-2
更新日期:2019-11-13 00:00:00
abstract::Allocation of limited nutrients, such as nitrogen (N) and phosphorus (P), among plant organs reflects the influences of evolutionary and ecological processes on functional traits of plants, and thus is related to functional groups and environmental conditions. In this study, we tested this hypothesis by exploring the ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep20099
更新日期:2016-02-05 00:00:00
abstract::Autism spectrum disorder involves persistent difficulties in social communication. Although these difficulties affect both verbal and nonverbal communication, there are no quantitative behavioral studies to date investigating the cross-modal coordination of verbal and nonverbal communication in autism. The objective o...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-54587-z
更新日期:2019-12-04 00:00:00
abstract::Chronic HIV infection results in impairment of gut-associated lymphoid tissue leading to systemic immune activation. We previously showed that in early SIV-infected rhesus macaques intestinal dysfunction is initiated with the induction of the IL-1β pathway in the small intestine and reversed by treatment with an exoge...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep24723
更新日期:2016-04-22 00:00:00