Abstract:
:RNaseIII proteins are dsRNA-specific endonucleases involved in many important biological processes, such as small RNA processing and maturation in eukaryotes. Various small RNAs have been identified in a protozoan parasite Entamoeba histolytica. EhRNaseIII is the only RNaseIII endonuclease domain (RIIID)-containing protein in E. histolytica. Here, we present three crystal structures that reveal several unique structural features of EhRNaseIII, especially the interactions between the two helixes (α1 and α7) flanking the RIIID core domain. Structure and sequence analysis indicate that EhRNaseIII is a noncanonical Dicer and it lacks a dsRBD in the C-terminal region (CTR). In vitro studies suggest that EhRNaseIII prefers to bind and cleave longer dsRNAs, generating products around 25 nucleotides in length. Truncation of the CTR or attaching the dsRBD of Aquifex aeolicus RNaseIII can enhance the binding and cleavage activities of EhRNaseIII. In combination with in vitro crosslinking assay, our results suggested that EhRNaseIII functions in a cooperative mode. We speculate that some partner proteins may exist in E. histolytica and regulates the activity of EhRNaseIII through interaction with its CTR. Our studies support that EhRNaseIII plays an important role in producing small RNAs in E. histolytica.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Yu X,Li X,Zheng L,Ma J,Gan Jdoi
10.1038/srep44832subject
Has Abstractpub_date
2017-03-20 00:00:00pages
44832issn
2045-2322pii
srep44832journal_volume
7pub_type
杂志文章abstract::HLA-haploidentical hematopoietic stem cell transplantation (HSCT) may be an option for severe aplastic anemia (SAA) patients. However, to date, no large-sample studies have been performed to determine which types of SAA patients are suitable for HLA-haploidentical HSCT. We retrospectively studied 189 consecutive patie...
journal_title:Scientific reports
pub_type: 杂志文章,多中心研究
doi:10.1038/s41598-018-20853-9
更新日期:2018-02-06 00:00:00
abstract::Habitat degradation is among the top drivers of the loss of global biodiversity. This problem is particularly acute in coral reef system. Here we investigated whether coral degradation influences predator risk assessment and learning for damselfish. When in a live coral environment, Ambon damselfish were able to learn...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep32542
更新日期:2016-09-09 00:00:00
abstract::B-cell receptor (BCR) signaling plays a critical role in B-cell activation and humoral immunity. In this study, we discovered a critical function of leucine-rich repeat kinase 1 (LRRK1) in BCR-mediated immune responses. Lrrk1(-/-) mice exhibited altered B1a-cell development and basal immunoglobulin production. In addi...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep25738
更新日期:2016-05-11 00:00:00
abstract::Glypican-3 (GPC3) is a cell-surface heparan sulfate proteoglycan highly expressed in hepatocellular carcinoma (HCC). We have generated a group of high-affinity mouse monoclonal antibodies targeting GPC3. Here, we report the humanization and testing of these antibodies for clinical development. We compared the affinity...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep33878
更新日期:2016-09-26 00:00:00
abstract::Graphene oxide-iron oxide (GO-Fe3O4) nanocomposites were synthesised by co-precipitating iron salts onto GO sheets in basic solution. The results showed that formation of two distinct structures was dependent upon the GO loading. The first structure corresponds to a low GO loading up to 10 wt%, associated with the ben...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep04594
更新日期:2014-04-04 00:00:00
abstract::This cross-sectional study aimed to investigate the prevalence and risk factors of chronic kidney disease (CKD) among 1,096 primary care type 2 diabetes (T2DM) patients in northern Thailand between October 2016 and September 2017. CKD was defined as estimated glomerular rate filtration values of <60 mL/min/1.73 m2. Pr...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-63443-4
更新日期:2020-04-10 00:00:00
abstract::Cardiomyocytes differentiated from human pluripotent stem cells provide promising tools for screening of cardiotoxic drugs. For evaluation of human pluripotent stem cell-derived cardiomyocytes for cardiotoxicity test, in the present study, human embryonic stem cells (hESCs) were differentiated to cardiomyocytes, follo...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-14198-y
更新日期:2017-10-23 00:00:00
abstract::Screening and in silico modeling are critical activities for the reduction of experimental costs. They also speed up research notably and strengthen the theoretical framework, thus allowing researchers to numerically quantify the importance of a particular subset of information. For example, in fields such as cancer a...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-33911-z
更新日期:2018-10-24 00:00:00
abstract::Transgenic plants producing insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) are useful for pest control, but their efficacy is reduced when pests evolve resistance. Here we examined the mechanism of resistance to Bt toxin Cry1Ac in the laboratory-selected LF5 strain of the cotton bollworm, Helicov...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep07219
更新日期:2014-11-27 00:00:00
abstract::The brain-derived neurotrophic factor (BDNF) protein is essential for neuronal development. Val66Met (rs6265) is a functional polymorphism at codon 66 of the BDNF gene that affects neuroplasticity and has been associated with cognition, brain structure and function. The aim of this study was to clarify the relationshi...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-74780-9
更新日期:2020-10-21 00:00:00
abstract::Recent decades have experienced the discovery of numerous complex materials. At the root of the complexity underlying many of these materials lies a large number of contending atomic- and largerscale configurations. In order to obtain a more detailed understanding of such systems, we need tools that enable the detecti...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep00329
更新日期:2012-01-01 00:00:00
abstract::Recent studies suggest that mRNAs may be differentially expressed between males and females. This study aimed to perform expression analysis of mRNA and its main regulatory molecule, microRNA (miRNA), to discuss the potential sex-specific expression patterns using abnormal expression profiles from The Cancer Genome At...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep39812
更新日期:2017-01-03 00:00:00
abstract::Parathyroid Hormone-Like Hormone (PTHLH) is an autocrine/paracrine ligand that is up-regulated in head and neck squamous cell carcinoma (HNSCC). However, the cellular function and regulatory mechanism in HNSCC remains obscure. We investigated the clinical significance of PTHLH in HNSCC patients, and verified the role ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep41131
更新日期:2017-01-25 00:00:00
abstract::Species are chronically exposed to ionizing radiation, a natural phenomenon which can be enhanced by human activities. The induced toxicity mechanisms still remain unclear and seem depending on the mode of exposure, i.e. acute and chronic. To better understand these phenomena, studies need to be conducted both at the ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-29033-1
更新日期:2018-07-27 00:00:00
abstract::The dispersal of animals from their birth place has profound effects on the immediate survival and longer-term persistence of populations. Molecular studies have estimated that bumblebee colonies can be established many kilometers from their queens' natal nest site. However, little is known about when and how queens d...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-40355-6
更新日期:2019-03-20 00:00:00
abstract::With limited success achieved in bladder cancer patient management, novel agents are in urgent need for the purpose of therapy and prevention. As a sesquiterpenoid dimmer isolated from Gochnatia pomculat, (-)-gochnatiolide B has been bio-mimetically synthesized in multiple steps with a poor yield, which heavily limite...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-27036-6
更新日期:2018-06-11 00:00:00
abstract::Changes in immune and coagulation systems and possible viral spread through the blood-brain barrier have been described in SARS-CoV-2 infection. In this study, we evaluated the possible retinal involvement and ocular findings in severe COVID-19 pneumonia patients. A cross-sectional study was conducted on 46 patients a...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-74446-6
更新日期:2020-10-15 00:00:00
abstract::Here we show that electrical tuning of the sensitivity of chemitransistor sensors, namely field-effect-transistors (FETs) exploiting nano/mesostructured sensing materials, can be used to effectively address two chief problems of state-of-the-art gas sensors, specifically fabrication reliability and degradation by agin...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep01161
更新日期:2013-01-01 00:00:00
abstract::Annually averaged solar radiation in the McMurdo Dry Valleys, Antarctica has varied by over 20 W m-2 during the past three decades; however, the drivers of this variability are unknown. Because small differences in radiation are important to water availability and ecosystem functioning in polar deserts, determining th...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-23390-7
更新日期:2018-03-22 00:00:00
abstract::Ring-opening graft polymerization (ROGP) of L-Lactide (L-LA) is a practical method of altering the physical and chemical properties of lignocellulose. Previous studies have mainly investigated cellulose and tin-based catalysts, particularly of tin(II) 2-ethylhexanoate (Sn(oct)2), at high temperatures and reported low ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-00464-6
更新日期:2017-04-03 00:00:00
abstract::Flat optics, which could planarize and miniaturize the traditional optical elements, possesses the features of extremely low profile and high integration for advanced manipulation of light. Here we proposed and experimentally demonstrated a planar metalens to realize an ultra-long focal length of ~240λ with a large de...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep09977
更新日期:2015-05-06 00:00:00
abstract::With the reduction of oil and gas reserves and the increase of mining difficulty in Northern China, the carbonate rocks in Southern North China Basin are becoming a significant exploration target for carbonate reservoirs. However, the development characteristics, formation stages, formation environments and mechanisms...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-80878-x
更新日期:2021-01-12 00:00:00
abstract::Parent selection is the core of hybrid breeding. The breeding strategy involving the parental identification of superior open-pollinated progeny of Populous tomentosa germplasm resources can significantly improve the efficiency of parental matching. However, due to some factors such as loose powdering time and pollen ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-74941-w
更新日期:2020-10-29 00:00:00
abstract::Rapid diagnostic tests (RDTs) have been developed to detect influenza A virus for the swift diagnosis and management of patients. However, despite the simplicity and convenience, the low sensitivity of RDTs remains a limitation for their use in point of care testing (POCT). In this study, we developed a rapid fluoresc...
journal_title:Scientific reports
pub_type: 临床试验,杂志文章
doi:10.1038/s41598-018-31786-8
更新日期:2018-09-07 00:00:00
abstract::Metastatic colorectal cancer is the fourth most common cause of cancer death. Current options in palliation such as hyperthermic intraperitoneal chemotherapy (HIPEC) present severe side effects. Recent research efforts suggested the therapeutic use of oxidant-enriched liquid using cold physical plasma. To investigate ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-37169-3
更新日期:2019-01-24 00:00:00
abstract::Spatially explicit information on electric power consumption (EPC) is crucial for effective electricity allocation and utilization. Many studies have estimated fine-scale spatial EPC based on remotely sensed nighttime light (NTL). However, the spatial non-stationary relationship between EPC and NTL at prefectural leve...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-75543-2
更新日期:2020-10-29 00:00:00
abstract::Hypothermic oxygenated machine perfusion (HOPE) was introduced in liver transplantation (LT) to mitigate ischemia-reperfusion injury. Available clinical data mainly concern LT with donors after circulatory-determined death, whereas data on brain-dead donors (DBD) are scarce. To assess the impact of end-ischemic HOPE i...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-45843-3
更新日期:2019-06-27 00:00:00
abstract::The microtubule cytoskeleton is composed of α-tubulin and β-tubulin heterodimers, and it serves to regulate the shape, motility, and division of a cell. Post-translational modifications including acetylation are closely associated with the functional aspects of the microtubule, involving in a number of pathological di...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep27775
更新日期:2016-06-08 00:00:00
abstract::We propose a novel method to achieve tunable plasmon focusing in graphene/photonic-crystal hybrid structure exhibiting all-angle negative refraction at terahertz frequencies. A two-dimensional photonic crystal composed of a square lattice of dielectric rods is constructed on the substrate of a graphene sheet to provid...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep41788
更新日期:2017-02-02 00:00:00
abstract::In response to endotoxemia, the organism triggers an inflammatory response, and the visceral adipose tissue represents a major source of proinflammatory cytokines. The regulation of inflammation response in the adipose tissue is thus of crucial importance. We demonstrated that Regulated in development and DNA damage r...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-07182-z
更新日期:2017-08-01 00:00:00