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https://www.readbyqxmd.com/read/27533598/a-to-i-rna-editing-independent-of-adars-in-filamentous-fungi
#1
Chenfang Wang, Jin-Rong Xu, Huiquan Liu
ADAR mediated A-to-I RNA editing is thought to be unique to animals and occurs mainly in the non-coding regions. Recently filamentous fungi such as Fusarium graminearum were found to lack orthologs of animal ADARs but have stage-specific A-to-I editing during sexual reproduction. Unlike animals, majority of editing sites are in the coding regions and often result in missense and stop loss changes in fungi. Furthermore, whereas As in RNA stems are targeted by animal ADARs, RNA editing in fungi preferentially targets As in hairpin loops, implying that fungal RNA editing involves mechanisms related to editing of the anticodon loop by ADATs...
October 2, 2016: RNA Biology
https://www.readbyqxmd.com/read/27146037/readat-an-r-package-for-reading-and-working-with-somalogic-adat-files
#2
Richard J Cotton, Johannes Graumann
BACKGROUND: SomaLogic's SOMAscan™ assay platform allows the analysis of the relative abundance of over 1300 proteins directly from biological matrices such as blood plasma and serum. The data resulting from the assay is provided in a proprietary text-based format not easily imported into R. RESULTS: readat is an R package for working with the SomaLogic ADAT file format. It provides functionality for importing, transforming and annotating data from these files...
2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/26934920/genome-wide-a-to-i-rna-editing-in-fungi-independent-of-adar-enzymes
#3
Huiquan Liu, Qinhu Wang, Yi He, Lingfeng Chen, Chaofeng Hao, Cong Jiang, Yang Li, Yafeng Dai, Zhensheng Kang, Jin-Rong Xu
Yeasts and filamentous fungi do not have adenosine deaminase acting on RNA (ADAR) orthologs and are believed to lack A-to-I RNA editing, which is the most prevalent editing of mRNA in animals. However, during this study with the PUK1(FGRRES_01058) pseudokinase gene important for sexual reproduction in Fusarium graminearum, we found that two tandem stop codons, UA(1831)GUA(1834)G, in its kinase domain were changed to UG(1831)GUG(1834)G by RNA editing in perithecia. To confirm A-to-I editing of PUK1 transcripts, strand-specific RNA-seq data were generated with RNA isolated from conidia, hyphae, and perithecia...
April 2016: Genome Research
https://www.readbyqxmd.com/read/26435895/secure-land-tenure-as-prerequisite-towards-sustainable-living-a-case-study-of-native-communities-in-mantob-village-sabah-malaysia
#4
Gaim James Lunkapis
Sustainable livelihoods, once enjoyed by native communities, are often threatened and in danger of extinction when new regulations and other forms of restrictions are introduced. These restrictions are often promoted with intended purposes, such as protecting the environment or securing resources from encroachment. However, these acts are slowly replacing the traditional adat (customs and traditions), which are used to define the rights attached to the use of communal and ancestral land. This is especially true when comes to access to forest products and land, in which native communities have used for generations...
2015: SpringerPlus
https://www.readbyqxmd.com/read/26230688/distribution-of-adat-dependent-codons-in-the-human-transcriptome
#5
Àlbert Rafels-Ybern, Camille Stephan-Otto Attolini, Lluís Ribas de Pouplana
Nucleotide modifications in the anticodons of transfer RNAs (tRNA) play a central role in translation efficiency, fidelity, and regulation of translation, but, for most of these modifications, the details of their function remain unknown. The heterodimeric adenosine deaminases acting on tRNAs (ADAT2-ADAT3, or ADAT) are enzymes present in eukaryotes that convert adenine (A) to inosine (I) in the first anticodon base (position 34) by hydrolytic deamination. To explore the influence of ADAT activity on mammalian translation, we have characterized the human transcriptome and proteome in terms of frequency and distribution of ADAT-related codons...
2015: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/26166670/the-role-of-g22-a-adenosine-deaminase-1-gene-polymorphism-and-the-activities-of-ada-isoenzymes-in-fertile-and-infertile-men
#6
Amir Fattahi, Iraj Khodadadi, Iraj Amiri, Zeinab Latifi, Marzieh Ghorbani, Heidar Tavilani
OBJECTIVE: To evaluate frequency distribution of adenosine deaminase 1 (ADA1) G22 A alleles and genotypes in fertile and infertile men. METHODS: In this study we evaluate frequency distribution of ADA1 G22 A alleles and genotypes in 200 fertile and 200 infertile men. The polymerase chain reaction-restriction fragment length polymorphism technique was used for determining ADA1 G22 A variants. In addition, ADA isoenzymes activities (ADA1 and ADA2) were measured using colorimetric method...
October 2015: Urology
https://www.readbyqxmd.com/read/26040575/knowledge-and-perceptions-of-dementia-and-alzheimer-s-disease-in-four-ethnic-groups-in-copenhagen-denmark
#7
T Rune Nielsen, Gunhild Waldemar
OBJECTIVE: Older people from ethnic minorities are underrepresented in dementia care. Some of the determinants of access to care are knowledge and perceptions of dementia, which may vary between ethnic groups in the population. The aims of this study were to compare knowledge and perceptions of dementia and Alzheimer's disease (AD) among four ethnic groups in Copenhagen, Denmark, and to assess the influence of education and acculturation. METHODS: Quantitative survey data from 260 participants were analyzed: 100 native Danish, and 47 Polish, 51 Turkish, and 62 Pakistani immigrants...
March 2016: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/25630791/the-origin-of-the-adar-gene-family-and-animal-rna-editing
#8
Laura F Grice, Bernard M Degnan
BACKGROUND: ADAR (adenosine deaminase acting on RNA) proteins convert adenosine into inosine in double-stranded RNAs and have been shown to increase gene product diversity in a number of bilaterians, particularly mammals and flies. This enzyme family appears to have evolved from an ADAT (adenosine deaminase acting on tRNA) ancestor, via the addition of a double-stranded RNA binding domain. The modern vertebrate ADAR family is comprised of ADAD, ADAR2 and ADAR1, each of which has a conserved domain architecture...
2015: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/25498408/correlation-between-nutritional-markers-and-appetite-self-assessments-in-hemodialysis-patients
#9
Claudia M C Oliveira, Marcos Kubrusly, André T Lima, Danielle M Torres, Natasha M R Cavalcante, Antônio L C Jerônimo, Thiago C B Oliveira
OBJECTIVE: Protein-energy malnutrition is among the comorbidities that most strongly affect the prognosis of patients with chronic kidney disease. Anorexia, defined as a loss of desire to eat, is one cause of such malnutrition. Tools that evaluate appetite and the correlation between appetite and nutritional parameters require further study. To evaluate the appetite status in patients from 2 hemodialysis clinics in Fortaleza, Brazil and the correlations between appetite (evaluated in the past week and in the past 4 weeks) and demographic, laboratory, and nutritional parameters...
May 2015: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/25496662/learning-motor-skill-and-long-range-correlations
#10
Déborah Nourrit-Lucas, Adaté Olivier Tossa, Grégory Zélic, Didier Delignières
Long-range correlations have been evidenced in a number of experiments, generally using overlearned and overpracticed tasks. The authors hypothesized that long-range correlation could represent the byproduct of learning. They analyzed the series of periods produced by a group of expert and a group of novices during prolonged trials on a ski simulator. Results showed a very low variability in expert's series, as compared to novices. Fractal analyses showed that fluctuations were significantly more structured and correlated in experts...
2015: Journal of Motor Behavior
https://www.readbyqxmd.com/read/22972151/organocatalytic-dynamic-kinetic-resolution-via-conjugate-addition-synthesis-of-chiral-trans-2-5-dialkylcyclohexanones
#11
Ganesh Pandey, Priyanka A Adate, Vedavati G Puranik
A novel strategy of initiating an organocatalysed dynamic kinetic resolution (dr up to 99 : 1 and er up to 94 : 6) for the synthesis of chiral trans-2,5-dialkylcyclohexanones by an asymmetric conjugate addition of dimethyl malonate on to 6-substituted cyclohexenones is reported.
October 3, 2012: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/22056149/comparison-of-markers-of-appetite-and-inflammation-between-hemodialysis-patients-with-and-without-failed-renal-transplants
#12
COMPARATIVE STUDY
Yasar Caliskan, Berna Yelken, Numan Gorgulu, Abdullah Ozkok, Halil Yazici, Aysegul Telci, Aydin Turkmen, Alaattin Yildiz, Mehmet S Sever
OBJECTIVE: The survival of patients returning to hemodialysis (HD) following kidney transplant failure is unfavorable. However, the factors responsible for this poor outcome are largely unknown; chronic inflammation due to failed allograft and malnutrition may contribute to morbidity and mortality. We aim to compare the markers of appetite and malnutrition, and their relation with inflammation in HD patients with and without previous kidney transplantation. METHODS: Fifty-six patients with failed renal allografts at least 3 months on dialysis (31 men, 25 women; mean age, 46 ± 9 years) and 77 HD patients who never underwent a transplant (43 men, 34 women; mean age, 50 ± 15 years) were included in the study...
March 2012: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/21971547/disconnected-interacting-protein-1-binds-with-high-affinity-to-pre-trna-and-adat
#13
Daniel J Catanese, Kathleen S Matthews
Disconnected Interacting Protein 1 (DIP1), a member of the double-stranded RNA-binding protein family based on amino acid sequence, was shown previously to form complexes with multiple transcription factors in Drosophila melanogaster. To explore this protein further, we have undertaken sedimentation equilibrium experiments that demonstrate that DIP1-c (longest isoform of DIP1) is a dimer in solution, a characteristic common to other members of the dsRNA-binding protein family. The closest sequence identity for DIP1 is found within the dsRBD sequences of RNA editase enzymes...
October 28, 2011: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/21919946/adenosine-deaminase-activity-in-fertile-and-infertile-men
#14
F Rostampour, M Biglari, A Vaisi-Raygani, S Salimi, H Tavilani
Adenosine deaminase (ADA; E.C.3.5.4.4) catalyses the deamination of adenosine to inosine. In the human reproductive system, the importance of enzymes that affect metabolism of adenosine, particularly adenosine deaminase, has been noticed. The purpose of this study was to determine the plasma activities of total adenosine deaminase (ADAT), and its isoenzymes, ADA1 and ADA2, in fertile and infertile men. Plasma activities of ADA and its isoenzymes were measured in 55 fertile men and 70 infertile men. There was a significant difference in the ADA1 and ADA2 activities between fertile and infertile individuals (P < 0...
May 2012: Andrologia
https://www.readbyqxmd.com/read/21863745/-the-comparative-study-of-the-medical-action-of-lyuteolin-rosmarinic-acid-and-echinochrom-a-at-experimental-stress-induced-cardiopathology
#15
COMPARATIVE STUDY
A V Tsibul'skiĭ, A M Popov, A A Artiukov, É Ia Kostetskiĭ, O N Krivoshapko, A N Mazeĭka, É P Kozlovskaia
The method of the physical load in condition of the coronary circulation of the blood disturbance, caused mesaton injection, induced development rat cardiopathology, bring about of the heart function decompensation and 40% death of experimenthal animals. Under electronic-microscopic study of rat cardiomyocytes are discovered signs to disorganizations of mitochondrial apparatus of these cells. Administration to therapeutic mode of luteolin and echinochrome A preparations has provided to 100% animal probability of survival...
May 2011: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/21602302/the-c-terminal-end-of-the-trypanosoma-brucei-editing-deaminase-plays-a-critical-role-in-trna-binding
#16
Frank L Ragone, Jessica L Spears, Jessica M Wohlgamuth-Benedum, Nathan Kreel, F Nina Papavasiliou, Juan D Alfonzo
Adenosine to inosine editing at the wobble position allows decoding of multiple codons by a single tRNA. This reaction is catalyzed by adenosine deaminases acting on tRNA (ADATs) and is essential for viability. In bacteria, the anticodon-specific enzyme is a homodimer that recognizes a single tRNA substrate (tRNA(Arg)(ACG)) and can efficiently deaminate short anticodon stem-loop mimics of this tRNA in vitro. The eukaryal enzyme is composed of two nonidentical subunits, ADAT2 and ADAT3, which upon heterodimerization, recognize seven to eight different tRNAs as substrates, depending on the organism, and require a full-length tRNA for activity...
July 2011: RNA
https://www.readbyqxmd.com/read/21507956/a-single-zinc-ion-is-sufficient-for-an-active-trypanosoma-brucei-trna-editing-deaminase
#17
Jessica L Spears, Mary Anne T Rubio, Kirk W Gaston, Ewa Wywial, Alexandros Strikoudis, Janusz M Bujnicki, F Nina Papavasiliou, Juan D Alfonzo
Editing of adenosine (A) to inosine (I) at the first anticodon position in tRNA is catalyzed by adenosine deaminases acting on tRNA (ADATs). This essential reaction in bacteria and eukarya permits a single tRNA to decode multiple codons. Bacterial ADATa is a homodimer with two bound essential Zn(2+). The ADATa crystal structure revealed residues important for substrate binding and catalysis; however, such high resolution structural information is not available for eukaryotic tRNA deaminases. Despite significant sequence similarity among deaminases, we continue to uncover unexpected functional differences between Trypanosoma brucei ADAT2/3 (TbADAT2/3) and its bacterial counterpart...
June 10, 2011: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/21431062/management-of-thoracoscopic-thymectomy-in-a-myasthenia-gravis-patient
#18
Kavita Adate, Archana Shinde, Shalini Thombre, Kalpana Harnagle
No abstract text is available yet for this article.
January 2011: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/21345877/comparison-of-adamts-1-4-and-5-expression-in-culprit-plaques-between-acute-myocardial-infarction-and-stable-angina
#19
COMPARATIVE STUDY
Cheol Whan Lee, Ilseon Hwang, Chan-Sik Park, Hyangsin Lee, Duk-Woo Park, Su-Jin Kang, Seung-Hwan Lee, Young-Hak Kim, Seong-Wook Park, Seung-Jung Park
BACKGROUND: ADAMTS (a disintegrin and metalloproteinase with thrombospondin type 1 motifs) proteases might contribute to plaque destabilisation by weakening the fibrous cap. However, little is known about the expression of ADAMTS proteases in coronary atherosclerotic plaques. OBJECTIVE: To examine the expression of ADAMTS proteases in coronary atherectomy samples obtained from patients with acute myocardial infarction (AMI) or stable angina. METHODS: Atherectomy specimens were obtained from 34 patients with AMI (n=23) or stable angina (n=11) who underwent directional coronary atherectomy...
May 2011: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/20971131/three-austin-family-compounds-from-penicillium-brasilianum-exhibit-selective-blocking-action-on-cockroach-nicotinic-acetylcholine-receptors
#20
COMPARATIVE STUDY
Saori Kataoka, Shogo Furutani, Koichi Hirata, Hideo Hayashi, Kazuhiko Matsuda
Austin (AT) and its derivatives (dehydroaustin (DAT) and acetoxydehydroaustin (ADAT)) produced by Penicillium brasilianum MG-11 exhibit toxicity to insects, yet their targets are unknown. Here, we used whole-cell patch-clamp electrophysiology to investigate the action of AT family compounds on cockroach acetylcholine (ACh), γ-aminobutyric acid (GABA) and l-glutamate receptors expressed in the American cockroach (Periplaneta americana) neuron. U-tube application of AT or its derivatives did not induce any current amplitudes, suggesting that they did not act as agonist of these three receptors...
January 2011: Neurotoxicology
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