نتایج جستجو برای: cas enzyme
تعداد نتایج: 263186 فیلتر نتایج به سال:
Cas1 integrase is the key enzyme of the clustered regularly interspaced short palindromic repeat (CRISPR)-Cas adaptation module that mediates acquisition of spacers derived from foreign DNA by CRISPR arrays. In diverse bacteria, the cas1 gene is fused (or adjacent) to a gene encoding a reverse transcriptase (RT) related to group II intron RTs. An RT-Cas1 fusion protein has been recently shown t...
Objectives: In addition to physical damage, the Covid-19 epidemic can cause psychological problems and anxiety in public. Because the elderly is one of the most vulnerable groups in society, the present study aimed to assess the level of anxiety and obsession caused by the Covid-19 epidemic in the elderly and the relationship of those with the ability to perform activities of daily living (ADL)...
در این آزمایش 14 سویه ازتوباکتر کروکوکوم جداسازی شده از مزارع گندم اطراف تبریز از نظر توان تولید سیدروفور در شرایط درون شیشهای با استفاده از محیط کشت جامد حاوی کرومآزرول-اس مورد ارزیابی قرار گرفتند که برخی از سویههای مورد بررسی از توان تولید سیدروفور نسبتاً بالائی برخوردار بودند. سپس با استفاده از خاک سترون در یک آزمایش گلخانهای با گیاه گندم بهاره رقم فلات در قالب طرح کاملاً تصادفی با 16 تیما...
Cognitive Architectures (CAs) are the core of artificial cognitive systems. A CA is supposed to specify the human brain at a level of abstraction suitable for explaining how it achieves the functions of the mind. Over the years a number of distinct CAs have been proposed by different authors and their limitations and potentials were investigated. These CAs are usually classified as symbolic and...
Carbonic anhydrases (CAs) are metalloenzymes that are omnipresent in nature. CAs catalyze the basic reaction of the reversible hydration of CO₂ to HCO₃- and H⁺ in all living organisms. Photosynthetic organisms contain six evolutionarily different classes of CAs, which are namely: α-CAs, β-CAs, γ-CAs, δ-CAs, ζ-CAs, and θ-CAs. Many of the photosynthetic organisms contain multiple isoforms of each...
Les sacro-iliites infectieuses méritent d'être mieux connues. Leur diagnostic est souvent retardé en raison d'une symptomatologie trompeuse et des diffcultés d'exploration de l'articulation sacro-iliaque. Notre travail est basé sur une étude rétrospective portant sur les cas de SII, recueillis sur une période comprise entre 1997 et 2008 dans notre centre universitaire Sfax-Tunisie. Le diagnosti...
Introduction We have shown previously that C-labeled bicarbonate (HCO3 ) can be hyperpolarized using Dynamic Nuclear Polarisation (DNP) and that when this is injected in vivo, the enzyme carbonic anhydrase (CA) rapidly interconverts this with carbon dioxide (CO2) [1]. Furthermore, we have also shown that selective saturation of the CO2 signal in vivo will decrease the H CO3 signal in the presen...
OBJECTIVES The purpose of this study was to evaluate and compare outcomes of patients undergoing carotid artery stenting (CAS) for ipsilateral restenosis, after either previous CAS or carotid artery endarterectomy (CEA) (CAS-R group), with those of patients who had CAS performed for de novo carotid atherosclerotic stenosis (CAS-DN group). BACKGROUND Therapeutic revascularization strategies to...
cognitive architectures (cas) are the core of artificial cognitive systems. a ca is supposed to specify the human brain at a level of abstraction suitable for explaining how it achieves the functions of the mind. over the years a number of distinct cas have been proposed by different authors and their limitations and potentials were investigated. these cas are usually classified as symbolic and...
The photosensitizer, methylene blue (MB), generates singlet oxygen ((1)O2) that irreversibly inhibits Torpedo californica acetylcholinesterase (TcAChE). In the dark MB inhibits reversibly, binding being accompanied by a bathochromic shift that can be used to show its displacement by other reversible inhibitors binding to the catalytic 'anionic' subsite (CAS), the peripheral 'anionic' subsite (P...
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