نتایج جستجو برای: ct dna
تعداد نتایج: 639029 فیلتر نتایج به سال:
we have two part in this thesis, at first: the interaction of native calf thymus dna (ct-dna) with two anthraquinones including quinizarin (1,4- dihydroxy anthraquinone) and danthron (1,8- dihydroxy anthraquinone) in a mixture of 0.04 m brittone-robinson buffer and 50% of ethanol were studied at physiological ph by uv-vis absorption, florescence, circular dichroism spectroscopic methods, viscos...
During DNA damage response (DDR), certain gene rich chromosome territories (CTs) relocate to newer positions within interphase nuclei and revert to their native locations following repair. Such dynamic relocation of CTs has been observed under various cellular conditions, however, the underlying mechanistic basis of the same has remained largely elusive. In this study, we aim to understand the ...
A screen for mutants of budding yeast defective in meiotic gene conversion identified a novel allele of the POL3 gene. POL3 encodes the catalytic subunit of DNA polymerase , an essential DNA polymerase involved in genomic DNA replication. The new allele, pol3-ct, specifies a protein missing the last four amino acids. pol3-ct shows little or no defect in DNA replication, but displays a reduction...
INTRODUCTION Trachoma, caused by the intracellular bacterium Chlamydia trachomatis (Ct), is the leading infectious cause of preventable blindness. Many commercial platforms are available that provide highly sensitive and specific detection of Ct DNA. However, the majority of these commercial platforms are inaccessible for population-level surveys in resource-limited settings typical to trachoma...
Most genetic engineering of plants uses Agrobacterium mediated transformation to introduce novel gene content. In nature, insertion of T-DNA in the plant genome and its subsequent transfer via sexual reproduction has been shown in several species in the genera Nicotiana and Linaria. In these natural examples of horizontal gene transfer from Agrobacterium to plants, the T-DNA donor is assumed to...
Background: Chlamydia trachomatis(CT) is an obligate intracellular bacteria, requires living cells to replicate itself. CT infection can remain up to 4 years in the couple and affect their fertility. The relationship between CT and infertility is very important because most patients are asymptomatic and untreated. After infection with CT, NK activation signals begin through interactions of its ...
BACKGROUND The therapeutic resistance of pancreatic ductal adenocarcinoma (PDAC) is partly ascribed to ineffective delivery of chemotherapy to cancer cells. We hypothesized that physical properties at vascular, extracellular, and cellular scales influence delivery of and response to gemcitabine-based therapy. METHODS We developed a method to measure mass transport properties during routine co...
Translesion synthesis (TLS) is a mutagenic branch of cellular DNA damage tolerance that enables bypass replication over DNA lesions carried out by specialized low-fidelity DNA polymerases. The replicative bypass of most types of DNA damage is performed in a two-step process of Rev1/Polζ-dependent TLS. In the first step, a Y-family TLS enzyme, typically Polη, Polι, or Polκ, inserts a nucleotide ...
چکیده زمینه و هدف: سرطان معده یکی از شایع ترین بدخیمی ها می باشد و تشخیص زود هنگام می تواند در روش درمان مؤثر باشد. ناپایداری ژنومی و در نتیجه بروز تغییرات ژنی یک مرحله مولکولی و پاتوژنیک قاطع می باشد که در اوایل روند سرطان زایی معده رخ می دهد. ژن xrcc1 یکی از مهم ترین ژن های ترمیم dna می باشد. پروتئین xrcc1 نقش اساسی در مسیر ترمیم dna با برداشت باز ایفا می کند. پلی مورفیسم های ژن xrcc1 توانایی...
کلامیدیاها باکتری های اجباری داخل سلولی اند که برای تکثیر خود به سلول های زنده نیاز دارند. به طور میانگین 50% از مردان و 75 % از زنان آلوده به کلامیدیا تراکوماتیس (chlamydia trachomatis : ct) بدون علامت هستند. عفونت ct میتواند تا 4 سال در زوجین حفظ شده و بر باروری آنها تاثیر گذار باشد. وجود ارتباط بین ct و ناباروری از اهمیت زیادی بر خوردار است. از آنجایی که اکثر بیماران بدون علامت بوده و تحت در...
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