Results 11 to 20 of about 44,016 (219)

Immunodetection of 5′-methylcytosine on Giemsa-stained chromosomes [PDF]

open access: yesBioTechniques, 2005
BioTechniques 527 In higher vertebrates, the major, if not the only, covalent modification of DNA is a methyl-group present at the C5 position of cytosine yielding 5′-methylcytosine (5′-MC). This modification occurs only in the context of CpG dinucleotides, short sequences that are significantly underrepresented in the genome but are found frequently ...
Werner Pfarr   +3 more
doaj   +3 more sources

Identification and validation of 5-methylcytosine-associated genes in diffuse large B-cell lymphoma

open access: yesHeliyon, 2023
5-methylcytosine modifications play a significant role in carcinogenesis; however, studies exploring 5-methylcytosine-related genes in diffuse large B-cell lymphoma patients are lacking.
Cheng Xing   +14 more
doaj   +1 more source

The 5-Methylcytosine RNA Modification in Hepatitis B Virus-Negative Hepatocellular Carcinoma: Insights From Long-Read Nanopore Sequencing. [PDF]

open access: yesMol Carcinog
ABSTRACT 5‐Methylcytosine (m5C) RNA modification contributes to tumor initiation and progression. However, its transcriptome‐wide distribution patterns and biological implications in hepatitis B virus (HBV)‐negative hepatocellular carcinoma (HCC) remain poorly understood.
Sun T   +12 more
europepmc   +2 more sources

Bifunctional Role of Fe(II)/2OG-Dependent TET Family 5-Methylcytosine Dioxygenases and ALKBH2,3 in Modified Cytosine Demethylation

open access: yesBioChem, 2022
Three forms of methylated cytosines are present in the eukaryotic genome: 3-methylcytosine, 4-methylcytosine and 5-methylcytosine. 3-methylcytosines create methyl lesions, which impair local DNA function and flexibility, resulting in replication and ...
Aninda Sundar Dey
doaj   +1 more source

Poly(ADP-ribosyl)ation is involved in the epigenetic control of TET1 gene transcription [PDF]

open access: yes, 2014
TET enzymes are the epigenetic factors involved in the formation of the Sixth DNA base 5-hydroxymethylcytosine, whose deregulation has been associated with tumorigenesis.
Bacalini, MARIA GIULIA   +9 more
core   +12 more sources

5-Hydroxymethylcytosine Loss in Conjunctival Melanoma

open access: yesDermatopathology, 2021
Aims: Conjunctival and cutaneous melanoma partially share similar clinical and molecular backgrounds. As 5-hydroxymethylcytosine (5-hmC) loss has been demonstrated in cutaneous melanoma, we decided to assess if similar changes were occurring in ...
Alexandre Stahl   +5 more
doaj   +1 more source

Levels of DNA cytosine methylation in the Drosophila genome [PDF]

open access: yesPeerJ, 2018
Insects provide an accessible system to study the contribution of DNA methylation to complex epigenetic phenotypes created to regulate gene expression, chromatin states, imprinting and dosage compensation.
Saniya Deshmukh   +4 more
doaj   +2 more sources

Dynamics of 5-methylcytosine and 5-hydroxymethylcytosine during pronuclear development in equine zygotes produced by ICSI [PDF]

open access: yes, 2017
Background: Global epigenetic reprogramming is considered to be essential during embryo development to establish totipotency. In the classic model first described in the mouse, the genome-wide DNA demethylation is asymmetric between the paternal and the ...
De Schauwer, Catharina   +3 more
core   +1 more source

Whole Genome 5′-Methylcytosine Level Quantification in Cirrhotic HCV-Infected Egyptian Patients with and without Hepatocellular Carcinoma

open access: yesInternational Journal of Genomics, 2020
DNA methylation is an epigenetic mechanism used by cells to control gene expression. DNA methylation is a commonly used epigenetic signaling tool that can hold genes in the “off” position.
Ahmed M. Awad   +3 more
doaj   +1 more source

A mutant of uracil DNA glycosylase that distinguishes between cytosine and 5-methylcytosine. [PDF]

open access: yesPLoS ONE, 2014
We demonstrate that a mutant of uracil DNA glycosylase (N123D:L191A) distinguishes between cytosine and methylcytosine. Uracil DNA glycosylase (UDG) efficiently removes uracil from DNA in a reaction in which the base is flipped into the enzyme's active ...
Scott T Kimber, Tom Brown, Keith R Fox
doaj   +1 more source

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