Results 11 to 20 of about 160,622 (298)

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   +3 more sources

Cytosine-to-uracil deamination by SssI DNA methyltransferase. [PDF]

open access: yesPLoS ONE, 2013
The prokaryotic DNA(cytosine-5)methyltransferase M.SssI shares the specificity of eukaryotic DNA methyltransferases (CG) and is an important model and experimental tool in the study of eukaryotic DNA methylation.
Ildikó Stier, Antal Kiss
doaj   +3 more sources

Molecular Dynamics Simulation of Melting of the DNA Duplex with Silver-Mediated Cytosine–Cytosine Base Pair

open access: yesComputation
Metal-mediated base pairs in DNA double helix molecules open up broad opportunities for biosensors based on DNA clusters with silver due to their low toxicity and applicability in drug design.
Elena B. Gusarova, Natalya A. Kovaleva
doaj   +2 more sources

Occurrence, Properties, Applications and Analytics of Cytosine and Its Derivatives

open access: yesMolecules
Cytosine and its derivatives are an important research topic in the fields of bioorganic chemistry, molecular biology and medicine due to their key role in the structure and function of nucleic acids.
Mariusz Kluska   +3 more
doaj   +2 more sources

APOBEC3 activity and DNA polymerase-ε deficiency are associated with distinct IDH1 R132 hotspot mutations. [PDF]

open access: yesMol Oncol
Isocitrate dehydrogenase 1 (IDH1) mutations are highly recurrent in multiple human cancer types, including cholangiocarcinoma and glioma. IDH1 R132C is the most common IDH1 mutation in cholangiocarcinoma and likely arises from APOBEC3A‐ or APOBEC3B‐mediated deamination.
Butler KE, Lone BA, Unal E, Banday AR.
europepmc   +2 more sources

Quantum Chemical Study on Interstellar Synthesis of Cytosine by the Automated Reaction Path Search [PDF]

open access: yes, 2022
Novel reaction pathways with the neutral radical-molecule reaction to form cytosine, a nucleobase of DNA and RNA, which can proceed in the interstellar environment, were discovered by automated reaction pathway calculations based on transition state ...
YU, KOMATSU, Taiki, Suzuki
core   +2 more sources

Screening, Manufacturing, Photoluminescence, and Molecular Recognition of Co-Crystals: Cytosine with Dicarboxylic Acids

open access: yes, 2016
A workflow for screening and manufacturing co-crystals was used to produce 4:1 co-crystal of cytosine−oxalic acid dihydrate, 2:1 co-crystal of cytosine−malonic acid, and 2:1 co-crystal of cytosine−succinic acid with melting points of 270.2, 219.2, and ...
Tu Lee (1819789), Pu Yun Wang (2314825)
core   +5 more sources

A radioimmunoassay for cytosine arabinoside [PDF]

open access: yesBritish Journal of Cancer, 1979
A radioimmunoassay (RIA) for cytosine arabinoside (AraC) has been developed using antiserum raised in a sheep to an AraC monophosphate-ovalbumin conjugate. The antibody shows only 0.008% cross-reactivity with uracil arabinoside (AraU) and low (0.023%) cross-reactivity with other commonly co-administered drugs such as cytotoxic and antibacterial agents,
E M, Piall, G W, Aherne, V M, Marks
openaire   +2 more sources

Watson–Crick and Sugar-Edge Base Pairing of Cytosine in the Gas Phase: UV and Infrared Spectra of Cytosine·2-Pyridone [PDF]

open access: yes, 2014
While keto-amino cytosine is the dominant species in aqueous solution, spectroscopic studies in molecular beams and in noble gas matrices show that other cytosine tautomers prevail in apolar environments. Each of these offers two or three H-bonding sites
Ottiger, Philipp   +5 more
core   +2 more sources

Tricky Topology: Persistence of Folded Human Telomeric i-Motif DNA at Ambient Temperature and Neutral pH

open access: yesFrontiers in Chemistry, 2020
i-Motifs are four-stranded DNA structures formed from sequences rich in cytosine, held together by hemi-protonated cytosine-cytosine base pairs. These structures have been utilized extensively as pH-switches in DNA-based nanotechnology.
Mahmoud A. S. Abdelhamid   +3 more
doaj   +1 more source

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