Results 11 to 20 of about 98,235 (335)

Protonated pyrimidine-purine-purine triplex [PDF]

open access: yesNucleic Acids Research, 1993
We have studied a protonated pyrimidine-purine-purine (Py-Pu-Pu) triplex, which is formed between the d(C)nd(G)n duplex and the d(AG)m oligonucleotide as the third strand and carries the CG*A+ protonated base-triads. We have observed such an intermolecular complex between a plasmid carrying the d(C)18 d(G)18 insert and the d(AG)5 oligonucleotide ...
V A, Malkov   +6 more
openaire   +2 more sources

The interaction of aflatoxins with purines and purine nucleosides [PDF]

open access: yesBiochemical Journal, 1967
From measurements of thermal hyperchromicity and the behaviour of an aflatoxin-DNA mixture on a Sephadex column it was concluded that aflatoxin B(1) is capable of weak binding to single-stranded DNA. The interactions of the aflatoxins (B(1), G(1) and G(2)) with nucleosides result in difference spectra and suggest that the purine bases and the amino ...
J I, Clifford, K R, Rees
openaire   +2 more sources

Ischemic preconditioning attenuates portal venous plasma concentrations of purines following warm liver ischemia in man [PDF]

open access: yes, 2005
Background/Aims: Degradation of adenine nucleotides to adenosine has been suggested to play a critical role in ischemic preconditioning (IPC). Thus, we questioned in patients undergoing partial hepatectomy whether (i) IPC will increase plasma purine ...
Chouker, A.   +9 more
core   +1 more source

A New Class of Nucleosides. Synthesis, Reactivity and Biological Activity of Keto-Hexose Nucleosides

open access: yesCHIMIA, 1975
Direct oxydation of sterically hindered hexosyl purines led to keto-hexosylpurines, important synthetic intermediates. The first unsaturated keto-nucleosides have also been obtained by acetylation of the corresponding keto-hexosyl purines.
K. Antonakis
doaj   +1 more source

Hoogsteen base pairs proximal and distal to echinomycin binding sites on DNA [PDF]

open access: yes, 1987
Forms of the DNA double helix containing non-Watson-Crick base-pairing have been discovered recently based on x-ray diffraction analysis of quinoxaline antibiotic-oligonucleotide complexes.
Dervan, Peter B., Mendel, David
core   +2 more sources

The exercise sex gap and the impact of the estrous cycle on exercise performance in mice

open access: yesScientific Reports, 2018
Exercise physiology is different in males and females. Females are poorly studied due to the complexity of the estrous cycle and this bias has created an exercise sex gap.
Aderbal S. Aguiar   +4 more
doaj   +1 more source

Purinergic Signalling in Inflammatory Renal Disease

open access: yesFrontiers in Physiology, 2013
Extracellular purines have a role in renal physiology and adaption to inflammation. However, inflammatory renal disease may be mediated by extracellular purines, resulting in renal injury.
Nishkantha eArulkumaran   +6 more
doaj   +1 more source

Scientific investigations of the Nobel prize winner Emil Fischer as a launching pad for the development of biochemistry: a brief overview [PDF]

open access: yesThe Ukrainian Biochemical Journal, 2018
Modern biochemistry and molecular biology would be impossible without discoveries in related fields of science. This paper aims to outline briefly the main stages of scientific activity of a Nobel Prize winner 1902 – German chemist Hermann Emil Fischer ...
T. V. Danylova, S. V. Komisarenko
doaj   +1 more source

Transiently Transfected Purine Biosynthetic Enzymes Form Stress Bodies [PDF]

open access: yes, 2013
It has been hypothesized that components of enzymatic pathways might organize into intracellular assemblies to improve their catalytic efficiency or lead to coordinate regulation.
Cook, Lindsey   +5 more
core   +8 more sources

Gout [PDF]

open access: yes, 2008
INTRODUCTION: Gout affects about 5% of men and 1% of women, with up to 80% of people experiencing a recurrent attack within 3 years. METHODS AND OUTCOMES:We conducted a systematic review and aimed to answer the following clinical questions: What are the
Underwood, Martin
core   +3 more sources

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