Results 61 to 70 of about 79,534 (186)

A circuitous route for in vitro multi-enzyme cascade production of cytidine triphosphate to overcome the thermodynamic bottleneck

open access: yesBioresources and Bioprocessing
Cytidine triphosphate (CTP), as a substance involved in the metabolism of phospholipids, proteins and nucleic acids, has precise drug effects and is a direct precursor for the synthesis of drugs such as citicoline.
Zonglin Li   +3 more
doaj   +1 more source

Population level analysis of human immunodeficiency virus type 1 hypermutation and its relationship with APOBEC3G and vif genetic variation [PDF]

open access: yes, 2006
APOBEC3G and APOBEC3F restrict human immunodeficiency virus type 1 (HIV-1) replication in vitro through the induction of G!92A hypermutation; however, the relevance of this host antiviral strategy to clinical HIV-1 is currently not known.
Pace, C.   +6 more
core   +2 more sources

Multiple gene substitution by Target-AID base-editing technology in tomato

open access: yesScientific Reports, 2020
The use of Target activation-induced cytidine deaminase (Target-AID) base-editing technology with the CRISPR-Cas 9 system fused with activation-induced cytidine deaminase (AID) resulted in the substitution of a cytidine with a thymine.
Johan Hunziker   +5 more
doaj   +1 more source

APOBEC-related mutagenesis and neo-peptide hydrophobicity: implications for response to immunotherapy. [PDF]

open access: yes, 2019
Tumor-associated neo-antigens are mutated peptides that allow the immune system to recognize the affected cell as foreign. Cells carrying excessive mutation load often develop mechanisms of tolerance.
Boichard, Amélie   +8 more
core  

Profile of Nucleotides and Nucleosides in Taiwanese Human Milk

open access: yesPediatrics and Neonatology, 2011
Human milk–borne nucleotides and their related metabolic products have been reported to have important physiological roles in breast-fed infants. The purpose of this study was to measure the concentrations of free nucleotides and nucleosides in human ...
Kuo-Yu Liao   +5 more
doaj   +1 more source

PARP-dependent and NAT10-independent acetylation of N4-cytidine in RNA appears in UV-damaged chromatin

open access: yesEpigenetics & Chromatin, 2023
RNA modifications have been known for many years, but their function has not been fully elucidated yet. For instance, the regulatory role of acetylation on N4-cytidine (ac4C) in RNA can be explored not only in terms of RNA stability and mRNA translation ...
Alena Svobodová Kovaříková   +3 more
doaj   +1 more source

Functional and genetic evidence that nucleoside transport is highly conserved in Leishmania species: Implications for pyrimidine-based chemotherapy [PDF]

open access: yes, 2017
Leishmania pyrimidine salvage is replete with opportunities for therapeutic intervention with enzyme inhibitors or antimetabolites. Their uptake into cells depends upon specific transporters; therefore it is essential to establish whether various ...
Ali, Juma A.M.   +7 more
core   +2 more sources

Contribution of Cytidine Deaminase to Thymidylate Biosynthesis in Trypanosoma brucei: Intracellular Localization and Properties of the Enzyme

open access: yesmSphere, 2019
Cytidine deaminase (CDA) is a pyrimidine salvage enzyme that catalyzes cytidine and deoxycytidine hydrolytic deamination to yield uridine and deoxyuridine.
Ana Moro-Bulnes   +6 more
doaj   +1 more source

Structural Insights into APOBEC3-Mediated Lentiviral Restriction

open access: yesViruses, 2020
Mammals have developed clever adaptive and innate immune defense mechanisms to protect against invading bacterial and viral pathogens. Human innate immunity is continuously evolving to expand the repertoire of restriction factors and one such family of ...
Krista A. Delviks-Frankenberry   +2 more
doaj   +1 more source

Cofactor Fingerprinting with STD NMR to Characterize Proteins of Unknown Function: Identification of a Rare cCMP Cofactor Preference [PDF]

open access: yes, 2004
Proteomics efforts have created a need for better strategies to functionally categorize newly discovered proteins. To this end, we have employed saturation transfer difference NMR with pools of closely related cofactors, to determine cofactor preferences.
Sem, Daniel, Yao, Huili
core   +1 more source

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