Results 21 to 30 of about 16,026 (192)

Precise base editing with CC context-specificity using engineered human APOBEC3G-nCas9 fusions

open access: yesBMC Biology, 2020
Background Cytidine base editors (CBEs), composed of a cytidine deaminase fused to Cas9 nickase (nCas9), enable efficient C-to-T conversion in various organisms. However, current base editors can induce unwanted bystander C-to-T conversions when multiple
Zhiquan Liu   +7 more
doaj   +1 more source

Cytidine Deaminase—A Marker for Pre-Eclampsia? [PDF]

open access: yesAnnals of Clinical Biochemistry: International Journal of Laboratory Medicine, 1985
Cytidine deaminase (cytidine aminohydrolase, EC 3.5.4.5) was measured in blood collected for routine antenatal monitoring from 590 unselected pregnant women. The enzyme measurements were made without prior knowledge of the clinical condition of the patients.
T J, Baines, A, Clark
openaire   +2 more sources

Single-stranded DNA binding proteins influence APOBEC3A substrate preference

open access: yesScientific Reports, 2021
The cytidine deaminase, APOBEC3A (A3A), is a prominent source of mutations in multiple cancer types. These APOBEC-signature mutations are non-uniformly distributed across cancer genomes, associating with single-stranded (ss) DNA formed during DNA ...
Amber L. Brown   +5 more
doaj   +1 more source

Isoenzymatic forms of human cytidine deaminase [PDF]

open access: yesProtein Engineering Design and Selection, 2005
Cytidine deaminase (CDA) purified from human placenta revealed the presence of five isoenzymatic forms that differ only in their isoelectric point. Since human cytidine deaminase exists in two variants (CDA 1 and CDA 2) with a non-conservative amino acid substitution at codon 27, in this work we demonstrate that these two variants may combine together ...
VINCENZETTI, Silvia   +7 more
openaire   +3 more sources

Efficient deamination of 5-methylcytidine and 5-substituted cytidine residues in DNA by human APOBEC3A cytidine deaminase. [PDF]

open access: yesPLoS ONE, 2013
Deamination of 5-methylcytidine (5MeC) in DNA results in a G:T mismatch unlike cytidine (C) deamination which gives rise to a G:U pair. Deamination of C was generally considered to arise spontaneously.
Rodolphe Suspène   +3 more
doaj   +1 more source

AID/APOBEC-like cytidine deaminases are ancient innate immune mediators in invertebrates

open access: yesNature Communications, 2018
The AID/APOBEC cytidine deaminase family are nucleic acid editors, important for antigen receptor expression and thought to have evolved along with vertebrate adaptive immunity.
Mei-Chen Liu   +5 more
doaj   +1 more source

Early relapse on adjuvant gemcitabine associated with an exceptional response to 2nd line capecitabine chemotherapy in a patient with pancreatic adenosquamous carcinoma with strong intra-tumoural expression of cytidine deaminase: a case report

open access: yesBMC Cancer, 2020
Background Pancreatic adenosquamous carcinoma has a poor prognosis, with limited prospective trial data to guide optimal treatment. The potential impact of drug metabolism on the treatment response of patients with pancreatic adenosquamous carcinoma is ...
Claire M. Connell   +8 more
doaj   +1 more source

Restriction of Foamy Viruses by APOBEC Cytidine Deaminases [PDF]

open access: yesJournal of Virology, 2006
ABSTRACT Foamy viruses (FVs) are nonpathogenic retroviruses infecting many species of mammals, notably primates, cattle, and cats. We have examined whether members of the apolipoprotein B-editing catalytic polypeptide-like subunit (APOBEC) family of antiviral cytidine deaminases restrict replication of simian FV.
Delebecque, Frédéric   +9 more
openaire   +4 more sources

APOBEC3G & HTLV-1: Inhibition without deamination

open access: yesRetrovirology, 2005
APOBEC3G is a cellular cytidine deaminase that was recently identified as the Vif-sensitive antiviral host factor responsible for the restriction of vif-defective HIV-1 in primary human cells and certain non-permissive T cell lines.
Strebel Klaus
doaj   +1 more source

Highly-potent, synthetic APOBEC3s restrict HIV-1 through deamination-independent mechanisms.

open access: yesPLoS Pathogens, 2021
The APOBEC3 (A3) genes encode cytidine deaminase proteins with potent antiviral and anti-retroelement activity. This locus is characterized by duplication, recombination, and deletion events that gave rise to the seven A3s found in primates.
Mollie M McDonnell   +5 more
doaj   +1 more source

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