Results 61 to 70 of about 18,590,986 (140)

Cysteine Methylation Controls Radical Generation in the Cfr Radical AdoMet rRNA Methyltransferase [PDF]

open access: yes, 2013
The 'radical S-adenosyl-L-methionine (AdoMet)' enzyme Cfr methylates adenosine 2503 of the 23S rRNA in the peptidyltransferase centre (P-site) of the bacterial ribosome.
Driesener, RC   +17 more
core   +2 more sources

Biphasic kinetics of the human DNA repair protein MED1 (MBD4), a mismatch-specific DNA N-glycosylase

open access: yes, 2000
The human protein MED1 (also known as MBD4) was previously isolated in a two-hybrid screening using the mismatch repair protein MLH1 as a bait, and shown to have homology to bacterial base excision repair DNA N-glycosylases/lyases.
Genuardi, M, Genuardi, Maurizio
core   +1 more source

Rrp47p is an exosome-associated protein required for the 3 ' processing of stable RNAs [PDF]

open access: yes, 2003
Related exosome complexes of 3'-->5' exonucleases are present in the nucleus and the cytoplasm. Purification of exosome complexes from whole-cell lysates identified a Mg2+-labile factor present in substoichiometric amounts. This protein was identified
Tollervey, D   +4 more
core   +1 more source

1,N2-ethenoguanine, a mutagenic DNA adduct, is a primary substrate of Escherichia coli mismatch-specific uracil-DNA glycosylase and human alkylpurine-DNA-N-glycosylase

open access: yes, 2002
The promutagenic and genotoxic exocyclic DNA adduct 1,N2-ethenoguanine (1,N2-εG) is a major product formed in DNA exposed to lipid peroxidation-derived aldehydes in vitro.
Saparbaev, Murat   +14 more
core   +1 more source

Function of the upstream activating factor in chromatin structure organization and transcriptional regulation at the yeast ribosomal DNA [PDF]

open access: yes, 2010
Chromatin is the template of all processes involved in DNA metabolism in the eukaryotic cell. Accordingly, chromatin is a dynamic structure which changes in its composition and posttranslational modification correlating with the functional state of a ...
Götze, Hannah
core   +1 more source

The kinetics of uracil-N-glycosylase distribution inside replication foci

open access: yes
Mismatched nucleobase uracil is commonly repaired through the base excision repair initiated by DNA uracil glycosylases. The data presented in this study strongly indicate that the nuclear uracil-N-glycosylase activity and nuclear protein content in ...
Ivo Frydrych   +4 more
core   +1 more source

N-Glycosyl Bond Formation Catalyzed by Human Alkyladenine DNA Glycosylase

open access: yes, 2016
The removal of damaged bases by DNA glycosylases is thought to be effectively irreversible, because of an overall equilibrium that favors hydrolysis over synthesis of the N-glycosyl bond.
Suzanne J. Admiraal (2257027)   +1 more
core   +1 more source

DNA Glycosylase Activity Assay Based on Streptavidin Paramagnetic Bead Substrate Capture

open access: yes, 2001
A method to detect DNA glycosylase activity is described. The substrate used was an oligodeoxyribonucleotide with a unique hypoxanthine base, but has general application to any DNA glycosylase or endonuclease.
O'Connor, Timothy R, Xia, Liqun
core   +1 more source

¹⁵N stable isotope probing of pulp and paper wastewaters [PDF]

open access: yes, 2008
Stable isotope probing (SIP) is an established technique that can be applied to identify the metabolically active micro-organisms within a microbial population.
Addison, Sarah Louise
core  

DNA N-glycosylase deficient mice:a tale of redundancy

open access: yes, 2003
The generation of mouse models of base excision repair deficiency has resulted in a re-examination of the cellular defence mechanisms that exist to counteract oxidative base damage.
Elder, RH   +3 more
core   +1 more source

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