Results 31 to 40 of about 2,860,424 (274)

Antibodies to the DNA-directed RNA polymerase II subunit RPB1 occur with highest frequency in centenarians [PDF]

open access: yesImmunity & Ageing, 2016
Recently, phage display technology has made it possible to define the circulating repertoire of humoral immunity. This study was designed to define the circulating antibodies specific to centenarians.We used a phage-displayed combinatorial peptide library to screen for peptides (YSATLRY and YSPTLFY) that preferentially react with the IgG fraction of ...
Han, Jungwon   +7 more
openaire   +3 more sources

Investigation of Multi-Subunit Mycobacterium tuberculosis DNA-Directed RNA Polymerase and Its Rifampicin Resistant Mutants

open access: yesInternational Journal of Molecular Sciences, 2023
Emerging Mycobacterium tuberculosis (Mtb) resistant strains have continued to limit the efficacies of existing antitubercular therapies. More specifically, mutations in the RNA replicative machinery of Mtb, RNA polymerase (RNAP), have been widely linked to rifampicin (RIF) resistance, which has led to therapeutic failures in many clinical cases ...
Mokgerwa Zacharia Monama   +2 more
openaire   +2 more sources

A small RNA response at DNA ends in Drosophila [PDF]

open access: yes, 2012
Small RNAs have been implicated in numerous cellular processes, including effects on chromatin structure and the repression of transposons. We describe the generation of a small RNA response at DNA ends in Drosophila that is analogous to the recently ...
Förstemann, Klaus   +2 more
core   +1 more source

Analyses of the archaeal transcription cycle reveal a mosaic of eukaryotic RNA polymerase II and III-like features [PDF]

open access: yes, 2009
Novel mechanistic properties of the archaeal transcription system that reveal similarities especially to the eukaryotic RNA polymerase II and III systems were presented in thesis.
Spitalny, Patrizia
core   +1 more source

Atypical DNA methylation of genes encoding cysteine-rich peptides in Arabidopsis thaliana

open access: yesBMC Plant Biology, 2012
Background In plants, transposons and non-protein-coding repeats are epigenetically silenced by CG and non-CG methylation. This pattern of methylation is mediated in part by small RNAs and two specialized RNA polymerases, termed Pol IV and Pol V, in a ...
You Wanhui   +9 more
doaj   +1 more source

A new yeast poly(A) polymerase complex involved in RNA quality control [PDF]

open access: yes, 2005
Eukaryotic cells contain several unconventional poly(A) polymerases in addition to the canonical enzymes responsible for the synthesis of poly(A) tails of nuclear messenger RNA precursors.
Sabine Dettwiler (27038)   +36 more
core   +1 more source

Mode of inhibition of HIV reverse transcriptase by 2-hexaprenylhydroquinone, a novel general inhibitor of RNA-and DNA-directed DNA polymerases [PDF]

open access: yesBiochemical Journal, 1997
A natural compound from the Red Sea sponge Ircinia sp., 2-hexaprenylhydroquinone (HPH), has been shown to be a general inhibitor of retroviral reverse transcriptases (from HIV-1, HIV-2 and murine leukaemia virus) as well as of cellular DNA polymerases (Escherichia coli DNA polymerase I, and DNA polymerases α and β).
S, Loya, A, Rudi, Y, Kashman, A, Hizi
openaire   +2 more sources

Molecular genetic analysis of siRNA biogenesis and function in Arabidopsis thaliana [PDF]

open access: yes, 2009
In diverse eukaryotes, small RNA products of Dicer-like (DCL) proteins regulate mRNA stability or translation, and direct chromatin modifications to genomic regions, phenomena collectively known as RNA silencing.
Blevins, Todd Lucas
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

Structure of the Complete RNA Polymerase II Elongation Complex and its Interaction with the Elongation Factor TFIIS [PDF]

open access: yes, 2005
This thesis describes crystal structures of complete, 12-subunit yeast RNA polymerase II (Pol II) in complex with a synthetic transcription bubble and product RNA, with an NTP substrate analogue, and in complex with the transcription elongation factor ...
Kettenberger, Hubert
core   +1 more source

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