Results 11 to 20 of about 6,866 (163)

DNA polymerase beta-like nucleotidyltransferase superfamily: identification of three new families, classification and evolutionary history

open access: yesNucleic Acids Research, 1999
A detailed analysis of the polbeta superfamily of nucleotidyltransferases was performed using computer methods for iterative database search, multiple alignment, motif analysis and structural modeling. Three previously uncharacterized families of predicted nucleotidyltransferases are described. One of these new families includes small proteins found in
L, Aravind, E V, Koonin
openaire   +5 more sources

Biochemical Engineering Perspective on cGAS: From Enzyme Discovery to Potential Industrial Application. [PDF]

open access: yesChembiochem
This review examines the structural and enzymatic properties of cyclic GMP‐AMP synthase, including substrate promiscuity, homologs, and engineered variants. In addition, it evaluates potential expression systems for large‐scale enzyme production and analyzes reaction and purification strategies for the synthesis of cyclic dinucleotides to connect ...
Fataeri M, Rosenthal K.
europepmc   +2 more sources

Role of nucleotidyltransferase motifs I, III and IV in the catalysis of phosphodiester bond formation by Chlorella virus DNA ligase [PDF]

open access: yesNucleic Acids Research, 2002
ATP-dependent DNA ligases catalyze the sealing of 5'-phosphate and 3'-hydroxyl termini at DNA nicks by means of a series of three nucleotidyl transfer steps. Here we have analyzed by site-directed mutagenesis the roles of conserved amino acids of Chlorella virus DNA ligase during the third step of the ligation pathway, which entails reaction of the 3 ...
Verl, Sriskanda, Stewart, Shuman
openaire   +2 more sources

MINTmap: fast and exhaustive profiling of nuclear and mitochondrial tRNA fragments from short RNA-seq data. [PDF]

open access: yes, 2017
Transfer RNA fragments (tRFs) are an established class of constitutive regulatory molecules that arise from precursor and mature tRNAs. RNA deep sequencing (RNA-seq) has greatly facilitated the study of tRFs.
Loher, Phillipe   +2 more
core   +2 more sources

Characterization of the Microbial Resistome in Conventional and “Raised Without Antibiotics” Beef and Dairy Production Systems

open access: yesFrontiers in Microbiology, 2019
Metagenomic investigations have the potential to provide unprecedented insights into microbial ecologies, such as those relating to antimicrobial resistance (AMR).
Pablo Rovira   +13 more
doaj   +1 more source

Characterization of wild and captive baboon gut microbiota and their antibiotic resistomes [PDF]

open access: yes, 2018
Antibiotic exposure results in acute and persistent shifts in the composition and function of microbial communities associated with vertebrate hosts.
Boolchandani, Manish   +9 more
core   +2 more sources

Polymorphic toxin systems: Comprehensive characterization of trafficking modes, processing, mechanisms of action, immunity and ecology using comparative genomics

open access: yesBiology Direct, 2012
Background Proteinaceous toxins are observed across all levels of inter-organismal and intra-genomic conflicts. These include recently discovered prokaryotic polymorphic toxin systems implicated in intra-specific conflicts.
Zhang Dapeng   +4 more
doaj   +1 more source

Mechanism of Mg 2+ -accompanied product release in sugar nucleotidyltransferases [PDF]

open access: yes, 2018
The nucleotidyl transfer reaction, catalyzed by sugar nucleotidyltransferases (SNTs), is assisted by two active site Mg 2+ ions. While studying this reaction using X-ray crystallography, we captured snapshots of the pyrophosphate (product) as it exits ...
Awasthi, Shalini   +6 more
core   +1 more source

NF45 dimerizes with NF90, Zfr and SPNR via a conserved domain that has a nucleotidyltransferase fold [PDF]

open access: yes, 2012
Nuclear factors NF90 and NF45 form a complex involved in a variety of cellular processes and are thought to affect gene expression both at the transcriptional and translational level.
Adams   +47 more
core   +1 more source

Biophysical and enzymatic properties of aminoglycoside adenylyltransferase AadA6 from Pseudomonas aeruginosa [PDF]

open access: yes, 2015
The gene coding for the aminoglycoside adenylyltransferase (aadA6) from a clinical isolate of Pseudomonas aeruginosa was cloned and expressed in Escherichia coli strain BL21(DE3)pLysS.
Akdemir, G.   +9 more
core   +2 more sources

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