Results 61 to 70 of about 5,147 (230)

The structure of Rph, an exoribonuclease from Bacillus anthracis, at 1.7 angstrom resolution [PDF]

open access: yes, 2008
Maturation of tRNA precursors into functional tRNA molecules requires trimming of the primary transcript at both the 5' and 3' ends. Cleavage of nucleotides from the 3' stem of tRNA precursors, releasing nucleotide diphosphates, is accomplished in ...
Blagova, Elena V.   +5 more
core   +2 more sources

The role of ribonucleases in regulating global mRNA levels in the model organism Thermus thermophilus HB8 [PDF]

open access: yes, 2014
BACKGROUND: RNA metabolism, including RNA synthesis and RNA degradation, is one of the most conserved biological systems and has been intensively studied; however, the degradation network of ribonucleases (RNases) and RNA substrates is not fully ...
Akeo Shinkai   +7 more
core   +1 more source

Mitochondrial Genome Engineering: The Revolution May Not Be CRISPR-Ized. [PDF]

open access: yes, 2018
In recent years mitochondrial DNA (mtDNA) has transitioned to greater prominence across diverse areas of biology and medicine. The recognition of mitochondria as a major biochemical hub, contributions of mitochondrial dysfunction to various diseases, and
Gammage, Payam A   +2 more
core   +1 more source

Critical roles for ‘housekeeping’ nucleases in type III CRISPR-Cas immunity

open access: yeseLife, 2022
CRISPR-Cas systems are a family of adaptive immune systems that use small CRISPR RNAs (crRNAs) and CRISPR-associated (Cas) nucleases to protect prokaryotes from invading plasmids and viruses (i.e., phages).
Lucy Chou-Zheng, Asma Hatoum-Aslan
doaj   +1 more source

Pseudomonas aeruginosa Polynucleotide Phosphorylase Contributes to Ciprofloxacin Resistance by Regulating PrtR

open access: yesFrontiers in Microbiology, 2019
Pseudomonas aeruginosa is an opportunistic bacterial pathogen that causes various acute and chronic infections. It is intrinsically resistant to a variety of antibiotics. However, production of pyocins during SOS response sensitizes P.
Zheng Fan   +11 more
doaj   +1 more source

Polynucleotide Phosphorylase from a Cyanobacterium (Synechococcus sp.): Subunit Composition and Properties [PDF]

open access: yes, 1982
Polynucleotide phosphorylase from cells of the cyanobacterium Synechococcus sp. has been purified 1400-fold by an improved procedure. The enzyme purified to homogeneity and lacking nuclease, phosphatase and protease contaminations reveals a single band ...
Nolden, W.-T., Richter, G.
core   +2 more sources

Crystal structure of Caulobacter crescentus polynucleotide phosphorylase reveals a mechanism of RNA substrate channelling and RNA degradosome assembly [PDF]

open access: yesOpen Biology, 2012
Polynucleotide phosphorylase (PNPase) is an exoribonuclease that cleaves single-stranded RNA substrates with 3′–5′ directionality and processive behaviour.
Steven W. Hardwick   +4 more
doaj   +1 more source

Construction of microbial platform for an energy-requiring bioprocess: practical 2′-deoxyribonucleoside production involving a C−C coupling reaction with high energy substrates [PDF]

open access: yes, 2012
BACKGROUND: Reproduction and sustainability are important for future society, and bioprocesses are one technology that can be used to realize these concepts.
Jun Ogawa   +8 more
core   +1 more source

Polyribosome-Dependent Clustering of Membrane-Anchored RNA Degradosomes To Form Sites of mRNA Degradation in Escherichia coli

open access: yesmBio, 2021
Here, we show that RNase E, RhlB, and PNPase act together as components of the multienzyme RNA degradosome in polyribosome-dependent clustering to form puncta on the inner cytoplasmic membrane.
Lina Hamouche   +2 more
doaj   +1 more source

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