The structure of Rph, an exoribonuclease from Bacillus anthracis, at 1.7 angstrom resolution [PDF]
, 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
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BMC Microbiology, 2017 Background Polynucleotide phosphorylase (PNPase, encoded by pnp) is generally thought of as an enzyme dedicated to RNA metabolism. The pleiotropic effects of PNPase deficiency is imputed to altered processing and turnover of mRNAs and small RNAs, which ...
Thomas Carzaniga +3 more
doaj +1 more source
Ring around the Ro-sie: RNA-Mediated Alterations of PNPase Activity [PDF]
Cell, 2013 Chen et al. demonstrate a new way by which noncoding RNAs tailor the function of multicomponent complexes. They show that a noncoding RNA interacts with an exoribonuclease, altering its substrate specificity and enzymatic activity by serving as a ribonucleoprotein scaffold and, perhaps, a gate for entry of the RNA substrate.
Geiss, Brian J., Wilusz, Jeffrey
openaire +2 more sources
Polynucleotide Phosphorylase from a Cyanobacterium (Synechococcus sp.): Subunit Composition and Properties [PDF]
, 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.
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Frontiers 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
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The role of ribonucleases in regulating global mRNA levels in the model organism Thermus thermophilus HB8 [PDF]
, 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
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Critical roles for ‘housekeeping’ nucleases in type III CRISPR-Cas immunity
eLife, 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
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Mitochondrial Genome Engineering: The Revolution May Not Be CRISPR-Ized. [PDF]
, 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
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Severo Ochoa and the Biomedical Sciences in Spain under Franco, 1959-1975 [PDF]
, 2000 The influence of Severo Ochoa in the establishment of biochemistry and molecular biology in Spain is the central topic of this essay. From the time he was awarded the Nobel Prize in Physiology or Medicine in 1959, Ochoa's links with Spanish scientists ...
Modigell, Michael +3 more
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Crystal structure of Caulobacter crescentus polynucleotide phosphorylase reveals a mechanism of RNA substrate channelling and RNA degradosome assembly [PDF]
Open 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