Results 61 to 70 of about 43,981 (239)

Prophage excision switches the primary ribosome rescue pathway and rescue‐associated gene regulations in Escherichia coli

open access: yesMolecular Microbiology, Volume 119, Issue 1, Page 44-58, January 2023., 2023
In this study, we found that excision of Escherichia coli CP4‐57 prophage inactivates trans‐translation and activates the ArfA/RF2 rescue pathway back to back. This “rescue‐switching” rearranges the intercellular proteome landscape and E. coli phenotype in a rescue‐associated proteolysis‐dependent manner.
Haruka Onodera   +3 more
wiley   +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

Polynucleotide phosphorylase exonuclease and polymerase activities on single-stranded DNA ends are modulated by RecN, SsbA and RecA proteins [PDF]

open access: gold, 2011
Bacillus subtilis pnpA gene product, polynucleotide phosphorylase (PNPase), is involved in double-strand break (DSB) repair via homologous recombination (HR) or non-homologous end-joining (NHEJ).
Paula P. Cárdenas   +6 more
openalex   +5 more sources

Different csrA Expression Levels in C versus K-12 E. coli Strains Affect Biofilm Formation and Impact the Regulatory Mechanism Presided by the CsrB and CsrC Small RNAs

open access: yesMicroorganisms, 2021
Escherichia coli C is a strong biofilm producer in comparison to E. coli K-12 laboratory strains due to higher expression of the pgaABCD operon encoding the enzymes for the biosynthesis of the extracellular polysaccharide poly-β-1,6-N-acetylglucosamine ...
Thomas Carzaniga   +5 more
doaj   +1 more source

Sequence motifs that distinguish ATP(CTP) : tRNA nucleotidyl transferases from eubacterial poly(A) polymerases [PDF]

open access: yes, 2004
ATP(CTP):tRNA nucleotidyl transferases, tRNA maturing enzymes found in all organisms, and eubacterial poly(A) polymerases, enzymes involved in mRNA degradation, are so similar that until now their biochemical functions could not be distinguished by their
Keller, W., Martin, G.
core   +2 more sources

Lack of PNPase activity in Enterococcus faecalis 14 increases the stability of EntDD14 bacteriocin transcripts

open access: yesScientific Reports, 2023
A mutant deficient in polynucleotide phosphorylase (PNPase) activity was previously constructed in Enterococcus faecalis 14; a strain producing a leaderless two-peptide enterocin DD14 (EntDD14).
Rabia Ladjouzi   +3 more
doaj   +1 more source

Kinetic studies on the phosphorolysis of polynucleotides by polynucleotide phosphorylase

open access: yesJournal of Biological Chemistry, 1975
The kinetics of the phosphorolysis of polynucleotide (as differentiated from oligonucleotide) by polynucleotide phosphorylase of Micrococcus luteus has been investigated. Double reciprocal plots of initial velocity against either inorganic phosphate or polynucleotide concentration are linear, and furthermore, the affinity of the enzyme for either ...
J Y Chou, P McPhie, M F Singer
openaire   +2 more sources

A Blue Native-PAGE analysis of membrane protein complexes in Clostridium thermocellum [PDF]

open access: yes, 2011
Background Clostridium thermocellum is a Gram-positive thermophilic anaerobic bacterium with the unusual capacity to convert cellulosic biomass into ethanol and hydrogen. Identification and characterization of protein complexes in C.
Fan, Keqiang   +6 more
core   +3 more sources

Supernatants derived from chemotherapy-treated cancer cell lines can modify angiogenesis [PDF]

open access: yes, 2012
BACKGROUND: There is evidence that tumours produce substances such as cytokines and microvesicular bodies bearing bioactive molecules, which support the carcinogenic process.
Bodman-Smith, M   +8 more
core   +1 more source

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