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Results 1 - 10 of 43 > >>
EC Number
Natural Substrates
Commentary (Nat. Sub.)
ATP + RNAn
-
CTP + RNAn
-
GTP + RNAn
-
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bacterial anti-sigma factors typically regulate sigma factor function by restricting the access of their cognate sigma-factors to the RNA polymerase RNAP core enzyme, regulation of RNAP holoenzyme, Esigma70, involving Rsd and the Rsd orthologue AlgQ, a global regulator of gene expression in Pseudomonas aeruginosa, which simultaneously interact with conserved region 2 and region 4 of sigma70 mediated by separate surfaces of Rsd, interaction with mutants of Rsd and AlgQ, mechanism, detailed overview. Rsd can strongly regulate the production of the Pseudomonas aeruginosa virulence factor pyocyanin in a manner that depends on their abilities to interact with sigma70 region 2
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molecular mechanisms enabling sigma factor PvdS, directing the transcription of pyoverdine and virulence genes under iron limitation, to compete with the major sigma RpoD for RNA polymerase binding, overview
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RNAP II participates in the generation of mRNAs and most of the small nuclear RNAs, while RNAP III synthesizes small essential RNAs, such as tRNAs, 5S rRNA and some snRNAs
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intermittent hypoxia, a major pathological factor in the development of neural deficits associated with sleep-disordered breathing, regulates RNA polymerase II in hippocampus and prefrontal cortex. Chronic intermittent hypoxia, but not sustained hypoxia, stimulates hydroxylation of Pro1465 in large subunit of RNA polymerase II and phosphorylation of Ser5 of Rpb1, specifically in the CA1 region of the hippocampus and in the prefrontal cortex but not in other regions of the brain, requiring the von Hippel-Lindau tumor suppressor. Mice exposed to chronic IH demonstrated cognitive deficits related to dysfunction in those brain regions, overview
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molecular mechanisms of transcription regulation in mitochondria, molecular organization of the human mitochondrial transcription initiation complex, overview
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multi-subunit DNA-dependent RNA polymerases synthesize RNA molecules thousands of nucleotides long. The reiterative reaction of nucleotide condensation occurs at rates of tens of nucleotides per second, invariably linked to the translocation of the enzyme along the DNA template, or threading of the DNA and the nascent RNA molecule through the enzyme. Reiteration of the nucleotide addition/translocation cycle without dissociation from the DNA and RNA requires both isomorphic and metamorphic conformational flexibility of a magnitude substantial enough to accommodate the requisite molecular motions
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multisubunit RNA polymerase transcribes DNA, but is also known to synthesize DNA replication primers in the replication system, a function that is commonly performed by primases, mechanism of primer synthesis by RNA polymerase and comparison to the mechanism of both types of primases, overview
Results 1 - 10 of 43 > >>