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Mechanisms of Bacterial Transcription Termination.

08:00 EDT 9th April 2019 | BioPortfolio

Summary of "Mechanisms of Bacterial Transcription Termination."

Bacterial transcription termination, described mostly for E. coli, occurs in three recognized ways: intrinsic termination, an activity only of the core RNAP enzyme and transcript sequences that encode an RNA hairpin and terminal uridine-rich segment; termination by the enzyme Rho, an ATP-dependent RNA translocase that releases RNA by forcing uncharacterized structural changes in the elongating complex; and Mfd-dependent termination, the activity of an ATP-dependent DNA translocase that is thought to dissociate the elongation complex by exerting torque on a stalled RNAP. Intrinsic termination can be described in terms of the nucleic acid movements in the process, whereas the enzymatic mechanisms have been illuminated importantly by definitive structural and biochemical analysis of their activity.

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This article was published in the following journal.

Name: Journal of molecular biology
ISSN: 1089-8638
Pages:

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Medical and Biotech [MESH] Definitions

The discontinuation of transcription at the end of a transcription unit, including the recognition of termination sites and release of the newly synthesized RNA molecule.

A protein which effects termination of RNA synthesis during the genetic transcription process by dissociating the ternary transcription complex RNA;-RNA POLYMERASE DNA at the termination of a gene.

Endogenous substances, usually proteins, which are effective in the initiation, stimulation, or termination of the genetic transcription process.

A process of GENETIC TRANSLATION whereby the last amino acid is added to a lengthening polypeptide. This termination is signaled from the MESSENGER RNA, by one of three termination codons (CODON, TERMINATOR) that immediately follows the last amino acid-specifying CODON.

Genetic loci which direct transcription of ribosomal RNA in bacterial operons. They are designated rrnB, rrnC, rrnD, etc. according to the structural position of the transcription unit in the DNA sequence.

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