In molecular biology, RNA polymerase (abbreviated RNAP or RNApol), or more specifically DNA-directed/dependent RNA polymerase (DdRP), is an enzyme that...
41 KB (4,799 words) - 19:34, 17 April 2024
RNA-dependent RNA polymerase (RdRp) or RNA replicase is an enzyme that catalyzes the replication of RNA from an RNA template. Specifically, it catalyzes...
28 KB (3,250 words) - 15:22, 1 April 2024
RNA polymerase II (RNAP II and Pol II) is a multiprotein complex that transcribes DNA into precursors of messenger RNA (mRNA) and most small nuclear RNA...
27 KB (3,100 words) - 17:09, 21 April 2024
T7 RNA Polymerase is an RNA polymerase from the T7 bacteriophage that catalyzes the formation of RNA from DNA in the 5'→ 3' direction. T7 polymerase is...
9 KB (1,030 words) - 13:16, 22 February 2024
cells, RNA polymerase III (also called Pol III) is a protein that transcribes DNA to synthesize 5S ribosomal RNA, tRNA, and other small RNAs. The genes...
11 KB (1,365 words) - 00:30, 4 January 2024
biochemistry, a polymerase is an enzyme (EC 2.7.7.6/7/19/48/49) that synthesizes long chains of polymers or nucleic acids. DNA polymerase and RNA polymerase are used...
7 KB (673 words) - 14:35, 24 October 2023
RNA polymerase 1 (also known as Pol I) is, in higher eukaryotes, the polymerase that only transcribes ribosomal RNA (but not 5S rRNA, which is synthesized...
13 KB (1,695 words) - 01:30, 16 August 2023
Transcription (biology) (redirect from RNA transcription)
transcription, a DNA sequence is read by an RNA polymerase, which produces a complementary, antiparallel RNA strand called a primary transcript. In virology...
58 KB (6,780 words) - 04:35, 23 May 2024
Eukaryotic transcription (section RNA polymerase)
transportable complementary RNA replica. Gene transcription occurs in both eukaryotic and prokaryotic cells. Unlike prokaryotic RNA polymerase that initiates the...
49 KB (5,861 words) - 08:35, 6 December 2023
class of RNA polymerase recruited to the site, and species of organism. Promoters control gene expression in bacteria and eukaryotes. RNA polymerase must...
56 KB (6,472 words) - 17:47, 27 April 2024
protein. mRNA is created during the process of transcription, where an enzyme (RNA polymerase) converts the gene into primary transcript mRNA (also known...
49 KB (5,922 words) - 00:21, 9 May 2024
contrast, RNA polymerases synthesize RNA from ribonucleotides from either RNA or DNA.[citation needed] When synthesizing new DNA, DNA polymerase can add...
59 KB (7,053 words) - 16:38, 28 April 2024
Reverse transcriptase (redirect from RNA-directed DNA polymerase)
information from RNA to DNA are explicitly held possible. Retroviral RT has three sequential biochemical activities: RNA-dependent DNA polymerase activity, ribonuclease...
27 KB (3,043 words) - 01:27, 27 April 2024
RNA polymerase II holoenzyme is a form of eukaryotic RNA polymerase II that is recruited to the promoters of protein-coding genes in living cells. It...
37 KB (4,622 words) - 17:05, 6 April 2024
Terminator (genetics) (section Non-mRNAs)
large protein called a Rho factor which exhibits RNA helicase activity to disrupt the mRNA-DNA-RNA polymerase transcriptional complex. Rho-dependent terminators...
13 KB (1,633 words) - 17:55, 6 January 2024
synthesis of pre-RNA. This requires the presence of all three RNA polymerases. In fact, the transcription of pre-RNA by RNA polymerase I accounts for about...
60 KB (7,195 words) - 11:54, 17 May 2024
transcription by triggering RNA polymerase to release from the promoter and proceed along the DNA. At times, RNA polymerase can pause shortly after leaving...
17 KB (1,959 words) - 02:34, 31 December 2023
complex positions RNA polymerase II (Pol II) at gene transcription start sites, denatures the DNA, and positions the DNA in the RNA polymerase II active site...
11 KB (1,210 words) - 12:30, 16 November 2023
Transcription bubble (section RNA polymerase)
from 12 to 14 base pairs. A transcription bubble is formed when the RNA polymerase enzyme binds to a promoter and causes two DNA strands to detach. It...
7 KB (842 words) - 21:36, 21 May 2024
Bacterial transcription (section RNA polymerase)
copied into a newly synthesized strand of messenger RNA (mRNA) with use of the enzyme RNA polymerase. The process occurs in three main steps: initiation...
21 KB (2,370 words) - 11:41, 10 December 2023
RNA viruses encoding an RNA-directed RNA polymerase are believed to form a monophyletic group, known as the realm Riboviria. The majority of such RNA...
36 KB (3,853 words) - 21:55, 22 February 2024
Primary transcript (redirect from Heterogeneous nuclear RNA)
three distinct RNA polymerases, whereas, in prokaryotes, only one RNA polymerase exists to create all kinds of RNA molecules. RNA polymerase II of eukaryotes...
23 KB (3,023 words) - 12:36, 22 February 2024
plastid-encoded polymerase (PEP). The sigma factor, together with RNA polymerase, is known as the RNA polymerase holoenzyme. Every molecule of RNA polymerase holoenzyme...
20 KB (2,042 words) - 04:48, 6 January 2024
general transcription factor that is involved in the formation of the RNA polymerase II preinitiation complex (PIC) and aids in stimulating transcription...
18 KB (2,447 words) - 11:29, 13 April 2024
messenger RNA (mRNA). This conversion is carried out by enzymes, known as RNA polymerases, in the nucleus of the cell. In eukaryotes, this mRNA is initially...
40 KB (4,342 words) - 18:58, 2 April 2024
cellular mRNA. All positive-strand RNA virus genomes encode RNA-dependent RNA polymerase, a viral protein that synthesizes RNA from an RNA template. Host...
16 KB (1,674 words) - 22:56, 21 January 2024
composed of the genomic RNA, nucleocapsid proteins, phosphoproteins and polymerase proteins. The genome is nonsegmented, negative-sense RNA, 15–19 kilobases...
17 KB (2,027 words) - 22:44, 3 December 2023
that use a homologous RNA-dependent polymerase for replication. It includes RNA viruses that encode an RNA-dependent RNA polymerase, as well as reverse-transcribing...
30 KB (3,483 words) - 03:44, 12 May 2024
in the replication of DNA and is a type of RNA polymerase. Primase catalyzes the synthesis of a short RNA (or DNA in some living organisms) segment called...
20 KB (2,371 words) - 01:01, 11 April 2024
genetic transcription in which RNA polymerase binds to a DNA promoter and enters into cycles of synthesis of short mRNA transcripts which are released...
7 KB (862 words) - 20:27, 11 January 2024