相关实验视频

Updated: Jun 23, 2025

Nonradioactive Assay to Measure Polynucleotide Phosphorylation of Small Nucleotide Substrates
06:49

Nonradioactive Assay to Measure Polynucleotide Phosphorylation of Small Nucleotide Substrates

Published on: May 8, 2020

4.7K

绿色藻类编码祖先聚合酶IV/聚合酶V子单元和一个CLSY/DRD1同源

Tania Chakraborty1, Joshua T Trujillo2,3, Timmy Kendall1

  • 1The School of Plant Sciences, University of Arizona, Tucson, USA.

Genome biology and evolution
|June 14, 2024
PubMed
概括

绿色藻类具有RNA聚合酶IV和V子单元的单拷贝前体,揭示了RNA指导的DNA甲基化过程的进化起源. 这表明早期的甲基化途径涉及单个专门的聚合酶.

关键词:
在 RNA Pol IV 中.RNA Pol V RNA Pol V. 这是一个很大的问题.通过RNA指导的DNA甲基化.植物性藻类 植物性藻类

更多相关视频

Robust DNA Isolation and High-throughput Sequencing Library Construction for Herbarium Specimens13:03

Robust DNA Isolation and High-throughput Sequencing Library Construction for Herbarium Specimens

Published on: March 8, 2018

10.6K
Author Spotlight: Optimized Transformation Protocol for Chlorella vulgaris Using Agrobacterium tumefaciens08:00

Author Spotlight: Optimized Transformation Protocol for Chlorella vulgaris Using Agrobacterium tumefaciens

Published on: October 27, 2023

3.4K

相关概念视频

Channel Rhodopsins01:11

Channel Rhodopsins

Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
2.6K
Bacterial RNA Polymerase00:43

Bacterial RNA Polymerase

Unlike eukaryotes, bacteria use a single RNA Polymerase (RNAP) to transcribe all genes. The different subunits of bacterial RNAPhave distinct functions. The multisubunit structure of the bacterial RNAP helps the enzyme to maintain catalytic function, facilitate assembly, interact with DNA and RNA, and self-regulate its activity.
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
29.4K
The Anatomy of Chloroplasts01:08

The Anatomy of Chloroplasts

Green algae and plants, including green stems and unripe fruit, harbor specialized organelles called chloroplasts to carry out photosynthesis. They coordinate both stages of photosynthesis — the light-dependent reactions and the light-independent reactions. The light-dependent reactions use sunlight to release oxygen and produce chemical energy in the form of ATP and NADPH, and the light-independent reactions capture CO2 and use ATP and NADPH to produce sugar.
Structure of...
5.1K
Eukaryotic RNA Polymerases00:58

Eukaryotic RNA Polymerases

RNA Polymerase (RNAP) is conserved in all animals, with bacterial, archaeal, and eukaryotic RNAPs sharing significant sequence, structural, and functional similarities. Among the three eukaryotic RNAPs, RNA Polymerase II is most similar to bacterial RNAP in terms of both structural organization and folding topologies of the enzyme subunits. However, these similarities are not reflected in their mechanism of action.
All three eukaryotic RNAPs require specific transcription factors, of which the...
24.1K
Replication in Eukaryotes01:29

Replication in Eukaryotes

In eukaryotic cells, DNA replication is highly conserved and tightly regulated. Multiple linear chromosomes must be duplicated with high fidelity before cell division, so there are many proteins that fulfill specialized roles in the replication process. Replication occurs in three phases: initiation, elongation, and termination, and ends with two complete sets of chromosomes in the nucleus.
Many Proteins Orchestrate Replication at the Origin
Eukaryotic replication follows many of the same...
13.7K
Transcription Initiation01:47

Transcription Initiation

Initiation is the first step of transcription in eukaryotes. Prokaryotic RNA Polymerase (RNAP) can bind to the template DNA and start transcribing. On the other hand, transcription in eukaryotes requires additional proteins, called transcription factors, to first bind to the promoter region in the DNA template. This binding helps recruit the specific RNAP that can assemble on the DNA and start transcription.
The promoters and enhancers and their accessory proteins allow tight regulation of...
16.4K