相关实验视频

Updated: Jun 22, 2025

Real-Time Quantification of the Effects of IS200/IS605 Family-Associated TnpB on Transposon Activity
04:04

Real-Time Quantification of the Effects of IS200/IS605 Family-Associated TnpB on Transposon Activity

Published on: January 20, 2023

2.3K

在Neritimorpha和其他胃类动物中,非LTR可移植元素的家族

Donald James Colgan1

  • 1Malacology, AMRI, The Australian Museum, 1 William St., Sydney 2010, Australia.

Genes
|June 27, 2024
PubMed
概括

这项研究描述了神经形状牛中非LTR可转移元素 (TE),揭示了多样化的家族,并提供了对它们的进化关系的见解. 这些发现突出了研究尼里蒂科家族 (Neritidae) 内的种类进化的潜力.

关键词:
胃类动物的胃类动物在英格兰,你会发现.骑士骑士是什么意思没有了,没有了,没有了.尼姆巴斯 (Nimbus) 是一个神奇的东西.反向转录酶域是反向转录酶的域.

更多相关视频

A Whole Mount In Situ Hybridization Method for the Gastropod Mollusc Lymnaea stagnalis07:33

A Whole Mount In Situ Hybridization Method for the Gastropod Mollusc Lymnaea stagnalis

Published on: March 15, 2016

8.8K
Author Spotlight: Understanding the Propagation of Closed Circular Extrachromosomal rDNA Containing Element (CERE) in Naegleria gruberi06:55

Author Spotlight: Understanding the Propagation of Closed Circular Extrachromosomal rDNA Containing Element (CERE) in Naegleria gruberi

Published on: June 21, 2024

557

相关概念视频

LTR Retrotransposons03:08

LTR Retrotransposons

LTR retrotransposons are class I transposable elements with long terminal repeats flanking an internal coding region. These elements are less abundant in mammals compared to other class I transposable elements. About 8 percent of human genomic DNA comprises LTR retrotransposons. Some of the common examples of LTR retrotransposons are Ty elements in yeast and Copia elements in Drosophila.
The internal coding region of LTR retrotransposons and their mechanism of transposition closely resembles a...
17.5K
Non-LTR Retrotransposons03:18

Non-LTR Retrotransposons

As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
11.5K
Overview of Transposition and Recombination02:13

Overview of Transposition and Recombination

Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
15.4K
DNA-only Transposons02:57

DNA-only Transposons

DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure.
The donor site from where the transposon is excised is either degraded or...
14.4K
Genome Size and the Evolution of New Genes03:21

Genome Size and the Evolution of New Genes

While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
7.9K
piRNA - Piwi-interacting RNAs02:57

piRNA - Piwi-interacting RNAs

PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
6.8K