関連する実験動画

Updated: Jul 8, 2026

An Engineered Split-TET2 Enzyme for Chemical-inducible DNA Hydroxymethylation and Epigenetic Remodeling
08:34

An Engineered Split-TET2 Enzyme for Chemical-inducible DNA Hydroxymethylation and Epigenetic Remodeling

Published on: December 18, 2017

人間のカテキル-O-メチルトランスフェラーゼハプロタイプは,mRNA二次構造を変更することによってタンパク質発現を調節する

A G Nackley1, S A Shabalina, I E Tchivileva

  • 1Center for Neurosensory Disorders, University of North Carolina, Chapel Hill, NC 27599, USA.

Science (New York, N.Y.)
|December 23, 2006
PubMed
まとめ

Catechol-O-methyltransferase (COMT) 遺伝子の同名の変異は,タンパク質のレベルと活性に影響を与え,痛みに対する感受性に影響を与えます. 単一のSNPではなくハプロタイプが,COMT遺伝子の機能を理解するために重要である.

さらに関連する動画

Antibody-Free Assay for RNA Methyltransferase Activity Analysis08:31

Antibody-Free Assay for RNA Methyltransferase Activity Analysis

Published on: July 9, 2019

Characterizing RNA Modifications in Single Neurons Using Mass Spectrometry08:45

Characterizing RNA Modifications in Single Neurons Using Mass Spectrometry

Published on: April 21, 2022

関連する概念動画

Mutations01:39

Mutations

Overview
Transfer RNA Synthesis02:36

Transfer RNA Synthesis

One of the unique features of tRNA is the presence of modified bases. In some tRNAs, modified bases account for nearly 20% of the total bases in the molecule. Altogether, these unusual bases protect the tRNA from enzymatic degradation by RNases.
Each of these chemical modifications is carried by a specific enzyme, post-transcription. All of these enzymes have unique base and site-specificity. Methylation, the most common chemical modification, is carried by at least nine different enzymes, with...
RNA Editing02:23

RNA Editing

RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
Mutations01:35

Mutations

Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
What is Gene Expression?01:36

What is Gene Expression?

A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised  of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then processed and...
Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...