相关实验视频

Updated: Jun 19, 2026

Protein-tRNA Agarose Gel Retardation Assays for the Analysis of the N6-threonylcarbamoyladenosine TcdA Function
08:03

Protein-tRNA Agarose Gel Retardation Assays for the Analysis of the N6-threonylcarbamoyladenosine TcdA Function

Published on: June 21, 2017

一个功能要求,用于修改T4抑制器tRNA的反子中的摇摆核酸

D S Colby, P Schedl, C Guthrie

    Cell
    |November 1, 1976
    PubMed
    概括

    一种细菌突变通过阻止必要的转移RNA (tRNA) 修改来限制菌体T4的生长. 这影响了色抑制器tRNA功能,突出了tRNA修饰对基因表达和菌体与宿主相互作用的重要性.

    更多相关视频

    An In Vitro Assay to Detect tRNA-Isopentenyl Transferase Activity07:46

    An In Vitro Assay to Detect tRNA-Isopentenyl Transferase Activity

    Published on: October 8, 2018

    DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation09:26

    DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation

    Published on: December 29, 2021

    相关概念视频

    RNA Structure01:23

    RNA Structure

    Overview
    The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
    Different Types of RNA Have the Same Basic Structure
    There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
    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...
    tRNA Activation02:26

    tRNA Activation

    Aminoacyl-tRNA synthetases are present in both eukaryotes and bacteria. Though eukaryotes have 20 different aminoacyl-tRNA synthetases to couple to 20 amino acids, many bacteria do not have genes for all of these aminoacyl-tRNA synthetases. Despite this, they still use all 20 amino acids to synthesize their proteins. For instance, some bacteria do not have the gene encoding the enzyme that couples glutamine with its partner tRNA. In these organisms, one enzyme adds glutamic acid to all of the...
    RNA Structure01:19

    RNA Structure

    The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
    Different Types of RNA Have the Same Basic Structure
    There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
    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...
    tRNA Activation02:26

    tRNA Activation

    Aminoacyl-tRNA synthetases are present in both eukaryotes and bacteria. Though eukaryotes have 20 different aminoacyl-tRNA synthetases to couple to 20 amino acids, many bacteria do not have genes for all of these aminoacyl-tRNA synthetases. Despite this, they still use all 20 amino acids to synthesize their proteins. For instance, some bacteria do not have the gene encoding the enzyme that couples glutamine with its partner tRNA. In these organisms, one enzyme adds glutamic acid to all of the...