関連する実験動画

Updated: May 9, 2026

Targeted in Situ Mutagenesis of Histone Genes in Budding Yeast
08:48

Targeted in Situ Mutagenesis of Histone Genes in Budding Yeast

Published on: January 26, 2017

ポイント変異は,保存され,イントロンが含まれるTACTAACボックスを,酵母における重要なスプライシング信号配列として識別する

C J Langford, F J Klinz, C Donath

    Cell
    |March 1, 1984
    PubMed
    まとめ

    保存された酵母イントロン配列 (5'-TACTAACA-3') は,RNAスプライシングに不可欠です. この配列を含む合成DNAは,配合できない遺伝子の配合を復元し,その生物学的重要性を確認しました.

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    Mutations01:39

    Mutations

    Overview
    RNA Splicing01:32

    RNA Splicing

    Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
    RNA Splicing01:32

    RNA Splicing

    Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
    Alternative RNA Splicing02:18

    Alternative RNA Splicing

    Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
    There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
    Signal Sequences and Sorting Receptors01:41

    Signal Sequences and Sorting Receptors

    Signal sequences are short amino acid sequences that guide newly synthesized proteins to their proper location within the cell. Classical signal sequences are fifteen to sixty amino acids long and present at the N-terminus of a polypeptide chain. Each signal sequence has a conserved segment of basic residues towards their N terminus, a hydrophobic core, and a C-terminus rich in polar residues. The C-terminus also contains a signal cleavage site and features a -3 -1 sequence motif. The -3-1...
    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...