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Updated: May 7, 2026

The Green Monster Process for the Generation of Yeast Strains Carrying Multiple Gene Deletions
13:06

The Green Monster Process for the Generation of Yeast Strains Carrying Multiple Gene Deletions

Published on: December 15, 2012

投与感度と酵母菌における遺伝子ファミリーの進化

Balázs Papp1, Csaba Pál, Laurence D Hurst

  • 1Department of Biology and Biochemistry, University of Bath, Bath, Somerset BA2 7AY, UK.

Nature
|July 11, 2003
PubMed
まとめ

タンパク質複合体のサブユニットの不均衡は,バランス仮説を支持し,フィットネスを低下させます. これは,優位性は選択ではなく生理学から生じることを示唆し,大きな遺伝子ファミリーが複合体を避ける理由を説明します.

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Yeast Signaling01:28

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Yeasts are single-celled organisms, but unlike bacteria, they are eukaryotes (cells with a nucleus). Cell signaling in yeast is similar to signaling in other eukaryotic cells. A ligand, such as a protein or a small molecule released from a yeast cell, attaches to a receptor on the cell surface. The binding stimulates second-messenger kinases to activate or inactivate transcription factors that further regulate gene expression. Many of the yeast intracellular signaling cascades have similar...
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Gene Evolution - Fast or Slow?

The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
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Dosage Compensation

In animals, gender is determined by the number and type of sex chromosome. For example, human females have two X chromosomes, and males have one X and one Y chromosome, whereas C.elegans with one X chromosome is a male, and the one with two X chromosomes is a hermaphrodite.
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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.
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The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
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