関連する実験動画

Updated: Jul 5, 2026

Study of the DNA Damage Checkpoint using Xenopus Egg Extracts
10:55

Study of the DNA Damage Checkpoint using Xenopus Egg Extracts

Published on: November 5, 2012

ゼノプス (Xenopus) のモスタンパク質によるメイオチス開始

N Yew1, M L Mellini, G F Vande Woude

  • 1ABL-Basic Research Program, NCI-Frederick Cancer Research and Development Center, Maryland 21702-1201.

Nature
|February 13, 1992
PubMed
まとめ

プロゲステロンは,モスタンパク質合成によるXenopus卵細胞の成熟を誘発する. リコンビネントモスタンパク質だけで成熟を開始するが,完成には追加のタンパク質合成が必要であり,早期半減期におけるモスの役割を強調する.

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Meiosis is a carefully orchestrated set of cell divisions, the goal of which—in humans—is to produce haploid sperm or eggs, each containing half the number of chromosomes present in somatic cells elsewhere in the body. Meiosis I is the first such division, and involves several key steps, among them: condensation of replicated chromosomes in diploid cells; the pairing of homologous chromosomes and their exchange of information; and finally, the separation of homologous chromosomes by a...
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In order to...
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X-Inactivation

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Inheritance of Chromatin Structures03:17

Inheritance of Chromatin Structures

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X-inactivation01:58

X-inactivation

The human X chromosome contains over ten times the number of genes as in the Y chromosome. Since males have only one X chromosome, and females have two, one might expect females to produce twice as many of the proteins, with undesirable results.
Meiosis I03:09

Meiosis I

Meiosis is the division of a diploid cell into haploid cells forming sperm and eggs in animals through differentiation. Meiosis I is the first stage of meiosis, where the genetic recombination of homologous chromosomes and the reduction of the ploidy level by half occurs.
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...