V2EX g1 phase

G1 Phase

Definition / 释义

G1期(第一间隙期):细胞周期中有丝分裂(M期)结束后、DNA复制(S期)开始前的阶段。细胞在此期通常会生长、合成蛋白质和细胞器,并在关键的G1检查点评估营养、能量、DNA损伤与外界信号,决定是否进入S期继续分裂(或进入静止的G0期)。

Pronunciation / 发音

/di wn fez/

Examples / 例句

The cells are in G1 phase and growing rapidly.
这些细胞处于G1期,正在快速生长。

If DNA damage is detected in G1 phase, the cell may pause the cycle to repair it before entering S phase.
如果在G1期检测到DNA损伤,细胞可能会暂停周期进行修复,然后再进入S期。

Etymology / 词源

G1 phase来自细胞周期的阶段命名:GGap(间隙) 的缩写,表示两个关键事件之间的“间隔”;1 表示第一个间隙阶段(相对于后面的G2期)。该术语随着20世纪细胞生物学对细胞周期分期的建立而被广泛使用。

Related Words / 相关词

Literary Works / 文学作品

  • Molecular Biology of the Cell(Alberts等,《细胞的分子生物学》):在细胞周期章节中系统讲解G1期与检查点调控。
  • The Cell: A Molecular Approach(Cooper & Hausman,《细胞:分子方法》):介绍G1期、G0期与细胞增殖信号。
  • Campbell Biology(《坎贝尔生物学》):在细胞分裂与细胞周期部分解释G1、S、G2、M各期及其意义。
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