G1/S checkpoint Archives - Laboratory Notes https://www.laboratorynotes.com/tag/g1-s-checkpoint/ Tue, 18 Aug 2026 21:02:41 +0000 en hourly 1 https://wordpress.org/?v=7.0.3 Cell Cycle Checkpoint https://www.laboratorynotes.com/cell-cycle-checkpoint/ https://www.laboratorynotes.com/cell-cycle-checkpoint/#respond Tue, 18 Aug 2026 20:51:53 +0000 https://www.laboratorynotes.com/?p=29636 Cell‑cycle checkpoints act as surveillance systems that monitor DNA integrity, replication completeness and spindle attachment. The G1, G2 and spindle checkpoints prevent cells with damage or misaligned chromosomes from dividing, ensuring accurate genome transmission and protecting against genomic instability and cancer.

The post Cell Cycle Checkpoint appeared first on Laboratory Notes.

]]> https://www.laboratorynotes.com/cell-cycle-checkpoint/feed/ 0 G1/S transition https://www.laboratorynotes.com/g1-s-transition/ https://www.laboratorynotes.com/g1-s-transition/#respond Tue, 18 Aug 2026 18:18:41 +0000 https://www.laboratorynotes.com/?p=29621 The G1/S transition is the critical checkpoint where a cell commits to DNA replication. It integrates cyclin–CDK activity, Rb phosphorylation, and E2F activation to ensure accurate S‑phase entry. Proper regulation protects genomic stability and prevents uncontrolled proliferation.

The post G1/S transition appeared first on Laboratory Notes.

]]> https://www.laboratorynotes.com/g1-s-transition/feed/ 0