G1 Phase Cell Cycle Checkpoints (definition)

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ψ ψ	G1 Phase Cell Cycle Checkpoints

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Definition: Regulatory signaling systems that control the progression of the CELL CYCLE through the G1 PHASE and allow transition to S PHASE when the cells are ready to undergo DNA REPLICATION. DNA DAMAGE, or the deficiencies in specific cellular components or nutrients may cause the cells to halt before progressing through G1 phase.

Other names Restriction Points, G1; Restriction Point, G1; G1 S Phase Cell Cycle Checkpoint; G1 Restriction Points; G1 Phase Checkpoint; Checkpoints, G1 Phase; Checkpoint, G1 Phase; START Cell Cycle Checkpoint; G1-S Phase Cell Cycle Checkpoint; G1 Restriction Point; G1 Phase Restriction Point; G1 Phase Checkpoints; G1 Cell Cycle Checkpoints; G1 Cell Cycle Arrest

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Sources: NLM Medical Subject Headings, NIH UMLS, Drugs@FDA, FDA AERS original data copyright United States Government. No endorsement implied. Last modified 6/6/2012
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