Cyclin E

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** A protein family that is synthesized during the G1 phase of the cell cycle and drives the G1/S phase transition through the positive regulation of cyclin-dependent kinase 2 activity. There are 2 CCNE genes in humans.

**Synonyms:** - CCNE - Cyclin-E - G1/S-Specific Cyclin-E