Claim: CDC6 homolog is a protein (chains of amino acids), it localizes in the cell nucleus during cell cycle and is essential in RNA replication.
Evidence: Cell division control protein 6 homolog is a protein that in humans is encoded by the CDC6 gene. It localizes in the cell nucleus during cell cycle phase G1, but translocates to the cytoplasm at the start of S phase. This protein functions as a regulator at the early steps of DNA replication. Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.