Cdc54 belongs to the Cdc46/Mcm3 family of proteins which are essential for initiation of eukaryotic DNA replication.
CDC54 is a gene essential for initiation of DNA replication in Saccharomyces cerevisiae, and which is known to genetically interact with other regulators of the S-phase, including CDC46. We describe the isolation and sequencing of CDC54 and show that it encodes a protein structurally related to Cdc46p, Mcm2p and Mcm3p by the presence of a conserved domain of 145 amino acids which is internal to each polypeptide. This conserved domain resembles the DEAD box of RNA helicases and is similar to the conserved domain associated with a group of transcription and replication factors with known or assumed DNA-dependent ATPase activity, suggesting it may be involved in nucleic-acid recognition. Comparison of Cdc54p to related proteins from other species revealed that it closely resembles cdc21p from Schizosaccharomyces pombe.[1]References
- Cdc54 belongs to the Cdc46/Mcm3 family of proteins which are essential for initiation of eukaryotic DNA replication. Whitebread, L.A., Dalton, S. Gene (1995) [Pubmed]
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