The Metazoan Origin Recognition Complex

Front Biosci. 1999 Dec 1;4:D805-15. doi: 10.2741/quintana.


Regulated initiation of DNA replication relies on the firing of initiator proteins that bind specifically to origin DNA. The discovery of the first eukaryotic initiator, the Saccharomyces cerevisiae Origin Recognition Complex (ORC) has allowed us to discern some aspects of how the onset of replication is regulated. However, understanding the specifics of replication in metazoan organisms can only be achieved by directly addressing these questions in animal cells. This review deals with the current state of knowledge on the metazoan Origin Recognition Complex, its composition and regulation in higher eukaryotes, its role in the initiation of replication and beyond replication, and its possible connection with human pathology.

Publication types

  • Research Support, U.S. Gov't, P.H.S.
  • Review

MeSH terms

  • Animals
  • Cell Cycle Proteins / metabolism
  • Chromatin / metabolism
  • DNA Replication*
  • DNA-Binding Proteins / metabolism
  • DNA-Binding Proteins / physiology*
  • Eukaryotic Cells / physiology*
  • Gene Expression Regulation
  • Humans
  • Origin Recognition Complex
  • Replication Origin
  • Saccharomyces cerevisiae / genetics
  • Saccharomyces cerevisiae Proteins*


  • CDC6 protein, S cerevisiae
  • Cell Cycle Proteins
  • Chromatin
  • DNA-Binding Proteins
  • Origin Recognition Complex
  • Saccharomyces cerevisiae Proteins