|PROSITE documentation PDOC00662 [for PROSITE entry PS50051]|
Proteins shown to be required for the initiation of eukaryotic DNA replication share a highly conserved domain of about 210 amino-acid residues [1,2,3]. The latter shows some similarities  with that of various other families of DNA-dependent ATPases. Eukaryotes seem to possess a family of six proteins that contain this domain. They were first identified in yeast where most of them have a direct role in the initiation of chromosomal DNA replication by interacting directly with autonomously replicating sequences (ARS). They were thus called 'minichromosome maintenance proteins' with gene symbols prefixed by MCM. These six proteins are:
This family is also present in archebacteria. In Methanococcus jannaschii there are four members: MJ0363, MJ0961, MJ1489 and MJECL13.
The presence of a putative ATP-binding domain implies that these proteins may be involved in an ATP-consuming step in the initiation of DNA replication in eukaryotes.
As a signature pattern, we selected a perfectly conserved region that represents a special version of the B motif found in ATP-binding proteins.Expert(s) to contact by email:
November 1997 / Pattern and text revised; profile added.
PROSITE methods (with tools and information) covered by this documentation:
|1||Authors||Coxon A. Maundrell K. Kearsey S.E.|
|Title||Fission yeast cdc21+ belongs to a family of proteins involved in an early step of chromosome replication.|
|Source||Nucleic Acids Res. 20:5571-5577(1992).|
|2||Authors||Hu B. Burkhart R. Schulte D. Musahl C. Knippers R.|
|Title||The P1 family: a new class of nuclear mammalian proteins related to the yeast Mcm replication proteins.|
|Source||Nucleic Acids Res. 21:5289-5293(1993).|
|Title||The MCM2-3-5 proteins: are they replication licensing factors?|
|Source||Trends Cell Biol. 4:160-166(1994).|
|Title||A common set of conserved motifs in a vast variety of putative nucleic acid-dependent ATPases including MCM proteins involved in the initiation of eukaryotic DNA replication.|
|Source||Nucleic Acids Res. 21:2541-2547(1993).|