The eukaryotic pre-replication complex is assembled at replication origins in a reaction called licensing. Licensing involves the interactions of a variety of proteins including the origin recognition complex (ORC), Cdc6 and the Mcm2-7 helicase, homologues of which are also found in archaea. The euryarchaeote Archaeoglobus fulgidus encodes two genes with homology to Orc/Cdc6 and a single Mcm homologue. The A.fulgidus Mcm protein and one Orc/Cdc6 homologue have been purified and investigated in vitro. The Mcm protein is an ATP-dependent, hexameric helicase that can unwind between 200 and 400 bp of duplex DNA. Deletion of 112 amino acids from the N-terminus of A.f Mcm produced a protein, which was still capable of forming a hexamer, was competent in DNA binding and was able to unwind at least 1 kb of duplex DNA. The purified Orc/Cdc6 homologue was also able to bind DNA. Both Mcm and Orc/Cdc6 show a preference for specific DNA structures, namely molecules containing a single stranded bubble that mimics early replication intermediates. Nuclease protection showed that the binding sites for Mcm and Orc/Cdc6 overlap. The Orc/Cdc6 protein bound more tightly to these substrates and was able to displace pre-bound Mcm hexamer.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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