FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term primosome complex ID (Ontology) GO:1990077 (Gene Ontology)
Definition Any of a family of protein complexes that form at the origin of replication or stalled replication forks and function in replication primer synthesis in all organisms. Early complexes initiate double-stranded DNA unwinding. The core unit consists of a replicative helicase and a primase. The helicase further unwinds the DNA and recruits the polymerase machinery. The primase synthesizes RNA primers that act as templates for complementary stand replication by the polymerase machinery. The primosome contains a number of associated proteins and protein complexes and contributes to the processes of replication initiation, lagging strand elongation, and replication restart.[ PubMed:21856207 ]
Also Known As "primosome"
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replication fork
 |__replisome_______________
protein-containing complex  |
 |__protein-DNA complex_____|
protein-DNA complex         |
 |__replisome_______________|
                            primosome complex
                             |__core primosome complex
                             |   |__DnaB-DnaG complex
                             |__DnaA-DiaA complex
                             |__DnaA-HU complex
                             |__DnaA-oriC complex
                             |__DnaB-DnaC complex
                             |__pre-primosome complex
                                 |__DnaA-DnaB-DnaC complex
                                 |__DnaB-DnaC-DnaT-PriA-PriB complex
                                 |__DnaB-DnaC-DnaT-PriA-PriC complex
                                 |__DnaB-DnaC-Rep-PriC complex
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Is a protein-DNA complex
Part of replisome
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Synonyms
  • "primosome" EXACT
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