DnaC helicase loader

DnaC helicase loader (DnaC) transfers helicase to replication origins. The helicase loaders belong to two classes. The ‘ring breakers’ break the hexameric helicase to allow the DNA to pass through. The ‘ring makers’ assemble the helicase monomers to .^[1]

For the theoretical model structure of E. coli DnaC see Structure of E. coli DnaC helicase loader.

3D Structures of DnaC helicase loader3D Structures of DnaC helicase loader

Updated on 06-July-2021

3ec2 – AaDnaC – Aquifex aeolicus
3ecc – AaDnaC + ADP-BeF3
2vye – GkDnaC + DNA – Geobacillus kaustophilus
2vyf – GkDnaC
6qel – EcDnaC + BnaB + ADP – Escherichia coli – Cryo EM
6kza – EcDnaC N-terminal 1-56 + BnaB C-terminal 180-471
6qem – EcDnaC + BnaB + DNA + ADP – Cryo EM

ReferencesReferences

↑ Arias-Palomo E, O'Shea VL, Hood IV, Berger JM. The bacterial DnaC helicase loader is a DnaB ring breaker. Cell. 2013 Apr 11;153(2):438-48. doi: 10.1016/j.cell.2013.03.006. Epub 2013 Apr, 4. PMID:23562643 doi:http://dx.doi.org/10.1016/j.cell.2013.03.006

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Michal Harel, Eric Martz, Alexander Berchansky

[1] Arias-Palomo E, O'Shea VL, Hood IV, Berger JM. The bacterial DnaC helicase loader is a DnaB ring breaker. Cell. 2013 Apr 11;153(2):438-48. doi: 10.1016/j.cell.2013.03.006. Epub 2013 Apr, 4. PMID:23562643 doi:http://dx.doi.org/10.1016/j.cell.2013.03.006

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