5UJM

Structure of the active form of human Origin Recognition Complex and its ATPase motor module


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 18.0 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of the active form of human Origin Recognition Complex and its ATPase motor module.

Tocilj, A.On, K.F.Yuan, Z.Sun, J.Elkayam, E.Li, H.Stillman, B.Joshua-Tor, L.

(2017) Elife 6

  • DOI: 10.7554/eLife.20818
  • Primary Citation of Related Structures:  
    5UJM, 5UJ7, 5UJ8

  • PubMed Abstract: 
  • Binding of the Origin Recognition Complex (ORC) to origins of replication marks the first step in the initiation of replication of the genome in all eukaryotic cells. Here, we report the structure of the active form of human ORC determined by X-ray crystallography and cryo-electron microscopy ...

    Binding of the Origin Recognition Complex (ORC) to origins of replication marks the first step in the initiation of replication of the genome in all eukaryotic cells. Here, we report the structure of the active form of human ORC determined by X-ray crystallography and cryo-electron microscopy. The complex is composed of an ORC1/4/5 motor module lobe in an organization reminiscent of the DNA polymerase clamp loader complexes. A second lobe contains the ORC2/3 subunits. The complex is organized as a double-layered shallow corkscrew, with the AAA+ and AAA+-like domains forming one layer, and the winged-helix domains (WHDs) forming a top layer. CDC6 fits easily between ORC1 and ORC2, completing the ring and the DNA-binding channel, forming an additional ATP hydrolysis site. Analysis of the ATPase activity of the complex provides a basis for understanding ORC activity as well as molecular defects observed in Meier-Gorlin Syndrome mutations.


    Organizational Affiliation

    Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, United States.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Origin recognition complex subunit 1A522Homo sapiensMutation(s): 0 
Gene Names: ORC1ORC1LPARC1
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Find proteins for Q13415 (Homo sapiens)
Explore Q13415 
Go to UniProtKB:  Q13415
PHAROS:  Q13415
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Origin recognition complex subunit 2B347Homo sapiensMutation(s): 0 
Gene Names: ORC2ORC2L
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Find proteins for Q13416 (Homo sapiens)
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Go to UniProtKB:  Q13416
PHAROS:  Q13416
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Origin recognition complex subunit 3C712Homo sapiensMutation(s): 0 
Gene Names: ORC3LATHEOORC3L
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Find proteins for Q9UBD5 (Homo sapiens)
Explore Q9UBD5 
Go to UniProtKB:  Q9UBD5
PHAROS:  Q9UBD5
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Origin recognition complex subunit 4D436Homo sapiensMutation(s): 0 
Gene Names: ORC4ORC4L
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Find proteins for O43929 (Homo sapiens)
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PHAROS:  O43929
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Origin recognition complex subunit 5E435Homo sapiensMutation(s): 0 
Gene Names: ORC5ORC5L
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Find proteins for O43913 (Homo sapiens)
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PHAROS:  O43913
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP (Subject of Investigation/LOI)
Query on ATP

Download Ideal Coordinates CCD File 
F [auth A], H [auth D], J [auth E]ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
G [auth A], I [auth D]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 18.0 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-02-08
    Type: Initial release
  • Version 1.1: 2018-07-18
    Changes: Data collection