5UJ8

Human Origin Recognition Complex subunits 2 and 3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 6.00 Å
  • R-Value Free: 0.368 
  • R-Value Work: 0.318 
  • R-Value Observed: 0.321 

wwPDB Validation   3D Report Full Report


This is version 1.0 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
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Origin recognition complex subunit 3A, B, C, D712Homo sapiensMutation(s): 0 
Gene Names: ORC3LATHEOORC3L
Find proteins for Q9UBD5 (Homo sapiens)
Explore Q9UBD5 
Go to UniProtKB:  Q9UBD5
NIH Common Fund Data Resources
PHAROS:  Q9UBD5
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Origin recognition complex subunit 2E, F, G, H347Homo sapiensMutation(s): 0 
Gene Names: ORC2ORC2L
Find proteins for Q13416 (Homo sapiens)
Explore Q13416 
Go to UniProtKB:  Q13416
NIH Common Fund Data Resources
PHAROS:  Q13416
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 6.00 Å
  • R-Value Free: 0.368 
  • R-Value Work: 0.318 
  • R-Value Observed: 0.321 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.26α = 90
b = 114.961β = 90.72
c = 316.455γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-02-08
    Type: Initial release