5UJ7

Structure of the active form of human Origin Recognition Complex ATPase motor module, complex subunitS 1, 4, 5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.394 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.242 

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:  5UJ8, 5UJM

  • 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 c ...

    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

    W. M. Keck Structural Biology Laboratory, Cold Spring Harbor, New York, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Origin recognition complex subunit 1
A, B
391Homo sapiensGene Names: ORC1 (ORC1L, PARC1)
Find proteins for Q13415 (Homo sapiens)
Go to Gene View: ORC1
Go to UniProtKB:  Q13415
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Origin recognition complex subunit 4
C, D
436Homo sapiensGene Names: ORC4 (ORC4L)
Find proteins for O43929 (Homo sapiens)
Go to Gene View: ORC4
Go to UniProtKB:  O43929
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Origin recognition complex subunit 5
E, F
284Homo sapiensGene Names: ORC5 (ORC5L)
Find proteins for O43913 (Homo sapiens)
Go to Gene View: ORC5
Go to UniProtKB:  O43913
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

Download SDF File 
Download CCD File 
E, F
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
ATP
Query on ATP

Download SDF File 
Download CCD File 
A, B, C, D, E, F
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C, D
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.394 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.242 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 120.887α = 90.00
b = 81.141β = 97.25
c = 151.947γ = 90.00
Software Package:
Software NamePurpose
Aimlessdata scaling
XDSdata reduction
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
Howard Hughes Medical InstituteUnited States--

Revision History 

  • Version 1.0: 2017-02-08
    Type: Initial release
  • Version 1.1: 2017-09-20
    Type: Author supporting evidence, Derived calculations