5MQI

Crystal structure of the N-terminal domain of human Timeless

• PDB DOI: https://doi.org/10.2210/pdb5MQI/pdb

• Classification: REPLICATION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2016-12-20 Released: 2017-03-08 
• Deposition Author(s): Holzer, S., Kilkenny, M.L., Pellegrini, L.
• Funding Organization(s): Wellcome Trust

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.197 
• R-Value Work: 0.170 
• R-Value Observed: 0.172 

Literature

Crystal structure of the N-terminal domain of human Timeless and its interaction with Tipin.

Holzer, S., Degliesposti, G., Kilkenny, M.L., Maslen, S.L., Matak-Vinkovic, D., Skehel, M., Pellegrini, L.

(2017) Nucleic Acids Res 45: 5555-5563

• PubMed: 28334766 
• DOI: https://doi.org/10.1093/nar/gkx139
• Primary Citation of Related Structures:  
  5MQI


• PubMed Abstract: 
  

  Human Timeless is involved in replication fork stabilization, S-phase checkpoint activation and establishment of sister chromatid cohesion. In the cell, Timeless forms a constitutive heterodimeric complex with Tipin. Here we present the 1.85 Å crystal structure of a large N-terminal segment of human Timeless, spanning amino acids 1-463, and we show that this region of human Timeless harbours a partial binding site for Tipin. Furthermore, we identify minimal regions of the two proteins that are required for the formation of a stable Timeless-Tipin complex and provide evidence that the Timeless-Tipin interaction is based on a composite binding interface comprising different domains of Timeless.

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Organizational Affiliation: 

Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, UK.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 44.24 kDa 
• Atom Count: 3,031 
• Modelled Residue Count: 345 
• Deposited Residue Count: 379 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein timeless homolog,Protein timeless homolog	A	379	Homo sapiens	Mutation(s): 0  Gene Names: TIMELESS, TIM, TIM1, TIMELESS1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UNS1 (Homo sapiens) Explore Q9UNS1  Go to UniProtKB:  Q9UNS1
PHAROS:  Q9UNS1 GTEx:  ENSG00000111602

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A], C [auth A], D [auth A], E [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.197 
• R-Value Work: 0.170 
• R-Value Observed: 0.172 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 68.008	α = 90
b = 71.337	β = 90
c = 185.046	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHENIX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2017-03-08 
Deposition Author(s): Holzer, S., Kilkenny, M.L., Pellegrini, L.

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Funding Organization	Location	Grant Number
Wellcome Trust	United Kingdom	104641/Z/14/Z

Revision History  

• Version 1.0: 2017-03-08
  Type: Initial release
  
• Version 1.1: 2017-03-15
  Changes: Database references
• Version 1.2: 2017-04-05
  Changes: Database references
• Version 1.3: 2017-05-31
  Changes: Database references