6XWX | pdb_00006xwx

Experimental Data Snapshot

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

This is version 1.3 of the entry. See complete history.

(2020) Nucleic Acids Res 48: 6996-7004

PubMed Abstract:
The Tof1-Csm3 fork protection complex has a central role in the replisome-it promotes the progression of DNA replication forks and protects them when they stall, while also enabling cohesion establishment and checkpoint responses. Here, I present the crystal structure of the Tof1-Csm3 complex from Chaetomium thermophilum at 3.1 Å resolution. The structure reveals that both proteins together form an extended alpha helical repeat structure, which suggests a mechanical or scaffolding role for the complex. Expanding on this idea, I characterize a DNA interacting region and a cancer-associated Mrc1 binding site. This study provides the molecular basis for understanding the functions of the Tof1-Csm3 complex, its human orthologue the Timeless-Tipin complex and additionally the Drosophila circadian rhythm protein Timeless.

Organizational Affiliation

Rudolf Virchow Center for Experimental Biomedicine, Institute for Structural Biology, University of Würzburg, Josef-Schneider-Str. 2, Würzburg, Germany.

Macromolecule Content

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Uncharacterized protein,Uncharacterized protein	A, C, E	599	Thermochaetoides thermophila DSM 1495	Mutation(s): 0 Gene Names: CTHT_0029130
UniProt
Find proteins for G0S825 (Chaetomium thermophilum (strain DSM 1495 / CBS 144.50 / IMI 039719)) Explore G0S825 Go to UniProtKB: G0S825
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	G0S825
Sequence Annotations Expand
Reference Sequence

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| 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Chromosome segregation in meiosis protein	B, D, F	111	Thermochaetoides thermophila DSM 1495	Mutation(s): 0 Gene Names: CTHT_0011090
UniProt
Find proteins for G0S0S7 (Chaetomium thermophilum (strain DSM 1495 / CBS 144.50 / IMI 039719)) Explore G0S0S7 Go to UniProtKB: G0S0S7
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	G0S0S7
Sequence Annotations Expand
Reference Sequence

Space Group: C 1 2 1

Unit Cell:

Software Package:

& Funding Information

Deposition Author(s):

Grabarczyk, D.B.

Funding Organization	Location	Grant Number
German Research Foundation (DFG)	Germany	GR5152/3-1

Version 1.0: 2020-05-27
Type: Initial release
Version 1.1: 2020-06-10
Changes: Database references
Version 1.2: 2020-07-15
Changes: Database references
Version 1.3: 2024-01-24
Changes: Data collection, Database references, Refinement description