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Deposition Date 2013-09-05
Release Date 2014-08-20
Last Version Date 2024-03-20
Entry Detail
PDB ID:
3WI3
Keywords:
REPLICATION REGULATOR
Title:
Crystal Structure of the Sld3/Treslin domain from yeast Sld3
Biological Source:
Source Organism:
Saccharomyces cerevisiae (Taxon ID: 559292)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.40 Å
R-Value Free:
0.26
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
P 21 21 21
3WI3 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DNA replication regulator SLD3
Gene (Uniprot):SLD3
Chain IDs:A, B, C
Chain Length:292
Number of Molecules:3
Biological Source:Saccharomyces cerevisiae
UniProt ID:P53135 Pfam ID:PF08639
Ligand Molecules
EDO
SO4
Primary Citation
Crystal structure of the homology domain of the eukaryotic DNA replication proteins sld3/treslin.
Structure 22 1341 1347 (2014)
PMID: 25126958 DOI: 10.1016/j.str.2014.07.001

Abstact

The initiation of eukaryotic chromosomal DNA replication requires the formation of an active replicative helicase at the replication origins of chromosomal DNA. Yeast Sld3 and its metazoan counterpart Treslin are the hub proteins mediating protein associations critical for the helicase formation. Here, we show the crystal structure of the central domain of Sld3 that is conserved in Sld3/Treslin family of proteins. The domain consists of two segments with 12 helices and is sufficient to bind to Cdc45, the essential helicase component. The structure model of the Sld3-Cdc45 complex, which is crucial for the formation of the active helicase, is proposed.

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Primary Citation of related structures
3WI3