6GSA image
Entry Detail
PDB ID:
6GSA
EMDB ID:
EMD-0051
Keywords:
DNA BINDING PROTEIN
Title:
Core Centromere Binding Factor 3 (CBF3) with monomeric Ndc10
Biological Source:
Source Organism:
Saccharomyces cerevisiae
Host Organism:
Saccharomyces cerevisiae
PDB Version:
Deposition Date:
2018-06-13
Release Date:
2018-08-01
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
4.20 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
6GSA validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Centromere DNA-binding protein complex CBF3 subunit B
Mutations:Truncation of the N-terminal domain, UNP residues 1-46
Chain IDs:A, B
Chain Length:584
Number of Molecules:2
Biological Source:Saccharomyces cerevisiae
UniProt ID:P40969 Pfam ID:PF16846
Protein Blast
Polymer Type:polypeptide(L)
Description:Suppressor of kinetochore protein 1
Chain IDs:C
Chain Length:197
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P52286 Pfam ID:PF03931, PF01466
Protein Blast
Polymer Type:polypeptide(L)
Description:Centromere DNA-binding protein complex CBF3 subunit C
Chain IDs:D
Chain Length:519
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P35203
Protein Blast
Polymer Type:polypeptide(L)
Description:Centromere DNA-binding protein complex CBF3 subunit A
Mutations:Construct comprising residues 1-554 with C-terminal Strep tag
Chain IDs:E
Chain Length:562
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P32504 Pfam ID:PF21400, PF16787
Ligand Molecules
NA
Primary Citation
Insights into Centromere DNA Bending Revealed by the Cryo-EM Structure of the Core Centromere Binding Factor 3 with Ndc10.
Cell Rep 24 744 754 (2018)
PMID: 30021170 DOI: 10.1016/j.celrep.2018.06.068

Abstact

The centromere binding factor 3 (CBF3) complex binds the third centromere DNA element in organisms with point centromeres, such as S. cerevisiae. It is an essential complex for assembly of the kinetochore in these organisms, as it facilitates genetic centromere specification and allows association of all other kinetochore components. We determined high-resolution structures of the core complex of CBF3 alone and in association with a monomeric construct of Ndc10, using cryoelectron microscopy (cryo-EM). We identify the DNA-binding site of the complex and present a model in which CBF3 induces a tight bend in centromeric DNA, thus facilitating assembly of the centromeric nucleosome.

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Disease

Primary Citation of related structures
6FE8