ISDA: 4NKB

Deposition Date 2013-11-12

Release Date 2014-08-27

Last Version Date 2024-02-28

Entry Detail

PDB ID:

4NKB

Keywords:

TRANSFERASE

Title:

Crystal Structure of the cryptic polo box (CPB)of ZYG-1

Biological Source:

Source Organism(s):

Caenorhabditis elegans (Taxon ID: 6239)

Expression System(s):

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.30 Å

R-Value Free:

0.27

R-Value Work:

0.24

R-Value Observed:

0.24

Space Group:

P 1 2 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Probable serine/threonine-protein kinase zyg-1
Gene (Uniprot):zyg-1
Chain IDs:A, B
Chain Length:230
Number of Molecules:2
Biological Source:Caenorhabditis elegans

UniProt ID:Q9GT24 Pfam ID:PF18531, PF18544

Ligand Molecules

DTT

TRS

Primary Citation

Structure of the C. elegans ZYG-1 Cryptic Polo Box Suggests a Conserved Mechanism for Centriolar Docking of Plk4 Kinases.

Shimanovskaya, E, Viscardi, V, Lesigang, J, Lettman, M.M, Qiao, R, Svergun, D.I, Round, A, Oegema, K, Dong, G.Show

Structure 22 1090 1104 (2014)

PMID: 24980795 DOI: 10.1016/j.str.2014.05.009

Abstact

Plk4 family kinases control centriole assembly. Plk4s target mother centrioles through an interaction between their cryptic polo box (CPB) and acidic regions in the centriolar receptors SPD-2/Cep192 and/or Asterless/Cep152. Here, we report a crystal structure for the CPB of C. elegans ZYG-1, which forms a Z-shaped dimer containing an intermolecular β sheet with an extended basic surface patch. Biochemical and in vivo analysis revealed that electrostatic interactions dock the ZYG-1 CPB basic patch onto the SPD-2-derived acidic region to promote ZYG-1 targeting and new centriole assembly. Analysis of a different crystal form of the Drosophila Plk4 (DmPlk4) CPB suggests that it also forms a Z-shaped dimer. Comparison of the ZYG-1 and DmPlk4 CPBs revealed structural changes in the ZYG-1 CPB that confer selectivity for binding SPD-2 over Asterless-derived acidic regions. Overall, our findings suggest a conserved mechanism for centriolar docking of Plk4 homologs that initiate daughter centriole assembly.

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Primary Citation of related structures

Abstact

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