4N40

Crystal structure of human Epithelial cell-transforming sequence 2 protein

PDB DOI: https://doi.org/10.2210/pdb4N40/pdb

Classification: CELL CYCLE
Organism(s): Homo sapiens
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2013-10-08 Released: 2014-08-27
Deposition Author(s): Zou, Y., Shao, Z.H., Li, F.D., Gong, D., Wang, C., Gong, Q., Shi, Y.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 3.11 Å
R-Value Free: 0.281
R-Value Work: 0.214
R-Value Observed: 0.217

wwPDB Validation 3D Report Full Report

This is version 1.2 of the entry. See complete history.

Literature

Crystal structure of triple-BRCT-domain of ECT2 and insights into the binding characteristics to CYK-4

Zou, Y., Shao, Z.H., Peng, J., Li, F.D., Gong, D., Wang, C., Zuo, X., Zhang, Z., Wu, J., Shi, Y., Gong, Q.

(2014) FEBS Lett 588: 2911-2920

PubMed: 25068414 Search on PubMed
DOI: https://doi.org/10.1016/j.febslet.2014.07.019
Primary Citation of Related Structures:
4N40

PubMed Abstract:
Homo sapiens ECT2 is a cell cycle regulator that plays critical roles in cytokinesis. ECT2 activity is restrained during interphase via intra-molecular interactions that involve its N-terminal triple-BRCT-domain and its C-terminal DH-PH domain. At anaphase, this self-inhibitory mechanism is relieved by Plk1-phosphorylated CYK-4, which directly engages the ECT2 BRCT domain. To provide a structural perspective for this auto-inhibitory property, we solved the crystal structure of the ECT2 triple-BRCT-domain. In addition, we systematically analyzed the interaction between the ECT2 BRCT domains with phospho-peptides derived from its binding partner CYK-4, and have identified Ser164 as the major phospho-residue that links CYK-4 to the second ECT2 BRCT domain.

Organizational Affiliation

Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China.

Macromolecule Content

Total Structure Weight: 33.07 kDa
Atom Count: 2,142
Modelled Residue Count: 281
Deposited Residue Count: 281
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein ECT2	A	281	Homo sapiens	Mutation(s): 0 Gene Names: ECT2
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H8V3 (Homo sapiens) Explore Q9H8V3 Go to UniProtKB: Q9H8V3
PHAROS: Q9H8V3 GTEx: ENSG00000114346
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q9H8V3
Sequence Annotations Expand
Reference Sequence

Small Molecules

Modified Residues 1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE Query on MSE	A	L-PEPTIDE LINKING	C₅ H₁₁ N O₂ Se		MET

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 3.11 Å
R-Value Free: 0.281
R-Value Work: 0.214
R-Value Observed: 0.217
Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 123.7	α = 90
b = 123.7	β = 90
c = 89.244	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHASES	phasing
PHENIX	refinement