8CK6

Crystal structure of maize CKO/CKX8 in complex with urea-derived inhibitor 2-[(3,5-dichlorophenyl)carbamoylamino]-4-methoxy-benzamide

• PDB DOI: https://doi.org/10.2210/pdb8CK6/pdb

• Classification: FLAVOPROTEIN
• Organism(s): Zea mays
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2023-02-14 Released: 2024-02-28 
• Deposition Author(s): Kopecny, D., Briozzo, P., Morera, S.
• Funding Organization(s): Czech Science Foundation, Ministry of Education, Youth and Sports of the Czech Republic

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.209 
• R-Value Work: 0.174 
• R-Value Observed: 0.175 

Literature

Cytokinin oxidase/dehydrogenase inhibitors: progress toward a practice

Nisler, J., Koncitikova, R., Klimes, P., Kadlecova, A., Murvanidze, N., Kopecny, D., Werbrouck, S.P.O., de Diego, N., Havlicek, L., Briozzo, P., Morera, S., Zalabak, D., Spichal, L.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 60.41 kDa 
• Atom Count: 4,382 
• Modelled Residue Count: 499 
• Deposited Residue Count: 539 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
cytokinin dehydrogenase	A	539	Zea mays	Mutation(s): 0  Gene Names: ZEAMMB73_Zm00001d053578 EC: 1.5.99.12
UniProt
Find proteins for A0A1D6QQD6 (Zea mays) Explore A0A1D6QQD6  Go to UniProtKB:  A0A1D6QQD6

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FAD	H [auth A]	FLAVIN-ADENINE DINUCLEOTIDE C27 H33 N9 O15 P2 VWWQXMAJTJZDQX-UYBVJOGSSA-N
UZ3 (Subject of Investigation/LOI)	I [auth A]	2-[[3,5-bis(chloranyl)phenyl]carbamoylamino]-4-methoxy-benzamide C15 H13 Cl2 N3 O3 LGINOCHKOLUZAO-UHFFFAOYSA-N
GOL	D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
EDO	B [auth A], C [auth A], E [auth A], F [auth A], G [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.209 
• R-Value Work: 0.174 
• R-Value Observed: 0.175 
• Space Group: P 6₅

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 101.7	α = 90
b = 101.7	β = 90
c = 128.08	γ = 120

Software Package:

Software Name	Purpose
BUSTER	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-02-28 
Deposition Author(s): Kopecny, D., Briozzo, P., Morera, S.

---

Funding Organization	Location	Grant Number
Czech Science Foundation	Czech Republic	21-07661S
Ministry of Education, Youth and Sports of the Czech Republic	Czech Republic	CZ.02.1.01/0.0/0.0/16_019/0000827

Revision History  

• Version 1.0: 2024-02-28
  Type: Initial release