ISDA

Deposition Date 2011-07-26

Release Date 2011-10-05

Last Version Date 2024-11-20

Entry Detail

PDB ID:

3T4O

Keywords:

hormone receptor

Title:

Arabidopsis histidine kinase 4 sensor domain in complex with dihydrozeatin

Biological Source:

Source Organism:

Arabidopsis thaliana (Taxon ID: 3702)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.75 Å

R-Value Free:

0.20

R-Value Work:

0.17

R-Value Observed:

0.18

Space Group:

P 32 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Histidine kinase 4
Gene (Uniprot):AHK4
Chain IDs:A, B
Chain Length:270
Number of Molecules:2
Biological Source:Arabidopsis thaliana

UniProt ID:Q9C5U0 Pfam ID:PF03924

Ligand Molecules

MLI

WA2

Primary Citation

Structural basis for cytokinin recognition by Arabidopsis thaliana histidine kinase 4.

Hothorn, M, Dabi, T, Chory, J.Show

Nat.Chem.Biol. 7 766 768 (2011)

PMID: 21964459 DOI: 10.1038/nchembio.667

Abstact

Cytokinins are classic hormones that orchestrate plant growth and development and the integrity of stem cell populations. Cytokinin receptors are eukaryotic sensor histidine kinases that are activated by both naturally occurring adenine-type cytokinins and urea-based synthetic compounds. Crystal structures of the Arabidopsis thaliana histidine kinase 4 sensor domain in complex with different cytokinin ligands now rationalize the hormone-binding specificity of the receptor and may spur the design of new cytokinin ligands.

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Primary Citation of related structures