3K0T image
Deposition Date 2009-09-25
Release Date 2010-06-16
Last Version Date 2024-11-06
Entry Detail
PDB ID:
3K0T
Keywords:
SUGAR BINDING PROTEIN
Title:
Crystal structure of PSPTO -PSP protein in complex with D-beta-Glucose from Pseudomonas syringae pv. tomato str. DC3000
Biological Source:
Source Organism:
Pseudomonas syringae pv. tomato (Taxon ID: 323)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.10 Å
R-Value Free:
0.23
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 21 21 21
3K0T validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Endoribonuclease L-PSP, putative
Gene (Uniprot):PSPTO_0072
Chain IDs:A, B, C
Chain Length:143
Number of Molecules:3
Biological Source:Pseudomonas syringae pv. tomato
UniProt ID:Q88BE5 Pfam ID:PF01042
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MSE A MET SELENOMETHIONINE
Ligand Molecules
BGC
Primary Citation
Crystal structure of the PSPTO-PSP protein from Pseudomonas syringae pv. tomato str. DC3000 in complex with D-glucose
Biochem.Biophys.Res.Commun. 397 82 86 (2010)
PMID: 20478270 DOI: 10.1016/j.bbrc.2010.05.071

Abstact

The perchloric acid-soluble protein (PSP) is an endoribonuclease and on the basis of sequence similarity has been assigned to the YjgF/YER057c/UK114 family. These family members are ubiquitous and highly conserved in evolution, and participate in regulating basic cellular metabolism. Here we present the 2.1A crystal structure of the PSP protein from Pseudomonas syringae pv. tomato str. DC3000 (PSPTO-PSP), in complex with D-glucose. The quaternary structure of PSPTO-PSP is a homologous trimer. Glucose is located in the cavity between each two monomers. Comparison of the hydrogen bonds between ligands and YjgF/YER057c/UK114 family homologues confirms that the conserved Arg(103) of PSPTO-PSP is a key amino acid in this cavity for ligand binding. It indicated that the involvement of PSPTO-PSP in essential cellular mechanism was regulated by glucose occupying this active site.

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Disease

Primary Citation of related structures
3K0T