4D74 image
Entry Detail
PDB ID:
4D74
Keywords:
Title:
1.57 A crystal structure of erwinia amylovora tyrosine phosphatase amsI
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2014-11-19
Release Date:
2016-01-20
Method Details:
Experimental Method:
Resolution:
1.57 Å
R-Value Free:
0.17
R-Value Work:
0.16
R-Value Observed:
0.16
Space Group:
P 31 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:PROTEIN-TYROSINE-PHOSPHATASE AMSI
Mutations:YES
Chain IDs:A
Chain Length:170
Number of Molecules:1
Biological Source:ERWINIA AMYLOVORA
Ligand Molecules
Primary Citation
Characterization and 1.57 A Resolution Structure of the Key Fire Blight Phosphatase Amsi from Erwinia Amylovora
Acta Crystallogr.,Sect.F 72 903 ? (2016)
PMID: 27917839 DOI: 10.1107/S2053230X16018781

Abstact

AmsI is a low-molecular-weight protein tyrosine phosphatase that regulates the production of amylovoran in the Gram-negative bacterium Erwinia amylovora, a specific pathogen of rosaceous plants such as apple, pear and quince. Amylovoran is an exopolysaccharide that is necessary for successful infection. In order to shed light on AmsI, its structure was solved at 1.57 Å resolution at the same pH as its highest measured activity (pH 5.5). In the active site, a water molecule, bridging between the catalytic Arg15 and the reaction-product analogue sulfate, might be representative of the water molecule attacking the phospho-cysteine intermediate in the second step of the reaction mechanism.

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Primary Citation of related structures