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Characterization and 1.57 Å resolution structure of the key fire blight phosphatase AmsI from Erwinia amylovora. | LitMetric

Characterization and 1.57 Å resolution structure of the key fire blight phosphatase AmsI from Erwinia amylovora.

Acta Crystallogr F Struct Biol Commun

Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 5, 39100 Bolzano, Italy.

Published: December 2016

AI Article Synopsis

Article Abstract

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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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5137468PMC
http://dx.doi.org/10.1107/S2053230X16018781DOI Listing

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