Uridylylation of herbaspirillum seropedicae glnb and glnk proteins is differentially affected by ATP, ADP and 2-oxoglutarate in vitro. Bonatto, A., C., Souza, E., M., Oliveira, M., A., S., Monteiro, R., A., Chubatsu, L., S., Huergo, L., F., & Pedrosa, F., O. Archives of Microbiology, 194(8):643-652, Springer Science Business Media, 3, 2012. ![Uridylylation of herbaspirillum seropedicae glnb and glnk proteins is differentially affected by ATP, ADP and 2-oxoglutarate in vitro [link]](https://bibbase.org/img/filetypes/link.svg "link")
Website abstract bibtex PII are signal-transducing proteins that integrate metabolic signals and transmit this information to a large number of proteins. In proteobacteria, PII are modified by GlnD (uridylyltransferase/uridylyl-removing enzyme) in response to the nitrogen status. The uridylylation/deuridylylation cycle of PII is also regulated by carbon and energy signals such as ATP, ADP and 2-oxoglutarate (2-OG). These molecules bind to PII proteins and alter their tridimensional structure/conformation and activity. In this work, we determined the effects of ATP, ADP and 2-OG levels on the in vitro uridylylation of Herbaspirillum seropedicae PII proteins, GlnB and GlnK. Both proteins were uridylylated by GlnD in the presence of ATP or ADP, although the uridylylation levels were higher in the presence of ATP and under high 2-OG levels. Under excess of 2-OG, the GlnB uridylylation level was higher in the presence of ATP than with ADP, while GlnK uridylylation was similar with ATP or ADP. Moreover, in the presence of ADP/ATP molar ratios varying from 10/1 to 1/10, GlnB uridylylation level decreased as ADP concentration increased, whereas GlnK uridylylation remained constant. The results suggest that uridylylation of both GlnB and GlnK responds to 2-OG levels, but only GlnB responds effectively to variation on ADP/ATP ratio.
@article{
title = {Uridylylation of herbaspirillum seropedicae glnb and glnk proteins is differentially affected by ATP, ADP and 2-oxoglutarate in vitro},
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year = {2012},
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abstract = {PII are signal-transducing proteins that integrate metabolic signals and transmit this information to a large number of proteins. In proteobacteria, PII are modified by GlnD (uridylyltransferase/uridylyl-removing enzyme) in response to the nitrogen status. The uridylylation/deuridylylation cycle of PII is also regulated by carbon and energy signals such as ATP, ADP and 2-oxoglutarate (2-OG). These molecules bind to PII proteins and alter their tridimensional structure/conformation and activity. In this work, we determined the effects of ATP, ADP and 2-OG levels on the in vitro uridylylation of Herbaspirillum seropedicae PII proteins, GlnB and GlnK. Both proteins were uridylylated by GlnD in the presence of ATP or ADP, although the uridylylation levels were higher in the presence of ATP and under high 2-OG levels. Under excess of 2-OG, the GlnB uridylylation level was higher in the presence of ATP than with ADP, while GlnK uridylylation was similar with ATP or ADP. Moreover, in the presence of ADP/ATP molar ratios varying from 10/1 to 1/10, GlnB uridylylation level decreased as ADP concentration increased, whereas GlnK uridylylation remained constant. The results suggest that uridylylation of both GlnB and GlnK responds to 2-OG levels, but only GlnB responds effectively to variation on ADP/ATP ratio.},
bibtype = {article},
author = {Bonatto, Ana C. and Souza, Emanuel M. and Oliveira, Marco A S and Monteiro, Rose A. and Chubatsu, Leda S. and Huergo, Luciano F. and Pedrosa, Fábio O.},
journal = {Archives of Microbiology},
number = {8}
}
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