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Title: Environment sensing and response mediated by ABC transporters

Abstract

Abstract Background: Transporter proteins are one of an organism s primary interfaces with the environment. The expressed set of transporters mediates cellular metabolic capabilities and influences signal transduction pathways and regulatory networks. The functional annotation of most transporters is currently limited to general classification into families. The development of capabilities to map ligands with specific transporters would improve our knowledge of the function of these proteins, improve the annotation of related genomes, and facilitate predictions for their role in cellular responses to environmental changes. Results: To improve the utility of the functional annotation for ABC transporters, we expressed and purified the set of solute binding proteins from Rhodopseudomonas palustris and characterized their ligand-binding specificity. Our approach utilized ligand libraries consisting of environmental and cellular metabolic compounds, and fluorescence thermal shift based high throughput ligand binding screens. This process resulted in the identification of specific binding ligands for approximately 64% of the purified and screened proteins. The collection of binding ligands is representative of common functionalities associated with many bacterial organisms as well as specific capabilities linked to the ecological niche occupied by R. palustris. Conclusion: The functional screen identified specific ligands that bound to ABC transporter periplasmic binding subunits frommore » R. palustris. These assignments provide unique insight for the metabolic capabilities of this organism and are consistent with the ecological niche of strain isolation. This functional insight can be used to improve the annotation of related organisms and provides a route to evaluate the evolution of this important and diverse group of transporter proteins.« less

Authors:
 [1];  [1];  [1];  [1];  [2];  [1]
  1. Argonne National Laboratory (ANL)
  2. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
Work for Others (WFO)
OSTI Identifier:
1047648
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
BMC Genomics
Additional Journal Information:
Journal Volume: 12; Journal Issue: Suppl 1; Journal ID: ISSN 1471-2164
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; 60 APPLIED LIFE SCIENCES; CLASSIFICATION; FLUORESCENCE; FUNCTIONALS; PROTEINS; RHODOPSEUDOMONAS; SCREENS; SOLUTES; SPECIFICITY; STRAINS

Citation Formats

Giuliani, Sarah E, Frank, Ashley M, Corgliano, Danielle M, Siefert, Catherine, Hauser, Loren John, and Collart, Frank. Environment sensing and response mediated by ABC transporters. United States: N. p., 2011. Web. doi:10.1186/1471-2164-12-S1-S8.
Giuliani, Sarah E, Frank, Ashley M, Corgliano, Danielle M, Siefert, Catherine, Hauser, Loren John, & Collart, Frank. Environment sensing and response mediated by ABC transporters. United States. https://doi.org/10.1186/1471-2164-12-S1-S8
Giuliani, Sarah E, Frank, Ashley M, Corgliano, Danielle M, Siefert, Catherine, Hauser, Loren John, and Collart, Frank. 2011. "Environment sensing and response mediated by ABC transporters". United States. https://doi.org/10.1186/1471-2164-12-S1-S8.
@article{osti_1047648,
title = {Environment sensing and response mediated by ABC transporters},
author = {Giuliani, Sarah E and Frank, Ashley M and Corgliano, Danielle M and Siefert, Catherine and Hauser, Loren John and Collart, Frank},
abstractNote = {Abstract Background: Transporter proteins are one of an organism s primary interfaces with the environment. The expressed set of transporters mediates cellular metabolic capabilities and influences signal transduction pathways and regulatory networks. The functional annotation of most transporters is currently limited to general classification into families. The development of capabilities to map ligands with specific transporters would improve our knowledge of the function of these proteins, improve the annotation of related genomes, and facilitate predictions for their role in cellular responses to environmental changes. Results: To improve the utility of the functional annotation for ABC transporters, we expressed and purified the set of solute binding proteins from Rhodopseudomonas palustris and characterized their ligand-binding specificity. Our approach utilized ligand libraries consisting of environmental and cellular metabolic compounds, and fluorescence thermal shift based high throughput ligand binding screens. This process resulted in the identification of specific binding ligands for approximately 64% of the purified and screened proteins. The collection of binding ligands is representative of common functionalities associated with many bacterial organisms as well as specific capabilities linked to the ecological niche occupied by R. palustris. Conclusion: The functional screen identified specific ligands that bound to ABC transporter periplasmic binding subunits from R. palustris. These assignments provide unique insight for the metabolic capabilities of this organism and are consistent with the ecological niche of strain isolation. This functional insight can be used to improve the annotation of related organisms and provides a route to evaluate the evolution of this important and diverse group of transporter proteins.},
doi = {10.1186/1471-2164-12-S1-S8},
url = {https://www.osti.gov/biblio/1047648}, journal = {BMC Genomics},
issn = {1471-2164},
number = Suppl 1,
volume = 12,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2011},
month = {Sat Jan 01 00:00:00 EST 2011}
}