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Bridging Between Proline Structure, Functions, Metabolism, and Involvement in Organism Physiology

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Abstract

Much is now known about proline multifunctionality and metabolism; some aspects of its biological functions are still unclear. Here, we discuss some cases in the proline, structure, definition, metabolism, compartmentalization, accumulation, plausible functions and also its implication in homeostasis and organism physiology. Indeed, we report the role of proline in cellular homeostasis, including redox balance and energy status and their implication as biocatalyst for aldolase activity. Proline can act as a signaling molecule to modulate mitochondrial functions, influence cell proliferation or cell death, and trigger specific gene expression, which can be essential for plant recovery from stresses. Although, the regulation and the function of proline accumulation, during abiotic stresses, are not yet completely understood. The engineering of proline metabolism could lead to new opportunities to improve plant tolerance against environmental stresses. This atypical amino acid has a potential role in the toxicity during growth of some microorganism, vegetal, and mammalian species. Furthermore, we note that the purpose through the work is to provide a rich, concise, and mostly cohesive source on proline, considered as a platform and an anchor between several disciplines and biological functions.

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Acknowledgments

This work was supported by grants from the Ministry of Higher Education, Scientific Research and Technology, Tunisia.

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Authors and Affiliations

  1. Biotechnology and Plant Improvement Laboratory Centre of Biotechnology of Sfax, University of Sfax, Street Sidi Mansour Km 6, P.O. Box “1177”, 3018, Sfax, Tunisia

    Walid Saibi, Kaouthar Feki, Ines Yacoubi & Faiçal Brini

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  1. Walid Saibi
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  2. Kaouthar Feki
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  3. Ines Yacoubi
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  4. Faiçal Brini
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Correspondence to Walid Saibi.

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Saibi, W., Feki, K., Yacoubi, I. et al. Bridging Between Proline Structure, Functions, Metabolism, and Involvement in Organism Physiology. Appl Biochem Biotechnol 176, 2107–2119 (2015). https://doi.org/10.1007/s12010-015-1713-0

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  • DOI: https://doi.org/10.1007/s12010-015-1713-0

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