Title |
Vanin genes are clustered (human 6q22–24 and mouse 10A2B1) and encode isoforms of pantetheinase ectoenzymes
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Published in |
Immunogenetics, May 2001
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DOI | 10.1007/s002510100327 |
Pubmed ID | |
Authors |
Florent Martin, Fabrice Malergue, Giuseppina Pitari, Jean Philippe, Samantha Philips, Claude Chabret, Samuel Granjeaud, Marie Mattei, Andrew J. Mungall, Philippe Naquet, Franck Galland |
Abstract |
The mouse Vanin-1 molecule plays a role in thymic reconstitution following damage by irradiation. We recently demonstrated that it is a membrane pantetheinase (EC 3.56.1.-). This molecule is the prototypic member of a larger Vanin family encoded by at least two mouse (Vanin-1 and Vanin-3) and three human (VNN1, VNN2, VNN3) orthologous genes. We now report (1) the structural characterization of the human and mouse Vanin genes and their organization in clusters on the 6q22-24 and 10A2B1 chromosomes, respectively; (2) identification of the human VNN3 gene and the demonstration that the mouse Vanin-3 molecule is secreted by cells, and (3) that the Vanin genes encode different isoforms of the mammalian pantetheinase activity. Thus, the Vanin family represents a novel class of secreted or membrane-associated ectoenzymes. We discuss here their possible role in processes pertaining to tissue repair in the context of oxidative stress. |
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Demographic breakdown
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