title: Plant cutin genesis: unanswered questions.
abstract: The genesis of cutin, the main lipid polymer present in the biosphere, has remained elusive for many years. Recently, two main approaches have attempted to explain the process of cutin polymerization. One describes the existence of an acyltransferase cutin synthase enzyme that links activated monomers of cutin in the outer cell wall, while the other shows that plant cutin is the final result of an extracellular nonenzymatic self-assembly and polymerizing process of cutin monomers. In this opinion article, we explain both models and suggest that they could be pieces of a more complex biological scenario. We also highlight their different characteristics and current limitations, and suggest a potential synergism of both hypotheses.
authors.affiliation: IHSM-UMA-CSIC, Departamento de Mejora Genética y Biotecnología, E.E. La Mayora, Consejo Superior de Investigaciones Científicas, Algarrobo-Costa, E-29750 Málaga, Spain.
authors.forename: Eva
authors.initials: E
authors.lastname: Domínguez
authors.affiliation: Nanophysics, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genoa, Italy.
authors.forename: José A
authors.initials: JA
authors.lastname: Heredia-Guerrero
authors.affiliation: IHSM-UMA-CSIC, Departamento de Biología Molecular y Bioquímica, Universidad de Málaga, E-29071 Málaga, Spain. Electronic address: heredia@uma.es.
authors.forename: Antonio
authors.initials: A
authors.lastname: Heredia
mesh_terms: D000217:Acyltransferases / Q000378:metabolism; D008563:Membrane Lipids / Q000378:metabolism*; D008954:Models, Biological; D010944:Plants / Q000201:enzymology / Q000378:metabolism*; D058105:Polymerization
chemical_list: D008563:Membrane Lipids; C000521:cutin; D000217:Acyltransferases
keywords: acyltransferases; cuticle; cutin; plant cutin synthesis; self-assembly process