Cutin and suberin are hydrophobic lipid biopolyester components of the cell walls of specialized plant tissue and cell-types, where they facilitate adaptation to terrestrial habitats. Many steps in their biosynthetic pathways have been characterized, but the basis of their spatial deposition and precursor trafficking is not well understood. Members of the GDSL lipase/esterase family catalyze cutin polymerization, and candidate proteins have been proposed to mediate interactions between cutin or suberin and other wall components. Comparative genomic studies of charophyte algae and early diverging land plants, combined with knowledge of the biosynthesis, trafficking and assembly mechanisms, suggests an origin for the capacity to secrete waxes, as well as aliphatic and phenolic compounds before the first colonization of true terrestrial habitats.

中文翻译：

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角质和木栓质：特殊脂质细胞壁支架的组装和起源。

角质和木栓质是专门植物组织和细胞类型的细胞壁的疏水脂质生物聚酯成分，它们在其中有助于适应陆地生境。他们的生物合成途径中的许多步骤都已被表征，但对其空间沉积和前体运输的基础却知之甚少。GDSL脂肪酶/酯酶家族的成员催化角质素聚合，并且已经提出了候选蛋白来介导角质或木栓质与其他壁成分之间的相互作用。对藻类藻类和早期分化的陆地植物进行的比较基因组研究，结合对生物合成，运输和组装机制的了解，为真正的陆地生境首次定殖之前分泌蜡以及脂族和酚类化合物的能力提供了依据。