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Pex1, a pollen-specific gene with an extensin-like domain.

机译:Pex1,具有延伸蛋白样结构域的花粉特异性基因。

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We report here the identification of a pollen-specific gene from Zea mays that contains multiple Ser-(Pro)n repeats, the motif found in the cell wall-associated extensins. Sequence analysis reveals that the encoded protein has a putative globular domain at the N terminus and an extensin-like domain at the C terminus. The Pex1 (pollen extensin-like) gene is expressed exclusively in pollen, not in vegetative or female tissues, and is not induced in leaves upon wounding. We propose that the encoded protein may have a role in reproduction, either as a structural element deposited in the pollen tube wall during its rapid growth or as a sexual recognition molecule that interacts with partner molecules in the pistil.
机译:我们在这里报告从玉米的花粉特异性基因的鉴定,其中包含多个Ser-(Pro)n重复序列,在细胞壁相关的延伸蛋白中发现了基序。序列分析表明,编码的蛋白质在N末端具有一个假定的球形结构域,在C末端具有一个类似延伸蛋白的结构域。 Pex1(花粉延伸蛋白样)基因仅在花粉中表达,而在植物或女性组织中不表达,并且在受伤时不会在叶片中诱导表达。我们建议编码的蛋白质可能在繁殖中发挥作用,既可以作为在其快速生长过程中沉积在花粉管壁中的结构元素,也可以作为与雌蕊中伴侣分子相互作用的性识别分子。

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