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首页> 外文期刊>Fish & Shellfish Immunology >Characterisation of a serine proteinase from Penaeus vannamei haemocytes
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Characterisation of a serine proteinase from Penaeus vannamei haemocytes

机译：南美白对虾血细胞丝氨酸蛋白酶的表征

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摘要

Serine proteinases are involved, besides digestive role, in immune response processes. In addition to the typical serine proteinase domain, proteinases from arthropod haemocytes contain so-called clip domains which are believed to exert regulatory functions. Clones coding for clip domain-containing serine proteinases were isolated from both Penaeus vannamei and Penaeus monodon haemocyte cDNA libraries. These proteins have most of the structural characteristics of serine proteinase domain, but in the clip domain there are only four cysteines, whereas in most other clip domains there are six. Such structures are named pseudo-clip domains and apparently seem to be widely distributed in Penaeid shrimp. These proteinases were only expressed in haemocytes and not in muscles, hypodermis, heart, tail stalk, pleopods or hepatopancreas.
机译：丝氨酸蛋白酶除具有消化作用外，还参与免疫应答过程。除了典型的丝氨酸蛋白酶结构域之外，节肢动物血细胞的蛋白酶还包含所谓的夹子结构域，据认为它们发挥调节功能。从南美白对虾和斑节对虾血细胞cDNA文库中分离出编码含有片段结构域的丝氨酸蛋白酶的克隆。这些蛋白质具有丝氨酸蛋白酶结构域的大多数结构特征，但是在片段结构域中只有四个半胱氨酸，而在大多数其他片段结构域中有六个半胱氨酸。这种结构被称为伪片段结构域，显然似乎在对虾中广泛分布。这些蛋白酶仅在血细胞中表达，而在肌肉，皮下组织，心脏，尾柄，腹足或肝胰腺中不表达。

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