Osmark P, Boyle B, Brisson N
Department of Biochemistry, Université de Montréal, Canada.
Plant Mol Biol. 1998 Dec;38(6):1243-6. doi: 10.1023/a:1006060224012.
The intracellular pathogenesis-related proteins have been identified in a broad range of flowering plants. Some display quite different patterns of expression, in many cases unrelated to the pathogenic response. Nevertheless, these proteins are all very similar and in most cases share more than 35% sequence identity. In this report we investigate the significance of a rather weak similarity between the intracellular pathogenesis-related (IPR or PR-10) proteins and a group of proteins identified in the latex of opium poppy and in Arabidopsis, among others. A sequence analysis held together with the recently published three-dimensional structure of Bet v 1, an IPR protein from birch pollen, strongly suggests sequential and structural homology between the two protein families.
细胞内病程相关蛋白已在多种开花植物中得到鉴定。有些蛋白表现出截然不同的表达模式，在许多情况下与致病反应无关。然而，这些蛋白都非常相似，在大多数情况下序列同一性超过35%。在本报告中，我们研究了细胞内病程相关（IPR或PR - 10）蛋白与在罂粟乳胶以及拟南芥等植物中鉴定出的一组蛋白之间相当微弱的相似性的意义。结合最近发表的桦树花粉中的IPR蛋白Bet v 1的三维结构进行的序列分析强烈表明这两个蛋白家族之间存在序列和结构同源性。
