Sequential and structural homology between intracellular pathogenesis-related proteins and a group of latex proteins

Research output: Contribution to journalArticle


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.


  • Peter Osmark
  • Brian Boyle
  • Normand Brisson
External organisations
  • External Organization - Unknown
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Endocrinology and Diabetes


  • Bet v 1 - homology - latex proteins - pathogenesis-related proteins - PR-10 - sequence analysis
Original languageEnglish
Pages (from-to)1243-1246
JournalPlant Molecular Biology
Issue number6
Publication statusPublished - 1998
Publication categoryResearch
Externally publishedYes