Polygalacturonase inhibiting proteins: players in plant innate immunity?

被引：127
作者：
Federici, L
Di Matte, A
Fernandez-Recio, J
Tsernoglou, D
Cervone, F
机构：
[1] Univ Chieti, CeSI Ctr Studi Sullinvecchiamento, I-66013 Chieti, Italy
[2] Univ Chieti, Dipartimento Sci Biomed, I-66013 Chieti, Italy
[3] Univ Roma La Sapienza, Dipartimento Sci Biochim, I-00185 Rome, Italy
[4] Mol Modeling & Bioinformat Unit, E-08028 Barcelona, Spain
[5] Univ Roma La Sapienza, Dipartimento Biol Vegetale, I-00185 Rome, Italy
来源：
TRENDS IN PLANT SCIENCE | 2006年 / 11卷 / 02期
关键词：
D O I：
10.1016/j.tplants.2005.12.005
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Polygalacturonase-inhibiting proteins (PGIPs) are extracellular leucine-rich repeat (LRR) proteins that recognize and inhibit fungal polygalacturonases (PGs). The PG-PGIP interaction favours the accumulation of elicitor-active oligogalacturonides and causes the activation of defence responses. Small gene families encode PGIP isoforms that differ in affinity and specificity for PGs secreted by different pathogens. The consensus motif within the LRR structure of PGIPs is the same as that of the extracellular receptors of the plant innate immune system. Structural and functional evidence suggest that PGIPs are versatile proteins involved in innate immunity and that they are capable of recognizing different surface motifs of functionally related but structurally variable PGs.
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页码：65 / 70
页数：6
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