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Two Arabidopsis thaliana genes encode functional pectin methylesterase inhibitors 1
Author(s) -
Raiola A,
Camardella L,
Giovane A,
Mattei B,
De Lorenzo G,
Cervone F,
Bellincampi D
Publication year - 2004
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(03)01491-1
Subject(s) - arabidopsis , arabidopsis thaliana , pectin , pectinesterase , cell wall , chemistry , biochemistry , gene , enzyme , biology , mutant , pectinase
We have identified, expressed and characterized two genes from Arabidopsis thaliana ( AtPMEI‐1 and AtPMEI‐2 ) encoding functional inhibitors of pectin methylesterases. AtPMEI‐1 and AtPMEI‐2 are cell wall proteins sharing many features with the only pectin methylesterase inhibitor (PMEI) characterized so far from kiwi fruit. Both Arabidopsis proteins interact with and inhibit plant‐derived pectin methylesterases (PMEs) but not microbial enzymes. The occurrence of functional PMEIs in Arabidopsis indicates that a mechanism of controlling pectin esterification by inhibition of endogenous PMEs is present in different plant species.