Members of this family inhibit pectin methylesterases (PMEs) and invertases through formation of a non-covalent 1:1 complex . They have been implicated in the regulation of fruit development, carbohydrate metabolism and cell wall extension. They may also be involved in inhibiting microbial pathogen PMEs.
The major plane tree (Platanus acerifolia) pollen allergen, Pla a 1 , and the minor kiwi fruit allergen Act d 6 belong to this family.
Family-defining Pfam domains (at least one of these domains is present in each family member):
|Pfam domain||Pfam clan|
|PF04043||Plant invertase/pectin methylesterase inhibitor||-|
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