A Profusion of Molecular Scissors for Pectins: Classification, Expression, and Functions of Plant Polygalacturonases.

ABSTRACT: In plants, the construction, differentiation, maturation, and degradation of the cell wall are essential for development. Pectins, which are major constituents of primary cell walls in eudicots, function in multiple developmental processes through their synthesis, modification, and degradation. Several pectin modifying enzymes regulate pectin degradation via different modes of action. Polygalacturonases (PGs), which function in the last step of pectin degradation, are a crucial class of pectin-modifying enzymes. Based on differences in their hydrolyzing activities, PGs can be divided into three main types: exo-PGs, endo-PGs, and rhamno-PGs. Their functions were initially investigated based on the expression patterns of PG genes and measurements of total PG activity in organs. In most plant

SUBMITTER: Yang Y 

PROVIDER: S-EPMC6102391 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature