pectic matrix
The gel-like pectin matrix consists of the interlinked acidic and neutral pectin networks that are further cross-linked by calcium bridges. Pectins consist largely of long chains of mostly galacturonic acid units (typically 1,4 linkages and sometimes methyl esters). Three major pectic polysaccharides (homogalacturonan, rhamnogalacturonan I and rhamnogalacturonan II) are thought to occur in all primary cell walls.
GO:0110165
cellular anatomical structure
is_a
GO:0009530
primary cell wall
part_of
GO:0009531
secondary cell wall
part_of