The middle lamella of plant cells is mainly composed of calcium pectate, a type of pectin made up of galacturonic acid residues.
Calcium ions bound to the pectin molecules are crucial for their adhesive properties, allowing them to stick to adjacent cells and help maintain the plant tissue’s integrity.
Hemicellulose, muramic acid, and phosphoglycerides are not typically found in the middle lamella.
Thus, calcium pectate plays an integral part in keeping plant cells united.
