A protein complex is an assembly of associated proteins. Its composition specifies component identities and their stoichiometry; variable accessory occupancy and transient partners can make the assembly a population of related forms rather than one fixed object.
A vesicle-tethering complex connecting membrane traffic to a selected cell surface. Recruitment to an apical initiation site helps coordinate delivery during epithelial lumen formation.
A cellulosome organizes multiple carbohydrate-degrading enzymes on a scaffold. Local cooperation, substrate attachment and diffusion constraints jointly influence its performance.
ERMES is the yeast ER–mitochondria encounter structure, a contact-associated complex. Synthetic-tether rescue and lipid-conversion assays help distinguish its architectural and functional contributions.
