Membrane proteins involved in targetted membrane fusion

Transport vesicles require the presence of specific membrane proteins toidentify their destination. One model assumes that the transport vesicle carries the identifying tag, which interacts with a target organelle through membrane fusion. A protein that had been known to play a part in membrane fusion events has been identified. NSF and its attachment proteins (SNAPs) have been used to determine the presence of SNAP receptors, syntaxins A and B and synaptobrevin.