Chloroplast vesicle transport

The puzzle of chloroplast vesicle transport – involvement of GTPases

In the cytosol of plant cells vesicle transport occurs via secretory pathways among the endoplasmic reticulum network, Golgi bodies, secretory granules, endosome, and plasma membrane. Three systems transfer lipids, proteins and other important molecules through aqueous spaces to membrane-enclosed compartments, via vesicles that bud from donor membranes, being coated and uncoated before tethered...

Vesicle transport in chloroplasts

Reconstituting a chloroplast transport system

Calcium waves in membrane fusion hagolysosome fusion is a calcium dependent process. Now, Randall Worth and colleagues (University of Pennsylvania School of Medicine, Philadelphia, PA), and Howard Petty and colleagues (University of Michigan School of Medicine, Ann Arbor, MI) find that a three amino acid motif in the IgG receptor Fc RIIA causes a calcium wave traveling along the plasma membrane...

Vesicle Transport: Springing the TRAPP

When a coated transport vesicle docks with its target membrane, the coat proteins and docking machinery must be released before the membranes can fuse. A recent paper shows how this disassembly is triggered at precisely the right time.

Vesicle Tethering: TRAPPing Transport Carriers

Transport vesicles must dock with the appropriate acceptor membrane to ensure faithful protein delivery. Recent work identifies some of the molecular mechanisms that contribute to the specificity of this reaction.