These fused vesicles migrate along microtubules through a special trafficking compartment, called the vesicular-tubular cluster, that lies between the endoplasmic reticulum and the Golgi apparatus.
We previously described a morphologically distinct, vesicle-containing trafficking compartment termed the periciliary membrane compartment (PCMC) at the base of C. elegans cilia proximal to the TZ (Kaplan et al., 2012).
The second is that mDpy-30 knockdown changes the location of the trafficking compartments themselves, without altering β1 integrin trafficking.
In both RPE and RGC5 cells, the possible association between optineurin and markers of vesicular trafficking compartments was assessed.
When combined with our studies showing that exogenously [5] and endogenously (Fig. 2) expressed Rab4b and Rab11 become enriched in the protrusions of cells depleted of mDpy-30, these data suggest that instead of changing the trafficking of β1 integrin, mDpy-30 knockdown leads to the spatial redistribution of the trafficking compartments themselves.
For example, the internalization of MHC class I proteins, many GPI-linked receptors, and bacterial exotoxins rely on trafficking compartments with heretofore undefined coat components.
Like many transmembrane proteins, GPCRs exist in a dynamic equilibrium between receptors expressed at the plasma membrane and those present within intracellular trafficking compartments.
One major issue when investigating the source of virus envelope is the fact that many trafficking compartments, including the ERGIC, the Golgi, the TGN, late and recycling endosomes are organised by microtubule-based minus-end directed motor proteins such as dynein, and tend to cluster in close proximity to the MTOC adjacent to the nucleus.
It is based on a stratification of the observation face of a pit dug perpendicular to the direction of tillage and traffic: spatial compartments are distinguished, according to the nature of the mechanical stresses they have been submitted to during tillage and crop management.
This is achieved through the actions of vesicular tubular transport intermediates that traffic between compartments, and factors that control the fusion of these with acceptor membranes.
