title: Models of intracellular transport and evolution of the Golgi complex.
abstract: We have performed a systematic analysis of models explaining the mechanisms of the intracellular biosecretory transport. The models assessed include not only those based on one mechanism (the dissociation model (and its individual case, the vesicular model), the progression model (and its individual cases, the cisterna maturation/progression and the carrier maturation models), and the lateral diffusion model (and its individual case, the bolus model), but also combined models of transport (the percolating-vesicles model and the synthetic model), including several transport mechanisms. Most of these models are not able to explain recent data on the evolution of genes involved in intracellular transport and Golgi evolution. The carrier maturation model proposing that fusion of the large cargo domain with the distal (closer to the plasmalemma) compartment precedes fission of the domain from the proximal compartment exhibits the best performance in correlation with the available information on evolution of the biosecretory pathway.
authors.affiliation: Istituto di Ricerche Farmacologiche Mario Negri, Consorzio Mario Negri Sud, Department of Cell Biology and Oncology, Santa Maria Imbaro (Chieti), Italy.
authors.forename: Galina V
authors.initials: GV
authors.lastname: Beznoussenko
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Mironov
mesh_terms: D005075:Biological Evolution; D001692:Biological Transport; D002451:Cell Compartmentation; D004721:Endoplasmic Reticulum / Q000502:physiology; D005089:Exocytosis / Q000502:physiology*; D006056:Golgi Apparatus / Q000378:metabolism / Q000502:physiology*; D007425:Intracellular Membranes / Q000737:chemistry / Q000378:metabolism; D008954:Models, Biological