منابع مشابه
Protein storage bodies and vacuoles
Plants store proteins in embryo and vegetative cells to provide carbon, nitrogen, and sulfur resources for subsequent growth and development. The storage and mobilization cycles of amino acids that compose these proteins are critical to the life cycle of plants. Mechanisms for protein storage and mobilization serve many different developmental and physiological functions. For example, stored pr...
متن کاملPathways for protein transport to seed storage vacuoles.
Plant vacuoles have multiple functions: they can act both as digestive organelles and as receptacles for storage proteins. Different types of vacuoles can coexist in the same cell, which adds complexity to the process of targeting to these compartments. A fuller understanding of this process is of evident value when endeavouring to exploit the plant secretory pathway for heterologous protein pr...
متن کاملInternal membranes in maize aleurone protein storage vacuoles: beyond autophagy.
The readers of The Plant Cell have been treated recently to a tour-de-force of electron microscopy and cell culture techniques with dazzling images of tomographic reconstructions of protein storage vacuoles (PSVs) in maize (Zea mays) aleurone cells (Reyes et al., 2011). The authors deserve congratulations. Reyes et al. (2011) present data to document that protein bodies comprised largely of alc...
متن کاملTransport of storage proteins to protein storage vacuoles is mediated by large precursor-accumulating vesicles
Novel vesicles that accumulate large amounts of proprotein precursors of storage proteins were purified from maturing pumpkin seeds. These vesicles were designated precursor-accumulating (PAC) vesicles and had diameters of 200 to 400 nm. They contained an electron-dense core of storage proteins surrounded by an electron-translucent layer, and some vesicles also contained small vesicle-like stru...
متن کاملProtein mobilities and P-selectin storage in Weibel-Palade bodies.
Using fluorescence recovery after photobleaching (FRAP) we measured the mobilities of EGFP-tagged soluble secretory proteins in the endoplasmic reticulum (ER) and in individual Weibel-Palade bodies (WPBs) at early (immature) and late (mature) stages in their biogenesis. Membrane proteins (P-selectin, CD63, Rab27a) were also studied in individual WPBs. In the ER, soluble secretory proteins were ...
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ژورنال
عنوان ژورنال: The Plant Cell
سال: 1999
ISSN: 1040-4651,1532-298X
DOI: 10.1105/tpc.11.4.601