Transport of ricin and 2S albumin precursors to the storage vacuoles of Ricinus communis endosperm involves the Golgi and VSR-like receptors
UNSPECIFIED. (2004) Transport of ricin and 2S albumin precursors to the storage vacuoles of Ricinus communis endosperm involves the Golgi and VSR-like receptors. PLANT JOURNAL, 39 (6). pp. 821-833. ISSN 0960-7412Full text not available from this repository.
Official URL: http://dx.doi.org/10.1111/j.1365-313X.2004.02167.x
We have studied the transport of proricin and pro2S albumin to the protein storage vacuoles of developing castor bean (Ricinus communis L.) endosperm. Immunoelectron microscopy and cell fractionation reveal that both proteins travel through the Golgi apparatus and co-localize throughout their route to the storage vacuole. En route to the PSV, the proteins co-localize in large (>200 nm) vesicles, which are likely to represent developing storage vacuoles. We further show that the sequence-specific vacuolar sorting signals of both proricin and pro2SA bind in vitro to proteins that have high sequence similarity to members of the VSR/AtELP/BP-80 vacuolar sorting receptor family, generally associated with clathrin-mediated traffic to the lytic vacuole. The implications of these findings in relation to the current model for protein sorting to storage vacuoles are discussed.
|Item Type:||Journal Article|
|Subjects:||S Agriculture > SB Plant culture|
|Journal or Publication Title:||PLANT JOURNAL|
|Publisher:||BLACKWELL PUBLISHING LTD|
|Number of Pages:||13|
|Page Range:||pp. 821-833|
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