dc.contributor.author | Jiang, Liwen | eng |
dc.contributor.author | Phillips, Thomas | eng |
dc.contributor.author | Hamm, Christopher A. | eng |
dc.contributor.author | Drozdowicz, Yolanda M. | eng |
dc.contributor.author | Rea, Philip A. | eng |
dc.contributor.author | Maeshima, Masayoshi | eng |
dc.contributor.author | Rogers, Sally W. | eng |
dc.contributor.author | Rogers, John C., 1949- | eng |
dc.date.issued | 2001 | eng |
dc.description | doi: 10.1083/jcb.200107012 | eng |
dc.description.abstract | Storage proteins are deposited into protein storage vacuoles (PSVs) during plant seed development and maturation and stably accumulate to high levels; subsequently, during germination the storage proteins are rapidly degraded to provide nutrients for use by the embryo. Here, we show that a PSV has within it a membrane-bound compartment containing crystals of phytic acid and proteins that are characteristic of a lytic vacuole. This compound organization, a vacuole within a vacuole whereby storage functions are separated from lytic functions, has not been described previously for organelles within the secretory pathway of eukaryotic cells. The partitioning of storage and lytic functions within the same vacuole may reflect the need to keep the functions separate during seed development and maturation and yet provide a ready source of digestive enzymes to initiate degradative processes early in germination. | eng |
dc.description.sponsorship | This work was supported by grants from the National Science Foundation (MCB-9974429), Department of Energy (DE-FG03-97ER20277), and Human
Frontier Science Program (RG0018/2000) to J.C. Rogers, and from the Department of Energy (DE-FG02-91ER20055) to P.A. Rea. Y.M. Drozdowicz is an NSF/DOE/USDA Plant Training Grant fellow. L. Jiang is supported by a Direct Grant (project code 2030238) and a Special Grant for Conducting
Research Abroad in the Summer of 2001 from the Chinese University
of Hong Kong, and a grant from the Research Grants Council of the
Hong Kong Special Administrative Region, China (project CUHK4156/
01M). | eng |
dc.identifier.citation | The Journal of Cell Biology, Volume 155, Number 6, December 10, 2001, 991-1002. | eng |
dc.identifier.issn | 0021-9525 | eng |
dc.identifier.uri | http://hdl.handle.net/10355/8613 | eng |
dc.language | English | eng |
dc.publisher | The Journal of Cell Biology | eng |
dc.relation.ispartof | Biological Sciences publications (MU) | eng |
dc.relation.ispartofcommunity | University of Missouri-Columbia. College of Arts and Sciences. Division of Biological Sciences | eng |
dc.source.harvested | The Journal of Cell Biology Web site: http://jcb.rupress.org/content/155/6/991.full.pdf+html | eng |
dc.subject.lcsh | Plant vacuoles | eng |
dc.subject.lcsh | Seed proteins | eng |
dc.subject.lcsh | Seeds -- Development | eng |
dc.title | The Protein Storage Vacuole: A Unique Compound Organelle | eng |
dc.type | Article | eng |