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Arabinogalactan protein and wall-associated kinase in a plasmalemmal reticulum with specialized verticesArabinogalactan protein and wall-associated kinase (WAK) are suspected to be regulatory players at the interface between cytoplasm and cell wall. Both WAK(s) and arabinogalactan shown likely to represent arabinogalactan protein(s) have been visualized there with computational optical-sectioning microscopy. The arabinogalactan occurs in a polyhedral array at the external face of the cell membrane. WAK, and other proteins as yet unidentified, appear to fasten the membrane to the wall at vertices of the array. Evidence is presented that the array bears an important part of the mechanical stress experienced by the membrane, and it is speculated that the architectural organization of arabinogalactan protein, WAK, and other components of the array is critical for coordination of endomembrane activities, growth, and differentiation. The array has been named the plasmalemmal reticulum.
Document ID
20040088804
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gens, J. S.
(Washington University St. Louis, Missouri, United States)
Fujiki, M.
Pickard, B. G.
Evans, M. L.
Date Acquired
August 21, 2013
Publication Date
July 1, 2000
Publication Information
Publication: Protoplasma
Volume: 212
Issue: 2-Jan
ISSN: 0033-183X
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: 9835100-7003
CONTRACT_GRANT: IBN9-41601
CONTRACT_GRANT: NAGW-3046
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Plant Biology
Non-NASA Center

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