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Journal of Cell Science, Vol 90, 735-750, Copyright © 1988 by Company of Biologists

Submitted on February 23, 1988
Accepted on May 10, 1988

Molecular organization of the cell wall and cell-wall crystals from Chlamydomonas eugamatos

URSULA W. GOODENOUGH 1 and JOHN E. HEUSER 1

1 Departments of Biology and Cell Biology/Physiology, Washington University St Louis, MO 63130, USA

The unicellular green alga Chlamydomonas eugamatos is surrounded by a glycoproteinaceous cell wall. Using the quick-freeze deep-etch technique, we analyse the organization of the wall layers in situ, and delineate the structure of the outermost crystalline layer (W6). We also show the structure of the protein monomers, and propose a model for their organization in the crystal that is similar to that deduced for the related Chlorogonium elongatum crystal by image reconstruction analysis. We also show that the C. eugamatos crystal is highly similar to the flagellar collar of Chlamydomonas reinhardtii.

Key words: cell wall, Chlamydomonas reinhardtii, crystal organization

Submitted on February 23, 1988
Accepted on May 10, 1988




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© The Company of Biologists Ltd 1988