52. Herth, W., A. Kuppel, W. Franke, and
R.M. Brown, Jr. 1975. The ultrastructure of the scale cellulose
from Pleurochrysis scherffelii under various experimental
conditions. Cytobiologie 10:268-284.
52. Abstract
Various procedures for preparing and modifying
the alkali-resistant structural polysaccharide of the scales of
the haptophycean alga, Pleurochrysis scherffelii, are described.
Corresponding changes in the ultrastructural arrangement are
revealed by electron microscopy and X-ray diffraction. In addition,
the specific amino acid composition of a proteinaceous component
associated with this structural polysaccharide is given. The
data support the concept that cellulose is the predominant structural
polysaccharide in these scales and appears to be firmly linked
to polypeptide moieties with an extraordinarily high serine content.
These compositional and structural results represent the final
evidence that fibrils containing crystalline cellulose I are produced
within the cisternae of the Golgi apparatus in this plant cell.