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Structure and composition of the cell wall of Neurospora crassa


Structure and composition of the cell wall of Neurospora crassa



Journal of Bacteriology 94(1): 202-212



ISSN/ISBN: 0021-9193

PMID: 6027990

The structure and composition of the cell walls of hyphae of Neurospora crassa were investigated by electron microscopy, chemical analysis, and X-ray diffraction both before and after progressive enzymatic degradation by snail gut enzymes, chitinase, and trypsin. The wall consists of 2 phases: randomly disposed skeletal microfibrils of chitin only and an amorphous matrix which contains both [beta]-glucans and protein. The protein contains a high percentage of the amides of aspartic and glutamic acid but no hydroxy-proline or cysteine. A portion of this protein is a component of or is associated with a system of pores which is embedded in the matrix of the wall. These pores, 40 to 70 A in outside diameter, sometimes branch and seem to provide a 3-dimensional network from one side of the wall to the other. They may be a general system of transport across the walls.

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Accession: 025534741

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