, Volume 133, Issue 4, pp 330-331

Layered structure of trichoderma cell walls

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Abstract

Trichoderma pseudokoningii mycelium was treated sequentially with the following enzymes; (1) lysing enzyme and laminarinase, (2) pronase, and (3) chitinase. (1) Removed the outermost amorphous glucan layer and revealed a striated layer which was removed by (2). Microfibrils were exposed and removed by (3). The wall thus has a layered structure comprising glucan, protein and/or glycoprotein, and chitin.

Glucan was prepared and subjected to methylation and hydrolysis. 1,3,5,6-Tetra-O-acetyl-2,4-di-O-methyl-D-glucose was identified suggesting that the 1–3 and 1–6 glucans are cross-linked at intervals.