FIGURE 1.

The N. crassa vegetative hyphae cell wall. The locations of the various cell wall components and how they are cross-linked together in the vegetative cell wall are depicted. Chitin is shown in purple and is located adjacent to the plasma membrane at the bottom of the diagram. The β-1,3-glucan is shown in black and located in the middle of the cell wall. Cell wall glycoproteins are shown in red. GPI anchors are shown in red and extent into the plasma membrane. N-linked oligosaccharides are shown with N-acetylglucosamine residues in green squares, mannoses from the N-linked oligosaccharide shown in orange circles, and processed galactomannans shown in magenta circles. O-linked oligosaccharides are also shown in orange. Lichenin is shown in blue and is attached to the processed galactomannan and to β-1,3-glucans. Note that the β-1,3-glucan, lichenin, and glycoproteins form a cross-linked cell wall matrix.