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The second outermost layer of the spore wall, as described in Saccharomyces. A rigid yet dynamic structure surrounding the plasma membrane that affords protection from stresses and contributes to cell morphogenesis, consisting of extensively cross-linked glycoproteins and carbohydrates. The glycoproteins may be modified with N- or O-linked carbohydrates, or glycosylphosphatidylinositol (GPI) anchors; the polysaccharides are primarily branched glucans, including beta-linked and alpha-linked glucans, and may also include chitin and other carbohydrate polymers, but not cellulose or pectin. Enzymes involved in cell wall biosynthesis are also found in the cell wall. Note that some forms of fungi develop a capsule outside of the cell wall under certain circumstances; this is considered a separate structure. The specialized envelope lying outside the cell membrane of a spore. The rigid or semi-rigid envelope lying outside the cell membrane of plant, fungal, and most prokaryotic cells, maintaining their shape and protecting them from osmotic lysis. In plants it is made of cellulose and, often, lignin; in fungi it is composed largely of polysaccharides; in bacteria it is composed of peptidoglycan. Any constituent part of the cell wall, the rigid or semi-rigid envelope lying outside the cell membrane of plant, fungal, and most prokaryotic cells, maintaining their shape and protecting them from osmotic lysis. The specialized cell wall of the ascospore (spore), which is the product of meiotic division. Examples of this component are found in Fungi. Any constituent part of an external encapsulating structure, a structure that lies outside the plasma membrane and surrounds the entire cell.

View Gene Ontology (GO) Term

GO TERM SUMMARY

Name: chitosan layer of spore wall
Acc: GO:0005631
Aspect: Cellular Component
Desc: The second outermost layer of the spore wall, as described in Saccharomyces.
Proteins in PDR annotated with:
   This term: 3 [Search]
   Term or descendants: 3 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0005631 - chitosan layer of spore wall (interactive image map)

YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle