ABSTRACT
If we forget for a moment a number of proteins devoid of a carbohydrate moiety known as atypical or moonlighting (for example, see Pitarch et al. 2002), whose relevance and mechanism of retention remain obscure, and which will be discussed later, all true cell wall proteins, linked by either covalent or noncovalent bonds are glycoproteic in nature; that is, they are constituted by a protein and a carbohydrate moieties.
