Zymolectin Interaction Theory
The accepted mechanism of flocculation involves a protein-carbohydrate model (Miki et al., 1982) (figure 1.3). Fully flocculent yeast cells exhibit carbohydrate α-mannan receptors and protein zymolectins (section 1.5.4). Zymolectins are so termed as they may not be true bivalent lectins (Speers, Smart, Stewart and Jin,1998) It has been suggested that zymolectin interactions between the protein and mannan moities results in the flocculation phenotype (section 4.1) with Ca2+ ions required for the correct conformation of the flocculation lectins. Coflocculation between Kluyveromyces and Schizosaccharomyces has been shown to be by a “lectinic” mechanism (El-Behhari et al., 2000). This theory explains the essential role of calcium and how deproteinisation affects flocculation.
Read more about this topic: Yeast Flocculation
Famous quotes containing the words interaction and/or theory:
“Here is this vast, savage, howling mother of ours, Nature, lying all around, with such beauty, and such affection for her children, as the leopard; and yet we are so early weaned from her breast to society, to that culture which is exclusively an interaction of man on man,—a sort of breeding in and in, which produces at most a merely English nobility, a civilization destined to have a speedy limit.”
—Henry David Thoreau (1817–1862)
“The weakness of the man who, when his theory works out into a flagrant contradiction of the facts, concludes “So much the worse for the facts: let them be altered,” instead of “So much the worse for my theory.””
—George Bernard Shaw (1856–1950)