This is, however, a very conservative substitution, as both aspartic acid and glutamic acid have acidic side chains, and thus would probably not significantly disrupt calcium binding.
These enzymes are highly specific for single-stranded nucleic acids, have acidic pH optima, and are essentially inactive at alkali pH.
If those foods have acidic qualities, the acidity will be converted to sweetness, but it will also retain the other taste properties: that's why the hot sauce was still hot.
Though all these amino acids except lysine have acidic pI (from 6.0 for Alanine to 5.6 for valine), the net pI of the protein tended to be slightly basic (pI 7.24), maybe due to the relatively higher abundance of lysine (5.2%) with a very high basic pI (9.74).
The hydrogen of a carboxyl group can be removed (to form a negatively charged carboxylate ion), and thus molecules containing the carboxyl group have acidic properties and are generally known as carboxylic acids.
Glass is known as one of the most resistant materials against sulfuric acid (H2SO4) attack; it can be assumed that concretes containing glass powder have acidic resistance as well.
