Biological Information and Intelligent Design: evolving new protein folds

[Billcole]

Of course, we have already seen that Meyer is mistaken here as well. If de novo protein-coding genes such as nylonase can come into being from scratch, as it were, then it is demonstrably the case that new protein folds can be formed by evolutionary mechanisms without difficulty. - See more at: Biological Information and Intelligent Design - BioLogos

The description does not appear to be a protein from scratch but a modified enzyme. Am I mistaken here ?