I'm attempting to recapitualte ab initio results of structures published in Bhardwaj, Mulligan, Bahl et al. (2016) Nature 538(7625):329-335. doi: 10.1038/nature19791. The methods utilized a 4mer 6mer database for both design creation and ab initio structure prediction. Is this database publically available or share-able? If not, are there any considerations when attempting to make my own 4mer/6mer database (e.g. extracting the vall database sequences and creating my own 4mer/6mer set with Rosetta)?