Before revision:  This article presents a "stepwise ansatz" for recursively enumerating a physically realistic subspace of protein conformations, implemented as a stepwise assembly (SWA) protocol in the Rosetta framework.
After revision:  This article introduces a modeling strategy based on a 'stepwise ansatz', recently developed for RNA modeling, which posits that any realistic all-atom molecular conformation can be built up by residue-by-residue stepwise enumeration. When harnessed to a dynamic-programming-like recursion in the Rosetta framework, the resulting stepwise assembly (SWA) protocol in the Rosetta framework.