Enzymatic, structural, and biophysical characterization of a single-domain antibody (VHH) selectively and tightly inhibiting neutrophil elastase and exhibiting favorable developability properties. - Redeghieri P; Moray J; Kerff F; Gohy S; Leal T; Muyldermans S; Vanbever R; Morales-Yánez FJ; Dumoulin M (Protein science : a publication of the Protein Society, 2024)