Create a Structural Alignment for structures with different length using Biopython. RMSD and residue specific delta can be calculated.
5IQT: Mitchell, A. J., et al. "Structural basis for halogenation by iron-and 2-oxo-glutarate-dependent enzyme WelO5." Nature chemical biology 12.8 (2016): 636-640. https://doi.org/10.2210/pdb5IQT/pdb
8ACV: Voss, M., et al. "Enzyme engineering enables inversion of substrate stereopreference of the halogenase WelO5." ChemCatChem 14.24 (2022): e202201115. https://doi.org/10.2210/pdb8ACV/pdb