Before revision:  However, different TFs can partially share their binding sequences . This "redundancy" of binding defines a way URLanizing TFs in "motif families" that goes beyond the usual classification based on protein structural similarities.
After revision:  However, different TFs can partially share their binding sequences due to their common evolutionary origin. This `redundancy' of binding defines a way URLanizing TFs in "motif families" that goes beyond the usual classification based on protein structural similarities.