The catalytic protein kinase fold evolved into the non-catalytic C-lobe domain known as the KIND domain, which primarily functions as an interaction domain [PMID: 12877999].
phmmer: 0.0001; database: nr; sequence_cutoff: 100aa; clustering: cdhit: 90%; catalytic residues: changed, lack of N-lobe based on - PMID: 12877999