a, The same SMO tiled peptide array from Fig. 7c, but including the sequences of all positive hits in each array cluster. b, Complete human SMO C-tail sequence used to create the peptide array. In a,b, the SMO PKI motif identified in the pCT is indicated in red. Key residues in this PKI motif, along with ones in the candidate PKI motif in the dCT, are colored as in Fig. 1a.