Figure 2
(a) Amino-acid sequence alignment between PKAc from C. griseus (KAPCA_CRIGR), M. musculus (KAPCA_MOUSE), H. sapiens (KAPCA_HUMAN) and B. taurus (KAPCA_BOVIN) with secondary-structure annotation from PDB entry 4wih reprocessed with ESPript (Robert & Gouet, 2014 ). Identical residues are boxed in red and differences are marked in white. (b) Comparison of PKAc–PKI-tide complexes from C. griseus (PDB entry 4wih; PKAc, blue; PKI, cyan), M. musculus (PDB entry 4o22; PKAc, red; PKI, orange) and H. sapiens (PDB entry 3nx8; PKAc, green; PKI, yellow). The positioning of the phosphate-anchoring `glycine-rich loops' is magnified in the circle. Structural alignments were performed with PyMOL (Schrödinger). |