Crystal structure of myristoylated WT catalytic subunit of cAMP-dependent protein kinase in complex with SP20

Role of N-terminal myristylation in the structure and regulation of cAMP-dependent protein kinase.

cAMP-dependent protein kinase catalytic subunit alpha

cAMP-dependent protein kinase inhibitor alpha

PKI-alpha, cAMP-dependent protein kinase inhibitor, muscle/brain isoform

GNAAAAKKGSEQESVKEFLAKAKEDFLKKWETPSQNTAQLDQFDRIKTLGTGSFGRVMLVKHKESGNHYAMKILDKQKVV
KLKQIEHTLNEKRILQAVNFPFLVKLEFSFKDNSNLYMVMEYVAGGEMFSHLRRIGRF(SEP)EPHARFYAAQIVLTFEY
LHSLDLIYRDLKPENLLIDQQGYIQVTDFGFAKRVKGRTW(TPO)LCGTPEYLAPEIILSKGYNKAVDWWALGVLIYEMA
AGYPPFFADQPIQIYEKIVSGKVRFPSHFSSDLKDLLRNLLQVDLTKRFGNLKNGVNDIKNHKWFATTDWIAIYQRKVEA
PFIPKFKGPGDTSNFDDYEEEEIRV(SEP)INEKCGKEFTEF

GNAAAAKKGSEQESVKEFLAKAKEDFLKKWETPSQNTAQLDQFDRIKTLGTGSFGRVMLVKHKESGNHYAMKILDKQKVV
KLKQIEHTLNEKRILQAVNFPFLVKLEFSFKDNSNLYMVMEYVAGGEMFSHLRRIGRFSEPHARFYAAQIVLTFEYLHSL
DLIYRDLKPENLLIDQQGYIQVTDFGFAKRVKGRTWTLCGTPEYLAPEIILSKGYNKAVDWWALGVLIYEMAAGYPPFFA
DQPIQIYEKIVSGKVRFPSHFSSDLKDLLRNLLQVDLTKRFGNLKNGVNDIKNHKWFATTDWIAIYQRKVEAPFIPKFKG
PGDTSNFDDYEEEEIRVSINEKCGKEFTEF

Mother liquor: 6% MPD
Protein solution: 50 mM Bicine, 150 mM Ammonium Acetate, 10 mM DTT, 8-10 mg/mL 9% MeOH,
1:1 protein:mother liquor, VAPOR DIFFUSION, HANGING DROP, temperature 277.15K, pH 8.0

Same protein in complex with AMP-PNP and SP20.

Myr-K7C catalytic subunit of PKA in complex with SP20 and AMP-PNP.

Myr-K7C catalytic subunit of PKA in complex with SP20.

The catalytic subunit of PKA in complex with ATP and IP20.

Myristoylated catalytic subunit of PKA bound to IP20.

The catalytic subunit of PKA in complex with ADP and SP20.

HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS

Protein kinase, myristoylated, Phosphotransferase of Ser/Thr, Mg, PKI, PKA Regulatory subunits, phosphorylated on S139, T197, S338, myristoylated on G1, TRANSFERASE-TRANSFERASE INHIBITOR complex

BINDING SITE FOR CHAIN I OF CAMP-DEPENDENT PROTEIN KINASE INHIBITOR ALPHA