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A complex structure between the Catalytic and Regulatory subunit of Protein Kinase A that represents the inhibited state

Source organisms:
Biochemical function: cAMP-dependent protein kinase regulator activity
Biological process: regulation of protein phosphorylation
Cellular component: cAMP-dependent protein kinase complex

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EC 2.7.11.11: cAMP-dependent protein kinase

Reaction catalysed:
ATP + a protein = ADP + a phosphoprotein
Systematic name:
ATP:protein phosphotransferase (cAMP-dependent)
Alternative Name(s):
  • PKA
  • PKA C
  • Protein kinase A
  • STK22

GO terms

Biochemical function:
Biological process:
Cellular component:

Sequence families

Pfam Protein families (Pfam)
PF00027
Domain description: Cyclic nucleotide-binding domain
Occurring in:
  1. cAMP-dependent protein kinase type I-alpha regulatory subunit, N-terminally processed
The deposited structure of PDB entry 2qcs contains 2 copies of Pfam domain PF00027 (Cyclic nucleotide-binding domain) in cAMP-dependent protein kinase type I-alpha regulatory subunit, N-terminally processed. Showing 2 copies in chain B.

PF00069
Domain description: Protein kinase domain
Occurring in:
  1. cAMP-dependent protein kinase catalytic subunit alpha
The deposited structure of PDB entry 2qcs contains 1 copy of Pfam domain PF00069 (Protein kinase domain) in cAMP-dependent protein kinase catalytic subunit alpha. Showing 1 copy in chain A.

InterPro InterPro annotations
IPR000595
Domain description: Cyclic nucleotide-binding domain
Occurring in:
  1. cAMP-dependent protein kinase type I-alpha regulatory subunit, N-terminally processed
IPR018488
Domain description: Cyclic nucleotide-binding, conserved site
Occurring in:
  1. cAMP-dependent protein kinase type I-alpha regulatory subunit, N-terminally processed
IPR018490
Domain description: Cyclic nucleotide-binding domain superfamily
Occurring in:
  1. cAMP-dependent protein kinase type I-alpha regulatory subunit, N-terminally processed
IPR014710
Domain description: RmlC-like jelly roll fold
Occurring in:
  1. cAMP-dependent protein kinase type I-alpha regulatory subunit, N-terminally processed
IPR000719
Domain description: Protein kinase domain
Occurring in:
  1. cAMP-dependent protein kinase catalytic subunit alpha
IPR012198
Domain description: cAMP-dependent protein kinase regulatory subunit
Occurring in:
  1. cAMP-dependent protein kinase type I-alpha regulatory subunit, N-terminally processed
IPR000961
Domain description: AGC-kinase, C-terminal
Occurring in:
  1. cAMP-dependent protein kinase catalytic subunit alpha
IPR008271
Domain description: Serine/threonine-protein kinase, active site
Occurring in:
  1. cAMP-dependent protein kinase catalytic subunit alpha
IPR017441
Domain description: Protein kinase, ATP binding site
Occurring in:
  1. cAMP-dependent protein kinase catalytic subunit alpha
IPR044109
Domain description: cAMP-dependent protein kinase catalytic subunit
Occurring in:
  1. cAMP-dependent protein kinase catalytic subunit alpha
IPR011009
Domain description: Protein kinase-like domain superfamily
Occurring in:
  1. cAMP-dependent protein kinase catalytic subunit alpha

Structure domains

CATH CATH domains
2.60.120.10
Class: Mainly Beta
Architecture: Sandwich
Topology: Jelly Rolls
Homology: Jelly Rolls
Occurring in:
  1. cAMP-dependent protein kinase type I-alpha regulatory subunit, N-terminally processed
The deposited structure of PDB entry 2qcs contains 2 copies of CATH domain 2.60.120.10 (Jelly Rolls) in cAMP-dependent protein kinase type I-alpha regulatory subunit, N-terminally processed. Showing 2 copies in chain B.
3.30.200.20
Class: Alpha Beta
Architecture: 2-Layer Sandwich
Topology: Phosphorylase Kinase; domain 1
Homology: Phosphorylase Kinase; domain 1
Occurring in:
  1. cAMP-dependent protein kinase catalytic subunit alpha
The deposited structure of PDB entry 2qcs contains 1 copy of CATH domain 3.30.200.20 (Phosphorylase Kinase; domain 1) in cAMP-dependent protein kinase catalytic subunit alpha. Showing 1 copy in chain A.
1.10.510.10
Class: Mainly Alpha
Architecture: Orthogonal Bundle
Topology: Transferase(Phosphotransferase); domain 1
Homology: Transferase(Phosphotransferase) domain 1
Occurring in:
  1. cAMP-dependent protein kinase catalytic subunit alpha
The deposited structure of PDB entry 2qcs contains 1 copy of CATH domain 1.10.510.10 (Transferase(Phosphotransferase); domain 1) in cAMP-dependent protein kinase catalytic subunit alpha. Showing 1 copy in chain A.
SCOP SCOP annotation
88854
Class: Alpha and beta proteins (a+b)
Fold: Protein kinase-like (PK-like)
Superfamily: Protein kinase-like (PK-like)
Occurring in:
  1. cAMP-dependent protein kinase catalytic subunit alpha
The deposited structure of PDB entry 2qcs contains 1 copy of SCOP domain 88854 (Protein kinases, catalytic subunit) in cAMP-dependent protein kinase catalytic subunit alpha. Showing 1 copy in chain A.

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