3J4Q

Pseudo-atomic model of the AKAP18-PKA complex in a bent conformation derived from electron microscopy


Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyAKAP7 anchor domain-like8053821 3002232 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyLigT-like8053823 3001408 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyProtein kinase-like (PK-like)8040503 3000066 SCOP2B (2022-06-29)
ESCOP2B SuperfamilyProtein kinase-like (PK-like)8040503 3000066 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AAKAP7_NLSe3j4qA1 A: beta barrelsX: LigT-likeH: LigT-related (From Topology)T: LigT-relatedF: AKAP7_NLSECOD (1.6)
BcNMP_binding_1e3j4qB2 A: beta sandwichesX: jelly-rollH: Double-stranded beta-helix (From Topology)T: Double-stranded beta-helixF: cNMP_binding_1ECOD (1.6)
BRIIae3j4qB1 A: alpha duplicates or obligate multimersX: Dimerization-anchoring domain of cAMP-dependent type II PK regulatory subunit (From Topology)H: Dimerization-anchoring domain of cAMP-dependent type II PK regulatory subunit (From Topology)T: Dimerization-anchoring domain of cAMP-dependent type II PK regulatory subunitF: RIIaECOD (1.6)
CcNMP_binding_1e3j4qC1 A: beta sandwichesX: jelly-rollH: Double-stranded beta-helix (From Topology)T: Double-stranded beta-helixF: cNMP_binding_1ECOD (1.6)
CRIIae3j4qC3 A: alpha duplicates or obligate multimersX: Dimerization-anchoring domain of cAMP-dependent type II PK regulatory subunit (From Topology)H: Dimerization-anchoring domain of cAMP-dependent type II PK regulatory subunit (From Topology)T: Dimerization-anchoring domain of cAMP-dependent type II PK regulatory subunitF: RIIaECOD (1.6)
DPkinase_Tyre3j4qD1 A: a+b complex topologyX: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)H: Protein kinase/SAICAR synthase/ATP-graspT: Protein kinaseF: Pkinase_TyrECOD (1.6)
EPkinase_Tyre3j4qE1 A: a+b complex topologyX: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)H: Protein kinase/SAICAR synthase/ATP-graspT: Protein kinaseF: Pkinase_TyrECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF10470PKA-RI-RII subunit binding domain of A-kinase anchor protein (AKAP7_RIRII_bdg)PKA-RI-RII subunit binding domain of A-kinase anchor proteinAKAP7_RIRII_bdg is the C-terminal domain of the cyclic AMP-dependent protein kinase A, PKA, anchor protein AKAP7. This protein anchors PKA, for its role in regulating PKA-mediated gene transcription in both somatic cells and oocytes, by binding to it ...AKAP7_RIRII_bdg is the C-terminal domain of the cyclic AMP-dependent protein kinase A, PKA, anchor protein AKAP7. This protein anchors PKA, for its role in regulating PKA-mediated gene transcription in both somatic cells and oocytes, by binding to its regulatory subunits, RI and RII, hence being known as a dual-specific AKAP [1]. The 25 crucial amino acids of RII-binding domains in general form structurally conserved amphipathic helices with unrelated sequences; hydrophobic amino acid residues form the backbone of the interaction and hydrogen bond- and salt-bridge-forming amino acid residues increase the affinity of the interaction [2]. The N-terminus, of family AKAP7_NLS, carries the nuclear localisation signal.
Domain
PF10469AKAP7 2'5' RNA ligase-like domain (AKAP7_NLS)AKAP7 2'5' RNA ligase-like domainAKAP7_NLS is the N-terminal domain of the cyclic AMP-dependent protein kinase A, PKA, anchor protein AKAP7. This protein anchors PKA for its role in regulating PKA-mediated gene transcription in both somatic cells and oocytes [1]. AKAP7_NLS carries t ...AKAP7_NLS is the N-terminal domain of the cyclic AMP-dependent protein kinase A, PKA, anchor protein AKAP7. This protein anchors PKA for its role in regulating PKA-mediated gene transcription in both somatic cells and oocytes [1]. AKAP7_NLS carries the nuclear localisation signal (NLS) KKRKK, that indicates the cellular destiny of this anchor protein [2]. Binding to the regulatory subunits RI and RII of PKA is mediated via the family AKAP7_RIRII_bdg. at the C-terminus. This family represents a region that contains two 2'5' RNA ligase like domains Pfam:PF02834. Presumably this domain carried out some as yet unknown enzymatic function.
Domain
B, C
PF02197Regulatory subunit of type II PKA R-subunit (RIIa)Regulatory subunit of type II PKA R-subunit- Domain
B, C
PF00027Cyclic nucleotide-binding domain (cNMP_binding)Cyclic nucleotide-binding domainThis domain sensor domain can bind cAMP, cGMP, c-di-GMP, oxygen and 2-oxoglutarate (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).Domain
D, E
PF00069Protein kinase domain (Pkinase)Protein kinase domain- Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A-kinase anchor protein 18
B, C
cAMP-dependent protein kinase type II-alpha regulatory subunit
D, E
cAMP-dependent protein kinase catalytic subunit alpha