Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 Familyalpha-ketoacid dehydrogenase kinase C-terminal domain8024776 4003507 SCOP2 (2022-06-29)
ASCOP2 Familyalpha-ketoacid dehydrogenase kinase N-terminal domain8024773 4002802 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyGHKL (Gyrase Hsp90 Histidine Kinase MutL) domain-like8037155 3000091 SCOP2 (2022-06-29)
ASCOP2 Superfamilyalpha-ketoacid dehydrogenase kinase N-terminal domain8037152 3001773 SCOP2 (2022-06-29)
BSCOP2B Superfamilyalpha-ketoacid dehydrogenase kinase N-terminal domain8037152 3001773 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyGHKL (Gyrase Hsp90 Histidine Kinase MutL) domain-like8037155 3000091 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APF10436e1jm6A1 A: alpha bundlesX: Bromodomain-likeH: alpha-ketoacid dehydrogenase kinase-N (From Topology)T: alpha-ketoacid dehydrogenase kinase-NF: PF10436ECOD (1.6)
APF02518e1jm6A2 A: a+b two layersX: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase-likeH: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase (From Topology)T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinaseF: PF02518ECOD (1.6)
BPF10436e1jm6B1 A: alpha bundlesX: Bromodomain-likeH: alpha-ketoacid dehydrogenase kinase-N (From Topology)T: alpha-ketoacid dehydrogenase kinase-NF: PF10436ECOD (1.6)
BPF02518e1jm6B2 A: a+b two layersX: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase-likeH: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase (From Topology)T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinaseF: PF02518ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF02518Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase (HATPase_c)Histidine kinase-, DNA gyrase B-, and HSP90-like ATPaseThis family represents the structurally related ATPase domains of histidine kinase, DNA gyrase B and HSP90.Domain
A, B
PF10436Mitochondrial branched-chain alpha-ketoacid dehydrogenase kinase (BCDHK_Adom3)Mitochondrial branched-chain alpha-ketoacid dehydrogenase kinase- Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
Pyruvate dehydrogenase kinase, isozyme 2

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
[pyruvate dehydrogenase (acetyl-transferring)] kinase  M-CSA #603

Mitochondrial Pyruvate Dehydrogenase kinase (PDK) regulates the activity of Pyruvate dehydrogenase complex (PDC) by phosphorylating a serine residue at the E1 subunit and thus inactivating it. Mitochondrial PDK is in a family of serine protein kinases that lacks sequence similarity with all other eukaryotic protein kinase but show similarity with key motifs of prokaryotic histidine protein kinases and a family of eukaryotic ATPases. In mammals, 4 isozymes of PDK have been found, PDK1, PDK2, PDK3, PDK4. PDK2 is found in many tissues but is low in amount in lung and spleen. It only phosphorylates site 2 and 3 serine residue of the E1 subunit.

Defined by 4 residues: HIS:A-247 [auth A-1239]GLU:A-251 [auth A-1243]LYS:A-254 [auth A-1246]ASN:A-255 [auth A-1247]
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