| IED ID | IndEnz0002000081 |
| Enzyme Type ID | protease000081 |
| Protein Name |
3-phosphoinositide-dependent protein kinase 1 hPDK1 EC 2.7.11.1 |
| Gene Name | PDPK1 PDK1 |
| Organism | Homo sapiens (Human) |
| Taxonomic Lineage | cellular organisms Eukaryota Opisthokonta Metazoa Eumetazoa Bilateria Deuterostomia Chordata Craniata Vertebrata Gnathostomata (jawed vertebrates) Teleostomi Euteleostomi Sarcopterygii Dipnotetrapodomorpha Tetrapoda Amniota Mammalia Theria Eutheria Boreoeutheria Euarchontoglires Primates Haplorrhini Simiiformes Catarrhini Hominoidea (apes) Hominidae (great apes) Homininae Homo Homo sapiens (Human) |
| Enzyme Sequence | MARTTSQLYDAVPIQSSVVLCSCPSPSMVRTQTESSTPPGIPGGSRQGPAMDGTAAEPRPGAGSLQHAQPPPQPRKKRPEDFKFGKILGEGSFSTVVLARELATSREYAIKILEKRHIIKENKVPYVTRERDVMSRLDHPFFVKLYFTFQDDEKLYFGLSYAKNGELLKYIRKIGSFDETCTRFYTAEIVSALEYLHGKGIIHRDLKPENILLNEDMHIQITDFGTAKVLSPESKQARANSFVGTAQYVSPELLTEKSACKSSDLWALGCIIYQLVAGLPPFRAGNEYLIFQKIIKLEYDFPEKFFPKARDLVEKLLVLDATKRLGCEEMEGYGPLKAHPFFESVTWENLHQQTPPKLTAYLPAMSEDDEDCYGNYDNLLSQFGCMQVSSSSSSHSLSASDTGLPQRSGSNIEQYIHDLDSNSFELDLQFSEDEKRLLLEKQAGGNPWHQFVENNLILKMGPVDKRKGLFARRRQLLLTEGPHLYYVDPVNKVLKGEIPWSQELRPEAKNFKTFFVHTPNRTYYLMDPSGNAHKWCRKIQEVWRQRYQSHPDAAVQ |
| Enzyme Length | 556 |
| Uniprot Accession Number | O15530 |
| Absorption | |
| Active Site | ACT_SITE 205; /note="Proton acceptor"; /evidence="ECO:0000255|PROSITE-ProRule:PRU00159, ECO:0000255|PROSITE-ProRule:PRU10027" |
| Activity Regulation | ACTIVITY REGULATION: Homodimerization regulates its activity by maintaining the kinase in an autoinhibitory conformation. NPRL2 down-regulates its activity by interfering with tyrosine phosphorylation at the Tyr-9, Tyr-373 and Tyr-376 residues. The 14-3-3 protein YWHAQ acts as a negative regulator by association with the residues surrounding the Ser-241 residue. STRAP positively regulates its activity by enhancing its autophosphorylation and by stimulating its dissociation from YWHAQ. SMAD2, SMAD3, SMAD4 and SMAD7 also positively regulate its activity by stimulating its dissociation from YWHAQ. Activated by phosphorylation on Tyr-9, Tyr-373 and Tyr-376 by INSR in response to insulin. {ECO:0000269|PubMed:12177059, ECO:0000269|PubMed:16251192, ECO:0000269|PubMed:18616680, ECO:0000269|PubMed:20978239}. |
| Binding Site | BINDING 111; /note="ATP"; /evidence="ECO:0000269|PubMed:12169624, ECO:0000269|PubMed:15741170, ECO:0000269|PubMed:22999883"; BINDING 166; /note="ATP"; /evidence="ECO:0000269|PubMed:12169624, ECO:0000269|PubMed:15741170, ECO:0000269|PubMed:22999883"; BINDING 209; /note="ATP; via carbonyl oxygen"; /evidence="ECO:0000269|PubMed:22999883"; BINDING 223; /note="ATP"; /evidence="ECO:0000269|PubMed:12169624, ECO:0000269|PubMed:15741170, ECO:0000269|PubMed:22999883" |
| Calcium Binding | |
| catalytic Activity | CATALYTIC ACTIVITY: Reaction=ATP + L-seryl-[protein] = ADP + H(+) + O-phospho-L-seryl-[protein]; Xref=Rhea:RHEA:17989, Rhea:RHEA-COMP:9863, Rhea:RHEA-COMP:11604, ChEBI:CHEBI:15378, ChEBI:CHEBI:29999, ChEBI:CHEBI:30616, ChEBI:CHEBI:83421, ChEBI:CHEBI:456216; EC=2.7.11.1; CATALYTIC ACTIVITY: Reaction=ATP + L-threonyl-[protein] = ADP + H(+) + O-phospho-L-threonyl-[protein]; Xref=Rhea:RHEA:46608, Rhea:RHEA-COMP:11060, Rhea:RHEA-COMP:11605, ChEBI:CHEBI:15378, ChEBI:CHEBI:30013, ChEBI:CHEBI:30616, ChEBI:CHEBI:61977, ChEBI:CHEBI:456216; EC=2.7.11.1; |
| DNA Binding | |
| EC Number | 2.7.11.1 |
| Enzyme Function | FUNCTION: Serine/threonine kinase which acts as a master kinase, phosphorylating and activating a subgroup of the AGC family of protein kinases. Its targets include: protein kinase B (PKB/AKT1, PKB/AKT2, PKB/AKT3), p70 ribosomal protein S6 kinase (RPS6KB1), p90 ribosomal protein S6 kinase (RPS6KA1, RPS6KA2 and RPS6KA3), cyclic AMP-dependent protein kinase (PRKACA), protein kinase C (PRKCD and PRKCZ), serum and glucocorticoid-inducible kinase (SGK1, SGK2 and SGK3), p21-activated kinase-1 (PAK1), protein kinase PKN (PKN1 and PKN2). Plays a central role in the transduction of signals from insulin by providing the activating phosphorylation to PKB/AKT1, thus propagating the signal to downstream targets controlling cell proliferation and survival, as well as glucose and amino acid uptake and storage. Negatively regulates the TGF-beta-induced signaling by: modulating the association of SMAD3 and SMAD7 with TGF-beta receptor, phosphorylating SMAD2, SMAD3, SMAD4 and SMAD7, preventing the nuclear translocation of SMAD3 and SMAD4 and the translocation of SMAD7 from the nucleus to the cytoplasm in response to TGF-beta. Activates PPARG transcriptional activity and promotes adipocyte differentiation. Activates the NF-kappa-B pathway via phosphorylation of IKKB. The tyrosine phosphorylated form is crucial for the regulation of focal adhesions by angiotensin II. Controls proliferation, survival, and growth of developing pancreatic cells. Participates in the regulation of Ca(2+) entry and Ca(2+)-activated K(+) channels of mast cells. Essential for the motility of vascular endothelial cells (ECs) and is involved in the regulation of their chemotaxis. Plays a critical role in cardiac homeostasis by serving as a dual effector for cell survival and beta-adrenergic response. Plays an important role during thymocyte development by regulating the expression of key nutrient receptors on the surface of pre-T cells and mediating Notch-induced cell growth and proliferative responses. Provides negative feedback inhibition to toll-like receptor-mediated NF-kappa-B activation in macrophages. Isoform 3 is catalytically inactive. {ECO:0000269|PubMed:10226025, ECO:0000269|PubMed:10480933, ECO:0000269|PubMed:10995762, ECO:0000269|PubMed:12167717, ECO:0000269|PubMed:14585963, ECO:0000269|PubMed:14604990, ECO:0000269|PubMed:16207722, ECO:0000269|PubMed:16251192, ECO:0000269|PubMed:17327236, ECO:0000269|PubMed:17371830, ECO:0000269|PubMed:18835241, ECO:0000269|PubMed:9094314, ECO:0000269|PubMed:9445476, ECO:0000269|PubMed:9707564, ECO:0000269|PubMed:9768361}. |
| Temperature Dependency | |
| PH Dependency | |
| Pathway | |
| nucleotide Binding | NP_BIND 92..94; /note="ATP"; /evidence="ECO:0000269|PubMed:12169624, ECO:0000269|PubMed:15741170, ECO:0000269|PubMed:22999883"; NP_BIND 160..162; /note="ATP"; /evidence="ECO:0000269|PubMed:12169624, ECO:0000269|PubMed:15741170, ECO:0000269|PubMed:22999883" |
| Features | Active site (1); Alternative sequence (4); Beta strand (18); Binding site (4); Chain (1); Compositional bias (1); Domain (2); Erroneous initiation (1); Helix (21); Modified residue (15); Mutagenesis (14); Nucleotide binding (2); Region (2); Turn (5) |
| Keywords | 3D-structure;ATP-binding;Acetylation;Activator;Alternative splicing;Cell junction;Cell membrane;Cytoplasm;Direct protein sequencing;Kinase;Membrane;Nucleotide-binding;Nucleus;Phosphoprotein;Reference proteome;Serine/threonine-protein kinase;Transcription;Transcription regulation;Transferase;Ubl conjugation |
| Interact With | P31749; Q00005; O75385; P54252; P42858; Q8WXH2; Q8IUH5 |
| Induction | INDUCTION: Stimulated by insulin, and the oxidants hydrogen peroxide and peroxovanadate. |
| Subcellular Location | SUBCELLULAR LOCATION: Cytoplasm. Nucleus. Cell membrane; Peripheral membrane protein. Cell junction, focal adhesion. Note=Tyrosine phosphorylation seems to occur only at the cell membrane. Translocates to the cell membrane following insulin stimulation by a mechanism that involves binding to GRB14 and INSR. SRC and HSP90 promote its localization to the cell membrane. Its nuclear localization is dependent on its association with PTPN6 and its phosphorylation at Ser-396. Restricted to the nucleus in neuronal cells while in non-neuronal cells it is found in the cytoplasm. The Ser-241 phosphorylated form is distributed along the perinuclear region in neuronal cells while in non-neuronal cells it is found in both the nucleus and the cytoplasm. IGF1 transiently increases phosphorylation at Ser-241 of neuronal PDPK1, resulting in its translocation to other cellular compartments. The tyrosine-phosphorylated form colocalizes with PTK2B in focal adhesions after angiotensin II stimulation. |
| Modified Residue | MOD_RES 9; /note="Phosphotyrosine; by SRC and INSR"; /evidence="ECO:0000269|PubMed:11481331, ECO:0000269|PubMed:14585963, ECO:0000269|PubMed:16314505"; MOD_RES 25; /note="Phosphoserine"; /evidence="ECO:0000269|PubMed:10455013"; MOD_RES 241; /note="Phosphoserine; by autocatalysis"; /evidence="ECO:0000269|PubMed:10455013, ECO:0000269|PubMed:11481331, ECO:0000269|PubMed:15772071, ECO:0000269|PubMed:16780920, ECO:0000269|Ref.8"; MOD_RES 304; /note="N6-acetyllysine"; /evidence="ECO:0000250|UniProtKB:Q9Z2A0"; MOD_RES 354; /note="Phosphothreonine; by MELK"; /evidence="ECO:0000269|PubMed:22544756"; MOD_RES 373; /note="Phosphotyrosine; by SRC and INSR"; /evidence="ECO:0000269|PubMed:11481331, ECO:0000269|PubMed:14585963, ECO:0000269|PubMed:16314505"; MOD_RES 376; /note="Phosphotyrosine; by SRC and INSR"; /evidence="ECO:0000269|PubMed:11481331, ECO:0000269|PubMed:14585963, ECO:0000269|PubMed:16314505"; MOD_RES 393; /note="Phosphoserine"; /evidence="ECO:0000269|PubMed:10455013"; MOD_RES 394; /note="Phosphoserine; by MAP3K5"; /evidence="ECO:0000269|PubMed:22544756"; MOD_RES 396; /note="Phosphoserine"; /evidence="ECO:0000269|PubMed:10455013, ECO:0000269|PubMed:15743829"; MOD_RES 398; /note="Phosphoserine; by MAP3K5"; /evidence="ECO:0000269|PubMed:22544756"; MOD_RES 410; /note="Phosphoserine"; /evidence="ECO:0000269|PubMed:10455013"; MOD_RES 501; /note="Phosphoserine; by PKC/PRKCQ"; /evidence="ECO:0000250|UniProtKB:Q9Z2A0"; MOD_RES 513; /note="Phosphothreonine; by autocatalysis"; /evidence="ECO:0000269|PubMed:16780920"; MOD_RES 529; /note="Phosphoserine; by PKC/PRKCQ"; /evidence="ECO:0000250|UniProtKB:Q9Z2A0" |
| Post Translational Modification | PTM: Phosphorylation on Ser-241 in the activation loop is required for full activity. PDPK1 itself can autophosphorylate Ser-241, leading to its own activation. Autophosphorylation is inhibited by the apoptotic C-terminus cleavage product of PKN2 (By similarity). Tyr-9 phosphorylation is critical for stabilization of both PDPK1 and the PDPK1/SRC complex via HSP90-mediated protection of PDPK1 degradation. Angiotensin II stimulates the tyrosine phosphorylation of PDPK1 in vascular smooth muscle in a calcium- and SRC-dependent manner. Phosphorylated on Tyr-9, Tyr-373 and Tyr-376 by INSR in response to insulin. Palmitate negatively regulates autophosphorylation at Ser-241 and palmitate-induced phosphorylation at Ser-529 and Ser-501 by PKC/PRKCQ negatively regulates its ability to phosphorylate PKB/AKT1. Phosphorylation at Thr-354 by MELK partially inhibits kinase activity, the inhibition is cooperatively enhanced by phosphorylation at Ser-394 and Ser-398 by MAP3K5. {ECO:0000250, ECO:0000269|PubMed:10455013, ECO:0000269|PubMed:11481331, ECO:0000269|PubMed:14585963, ECO:0000269|PubMed:15743829, ECO:0000269|PubMed:16314505, ECO:0000269|PubMed:16780920, ECO:0000269|PubMed:22544756, ECO:0000269|Ref.8}.; PTM: Autophosphorylated; autophosphorylation is inhibited by the apoptotic C-terminus cleavage product of PKN2. {ECO:0000250}.; PTM: Monoubiquitinated in the kinase domain, deubiquitinated by USP4. |
| Signal Peptide | |
| Structure 3D | X-ray crystallography (69) |
| Cross Reference PDB | 1H1W; 1OKY; 1OKZ; 1UU3; 1UU7; 1UU8; 1UU9; 1UVR; 1W1D; 1W1G; 1W1H; 1Z5M; 2BIY; 2PE0; 2PE1; 2PE2; 2R7B; 2VKI; 2XCH; 2XCK; 3H9O; 3HRC; 3HRF; 3ION; 3IOP; 3NAX; 3NAY; 3NUN; 3NUS; 3NUU; 3NUY; 3ORX; 3ORZ; 3OTU; 3PWY; 3QC4; 3QCQ; 3QCS; 3QCX; 3QCY; 3QD0; 3QD3; 3QD4; 3RCJ; 3RWP; 3RWQ; 3SC1; 4A06; 4A07; 4AW0; 4AW1; 4CT1; 4CT2; 4RQK; 4RQV; 4RRV; 4XX9; 5ACK; 5HKM; 5HNG; 5HO7; 5HO8; 5LVL; 5LVM; 5LVN; 5LVO; 5LVP; 5MRD; 6WJQ; |
| Mapped Pubmed ID | - |
| Motif | |
| Gene Encoded By | |
| Mass | 63,152 |
| Kinetics | |
| Metal Binding | |
| Rhea ID | RHEA:17989; RHEA:46608 |
| Cross Reference Brenda | 2.7.11.1; |