Q66H84 (MAPK3_RAT) Reviewed, UniProtKB/Swiss-Prot
Last modified
April 3, 2013.
Version 79.
History...
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: MAP kinase-activated protein kinase 3 Short name=MAPK-activated protein kinase 3 Short name=MAPKAP kinase 3 Short name=MAPKAP-K3 Short name=MAPKAPK-3 Short name=MK-3 EC=2.7.11.1 | ||
| Gene names |
| ||
| Organism | Rattus norvegicus (Rat) [Reference proteome] | ||
| Taxonomic identifier | 10116 [NCBI] | ||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Rattus![]() |
Protein attributes
| Sequence length | 384 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at transcript level |
General annotation (Comments)
| Function | Stress-activated serine/threonine-protein kinase involved in cytokines production, endocytosis, cell migration, chromatin remodeling and transcriptional regulation. Following stress, it is phosphorylated and activated by MAP kinase p38-alpha/MAPK14, leading to phosphorylation of substrates. Phosphorylates serine in the peptide sequence, Hyd-X-R-X(2)-S, where Hyd is a large hydrophobic residue. MAPKAPK2 and MAPKAPK3, share the same function and substrate specificity, but MAPKAPK3 kinase activity and level in protein expression are lower compared to MAPKAPK2. Phosphorylates HSP27/HSPB1, KRT18, KRT20, RCSD1, RPS6KA3, TAB3 and TTP/ZFP36. Mediates phosphorylation of HSP27/HSPB1 in response to stress, leading to dissociate HSP27/HSPB1 from large small heat-shock protein (sHsps) oligomers and impair their chaperone activities and ability to protect against oxidative stress effectively. Involved in inflammatory response by regulating tumor necrosis factor (TNF) and IL6 production post-transcriptionally: acts by phosphorylating AU-rich elements (AREs)-binding proteins, such as TTP/ZFP36, leading to regulate the stability and translation of TNF and IL6 mRNAs. Phosphorylation of TTP/ZFP36, a major post-transcriptional regulator of TNF, promotes its binding to 14-3-3 proteins and reduces its ARE mRNA affinity leading to inhibition of dependent degradation of ARE-containing transcript. Involved in toll-like receptor signaling pathway (TLR) in dendritic cells: required for acute TLR-induced macropinocytosis by phosphorylating and activating RPS6KA3. Also acts as a modulator of Polycomb-mediated repression By similarity. |
| Catalytic activity | ATP + a protein = ADP + a phosphoprotein. |
| Enzyme regulation | Activated following phosphorylation by p38-alpha/MAPK14 following various stresses. Inhibited by ligand 5B (2'-[2-(1,3-benzodioxol-5-yl)pyrimidin-4-yl]-5',6'-dihydrospiro[piperidine-4,7'-pyrrolo[3,2-c]pyridin]- 4'(1'h)-one) and ligand P4O (2-[2-(2-fluorophenyl)pyridin-4-yl]-1,5,6,7-tetrahydro- 4h-pyrrolo[3,2-c]pyridin-4-one), 2 ATP-competitive inhibitors By similarity. |
| Subunit structure | Heterodimer with p38-alpha/MAPK14. The heterodimer with p38-alpha/MAPK14 forms a stable complex: molecules are positioned 'face to face' so that the ATP-binding sites of both kinases are at the heterodimer interface. Interacts with TCF3 and with polycomb proteins, such as PCH2 and BMI1/PCGF4 By similarity. |
| Subcellular location | Nucleus By similarity. Cytoplasm By similarity. Note: Predominantly located in the nucleus, when activated it translocates to the cytoplasm By similarity. |
| Post-translational modification | Phosphorylated and activated by MAPK1/ERK2 and MAPK3/ERK1 By similarity. Phosphorylated and activated by MAP kinase p38-alpha/MAPK14 at Thr-203, Ser-253 and Thr-315 By similarity. |
| Sequence similarities | Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. Contains 1 protein kinase domain. |
Ontologies
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 384 | 384 | MAP kinase-activated protein kinase 3 | PRO_0000086295 | |||||
Regions | |||||||||
| Domain | 46 – 306 | 261 | Protein kinase | ||||||
| Nucleotide binding | 52 – 60 | 9 | ATP By similarity | ||||||
| Region | 309 – 345 | 37 | Autoinhibitory helix By similarity | ||||||
| Region | 347 – 371 | 25 | p38 MAPK-binding site By similarity | ||||||
| Motif | 337 – 346 | 10 | Nuclear export signal (NES) By similarity | ||||||
| Motif | 352 – 355 | 4 | Bipartite nuclear localization signal 1 By similarity | ||||||
| Motif | 366 – 370 | 5 | Bipartite nuclear localization signal 2 By similarity | ||||||
Sites | |||||||||
| Active site | 168 | 1 | Proton acceptor By similarity | ||||||
| Binding site | 75 | 1 | ATP By similarity | ||||||
Amino acid modifications | |||||||||
| Modified residue | 203 | 1 | Phosphothreonine; by MAPK14 By similarity | ||||||
| Modified residue | 253 | 1 | Phosphoserine; by MAPK14 By similarity | ||||||
| Modified residue | 309 | 1 | Phosphoserine; by autocatalysis By similarity | ||||||
| Modified residue | 315 | 1 | Phosphothreonine; by MAPK14 By similarity | ||||||
Sequences
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References
| [1] | "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Kidney. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | BC081974 mRNA. Translation: AAH81974.1. |
| IPI | IPI00471813. |
| RefSeq | NP_001012127.1. NM_001012127.1. |
| UniGene | Rn.8789. |
3D structure databases | |
| ProteinModelPortal | Q66H84. |
| SMR | Q66H84. Positions 37-370. |
| ModBase | Search... |
Protein-protein interaction databases | |
| STRING | 10116.ENSRNOP00000020065. |
PTM databases | |
| PhosphoSite | Q66H84. |
Proteomic databases | |
| PaxDb | Q66H84. |
| PRIDE | Q66H84. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENSRNOT00000020065; ENSRNOP00000020065; ENSRNOG00000014832. |
| GeneID | 315994. |
| KEGG | rno:315994. |
| UCSC | RGD:1304980. rat. |
Organism-specific databases | |
| CTD | 7867. |
| RGD | 1304980. Mapkapk3. |
Phylogenomic databases | |
| eggNOG | COG0515. |
| GeneTree | ENSGT00550000074510. |
| HOGENOM | HOG000233031. |
| HOVERGEN | HBG106948. |
| InParanoid | Q66H84. |
| KO | K04444. |
| OMA | IRMGQYG. |
| OrthoDB | EOG4HQDJP. |
Gene expression databases | |
| ArrayExpress | Q66H84. |
| Genevestigator | Q66H84. |
| GermOnline | ENSRNOG00000014832. Rattus norvegicus. |
Family and domain databases | |
| InterPro | IPR011009. Kinase-like_dom. IPR000719. Prot_kinase_cat_dom. IPR017441. Protein_kinase_ATP_BS. IPR002290. Ser/Thr_dual-sp_kinase_dom. IPR008271. Ser/Thr_kinase_AS. [Graphical view] |
| Pfam | PF00069. Pkinase. 1 hit. [Graphical view] |
| SMART | SM00220. S_TKc. 1 hit. [Graphical view] |
| SUPFAM | SSF56112. Kinase_like. 1 hit. |
| PROSITE | PS00107. PROTEIN_KINASE_ATP. 1 hit. PS50011. PROTEIN_KINASE_DOM. 1 hit. PS00108. PROTEIN_KINASE_ST. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other | |
| NextBio | 670215. |
Entry information
| Entry name | MAPK3_RAT | ||||||||
| Accession | Primary (citable) accession number: Q66H84 | ||||||||
| Entry history |
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| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
Relevant documents
| SIMILARITY comments Index of protein domains and families |

Clusters with
