Q8BWW9 (PKN2_MOUSE) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 99.
History...
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Serine/threonine-protein kinase N2 EC=2.7.11.13 Alternative name(s): PKN gamma Protein kinase C-like 2 Protein-kinase C-related kinase 2 | ||||
| Gene names |
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| Organism | Mus musculus (Mouse) [Reference proteome] | ||||
| Taxonomic identifier | 10090 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Mus › Mus![]() |
Protein attributes
| Sequence length | 983 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | PKC-related serine/threonine-protein kinase and Rho/Rac effector protein that participates in specific signal transduction responses in the cell. Plays a role in the regulation of cell cycle progression, actin cytoskeleton assembly, cell migration, cell adhesion, tumor cell invasion and transcription activation signaling processes. Phosphorylates CTTN in hyaluronan-induced astrocytes and hence decreases CTTN ability to associate with filamentous actin. Phosphorylates HDAC5, therefore lead to impair HDAC5 import. Direct RhoA target required for the regulation of the maturation of primordial junctions into apical junction formation in bronchial epithelial cells. Required for G2/M phases of the cell cycle progression and abscission during cytokinesis in a ECT2-dependent manner. Stimulates FYN kinase activity that is required for establishment of skin cell-cell adhesion during keratinocytes differentiation. Regulates epithelial bladder cells speed and direction of movement during cell migration and tumor cell invasion. Inhibits Akt pro-survival-induced kinase activity. Mediates Rho protein-induced transcriptional activation via the c-fos serum response factor (SRF). Ref.3 Ref.7 Ref.10 |
| Catalytic activity | ATP + a protein = ADP + a phosphoprotein. |
| Enzyme regulation | Kinase activity is activated upon binding to GTP-bound Rho1/Rac1 GTPases. Activated by caspase-3 (CASP3) cleavage during apoptosis. Activated by lipids, particularly cardiolipin and to a lesser extent by other acidic phospholipids and unsaturated fatty acids. Two specific sites, Thr-815 (activation loop of the kinase domain) and Thr-957 (turn motif), need to be phosphorylated for its full activation By similarity. Ref.7 |
| Subunit structure | Interacts with RHOA (GTP-bound form preferentially) and RAC1 (GTP-bound form preferentially); the interactions induce its autophosphorylation. Interacts (via C-terminal kinase domain) with PDPK1; the interaction stimulates PDPK1 kinase activity. Interacts (via C-terminus domain) with AKT1; the interaction occurs with the C-terminus cleavage product of PRK2 in apoptotic cells. Interacts (via C-terminus) with PTPN13 (via PDZ 3 domain). Interacts with NCK1, NCK2 and RHOC By similarity. Interacts (via the REM repeats) with RHOA (GTP-bound form preferentially). Interacts (via the REM repeats) with RAC1 (GTP-bound form preferentially). Interacts with NCK1 (via SH3 domains). Interacts with MAP3K2; the interaction activates PRK2 kinase activity in a MAP3K2-independent kinase activity. Interacts with CD44. Ref.3 Ref.5 Ref.7 Ref.10 |
| Subcellular location | Cytoplasm. Nucleus By similarity. Membrane. Cell projection › lamellipodium By similarity. Cytoplasm › cytoskeleton By similarity. Cleavage furrow By similarity. Midbody By similarity. Cell junction By similarity. Note: Colocalizes with PTPN13 in lamellipodia-like structures, regions of large actin turnover. Accumulates during telophase at the cleavage furrow and concentrates finally around the midbody in cytokinesis. Recruited to nascent cell-cell contacts at the apical surface of cells By similarity. Ref.4 |
| Tissue specificity | Ubiquitous. Highly expressed in liver and lung Expressed in astrocytes (at protein level). Ubiquitous. Ref.3 Ref.4 Ref.6 Ref.7 |
| Domain | The N-terminus region interferes with the interaction between AKT1 and the C-terminus region of PKN2 By similarity. The C1 domain does not bind the diacylglycerol (DAG). The apoptotic C-terminus cleavage product inhibits EGF-induced kinase activity of AKT1 phosphorylation at 'Thr-308' and 'Ser-473' sites, PDPK1 autophosphorylation and kinases PRKCD and PRKCZ phosphorylations By similarity. |
| Post-translational modification | Phosphorylated during mitosis By similarity. Autophosphorylated. Phosphorylated. Activated by limited proteolysis with trypsin By similarity. Proteolytically cleaved by caspase-3 during the induction of apoptotic cell death By similarity. |
| Sequence similarities | Belongs to the protein kinase superfamily. AGC Ser/Thr protein kinase family. PKC subfamily. Contains 1 AGC-kinase C-terminal domain. Contains 1 C2 domain. Contains 1 protein kinase domain. Contains 3 REM (Hr1) repeats. |
Ontologies
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q8BWW9-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: Q8BWW9-2) The sequence of this isoform differs from the canonical sequence as follows: 35-45: Missing. | ||||||
| Note: No experimental confirmation available. | ||||||
| Isoform 3 (identifier: Q8BWW9-3) The sequence of this isoform differs from the canonical sequence as follows: 781-787: DLKLDNL → NTIFSSI 788-983: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 983 | 983 | Serine/threonine-protein kinase N2 | PRO_0000055723 | |||||
Regions | |||||||||
| Repeat | 44 – 119 | 76 | REM 1 | ||||||
| Repeat | 133 – 213 | 81 | REM 2 | ||||||
| Repeat | 214 – 295 | 82 | REM 3 | ||||||
| Domain | 329 – 462 | 134 | C2 | ||||||
| Domain | 656 – 915 | 260 | Protein kinase | ||||||
| Domain | 916 – 983 | 68 | AGC-kinase C-terminal | ||||||
| Nucleotide binding | 662 – 670 | 9 | ATP By similarity | ||||||
| Region | 381 – 462 | 82 | Necessary to rescue apical junction formation | ||||||
| Region | 916 – 976 | 61 | Necessary for the catalytic activity By similarity | ||||||
| Region | 977 – 983 | 7 | Negatively regulates the responsiveness of the catalytic activity by cardiolipin and is required for optimal activation by the GTP-bound RhoA By similarity | ||||||
Sites | |||||||||
| Active site | 781 | 1 | Proton acceptor By similarity | ||||||
| Binding site | 685 | 1 | ATP By similarity | ||||||
| Site | 117 – 118 | 2 | Cleavage; by caspase-3 By similarity | ||||||
| Site | 699 – 700 | 2 | Cleavage; by caspase-3 By similarity | ||||||
Amino acid modifications | |||||||||
| Modified residue | 110 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 121 | 1 | Phosphothreonine By similarity | ||||||
| Modified residue | 124 | 1 | Phosphothreonine By similarity | ||||||
| Modified residue | 301 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 305 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 359 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 361 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 366 | 1 | Phosphoserine Ref.9 | ||||||
| Modified residue | 534 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 582 | 1 | Phosphoserine Ref.8 | ||||||
| Modified residue | 630 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 815 | 1 | Phosphothreonine; by PDPK1 By similarity | ||||||
| Modified residue | 957 | 1 | Phosphothreonine Probable | ||||||
Natural variations | |||||||||
| Alternative sequence | 35 – 45 | 11 | Missing in isoform 2. | VSP_012042 | |||||
| Alternative sequence | 781 – 787 | 7 | DLKLDNL → NTIFSSI in isoform 3. | VSP_042185 | |||||
| Alternative sequence | 788 – 983 | 196 | Missing in isoform 3. | VSP_042186 | |||||
Experimental info | |||||||||
| Mutagenesis | 66 | 1 | A → K: Inhibits interaction with RHOA, reduces localization at junctions and prevents apical junction formation; when associated with K-155. Ref.10 | ||||||
| Mutagenesis | 155 | 1 | A → K: Inhibits interaction with RHOA, reduces localization at junctions and prevents apical junction formation; when associated with K-60. Ref.10 | ||||||
| Mutagenesis | 685 | 1 | K → M: Prevents apical junction formation. Ref.10 | ||||||
| Mutagenesis | 781 | 1 | D → A: Prevents apical junction formation. Ref.10 | ||||||
| Sequence conflict | 32 | 1 | Q → H in BAC32655. Ref.1 | ||||||
| Sequence conflict | 84 | 1 | N → H in BAC33888. Ref.1 | ||||||
| Sequence conflict | 395 | 1 | V → D in BAC38910. Ref.1 | ||||||
| Sequence conflict | 569 | 1 | L → F in BAC32655. Ref.1 | ||||||
| Sequence conflict | 704 | 1 | E → K in BAC33888. Ref.1 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "The transcriptional landscape of the mammalian genome." Carninci P., Kasukawa T., Katayama S., Gough J., Frith M.C., Maeda N., Oyama R., Ravasi T., Lenhard B., Wells C., Kodzius R., Shimokawa K., Bajic V.B., Brenner S.E., Batalov S., Forrest A.R., Zavolan M., Davis M.J. Hayashizaki Y.Science 309:1559-1563(2005) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1 AND 3). Strain: C57BL/6J and NOD. Tissue: Corpora quadrigemina, Spinal cord and Testis. |
| [2] | "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] (ISOFORM 2). Strain: C57BL/6. Tissue: Brain. |
| [3] | "Isolation of a NCK-associated kinase, PRK2, an SH3-binding protein and potential effector of Rho protein signaling." Quilliam L.A., Lambert Q.T., Mickelson-Young L.A., Westwick J.K., Sparks A.B., Kay B.K., Jenkins N.A., Gilbert D.J., Copeland N.G., Der C.J. J. Biol. Chem. 271:28772-28776(1996) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, INTERACTION WITH NCK1, TISSUE SPECIFICITY. |
| [4] | "The PRK2 kinase is a potential effector target of both Rho and Rac GTPases and regulates actin cytoskeletal organization." Vincent S., Settleman J. Mol. Cell. Biol. 17:2247-2256(1997) [PubMed] [Europe PMC] [Abstract] Cited for: SUBCELLULAR LOCATION, TISSUE SPECIFICITY. |
| [5] | "MEK kinase 2 binds and activates protein kinase C-related kinase 2. Bifurcation of kinase regulatory pathways at the level of an MAPK kinase kinase." Sun W., Vincent S., Settleman J., Johnson G.L. J. Biol. Chem. 275:24421-24428(2000) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH MAP3K2. |
| [6] | "Fyn tyrosine kinase is a downstream mediator of Rho/PRK2 function in keratinocyte cell-cell adhesion." Calautti E., Grossi M., Mammucari C., Aoyama Y., Pirro M., Ono Y., Li J., Dotto G.P. J. Cell Biol. 156:137-148(2002) [PubMed] [Europe PMC] [Abstract] Cited for: TISSUE SPECIFICITY. |
| [7] | "Hyaluronan-CD44 interaction stimulates Rac1 signaling and PKN gamma kinase activation leading to cytoskeleton function and cell migration in astrocytes." Bourguignon L.Y., Gilad E., Peyrollier K., Brightman A., Swanson R.A. J. Neurochem. 101:1002-1017(2007) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION IN CELL MIGRATION, FUNCTION IN PHOSPHORYLATION OF CTTN, ENZYME REGULATION, INTERACTION WITH CD44 AND RAC1, TISSUE SPECIFICITY. |
| [8] | "Large-scale phosphorylation analysis of mouse liver." Villen J., Beausoleil S.A., Gerber S.A., Gygi S.P. Proc. Natl. Acad. Sci. U.S.A. 104:1488-1493(2007) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-582, MASS SPECTROMETRY. Tissue: Liver. |
| [9] | "The phagosomal proteome in interferon-gamma-activated macrophages." Trost M., English L., Lemieux S., Courcelles M., Desjardins M., Thibault P. Immunity 30:143-154(2009) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-366, MASS SPECTROMETRY. Tissue: Macrophage. |
| [10] | "The Rho target PRK2 regulates apical junction formation in human bronchial epithelial cells." Wallace S.W., Magalhaes A., Hall A. Mol. Cell. Biol. 31:81-91(2011) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, INTERACTION WITH RAC1 AND RHOA, MUTAGENESIS OF ALA-66; ALA-155; LYS-685 AND ASP-781. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AK046248 mRNA. Translation: BAC32655.1. AK133298 mRNA. Translation: BAE21599.1. AK171092 mRNA. Translation: BAE42244.1. AK049713 mRNA. Translation: BAC33888.1. AK083425 mRNA. Translation: BAC38910.1. BC052073 mRNA. Translation: AAH52073.1. |
| IPI | IPI00312414. IPI00480537. |
| RefSeq | NP_848769.2. NM_178654.4. |
| UniGene | Mm.244236. |
3D structure databases | |
| ProteinModelPortal | Q8BWW9. |
| SMR | Q8BWW9. Positions 56-107, 132-203, 613-979. |
| ModBase | Search... |
PTM databases | |
| PhosphoSite | Q8BWW9. |
Proteomic databases | |
| PaxDb | Q8BWW9. |
| PRIDE | Q8BWW9. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENSMUST00000043812; ENSMUSP00000039566; ENSMUSG00000004591. |
| GeneID | 109333. |
| KEGG | mmu:109333. |
Organism-specific databases | |
| CTD | 5586. |
| MGI | MGI:109211. Pkn2. |
Phylogenomic databases | |
| eggNOG | COG0515. |
| GeneTree | ENSGT00700000104096. |
| HOGENOM | HOG000233032. |
| HOVERGEN | HBG108317. |
| InParanoid | Q3TBR3. |
| KO | K06071. |
| OMA | WSALMDK. |
| OrthoDB | EOG40ZQWW. |
Gene expression databases | |
| ArrayExpress | Q8BWW9. |
| Bgee | Q8BWW9. |
| CleanEx | MM_PKN2. |
| Genevestigator | Q8BWW9. |
| GermOnline | ENSMUSG00000004591. Mus musculus. |
Family and domain databases | |
| Gene3D | 1.10.287.160. 3 hits. |
| InterPro | IPR000961. AGC-kinase_C. IPR000008. C2_Ca-dep. IPR008973. C2_Ca/lipid-bd_dom_CaLB. IPR011072. HR1_rho-bd. IPR011009. Kinase-like_dom. IPR017892. Pkinase_C. 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 | PF02185. HR1. 3 hits. PF00069. Pkinase. 1 hit. PF00433. Pkinase_C. 1 hit. [Graphical view] |
| SMART | SM00239. C2. 1 hit. SM00742. Hr1. 3 hits. SM00133. S_TK_X. 1 hit. SM00220. S_TKc. 1 hit. [Graphical view] |
| SUPFAM | SSF49562. C2_CaLB. 1 hit. SSF56112. Kinase_like. 1 hit. SSF46585. PKN_effector. 3 hits. |
| PROSITE | PS51285. AGC_KINASE_CTER. 1 hit. PS50004. C2. False negative. PS00107. PROTEIN_KINASE_ATP. 1 hit. PS50011. PROTEIN_KINASE_DOM. 1 hit. PS00108. PROTEIN_KINASE_ST. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other | |
| ChiTaRS | PKN2. mouse. |
| NextBio | 361929. |
| SOURCE | Search... |
Entry information
| Entry name | PKN2_MOUSE | ||||||||
| Accession | Primary (citable) accession number: Q8BWW9 Secondary accession number(s): Q3TBR3 Q8BL62 | ||||||||
| Entry history |
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| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
Relevant documents
| Human and mouse protein kinases Human and mouse protein kinases: classification and index |
| MGD cross-references Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
