Reviewed,
UniProtKB/Swiss-Prot P54265 (DMPK_MOUSE)
Last modified
July 22, 2008.
Version 72.
History...
Clusters with 100%,
90%,
50% identity |
Documents (3) |
Third-party data |
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Names and origin
| Protein names | Recommended name: Myotonin-protein kinase EC=2.7.11.1 Alternative name(s): Myotonic dystrophy protein kinase Short name=MDPK DM-kinase Short name=DMK DMPK MT-PK | ||||
| Gene names |
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| Organism | Mus musculus (Mouse) | ||||
| Taxonomic identifier | 10090 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Mus |
Protein attributes
| Sequence length | 631 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is not processed. |
| Protein existence | Evidence at transcript level. |
General annotation (Comments)
| Function | Critical to the modulation of cardiac contractility and to the maintenance of proper cardiac conduction activity. Phosphorylates phospholamban. |
| Catalytic activity | ATP + a protein = ADP + a phosphoprotein. |
| Cofactor | Magnesium By similarity. |
| Enzyme regulation | Activated in response to G protein second messengers. Maintained in an inactive conformation by the negative autoregulatory C-terminal coiled-coil region. Coiled-coil mediated oligomerization correlated with enhanced catalytic activity as is proteolytically cleavage near the C-terminus By similarity. |
| Tissue specificity | Expressed in all tissues examinated to date, with a predominance in brain, skeletal muscle, heart, and other tissues containing smooth muscle. Primarily detected in striated muscle structures of the 14.5 day embryo, including all major muscles in the skeletal structures, cardiac muscle, diaphragm, and the smooth muscle of the lung and gut. In the heart, expression is restricted to the cardiomyocytes in the ventricle and atrium. |
| Sequence similarities | Belongs to the protein kinase superfamily. AGC Ser/Thr protein kinase family. DMPK subfamily. Contains 1 AGC-kinase C-terminal domain. Contains 1 protein kinase domain. |
Ontologies
Alternative products
| This entry describes 10 isoforms produced by alternative splicing. [Align] [Select] Notes: Additional isoforms seem to exist. | |||||
| Isoform 1 (identifier: P54265-1) 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: P54265-2) The sequence of this isoform differs from the canonical sequence as follows: 328-356: Missing. | |||||
| Isoform 3 (identifier: P54265-3) The sequence of this isoform differs from the canonical sequence as follows: 378-382: Missing. | |||||
| Isoform 4 (identifier: P54265-4) The sequence of this isoform differs from the canonical sequence as follows: 378-382: Missing. 412-416: DNQVP → LKRPT 417-631: Missing. | |||||
| Isoform 5 (identifier: P54265-5) The sequence of this isoform differs from the canonical sequence as follows: 536-537: AI → DP 538-631: Missing. | |||||
| Isoform 6 (identifier: P54265-6) The sequence of this isoform differs from the canonical sequence as follows: 378-382: Missing. 536-537: AI → DP 538-631: Missing. | |||||
| Isoform 7 (identifier: P54265-7) The sequence of this isoform differs from the canonical sequence as follows: 536-557: AITGVPSPRATDPPSHLDGPPA → GESLTCFQPRGHWVEMGGMLGV 558-631: Missing. | |||||
| Isoform 8 (identifier: P54265-8) The sequence of this isoform differs from the canonical sequence as follows: 552-631: LDGPPAVAVG...WCFPGATFAP → MAPRPWLWAS...SREPPSPPEP | |||||
| Isoform 9 (identifier: P54265-9) The sequence of this isoform differs from the canonical sequence as follows: 378-382: Missing. 552-631: LDGPPAVAVG...WCFPGATFAP → MAPRPWLWAS...SREPPSPPEP | |||||
| Isoform 10 (identifier: P54265-10) The sequence of this isoform differs from the canonical sequence as follows: 552-562: LDGPPAVAVGQ → ASRQILPKGTP 563-631: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | ||||
Molecule processing | ||||||||
|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 631 | 631 | Myotonin-protein kinase | |||||
Regions | ||||||||
| Domain | 71 – 339 | 269 | Protein kinase | |||||
| Domain | 340 – 415 | 76 | AGC-kinase C-terminal | |||||
| Nucleotide binding | 77 – 85 | 9 | ATP By similarity | |||||
| Coiled coil | 464 – 532 | 69 | Potential | |||||
| Compositional bias | 597 – 604 | 8 | Poly-Ala | |||||
Sites | ||||||||
| Active site | 195 | 1 | Proton acceptor By similarity | |||||
| Binding site | 100 | 1 | ATP By similarity | |||||
Amino acid modifications | ||||||||
| Modified residue | 216 | 1 | Phosphoserine; by autocatalysis By similarity | |||||
| Modified residue | 228 | 1 | Phosphoserine; by autocatalysis By similarity | |||||
| Modified residue | 234 | 1 | Phosphothreonine; by autocatalysis By similarity | |||||
Natural variations | ||||||||
| Alternative sequence | 328 – 356 | 29 | Missing in isoform 2. | |||||
| Alternative sequence | 378 – 382 | 5 | Missing in isoform 3, isoform 4, isoform 6 and isoform 9. | |||||
| Alternative sequence | 412 – 416 | 5 | DNQVP → LKRPT in isoform 4. | |||||
| Alternative sequence | 417 – 631 | 215 | Missing in isoform 4. | |||||
| Alternative sequence | 536 – 557 | 22 | AITGV…DGPPA → GESLTCFQPRGHWVEMGGML GV in isoform 7. | |||||
| Alternative sequence | 536 – 537 | 2 | AI → DP in isoform 5 and isoform 6. | |||||
| Alternative sequence | 538 – 631 | 94 | Missing in isoform 5 and isoform 6. | |||||
| Alternative sequence | 552 – 631 | 80 | LDGPP…ATFAP → MAPRPWLWASARWWGQAPCT AVTCCSLPGSLGLAYPRRVA CSCSPLLWLLPPHWAALGWW PIPAVSPQSGVSREPPSPPE P in isoform 8 and isoform 9. | |||||
| Alternative sequence | 552 – 562 | 11 | LDGPPAVAVGQ → ASRQILPKGTP in isoform 10. | |||||
| Alternative sequence | 558 – 631 | 74 | Missing in isoform 7. | |||||
| Alternative sequence | 563 – 631 | 69 | Missing in isoform 10. | |||||
Sequences
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References
Cross-references
Sequence databases | |
|---|---|
| Z38015 Genomic DNA. Translation: CAA86113.1. Z21503 Z21506 Genomic DNA. Translation: CAA79715.1. S60313 mRNA. Translation: AAC60667.1. S60314 mRNA. Translation: AAC60666.1. S60315 mRNA. Translation: AAC60665.1. S60316 mRNA. Translation: AAC60664.1. | |
| PIR | I78393. I78394. I78395. I78396. S71829. |
| RefSeq | NP_115794.1. |
| UniGene | Mm.6529 |
3D structure databases | |
| HSSP | HSSP built from PDB template 1GZK based on UniProtKB P31751. |
| SMR | P54265. Positions 463-529. |
| ModBase | Search... |
Genome annotation databases | |
| Ensembl | ENSMUSG00000030409. Mus musculus. [Contig view] |
| GeneID | 13400. |
| KEGG | mmu:13400. |
Organism-specific databases | |
| MGI | MGI:94906. Dmpk. |
Phylogenomic databases | |
| HOGENOM | P54265. |
| HOVERGEN | P54265. |
Gene expression databases | |
| ArrayExpress | P54265. |
| CleanEx | MM_DMPK. |
| GermOnline | ENSMUSG00000030409. Mus musculus. |
Family and domain databases | |
| InterPro | IPR014930. DMPK_coil. IPR000961. Pkinase_C. IPR000719. Prot_kinase_core. IPR017441. Protein_kinase_ATP_bd_CS. IPR017442. Se/Thr_pkinase-rel. IPR008271. Ser_thr_pkin_AS. IPR002290. Ser_thr_pkinase. [Graphical view] |
| Pfam | PF08826. DMPK_coil. 1 hit. PF00069. Pkinase. 1 hit. PF00433. Pkinase_C. 1 hit. [Graphical view] |
| ProDom | PD000001. Prot_kinase. 1 hit. [Graphical view] [Entries sharing at least one domain] |
| SMART | SM00133. S_TK_X. 1 hit. SM00220. S_TKc. 1 hit. [Graphical view] |
| PROSITE | PS51285. AGC_KINASE_CTER. 1 hit. PS00107. PROTEIN_KINASE_ATP. 1 hit. PS50011. PROTEIN_KINASE_DOM. 1 hit. PS00108. PROTEIN_KINASE_ST. 1 hit. [Graphical view] |
| BLOCKS | Search... |
Other Resources | |
| SOURCE | Search... |
| ProtoNet | Search... |

Clusters with