Reviewed,
UniProtKB/Swiss-Prot Q13554 (KCC2B_HUMAN)
Last modified
October 13, 2009.
Version 103.
History...
Clusters with 100%,
90%,
50% identity |
Documents (7) |
Third-party data |
Customize display | text xml rdf/xml gff fasta |
Names and origin
| Protein names | Recommended name: Calcium/calmodulin-dependent protein kinase type II beta chain Short name=CaM-kinase II beta chain Short name=CaM kinase II subunit beta Short name=CaMK-II subunit beta EC=2.7.11.17 | ||||
| Gene names |
| ||||
| Organism | Homo sapiens (Human) [Complete proteome] | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
Protein attributes
| Sequence length | 664 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is not processed. |
| Protein existence | Evidence at protein level. |
General annotation (Comments)
| Function | CaM-kinase II (CAMK2) is a prominent kinase in the central nervous system that may function in long-term potentiation and neurotransmitter release. Member of the NMDAR signaling complex in excitatory synapses, it may regulate NMDAR-dependent potentiation of the AMPAR and synaptic plasticity By similarity. |
| Catalytic activity | ATP + a protein = ADP + a phosphoprotein. |
| Enzyme regulation | Autophosphorylation of CAMK2 plays an important role in the regulation of the kinase activity. |
| Subunit structure | CAMK2 is composed of four different chains: alpha, beta, gamma, and delta. The different isoforms assemble into homo- or heteromultimeric holoenzymes composed of 8 to 12 subunits. Interacts with SYNGAP1 and CAMK2N2 By similarity. Interacts with MPDZ. |
| Tissue specificity | Widely expressed. Expressed in adult and fetal brain. Expression is slightly lower in fetal brain. |
| Sequence similarities | Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. CaMK subfamily. Contains 1 protein kinase domain. |
Ontologies
| Keywords | |
|---|---|
| Coding sequence diversity | Alternative splicing Polymorphism |
| Ligand | ATP-binding Calmodulin-binding Nucleotide-binding |
| Molecular function | Kinase Serine/threonine-protein kinase Transferase |
| PTM | Phosphoprotein |
| Technical term | 3D-structure Complete proteome |
| Gene Ontology (GO) | |
| Biological process | protein amino acid phosphorylation Ref.8 Traceable author statement. Source: ProtInc signal transduction Ref.8Traceable author statement. Source: ProtInc |
| Cellular component | endocytic vesicle membrane Inferred from Experiment. Source: Reactome |
| Molecular function | ATP binding Inferred from electronic annotation. Source: UniProtKB-KW calmodulin bindingInferred from electronic annotation. Source: UniProtKB-KW calmodulin-dependent protein kinase activityInferred from electronic annotation. Source: EC |
| Complete GO annotation... | |
Alternative products
| This entry describes 7 isoforms produced by alternative splicing. [Align] [Select] Note: The variable region of the CAMK2B protein is encoded by at least 7 exons (V1 to V7). Alternative splicing within this region gives rise to CAMK2B isoforms. | ||||||
| Isoform 4 (identifier: Q13554-1) 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 1 (identifier: Q13554-2) Also known as: Beta; The sequence of this isoform differs from the canonical sequence as follows: 410-531: Missing. | ||||||
| Isoform 2 (identifier: Q13554-3) Also known as: Beta1; Beta'E; The sequence of this isoform differs from the canonical sequence as follows: 316-316: V → A 317-340: Missing. 379-393: Missing. 410-531: Missing. | ||||||
| Isoform 3 (identifier: Q13554-4) Also known as: Beta2; The sequence of this isoform differs from the canonical sequence as follows: 316-316: V → A 317-340: Missing. 354-392: Missing. 410-531: Missing. | ||||||
| Isoform 5 (identifier: Q13554-5) Also known as: Beta4; BetaE; The sequence of this isoform differs from the canonical sequence as follows: 316-316: V → A 317-340: Missing. 410-531: Missing. | ||||||
| Isoform 6 (identifier: Q13554-6) Also known as: Beta6; The sequence of this isoform differs from the canonical sequence as follows: 354-377: Missing. 410-531: Missing. 557-582: Missing. | ||||||
| Isoform 7 (identifier: Q13554-7) Also known as: Beta7; The sequence of this isoform differs from the canonical sequence as follows: 316-408: Missing. 410-531: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 664 | 664 | Calcium/calmodulin-dependent protein kinase type II beta chain | PRO_0000086096 | |||||
Regions | |||||||||
| Domain | 14 – 272 | 259 | Protein kinase | ||||||
| Nucleotide binding | 20 – 28 | 9 | ATP By similarity | ||||||
| Region | 291 – 301 | 11 | Calmodulin-binding | ||||||
Sites | |||||||||
| Active site | 136 | 1 | Proton acceptor By similarity | ||||||
| Binding site | 43 | 1 | ATP By similarity | ||||||
Amino acid modifications | |||||||||
| Modified residue | 17 | 1 | Phosphotyrosine By similarity | ||||||
| Modified residue | 287 | 1 | Phosphothreonine By similarity | ||||||
| Modified residue | 315 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 367 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 397 | 1 | Phosphoserine By similarity | ||||||
Natural variations | |||||||||
| Alternative sequence | 316 – 408 | 93 | Missing in isoform 7. | VSP_004772 | |||||
| Alternative sequence | 316 | 1 | V → A in isoform 2, isoform 3 and isoform 5. | VSP_004770 | |||||
| Alternative sequence | 317 – 340 | 24 | Missing in isoform 2, isoform 3 and isoform 5. | VSP_004771 | |||||
| Alternative sequence | 354 – 392 | 39 | Missing in isoform 3. | VSP_004774 | |||||
| Alternative sequence | 354 – 377 | 24 | Missing in isoform 6. | VSP_004773 | |||||
| Alternative sequence | 379 – 393 | 15 | Missing in isoform 2. | VSP_004775 | |||||
| Alternative sequence | 410 – 531 | 122 | Missing in isoform 1, isoform 2, isoform 3, isoform 5, isoform 6 and isoform 7. | VSP_004776 | |||||
| Alternative sequence | 557 – 582 | 26 | Missing in isoform 6. | VSP_004777 | |||||
| Natural variant | 488 | 1 | P → L in a colorectal adenocarcinoma sample; somatic mutation. Ref.11 | VAR_045581 | |||||
| Natural variant | 509 | 1 | E → K | VAR_045582 | |||||
Experimental info | |||||||||
| Sequence conflict | 68 | 1 | L → V in AAD03744. Ref.3 | ||||||
| Sequence conflict | 68 | 1 | L → V in AAD03743. Ref.3 | ||||||
| Sequence conflict | 533 | 1 | K → N in AAB16863. Ref.8 | ||||||
Sequences
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||
References
| « Hide 'large scale' references | |
| [1] | "Identification of alternative splicing variants of the beta subunit of human Ca(2+)/calmodulin-dependent protein kinase II with different activities." Wang P., Wu Y., Zhou T.H., Sun Y., Pei G. FEBS Lett. 475:107-110(2000) [PubMed: 10858498] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1; 2; 5; 6 AND 7). Tissue: Brain. |
| [2] | Leddy J.J., Salih M., Tuana B.S. Submitted (MAR-1995) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 4). Tissue: Skeletal muscle. |
| [3] | "Molecular cloning and sequencing of human calcium/calmodulin dependent protein kinase II beta subunit." Li G.Y., Cooper N.G.F. Submitted (DEC-1998) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1 AND 5). Tissue: Brain. |
| [4] | "Cloning and quantitative determination of the human Ca2+/calmodulin-dependent protein kinase II (CaMK II) isoforms in human beta cells." Rochlitz H., Voigt A., Lankat-Buttgereit B., Goeke B., Heimberg H., Nauck M.A., Schiemann U., Schatz H., Pfeiffer A.F. Diabetologia 43:465-473(2000) [PubMed: 10819240] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 2; 3 AND 5). Tissue: Insulinoma. |
| [5] | "Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. Sugano S.Nat. Genet. 36:40-45(2004) [PubMed: 14702039] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2). Tissue: Testis. |
| [6] | "Human chromosome 7: DNA sequence and biology." Scherer S.W., Cheung J., MacDonald J.R., Osborne L.R., Nakabayashi K., Herbrick J.-A., Carson A.R., Parker-Katiraee L., Skaug J., Khaja R., Zhang J., Hudek A.K., Li M., Haddad M., Duggan G.E., Fernandez B.A., Kanematsu E., Gentles S. Tsui L.-C.Science 300:767-772(2003) [PubMed: 12690205] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [7] | "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: 15489334] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2). Tissue: Lung. |
| [8] | "Identification of novel human tumor cell-specific CaMK-II variants." Tombes R.M., Krystal G.W. Biochim. Biophys. Acta 1355:281-292(1997) [PubMed: 9060999] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 302-603 (ISOFORM 2). |
| [9] | "SynGAP-MUPP1-CaMKII synaptic complexes regulate p38 MAP kinase activity and NMDA receptor-dependent synaptic AMPA receptor potentiation." Krapivinsky G., Medina I., Krapivinsky L., Gapon S., Clapham D.E. Neuron 43:563-574(2004) [PubMed: 15312654] [Abstract] Cited for: INTERACTION WITH MPDZ. |
| [10] | "Crystal structure of human calcium/calmodulin-dependent protein kinase IIb isoform 1 (CAMK2B)." Structural genomics consortium (SGC) Submitted (DEC-2007) to the PDB data bank Cited for: X-RAY CRYSTALLOGRAPHY (2.4 ANGSTROMS) OF 11-303. |
| [11] | "Patterns of somatic mutation in human cancer genomes." Greenman C., Stephens P., Smith R., Dalgliesh G.L., Hunter C., Bignell G., Davies H., Teague J., Butler A., Stevens C., Edkins S., O'Meara S., Vastrik I., Schmidt E.E., Avis T., Barthorpe S., Bhamra G., Buck G. Stratton M.R.Nature 446:153-158(2007) [PubMed: 17344846] [Abstract] Cited for: VARIANTS [LARGE SCALE ANALYSIS] LEU-488 AND LYS-509. |
| + | Additional computationally mapped references. |
Cross-references
Entry information
| Entry name | KCC2B_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q13554 Secondary accession number(s): A4D2K1 Q9Y6F4 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation project | HPI (Human Proteome Initiative) | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 7 Human chromosome 7: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| PDB cross-references Index of Protein Data Bank (PDB) cross-references |
| Human and mouse protein kinases Human and mouse protein kinases: classification and index |
| SIMILARITY comments Index of protein domains and families |

Clusters with


