Q01815 (CAC1C_MOUSE) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 132.
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: Voltage-dependent L-type calcium channel subunit alpha-1C Alternative name(s): Calcium channel, L type, alpha-1 polypeptide, isoform 1, cardiac muscle MELC-CC Mouse brain class C Short name=MBC Voltage-gated calcium channel subunit alpha Cav1.2 | ||||
| Gene names |
| ||||
| 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 | 2139 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1C gives rise to L-type calcium currents. Long-lasting (L-type) calcium channels belong to the 'high-voltage activated' (HVA) group. They are blocked by dihydropyridines (DHP), phenylalkylamines, benzothiazepines, and by omega-agatoxin-IIIA (omega-Aga-IIIA). They are however insensitive to omega-conotoxin-GVIA (omega-CTx-GVIA) and omega-agatoxin-IVA (omega-Aga-IVA). Calcium channels containing the alpha-1C subunit play an important role in excitation-contraction coupling in the heart. Binding of calmodulin or CABP1 at the same regulatory sites results in an opposit effects on the channel function By similarity. |
| Subunit structure | Voltage-dependent calcium channels are multisubunit complexes, consisting of alpha-1, alpha-2, beta and delta subunits in a 1:1:1:1 ratio. The channel activity is directed by the pore-forming and voltage-sensitive alpha-1 subunit. In many cases, this subunit is sufficient to generate voltage-sensitive calcium channel activity. The auxiliary subunits beta and alpha-2/delta linked by a disulfide bridge regulate the channel activity. Interacts (via C-terminal CDB motif) with CABP5; in a calcium-dependent manner. Interacts with CABP1 and CACNA2D4 By similarity. Ref.6 |
| Subcellular location | Membrane; Multi-pass membrane protein. Cell membrane By similarity. Note: The interaction between RRAD and CACNB2 regulates its trafficking to the cell membrane By similarity. |
| Tissue specificity | High expression in heart, followed by brain and spinal cord. Expressed in retina in rod bipolar cells. Ref.6 |
| Domain | Each of the four internal repeats contains five hydrophobic transmembrane segments (S1, S2, S3, S5, S6) and one positively charged transmembrane segment (S4). S4 segments probably represent the voltage-sensor and are characterized by a series of positively charged amino acids at every third position. Binding of intracellular calcium through the EF-hand motif inhibits the opening of the channel By similarity. |
| Post-translational modification | Phosphorylation by PKA activates the channel By similarity. |
| Sequence similarities | Belongs to the calcium channel alpha-1 subunit (TC 1.A.1.11) family. CACNA1C subfamily. [View classification] |
Ontologies
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] Note: Additional isoforms seem to exist. | ||||||
| Isoform 1 (identifier: Q01815-1) Also known as: CACH2A; 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: Q01815-2) Also known as: CACH2D; The sequence of this isoform differs from the canonical sequence as follows: 1277-1304: GYFSDPWNVFDFLIVIGSIIDVILSETN → HYFCDAWNTFDALIVVGSIVDIAITEVH 1305-1315: Missing. | ||||||
| Isoform 3 (identifier: Q01815-3) Also known as: Truncated; The sequence of this isoform differs from the canonical sequence as follows: 1-264: Missing. 372-391: MQDAMGYELPWVYFVSLVIF → VNDAVGRDWPWIYFVTLIII 464-464: M → RGAPAGLHDQKKGKFAWFSHSTETHV 932-951: Missing. 1305-1315: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 2139 | 2139 | Voltage-dependent L-type calcium channel subunit alpha-1C | PRO_0000053929 | |||||
Regions | |||||||||
| Topological domain | 1 – 124 | 124 | Cytoplasmic Potential | ||||||
| Transmembrane | 125 – 143 | 19 | Helical; Name=S1 of repeat I; Potential | ||||||
| Topological domain | 144 – 160 | 17 | Extracellular Potential | ||||||
| Transmembrane | 161 – 181 | 21 | Helical; Name=S2 of repeat I; Potential | ||||||
| Topological domain | 182 – 193 | 12 | Cytoplasmic Potential | ||||||
| Transmembrane | 194 – 212 | 19 | Helical; Name=S3 of repeat I; Potential | ||||||
| Topological domain | 213 – 232 | 20 | Extracellular Potential | ||||||
| Transmembrane | 233 – 251 | 19 | Helical; Name=S4 of repeat I; Potential | ||||||
| Topological domain | 252 – 270 | 19 | Cytoplasmic Potential | ||||||
| Transmembrane | 271 – 290 | 20 | Helical; Name=S5 of repeat I; Potential | ||||||
| Topological domain | 291 – 380 | 90 | Extracellular Potential | ||||||
| Transmembrane | 381 – 405 | 25 | Helical; Name=S6 of repeat I; Potential | ||||||
| Topological domain | 406 – 524 | 119 | Cytoplasmic Potential | ||||||
| Transmembrane | 525 – 543 | 19 | Helical; Name=S1 of repeat II; Potential | ||||||
| Topological domain | 544 – 558 | 15 | Extracellular Potential | ||||||
| Transmembrane | 559 – 578 | 20 | Helical; Name=S2 of repeat II; Potential | ||||||
| Topological domain | 579 – 586 | 8 | Cytoplasmic Potential | ||||||
| Transmembrane | 587 – 605 | 19 | Helical; Name=S3 of repeat II; Potential | ||||||
| Topological domain | 606 – 615 | 10 | Extracellular Potential | ||||||
| Transmembrane | 616 – 634 | 19 | Helical; Name=S4 of repeat II; Potential | ||||||
| Topological domain | 635 – 653 | 19 | Cytoplasmic Potential | ||||||
| Transmembrane | 654 – 673 | 20 | Helical; Name=S5 of repeat II; Potential | ||||||
| Topological domain | 674 – 728 | 55 | Extracellular Potential | ||||||
| Transmembrane | 729 – 753 | 25 | Helical; Name=S6 of repeat II; Potential | ||||||
| Topological domain | 754 – 900 | 147 | Cytoplasmic Potential | ||||||
| Transmembrane | 901 – 919 | 19 | Helical; Name=S1 of repeat III; Potential | ||||||
| Topological domain | 920 – 935 | 16 | Extracellular Potential | ||||||
| Transmembrane | 936 – 955 | 20 | Helical; Name=S2 of repeat III; Potential | ||||||
| Topological domain | 956 – 967 | 12 | Cytoplasmic Potential | ||||||
| Transmembrane | 968 – 986 | 19 | Helical; Name=S3 of repeat III; Potential | ||||||
| Topological domain | 987 – 993 | 7 | Extracellular Potential | ||||||
| Transmembrane | 994 – 1012 | 19 | Helical; Name=S4 of repeat III; Potential | ||||||
| Topological domain | 1013 – 1031 | 19 | Cytoplasmic Potential | ||||||
| Transmembrane | 1032 – 1051 | 20 | Helical; Name=S5 of repeat III; Potential | ||||||
| Topological domain | 1052 – 1141 | 90 | Extracellular Potential | ||||||
| Transmembrane | 1142 – 1166 | 25 | Helical; Name=S6 of repeat III; Potential | ||||||
| Topological domain | 1167 – 1219 | 53 | Cytoplasmic Potential | ||||||
| Transmembrane | 1220 – 1238 | 19 | Helical; Name=S1 of repeat IV; Potential | ||||||
| Topological domain | 1239 – 1253 | 15 | Extracellular Potential | ||||||
| Transmembrane | 1254 – 1273 | 20 | Helical; Name=S2 of repeat IV; Potential | ||||||
| Topological domain | 1274 – 1281 | 8 | Cytoplasmic Potential | ||||||
| Transmembrane | 1282 – 1300 | 19 | Helical; Name=S3 of repeat IV; Potential | ||||||
| Topological domain | 1301 – 1324 | 24 | Extracellular Potential | ||||||
| Transmembrane | 1325 – 1343 | 19 | Helical; Name=S4 of repeat IV; Potential | ||||||
| Topological domain | 1344 – 1362 | 19 | Cytoplasmic Potential | ||||||
| Transmembrane | 1363 – 1382 | 20 | Helical; Name=S5 of repeat IV; Potential | ||||||
| Topological domain | 1383 – 1451 | 69 | Extracellular Potential | ||||||
| Transmembrane | 1452 – 1476 | 25 | Helical; Name=S6 of repeat IV; Potential | ||||||
| Topological domain | 1477 – 2139 | 663 | Cytoplasmic Potential | ||||||
| Repeat | 111 – 408 | 298 | I | ||||||
| Repeat | 510 – 756 | 247 | II | ||||||
| Repeat | 887 – 1169 | 283 | III | ||||||
| Repeat | 1206 – 1479 | 274 | IV | ||||||
| Calcium binding | 1505 – 1516 | 12 | By similarity | ||||||
| Region | 428 – 445 | 18 | Binding to the beta subunit By similarity | ||||||
| Compositional bias | 654 – 660 | 7 | Poly-Leu | ||||||
| Compositional bias | 768 – 774 | 7 | Poly-Glu | ||||||
| Compositional bias | 1147 – 1153 | 7 | Poly-Ile | ||||||
Sites | |||||||||
| Site | 363 | 1 | Calcium ion selectivity and permeability By similarity | ||||||
| Site | 706 | 1 | Calcium ion selectivity and permeability By similarity | ||||||
| Site | 1115 | 1 | Calcium ion selectivity and permeability By similarity | ||||||
| Site | 1416 | 1 | Calcium ion selectivity and permeability By similarity | ||||||
Amino acid modifications | |||||||||
| Modified residue | 815 | 1 | Phosphoserine Ref.5 | ||||||
| Modified residue | 1487 | 1 | Phosphoserine; by PKA Potential | ||||||
| Modified residue | 1889 | 1 | Phosphoserine; by PKA Potential | ||||||
| Modified residue | 1897 | 1 | Phosphoserine; by PKA Potential | ||||||
| Glycosylation | 153 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 328 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 1388 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 1439 | 1 | N-linked (GlcNAc...) Potential | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 264 | 264 | Missing in isoform 3. | VSP_000896 | |||||
| Alternative sequence | 372 – 391 | 20 | MQDAM…SLVIF → VNDAVGRDWPWIYFVTLIII in isoform 3. | VSP_000897 | |||||
| Alternative sequence | 464 | 1 | M → RGAPAGLHDQKKGKFAWFSH STETHV in isoform 3. | VSP_000898 | |||||
| Alternative sequence | 932 – 951 | 20 | Missing in isoform 3. | VSP_000899 | |||||
| Alternative sequence | 1277 – 1304 | 28 | GYFSD…LSETN → HYFCDAWNTFDALIVVGSIV DIAITEVH in isoform 2. | VSP_000900 | |||||
| Alternative sequence | 1305 – 1315 | 11 | Missing in isoform 2 and isoform 3. | VSP_000901 | |||||
Experimental info | |||||||||
| Sequence conflict | 310 | 1 | E → K in AAA62612. Ref.4 | ||||||
| Sequence conflict | 477 | 1 | E → D in AAA62612. Ref.4 | ||||||
| Sequence conflict | 555 | 1 | V → D in AAA62612. Ref.4 | ||||||
| Sequence conflict | 811 – 812 | 2 | AD → GS in AAA62612. Ref.4 | ||||||
| Sequence conflict | 822 | 1 | N → H in AAA62612. Ref.4 | ||||||
| Sequence conflict | 825 | 1 | D → A in AAA62612. Ref.4 | ||||||
| Sequence conflict | 831 | 1 | N → P in AAA62612. Ref.4 | ||||||
| Sequence conflict | 837 – 841 | 5 | HSNPD → TPTQT in AAA37351. Ref.3 | ||||||
| Sequence conflict | 934 – 938 | 5 | GNADY → FYFDI in AAA37351. Ref.3 | ||||||
| Sequence conflict | 942 | 1 | S → T in AAA37351. Ref.3 | ||||||
| Sequence conflict | 946 | 1 | L → I in AAA37351. Ref.3 | ||||||
| Sequence conflict | 949 | 1 | I → A in AAA37351. Ref.3 | ||||||
| Sequence conflict | 977 – 978 | 2 | VS → LC in AAA62612. Ref.4 | ||||||
| Sequence conflict | 1065 | 1 | T → A in AAA62612. Ref.4 | ||||||
| Sequence conflict | 1507 | 1 | E → K in AAA62612. Ref.4 | ||||||
| Sequence conflict | 1525 | 1 | Q → H in AAA62612. Ref.4 | ||||||
| Sequence conflict | 1633 | 1 | K → E in AAA62612. Ref.4 | ||||||
| Sequence conflict | 1959 | 1 | G → A in AAA62612. Ref.4 | ||||||
| Sequence conflict | 1963 – 1964 | 2 | RP → ST in AAA62612. Ref.4 | ||||||
| Sequence conflict | 1970 | 1 | T → H in AAA62612. Ref.4 | ||||||
| Sequence conflict | 1974 | 1 | E → K in AAA62612. Ref.4 | ||||||
| Sequence conflict | 2086 | 1 | A → R in AAA62612. Ref.4 | ||||||
| Sequence conflict | 2097 | 1 | F → L in AAA62612. Ref.4 | ||||||
| Sequence conflict | 2110 | 1 | A → V in AAA62612. Ref.4 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Expression of a cDNA for a neuronal calcium channel alpha1 subunit enhances secretion from adrenal chromaffin cells." Ma W.-J., Holz R.W., Uhler M.D. J. Biol. Chem. 267:22728-22732(1992) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], ALTERNATIVE SPLICING. Tissue: Brain. |
| [2] | "Molecular diversity of L-type calcium channels. Evidence for alternative splicing of the transcripts of three non-allelic genes." Perez-Reyes E., Wei X., Castellano A., Birnbaumer L. J. Biol. Chem. 265:20430-20436(1990) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 1162-1455 (ISOFORMS 1 AND 2). Strain: ICR. Tissue: Ovary. |
| [3] | Chaudhari N. Submitted (JAN-1993) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 762-1070. |
| [4] | "Cloning and expression of a novel truncated calcium channel from non-excitable cells." Ma Y., Kobrinsky E., Marks A.R. J. Biol. Chem. 270:483-493(1995) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 265-2139 (ISOFORM 3). Strain: DBA/2J. Tissue: Erythroleukemia. |
| [5] | "Qualitative and quantitative analyses of protein phosphorylation in naive and stimulated mouse synaptosomal preparations." Munton R.P., Tweedie-Cullen R., Livingstone-Zatchej M., Weinandy F., Waidelich M., Longo D., Gehrig P., Potthast F., Rutishauser D., Gerrits B., Panse C., Schlapbach R., Mansuy I.M. Mol. Cell. Proteomics 6:283-293(2007) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-815, MASS SPECTROMETRY. Tissue: Brain cortex. |
| [6] | "Characterization of Ca2+-binding protein 5 knockout mouse retina." Rieke F., Lee A., Haeseleer F. Invest. Ophthalmol. Vis. Sci. 49:5126-5135(2008) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH CABP5, TISSUE SPECIFICITY. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | L01776 mRNA. Translation: AAB59633.1. M57973 mRNA. Translation: AAA63291.1. L06233 mRNA. Translation: AAA37351.1. U17869 mRNA. Translation: AAA62612.1. |
| IPI | IPI00229513. IPI00277044. IPI00875159. |
| PIR | A44467. |
| RefSeq | NP_001153005.1. NM_001159533.1. |
| UniGene | Mm.436656. |
3D structure databases | |
| ProteinModelPortal | Q01815. |
| SMR | Q01815. Positions 162-404, 419-447, 519-754, 891-1165, 1208-1477, 1560-1640. |
| ModBase | Search... |
Protein-protein interaction databases | |
| IntAct | Q01815. 2 interactions. |
| MINT | MINT-103522. |
Protein family/group databases | |
| TCDB | 1.A.1.11.6. voltage-gated ion channel (VIC) superfamily. |
PTM databases | |
| PhosphoSite | Q01815. |
Proteomic databases | |
| PaxDb | Q01815. |
| PRIDE | Q01815. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENSMUST00000112825; ENSMUSP00000108444; ENSMUSG00000051331. |
| GeneID | 12288. |
| KEGG | mmu:12288. |
| UCSC | uc009dls.2. mouse. uc012erl.1. mouse. |
Organism-specific databases | |
| CTD | 775. |
| MGI | MGI:103013. Cacna1c. |
Phylogenomic databases | |
| eggNOG | COG1226. |
| GeneTree | ENSGT00680000099727. |
| HOGENOM | HOG000231529. |
| HOVERGEN | HBG050763. |
| KO | K04850. |
Enzyme and pathway databases | |
| Reactome | REACT_127416. Developmental Biology. |
Gene expression databases | |
| ArrayExpress | Q01815. |
| Bgee | Q01815. |
| Genevestigator | Q01815. |
| GermOnline | ENSMUSG00000051331. Mus musculus. |
Family and domain databases | |
| InterPro | IPR005821. Ion_trans_dom. IPR014873. VDCC_a1su_IQ. IPR005451. VDCC_L_a1csu. IPR005446. VDCC_L_a1su. IPR002077. VDCCAlpha1. [Graphical view] |
| PANTHER | PTHR10037:SF47. PTHR10037:SF47. 1 hit. |
| Pfam | PF08763. Ca_chan_IQ. 1 hit. PF00520. Ion_trans. 4 hits. [Graphical view] |
| PRINTS | PR00167. CACHANNEL. PR01630. LVDCCALPHA1. PR01635. LVDCCALPHA1C. |
| SMART | SM01062. Ca_chan_IQ. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other | |
| BindingDB | Q01815. |
| ChEMBL | CHEMBL2529. |
| ChiTaRS | CACNA1C. mouse. |
| NextBio | 280766. |
| SOURCE | Search... |
Entry information
| Entry name | CAC1C_MOUSE | ||||||||
| Accession | Primary (citable) accession number: Q01815 Secondary accession number(s): Q04476, Q61242, Q99242 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
Relevant documents
| MGD cross-references Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
