Q01668 (CAC1D_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 134.
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-1D Alternative name(s): Calcium channel, L type, alpha-1 polypeptide, isoform 2 Voltage-gated calcium channel subunit alpha Cav1.3 | ||||
| Gene names |
| ||||
| Organism | Homo sapiens (Human) [Reference 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 | 2161 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-1D 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). |
| 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 IQ domain) with CABP1 and CABP4 in a calcium independent manner By similarity. Interacts with RIMBP2 By similarity. |
| Subcellular location | |
| Tissue specificity | Expressed in pancreatic islets and in brain, where it has been seen in cerebral cortex, hippocampus, basal ganglia, habenula and thalamus. Expressed in the small cell lung carcinoma cell line SCC-9. No expression in skeletal muscle. Ref.4 |
| 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. |
| Polymorphism | A change from seven to eight ATG trinucleotide repeats, resulting in an additional N-terminal methionine, has been found in a patient with non-insulin-dependent diabetes mellitus (NIDDM). |
| Involvement in disease | Sinoatrial node dysfunction and deafness (SANDD) [MIM:614896]: A disease characterized by congenital severe to profound deafness without vestibular dysfunction, associated with episodic syncope due to intermittent pronounced bradycardia. |
| Sequence similarities | Belongs to the calcium channel alpha-1 subunit (TC 1.A.1.11) family. CACNA1D subfamily. [View classification] |
Ontologies
Alternative products
| This entry describes 2 isoforms produced by alternative splicing. [Align] [Select] Note: Additional isoforms seem to exist. | ||||||
| Isoform Neuronal-type (identifier: Q01668-1) 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 Beta-cell-type (identifier: Q01668-2) The sequence of this isoform differs from the canonical sequence as follows: 373-392: MNDAMGFELPWVYFVSLVIF → VNDAIGWEWPWVYFVSLIIL 493-493: C → WCWWRRRGAAKAGPSGCRRWG |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 2161 | 2161 | Voltage-dependent L-type calcium channel subunit alpha-1D | PRO_0000053933 | |||||
Regions | |||||||||
| Topological domain | 1 – 126 | 126 | Cytoplasmic Potential | ||||||
| Transmembrane | 127 – 145 | 19 | Helical; Name=S1 of repeat I; Potential | ||||||
| Topological domain | 146 – 163 | 18 | Extracellular Potential | ||||||
| Transmembrane | 164 – 183 | 20 | Helical; Name=S2 of repeat I; Potential | ||||||
| Topological domain | 184 – 195 | 12 | Cytoplasmic Potential | ||||||
| Transmembrane | 196 – 214 | 19 | Helical; Name=S3 of repeat I; Potential | ||||||
| Topological domain | 215 – 235 | 21 | Extracellular Potential | ||||||
| Transmembrane | 236 – 254 | 19 | Helical; Name=S4 of repeat I; Potential | ||||||
| Topological domain | 255 – 273 | 19 | Cytoplasmic Potential | ||||||
| Transmembrane | 274 – 293 | 20 | Helical; Name=S5 of repeat I; Potential | ||||||
| Topological domain | 294 – 381 | 88 | Extracellular Potential | ||||||
| Transmembrane | 382 – 406 | 25 | Helical; Name=S6 of repeat I; Potential | ||||||
| Topological domain | 407 – 523 | 117 | Cytoplasmic Potential | ||||||
| Transmembrane | 524 – 543 | 20 | Helical; Name=S1 of repeat II; Potential | ||||||
| Topological domain | 544 – 558 | 15 | Extracellular Potential | ||||||
| Transmembrane | 559 – 577 | 19 | Helical; Name=S2 of repeat II; Potential | ||||||
| Topological domain | 578 – 585 | 8 | Cytoplasmic Potential | ||||||
| Transmembrane | 586 – 604 | 19 | Helical; Name=S3 of repeat II; Potential | ||||||
| Topological domain | 605 – 614 | 10 | Extracellular Potential | ||||||
| Transmembrane | 615 – 633 | 19 | Helical; Name=S4 of repeat II; Potential | ||||||
| Topological domain | 634 – 652 | 19 | Cytoplasmic Potential | ||||||
| Transmembrane | 653 – 673 | 21 | Helical; Name=S5 of repeat II; Potential | ||||||
| Topological domain | 674 – 727 | 54 | Extracellular Potential | ||||||
| Transmembrane | 728 – 752 | 25 | Helical; Name=S6 of repeat II; Potential | ||||||
| Topological domain | 753 – 886 | 134 | Cytoplasmic Potential | ||||||
| Transmembrane | 887 – 905 | 19 | Helical; Name=S1 of repeat III; Potential | ||||||
| Topological domain | 906 – 921 | 16 | Extracellular Potential | ||||||
| Transmembrane | 922 – 941 | 20 | Helical; Name=S2 of repeat III; Potential | ||||||
| Topological domain | 942 – 953 | 12 | Cytoplasmic Potential | ||||||
| Transmembrane | 954 – 972 | 19 | Helical; Name=S3 of repeat III; Potential | ||||||
| Topological domain | 973 – 978 | 6 | Extracellular Potential | ||||||
| Transmembrane | 979 – 998 | 20 | Helical; Name=S4 of repeat III; Potential | ||||||
| Topological domain | 999 – 1017 | 19 | Cytoplasmic Potential | ||||||
| Transmembrane | 1018 – 1037 | 20 | Helical; Name=S5 of repeat III; Potential | ||||||
| Topological domain | 1038 – 1127 | 90 | Extracellular Potential | ||||||
| Transmembrane | 1128 – 1148 | 21 | Helical; Name=S6 of repeat III; Potential | ||||||
| Topological domain | 1149 – 1205 | 57 | Cytoplasmic Potential | ||||||
| Transmembrane | 1206 – 1224 | 19 | Helical; Name=S1 of repeat IV; Potential | ||||||
| Topological domain | 1225 – 1239 | 15 | Extracellular Potential | ||||||
| Transmembrane | 1240 – 1259 | 20 | Helical; Name=S2 of repeat IV; Potential | ||||||
| Topological domain | 1260 – 1266 | 7 | Cytoplasmic Potential | ||||||
| Transmembrane | 1267 – 1288 | 22 | Helical; Name=S3 of repeat IV; Potential | ||||||
| Topological domain | 1289 – 1313 | 25 | Extracellular Potential | ||||||
| Transmembrane | 1314 – 1333 | 20 | Helical; Name=S4 of repeat IV; Potential | ||||||
| Topological domain | 1334 – 1352 | 19 | Cytoplasmic Potential | ||||||
| Transmembrane | 1353 – 1372 | 20 | Helical; Name=S5 of repeat IV; Potential | ||||||
| Topological domain | 1373 – 1439 | 67 | Extracellular Potential | ||||||
| Transmembrane | 1440 – 1464 | 25 | Helical; Name=S6 of repeat IV; Potential | ||||||
| Topological domain | 1465 – 2161 | 697 | Cytoplasmic Potential | ||||||
| Repeat | 113 – 409 | 297 | I | ||||||
| Repeat | 509 – 755 | 247 | II | ||||||
| Repeat | 873 – 1155 | 283 | III | ||||||
| Repeat | 1192 – 1467 | 276 | IV | ||||||
| Calcium binding | 1493 – 1504 | 12 | By similarity | ||||||
| Region | 429 – 446 | 18 | Binding to the beta subunit By similarity | ||||||
| Region | 1075 – 1165 | 91 | Dihydropyridine binding By similarity | ||||||
| Region | 1420 – 1486 | 67 | Dihydropyridine binding By similarity | ||||||
| Region | 1432 – 1475 | 44 | Phenylalkylamine binding By similarity | ||||||
| Compositional bias | 1 – 7 | 7 | Poly-Met | ||||||
| Compositional bias | 653 – 659 | 7 | Poly-Leu | ||||||
| Compositional bias | 827 – 838 | 12 | Poly-Glu | ||||||
Sites | |||||||||
| Site | 364 | 1 | Calcium ion selectivity and permeability By similarity | ||||||
| Site | 705 | 1 | Calcium ion selectivity and permeability By similarity | ||||||
| Site | 1101 | 1 | Calcium ion selectivity and permeability By similarity | ||||||
| Site | 1406 | 1 | Calcium ion selectivity and permeability By similarity | ||||||
Amino acid modifications | |||||||||
| Modified residue | 1475 | 1 | Phosphoserine; by PKA Potential | ||||||
| Glycosylation | 155 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 225 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 329 | 1 | N-linked (GlcNAc...) Potential | ||||||
Natural variations | |||||||||
| Alternative sequence | 373 – 392 | 20 | MNDAM…SLVIF → VNDAIGWEWPWVYFVSLIIL in isoform Beta-cell-type. | VSP_000913 | |||||
| Alternative sequence | 493 | 1 | C → WCWWRRRGAAKAGPSGCRRW G in isoform Beta-cell-type. | VSP_000914 | |||||
| Natural variant | 1 | 1 | M → MM in a NIDDM patient. Ref.3 | VAR_001497 | |||||
| Natural variant | 403 | 1 | G → GG in SANDD; the mutant channels are unable to conduct calcium ions currents and have abnormal voltage-dependent gating. Ref.6 | VAR_069170 | |||||
| Natural variant | 2097 | 1 | D → N. Corresponds to variant rs41276455 [ dbSNP | Ensembl ]. | VAR_061103 | |||||
Experimental info | |||||||||
| Sequence conflict | 576 | 1 | S → T in BAA07804. Ref.3 | ||||||
| Sequence conflict | 637 | 1 | S → C in AAA58402. Ref.1 | ||||||
| Sequence conflict | 650 | 1 | I → S in AAA58402. Ref.1 | ||||||
| Sequence conflict | 918 | 1 | I → T in BAA07804. Ref.3 | ||||||
| Sequence conflict | 960 | 1 | M → I in BAA07804. Ref.3 | ||||||
| Sequence conflict | 1289 – 1290 | 2 | Missing in BAA07804. Ref.3 | ||||||
| Sequence conflict | 1346 | 1 | S → F in AAA58402. Ref.1 | ||||||
| Sequence conflict | 1433 | 1 | Y → H in AAA58402. Ref.1 | ||||||
Sequences
| ||||||||||||||||||||||||
References
| [1] | "Structure and functional expression of alpha 1, alpha 2, and beta subunits of a novel human neuronal calcium channel subtype." Williams M.E., Feldman D.H., McCue A.F., Brenner R., Velicelebi G., Ellis S.B., Harpold M.M. Neuron 8:71-84(1992) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM NEURONAL-TYPE). Tissue: Neuroblastoma. |
| [2] | "Cloning of the alpha 1 subunit of a voltage-dependent calcium channel expressed in pancreatic beta cells." Seino S., Chen L., Seino M., Blondel O., Takeda J., Johnson J.H., Bell G.I. Proc. Natl. Acad. Sci. U.S.A. 89:584-588(1992) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM BETA-CELL-TYPE). Tissue: Pancreatic islet. |
| [3] | "The structures of the human calcium channel alpha 1 subunit (CACNL1A2) and beta subunit (CACNLB3) genes." Yamada Y., Masuda K., Li Q., Ihara Y., Kubota A., Miura T., Nakamura K., Fujii Y., Seino S., Seino Y. Genomics 27:312-319(1995) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORM BETA-CELL-TYPE), VARIANT MET-1 INS. |
| [4] | "Molecular diversity of neuronal-type calcium channels identified in small cell lung carcinoma." Oguro-Okano M., Griesmann G.E., Wieben E.D., Slaymaker S.J., Snutch T.P., Lennon V.A. Mayo Clin. Proc. 67:1150-1159(1992) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 747-1039, TISSUE SPECIFICITY. Tissue: Lung carcinoma. |
| [5] | "Loss of recognition by cross-reactive T cells and its relation to a C-terminus-induced conformational reorientation of an HLA-B*2705-bound peptide." Loll B., Ruckert C., Hee C.S., Saenger W., Uchanska-Ziegler B., Ziegler A. Protein Sci. 0:0-0(2010) [PubMed] [Europe PMC] [Abstract] Cited for: X-RAY CRYSTALLOGRAPHY (1.94 ANGSTROMS) OF 502-510 IN COMPLEX WITH HLA. |
| [6] | "Loss of Ca(v)1.3 (CACNA1D) function in a human channelopathy with bradycardia and congenital deafness." Baig S.M., Koschak A., Lieb A., Gebhart M., Dafinger C., Nurnberg G., Ali A., Ahmad I., Sinnegger-Brauns M.J., Brandt N., Engel J., Mangoni M.E., Farooq M., Khan H.U., Nurnberg P., Striessnig J., Bolz H.J. Nat. Neurosci. 14:77-84(2011) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANT SANDD GLY-403 INS, CHARACTERIZATION OF VARIANT SANDD GLY-403 INS. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EMBL GenBank DDBJ | M76558 mRNA. Translation: AAA58402.1. M83566 mRNA. Translation: AAA35629.1. D43747 Genomic DNA. Translation: BAA07804.1. | ||||||||||||
| IPI | IPI00009008. IPI00216354. | ||||||||||||
| PIR | JH0564. | ||||||||||||
| RefSeq | NP_000711.1. NM_000720.3. NP_001122311.1. NM_001128839.2. NP_001122312.1. NM_001128840.2. | ||||||||||||
| UniGene | Hs.476358. | ||||||||||||
3D structure databases | |||||||||||||
| PDBe RCSB PDB PDBj |
| ||||||||||||
| ProteinModelPortal | Q01668. | ||||||||||||
| ModBase | Search... | ||||||||||||
Protein-protein interaction databases | |||||||||||||
| DIP | DIP-48998N. | ||||||||||||
| STRING | 9606.ENSP00000288139. | ||||||||||||
PTM databases | |||||||||||||
| PhosphoSite | Q01668. | ||||||||||||
Polymorphism databases | |||||||||||||
| DMDM | 116241275. | ||||||||||||
Proteomic databases | |||||||||||||
| PaxDb | Q01668. | ||||||||||||
| PRIDE | Q01668. | ||||||||||||
Protocols and materials databases | |||||||||||||
| StructuralBiologyKnowledgebase | Search... | ||||||||||||
Genome annotation databases | |||||||||||||
| Ensembl | ENST00000288139; ENSP00000288139; ENSG00000157388. ENST00000350061; ENSP00000288133; ENSG00000157388. | ||||||||||||
| GeneID | 776. | ||||||||||||
| KEGG | hsa:776. | ||||||||||||
| UCSC | uc003dgu.4. human. uc003dgv.4. human. | ||||||||||||
Organism-specific databases | |||||||||||||
| CTD | 776. | ||||||||||||
| GeneCards | GC03P053504. | ||||||||||||
| HGNC | HGNC:1391. CACNA1D. | ||||||||||||
| HPA | HPA020215. | ||||||||||||
| MIM | 114206. gene. 614896. phenotype. | ||||||||||||
| neXtProt | NX_Q01668. | ||||||||||||
| PharmGKB | PA84. | ||||||||||||
| GenAtlas | Search... | ||||||||||||
Phylogenomic databases | |||||||||||||
| eggNOG | COG1226. | ||||||||||||
| HOGENOM | HOG000231529. | ||||||||||||
| HOVERGEN | HBG050763. | ||||||||||||
| KO | K04851. | ||||||||||||
| OMA | TCFFADS. | ||||||||||||
| OrthoDB | EOG47D9F6. | ||||||||||||
Enzyme and pathway databases | |||||||||||||
| Reactome | REACT_111045. Developmental Biology. REACT_111217. Metabolism. | ||||||||||||
Gene expression databases | |||||||||||||
| ArrayExpress | Q01668. | ||||||||||||
| Bgee | Q01668. | ||||||||||||
| CleanEx | HS_CACNA1D. | ||||||||||||
| Genevestigator | Q01668. | ||||||||||||
| GermOnline | ENSG00000157388. Homo sapiens. | ||||||||||||
Family and domain databases | |||||||||||||
| InterPro | IPR005821. Ion_trans_dom. IPR005452. LVDCC_a1dsu. IPR014873. VDCC_a1su_IQ. IPR005446. VDCC_L_a1su. IPR002077. VDCCAlpha1. [Graphical view] | ||||||||||||
| Pfam | PF08763. Ca_chan_IQ. 1 hit. PF00520. Ion_trans. 4 hits. [Graphical view] | ||||||||||||
| PRINTS | PR00167. CACHANNEL. PR01630. LVDCCALPHA1. PR01636. LVDCCALPHA1D. | ||||||||||||
| SMART | SM01062. Ca_chan_IQ. 1 hit. [Graphical view] | ||||||||||||
| ProtoNet | Search... | ||||||||||||
Other | |||||||||||||
| BindingDB | Q01668. | ||||||||||||
| ChEMBL | CHEMBL4138. | ||||||||||||
| DrugBank | DB00661. Verapamil. | ||||||||||||
| GenomeRNAi | 776. | ||||||||||||
| NextBio | 3136. | ||||||||||||
| SOURCE | Search... | ||||||||||||
Entry information
| Entry name | CAC1D_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q01668 Secondary accession number(s): Q13916, Q13931, Q9UDC3 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| 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 3 Human chromosome 3: 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 |
| SIMILARITY comments Index of protein domains and families |

Clusters with
