Q8IZF0 (NALCN_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 100.
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: Sodium leak channel non-selective protein Alternative name(s): CanIon Voltage gated channel-like protein 1 | ||||
| Gene names |
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| 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 | 1738 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at transcript level |
General annotation (Comments)
| Function | Voltage-independent, cation-nonselective channel which is permeable to sodium, potassium and calcium ions. Responsible for the background sodium ion leak current in neurons and controls neuronal excitability. Activated either by neuropeptides substance P or neurotensin. Required for normal respiratory rhythm and neonatal survival By similarity. Ref.7 |
| Subunit structure | Interacts with UNC79 and UNC80 By similarity. |
| Subcellular location | Membrane; Multi-pass membrane protein Potential. |
| 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. |
| Sequence similarities | Belongs to the cation-nonselective channel family. |
| Sequence caution | The sequence BAD18738.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended. |
Ontologies
| Keywords | |
|---|---|
| Biological process | Ion transport Sodium transport Transport |
| Cellular component | Membrane |
| Coding sequence diversity | Alternative splicing |
| Domain | Coiled coil Repeat Transmembrane Transmembrane helix |
| Ligand | Sodium |
| Molecular function | Ion channel Sodium channel Voltage-gated channel |
| Technical term | Complete proteome Reference proteome |
| Gene Ontology (GO) | |
| Biological_process | sodium ion transmembrane transport Inferred from electronic annotation. Source: GOC |
| Cellular_component | integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW |
| Molecular_function | sodium channel activity Inferred from electronic annotation. Source: UniProtKB-KW voltage-gated ion channel activityInferred from electronic annotation. Source: UniProtKB-KW |
| Complete GO annotation... | |
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q8IZF0-1) 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: Q8IZF0-2) The sequence of this isoform differs from the canonical sequence as follows: 589-668: ILLSLFVAVI...RESFMKQFID → PPSLIRDLCG...GSLSLSHNLQ 669-1738: Missing. | ||||||
| Isoform 3 (identifier: Q8IZF0-3) The sequence of this isoform differs from the canonical sequence as follows: 216-218: NVT → LSL 219-1738: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 1738 | 1738 | Sodium leak channel non-selective protein | PRO_0000314010 | |||||
Regions | |||||||||
| Topological domain | 1 – 40 | 40 | Cytoplasmic Potential | ||||||
| Transmembrane | 41 – 61 | 21 | Helical; Name=S1 of repeat I; Potential | ||||||
| Topological domain | 62 – 66 | 5 | Extracellular Potential | ||||||
| Transmembrane | 67 – 87 | 21 | Helical; Name=S2 of repeat I; Potential | ||||||
| Topological domain | 88 – 106 | 19 | Cytoplasmic Potential | ||||||
| Transmembrane | 107 – 127 | 21 | Helical; Name=S3 of repeat I; Potential | ||||||
| Topological domain | 128 – 138 | 11 | Extracellular Potential | ||||||
| Transmembrane | 139 – 158 | 20 | Helical; Voltage-sensor; Name=S4 of repeat I; Potential | ||||||
| Topological domain | 159 – 182 | 24 | Cytoplasmic Potential | ||||||
| Transmembrane | 183 – 203 | 21 | Helical; Name=S5 of repeat I; Potential | ||||||
| Topological domain | 204 – 301 | 98 | Extracellular Potential | ||||||
| Transmembrane | 302 – 322 | 21 | Helical; Name=S6 of repeat I; Potential | ||||||
| Topological domain | 323 – 382 | 60 | Cytoplasmic Potential | ||||||
| Transmembrane | 383 – 403 | 21 | Helical; Name=S1 of repeat II; Potential | ||||||
| Topological domain | 404 – 422 | 19 | Extracellular Potential | ||||||
| Transmembrane | 423 – 443 | 21 | Helical; Name=S2 of repeat II; Potential | ||||||
| Topological domain | 444 – 448 | 5 | Cytoplasmic Potential | ||||||
| Transmembrane | 449 – 468 | 20 | Helical; Name=S3 of repeat II; Potential | ||||||
| Topological domain | 469 – 476 | 8 | Extracellular Potential | ||||||
| Transmembrane | 477 – 500 | 24 | Helical; Voltage-sensor; Name=S4 of repeat II; Potential | ||||||
| Topological domain | 501 – 509 | 9 | Cytoplasmic Potential | ||||||
| Transmembrane | 510 – 530 | 21 | Helical; Name=S5 of repeat II; Potential | ||||||
| Topological domain | 531 – 578 | 48 | Extracellular Potential | ||||||
| Transmembrane | 579 – 599 | 21 | Helical; Name=S6 of repeat II; Potential | ||||||
| Topological domain | 600 – 880 | 281 | Cytoplasmic Potential | ||||||
| Transmembrane | 881 – 901 | 21 | Helical; Name=S1 of repeat III; Potential | ||||||
| Topological domain | 902 – 923 | 22 | Extracellular Potential | ||||||
| Transmembrane | 924 – 944 | 21 | Helical; Name=S2 of repeat III; Potential | ||||||
| Topological domain | 945 – 952 | 8 | Cytoplasmic Potential | ||||||
| Transmembrane | 953 – 973 | 21 | Helical; Name=S3 of repeat III; Potential | ||||||
| Topological domain | 974 – 979 | 6 | Extracellular Potential | ||||||
| Transmembrane | 980 – 997 | 18 | Helical; Voltage-sensor; Name=S4 of repeat III; Potential | ||||||
| Topological domain | 998 – 1015 | 18 | Cytoplasmic Potential | ||||||
| Transmembrane | 1016 – 1036 | 21 | Helical; Name=S5 of repeat III; Potential | ||||||
| Topological domain | 1037 – 1135 | 99 | Extracellular Potential | ||||||
| Transmembrane | 1136 – 1156 | 21 | Helical; Name=S6 of repeat III; Potential | ||||||
| Topological domain | 1157 – 1209 | 53 | Cytoplasmic Potential | ||||||
| Transmembrane | 1210 – 1227 | 18 | Helical; Name=S1 of repeat IV; Potential | ||||||
| Topological domain | 1228 – 1235 | 8 | Extracellular Potential | ||||||
| Transmembrane | 1236 – 1256 | 21 | Helical; Name=S2 of repeat IV; Potential | ||||||
| Topological domain | 1257 – 1277 | 21 | Cytoplasmic Potential | ||||||
| Transmembrane | 1278 – 1298 | 21 | Helical; Name=S3 of repeat IV; Potential | ||||||
| Topological domain | 1299 | 1 | Extracellular Potential | ||||||
| Transmembrane | 1300 – 1316 | 17 | Helical; Voltage-sensor; Name=S4 of repeat IV; Potential | ||||||
| Topological domain | 1317 – 1335 | 19 | Cytoplasmic Potential | ||||||
| Transmembrane | 1336 – 1356 | 21 | Helical; Name=S5 of repeat IV; Potential | ||||||
| Topological domain | 1357 – 1426 | 70 | Extracellular Potential | ||||||
| Transmembrane | 1427 – 1447 | 21 | Helical; Name=S6 of repeat IV; Potential | ||||||
| Topological domain | 1448 – 1738 | 291 | Cytoplasmic Potential | ||||||
| Coiled coil | 795 – 830 | 36 | Potential | ||||||
Natural variations | |||||||||
| Alternative sequence | 216 – 218 | 3 | NVT → LSL in isoform 3. | VSP_030188 | |||||
| Alternative sequence | 219 – 1738 | 1520 | Missing in isoform 3. | VSP_030189 | |||||
| Alternative sequence | 589 – 668 | 80 | ILLSL…KQFID → PPSLIRDLCGTQDACPSCLP LQPPNHLPGSQTLARLTHQA LTTPPGMRSSQLFSKISLLL GICVAWESILGSLSLSHNLQ in isoform 2. | VSP_030190 | |||||
| Alternative sequence | 669 – 1738 | 1070 | Missing in isoform 2. | VSP_030191 | |||||
Sequences
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References
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AY141972 mRNA. Translation: AAN10255.1. AL354891, AL138707, AL356778 Genomic DNA. Translation: CAH73919.1. AL356778, AL138707, AL354891 Genomic DNA. Translation: CAI16648.1. AL138707, AL354891, AL356778 Genomic DNA. Translation: CAI40711.1. CH471085 Genomic DNA. Translation: EAX09045.1. BC028390 mRNA. Translation: AAH28390.1. BC064343 mRNA. Translation: AAH64343.1. AE014293 Genomic DNA. Translation: AAN16023.1. AK172752 mRNA. Translation: BAD18738.1. Different initiation. |
| IPI | IPI00217996. IPI00827756. IPI01011084. |
| RefSeq | NP_443099.1. NM_052867.2. |
| UniGene | Hs.525146. |
3D structure databases | |
| ProteinModelPortal | Q8IZF0. |
| ModBase | Search... |
Protein-protein interaction databases | |
| STRING | 9606.ENSP00000251127. |
Protein family/group databases | |
| TCDB | 1.A.1.11.15. voltage-gated ion channel (VIC) superfamily. |
PTM databases | |
| PhosphoSite | Q8IZF0. |
Polymorphism databases | |
| DMDM | 74750791. |
Proteomic databases | |
| PaxDb | Q8IZF0. |
| PRIDE | Q8IZF0. |
Protocols and materials databases | |
| DNASU | 259232. |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000251127; ENSP00000251127; ENSG00000102452. ENST00000376200; ENSP00000365373; ENSG00000102452. |
| GeneID | 259232. |
| KEGG | hsa:259232. |
| UCSC | uc001vox.1. human. |
Organism-specific databases | |
| CTD | 259232. |
| GeneCards | GC13M101706. |
| H-InvDB | HIX0011433. |
| HGNC | HGNC:19082. NALCN. |
| HPA | HPA031889. HPA031890. HPA031958. |
| MIM | 611549. gene. |
| neXtProt | NX_Q8IZF0. |
| PharmGKB | PA162396840. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | NOG268129. |
| HOGENOM | HOG000012967. |
| HOVERGEN | HBG063081. |
| InParanoid | Q8IZF0. |
| OMA | MIVVTIC. |
| OrthoDB | EOG4R501V. |
| PhylomeDB | Q8IZF0. |
Gene expression databases | |
| ArrayExpress | Q8IZF0. |
| Bgee | Q8IZF0. |
| CleanEx | HS_NALCN. |
| Genevestigator | Q8IZF0. |
Family and domain databases | |
| InterPro | IPR005821. Ion_trans_dom. [Graphical view] |
| Pfam | PF00520. Ion_trans. 4 hits. [Graphical view] |
| ProtoNet | Search... |
Other | |
| ChEMBL | CHEMBL1628464. |
| ChiTaRS | NALCN. human. |
| GenomeRNAi | 259232. |
| NextBio | 93066. |
| SOURCE | Search... |
Entry information
| Entry name | NALCN_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q8IZF0 Secondary accession number(s): Q6P2S6 Q8TAH1 | ||||||||
| Entry history |
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| 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 13 Human chromosome 13: entries, gene names and cross-references to MIM |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
