Reviewed,
UniProtKB/Swiss-Prot Q86UW7 (CAPS2_HUMAN)
Last modified
February 9, 2010.
Version 69.
History...
Clusters with 100%,
90%,
50% identity |
Documents (5) |
Third-party data |
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Names and origin
| Protein names | Recommended name: Calcium-dependent secretion activator 2 Alternative name(s): Calcium-dependent activator protein for secretion 2 Short name=CAPS-2 | ||||
| Gene names |
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| 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 | 1296 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level. |
General annotation (Comments)
| Function | Calcium-binding protein involved in exocytosis of vesicles filled with neurotransmitters and neuropeptides. Probably acts upstream of fusion in the biogenesis or maintenance of mature secretory vesicles. Regulates neurotrophin release from granule cells leading to regulate cell differentiation and survival during cerebellar development. May specifically mediate the Ca2+-dependent exocytosis of large dense-core vesicles (DCVs) and other dense-core vesicles By similarity. |
| Subunit structure | Homodimer By similarity. Interacts with the dopamine receptor DRD2. Ref.9 |
| Subcellular location | Cytoplasmic vesicle membrane; Peripheral membrane protein; Cytoplasmic side Potential. Cell junction › synapse. Note: Membrane-associated to vesicles. Strongly enriched in synaptic fractions. Probably localizes to different vesicles compared to CADPS. Enriched on vesicular structures in the parallel fiber terminal of granule cells that are distinct from synaptic vesicles. |
| Tissue specificity | Widely expressed. Expressed in all adult and fetal tissues examined, with the strongest expression in kidney and pancreas. In brain, it is expressed at high levels in cerebellum, to a lesser degree in cerebral cortex, occipital pole, and frontal and temporal lobes. Only weakly expressed in medulla, spinal cord and putamen. Ref.2 |
| Domain | The PH domain is essential for regulated exocytosis and binds phospholipids By similarity. |
| Post-translational modification | Isoform 2 is phosphorylated upon DNA damage, probably by ATM or ATR. Ref.10 |
| Sequence similarities | Contains 1 C2 domain. Contains 1 MHD1 (MUNC13 homology domain 1) domain. Contains 1 PH domain. |
| Sequence caution | The sequence AAH54339.1 differs from that shown. Reason: Miscellaneous discrepancy. Contaminating sequence. Potential poly-A sequence. The sequence AK098170 differs from that shown. Reason: Miscellaneous discrepancy. Chimera. |
Ontologies
| Keywords | |
|---|---|
| Biological process | Exocytosis Protein transport Transport |
| Cellular component | Cell junction Cytoplasmic vesicle Membrane Synapse |
| Coding sequence diversity | Alternative splicing Polymorphism |
| Ligand | Calcium Lipid-binding Metal-binding |
| PTM | Phosphoprotein |
| Technical term | Complete proteome |
| Gene Ontology (GO) | |
| Biological process | exocytosis Inferred from electronic annotation. Source: UniProtKB-KW protein transportInferred from electronic annotation. Source: UniProtKB-KW |
| Cellular component | cell junction Inferred from electronic annotation. Source: UniProtKB-KW cytoplasmic vesicleInferred from electronic annotation. Source: UniProtKB-KW extrinsic to membraneInferred from electronic annotation. Source: UniProtKB-SubCell synapseInferred from electronic annotation. Source: UniProtKB-SubCell |
| Molecular function | calcium ion binding Inferred from electronic annotation. Source: UniProtKB-KW lipid bindingInferred 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: Q86UW7-1) 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: Q86UW7-2) The sequence of this isoform differs from the canonical sequence as follows: 618-621: SGKD → Y 860-862: Missing. 963-1003: KNIANSLPNVALPKVPSLPLNLPQIPNISTASWMPSLYEST → N 1104-1104: E → EFGSQW | ||||||
| Note: Phosphorylated on Ser-1061 upon DNA damage, probably by ATM or ATR. | ||||||
| Isoform 3 (identifier: Q86UW7-3) The sequence of this isoform differs from the canonical sequence as follows: 618-621: SGKD → Y 860-862: Missing. 963-1003: KNIANSLPNVALPKVPSLPLNLPQIPNISTASWMPSLYEST → N | ||||||
| Note: No experimental confirmation available. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 1296 | 1296 | Calcium-dependent secretion activator 2 | PRO_0000053868 | |||||
Regions | |||||||||
| Domain | 367 – 447 | 81 | C2 | ||||||
| Domain | 487 – 590 | 104 | PH | ||||||
| Domain | 885 – 1056 | 172 | MHD1 | ||||||
| Region | 755 – 1074 | 320 | Interaction with DRD2 | ||||||
Amino acid modifications | |||||||||
| Modified residue | 586 | 1 | Phosphotyrosine By similarity | ||||||
Natural variations | |||||||||
| Alternative sequence | 618 – 621 | 4 | SGKD → Y in isoform 2 and isoform 3. | VSP_016815 | |||||
| Alternative sequence | 860 – 862 | 3 | Missing in isoform 2 and isoform 3. | VSP_016816 | |||||
| Alternative sequence | 963 – 1003 | 41 | KNIAN…LYEST → N in isoform 2 and isoform 3. | VSP_016817 | |||||
| Alternative sequence | 1104 | 1 | E → EFGSQW in isoform 2. | VSP_016818 | |||||
| Natural variant | 298 | 1 | A → T: dbSNP rs17144625. Ref.2 | VAR_024786 | |||||
Experimental info | |||||||||
| Sequence conflict | 44 – 47 | 4 | APGR → GRG in AAN38707. Ref.2 | ||||||
| Sequence conflict | 90 | 1 | F → L in AAP22132. Ref.1 | ||||||
| Sequence conflict | 360 | 1 | D → G in AAP22132. Ref.1 | ||||||
| Sequence conflict | 457 | 1 | S → T in AK098170. Ref.6 | ||||||
| Sequence conflict | 488 | 1 | M → I in AAN38707. Ref.2 | ||||||
| Sequence conflict | 579 | 1 | I → V in BAB15210. Ref.6 | ||||||
| Sequence conflict | 1068 | 1 | S → G in BAB15210. Ref.6 | ||||||
Sequences
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References
| [1] | "A family of Ca2+-dependent activator proteins for secretion: comparative analysis of structure, expression, localization, and function." Speidel D., Varoqueaux F., Enk C., Nojiri M., Grishanin R.N., Martin T.F.J., Hofmann K., Brose N., Reim K. J. Biol. Chem. 278:52802-52809(2003) [PubMed: 14530279] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1). |
| [2] | "Cloning and characterization of human CADPS and CADPS2, new members of the Ca2+-dependent activator for secretion protein family." Cisternas F.A., Vincent J.B., Scherer S.W., Ray P.N. Genomics 81:279-291(2003) [PubMed: 12659812] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), TISSUE SPECIFICITY, VARIANT THR-298. |
| [3] | "The DNA sequence of human chromosome 7." Hillier L.W., Fulton R.S., Fulton L.A., Graves T.A., Pepin K.H., Wagner-McPherson C., Layman D., Maas J., Jaeger S., Walker R., Wylie K., Sekhon M., Becker M.C., O'Laughlin M.D., Schaller M.E., Fewell G.A., Delehaunty K.D., Miner T.L. Wilson R.K.Nature 424:157-164(2003) [PubMed: 12853948] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [4] | "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]. |
| [5] | "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), NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 1-180. Tissue: Brain, Skin and Testis. |
| [6] | "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] OF 1-506 (ISOFORM 1), NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 804-1296 (ISOFORM 2), NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 353-1296 (ISOFORM 3). Tissue: Hepatoma and Trachea. |
| [7] | "Prediction of the coding sequences of unidentified human genes. XVIII. The complete sequences of 100 new cDNA clones from brain which code for large proteins in vitro." Nagase T., Kikuno R., Nakayama M., Hirosawa M., Ohara O. DNA Res. 7:273-281(2000) [PubMed: 10997877] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 238-1296 (ISOFORM 2). |
| [8] | "The full-ORF clone resource of the German cDNA consortium." Bechtel S., Rosenfelder H., Duda A., Schmidt C.P., Ernst U., Wellenreuther R., Mehrle A., Schuster C., Bahr A., Bloecker H., Heubner D., Hoerlein A., Michel G., Wedler H., Koehrer K., Ottenwaelder B., Poustka A., Wiemann S., Schupp I. BMC Genomics 8:399-399(2007) [PubMed: 17974005] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 262-1296 (ISOFORM 2). Tissue: Stomach. |
| [9] | "Regulation of dense core vesicle release from PC12 cells by interaction between the D2 dopamine receptor and calcium-dependent activator protein for secretion (CAPS)." Binda A.V., Kabbani N., Levenson R. Biochem. Pharmacol. 69:1451-1461(2005) [PubMed: 15857609] [Abstract] Cited for: INTERACTION WITH DRD2. |
| [10] | "ATM and ATR substrate analysis reveals extensive protein networks responsive to DNA damage." Matsuoka S., Ballif B.A., Smogorzewska A., McDonald E.R. III, Hurov K.E., Luo J., Bakalarski C.E., Zhao Z., Solimini N., Lerenthal Y., Shiloh Y., Gygi S.P., Elledge S.J. Science 316:1160-1166(2007) [PubMed: 17525332] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-1061 (ISOFORM 2), MASS SPECTROMETRY. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AY264289 mRNA. Translation: AAP22132.1. AF401638 mRNA. Translation: AAN38707.1. AC004594 Genomic DNA. No translation available. AC004838 Genomic DNA. No translation available. AC004986 Genomic DNA. No translation available. AC006009 Genomic DNA. No translation available. AC006463 Genomic DNA. No translation available. AC015983 Genomic DNA. No translation available. AC091438 Genomic DNA. No translation available. CH236947 Genomic DNA. Translation: EAL24339.1. BC054339 mRNA. Translation: AAH54339.1. Sequence problems. BC136601 mRNA. Translation: AAI36602.1. BC144278 mRNA. Translation: AAI44279.1. AK000768 mRNA. Translation: BAA91372.1. Different initiation. AK025672 mRNA. Translation: BAB15210.1. Different initiation. AK098170 mRNA. No translation available. AB046811 mRNA. Translation: BAB13417.1. AL833058 mRNA. Translation: CAH56288.1. |
| IPI | IPI00550275. IPI00873837. IPI00945569. |
| RefSeq | NP_001009571.2. NP_060424.9. |
| UniGene | Hs.708214 |
3D structure databases | |
| SMR | Q86UW7. Positions 488-601. |
| ModBase | Search... |
Protein-protein interaction databases | |
| IntAct | Q86UW7. 1 interaction. |
| STRING | Q86UW7. |
PTM databases | |
| PhosphoSite | Q86UW7. |
Genome annotation databases | |
| Ensembl | ENST00000449022; ENSP00000398481; ENSG00000081803; Homo sapiens. [Genome view] |
| GeneID | 93664. |
| KEGG | hsa:93664. |
| UCSC | uc003vkg.2. human. uc010lkq.1. human. |
Organism-specific databases | |
| CTD | 93664. |
| GeneCards | GC07M121746. |
| H-InvDB | HIX0007033. |
| HGNC | HGNC:16018. CADPS2. |
| MIM | 609978. gene. |
| PharmGKB | PA26025. |
| HUGE | Search... |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | prNOG16624. |
| HOVERGEN | Q86UW7. |
| InParanoid | Q86UW7. |
Gene expression databases | |
| ArrayExpress | Q86UW7. |
| Bgee | Q86UW7. |
| CleanEx | HS_CAPS2. |
| Genevestigator | Q86UW7. |
| GermOnline | ENSG00000081803. Homo sapiens. |
Family and domain databases | |
| InterPro | IPR000008. C2_Ca-dep. IPR010439. DUF1041. IPR014770. Munc13_1. IPR011993. PH_type. IPR001849. Pleckstrin_homology. [Graphical view] |
| Gene3D | G3DSA:2.30.29.30. PH_type. 1 hit. |
| Pfam | PF06292. DUF1041. 1 hit. PF00169. PH. 1 hit. [Graphical view] |
| SMART | SM00239. C2. 1 hit. SM00233. PH. 1 hit. [Graphical view] |
| PROSITE | PS50004. C2. False negative. PS51258. MHD1. 1 hit. PS50003. PH_DOMAIN. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other Resources | |
| NextBio | 78208. |
| SOURCE | Search... |
Entry information
| Entry name | CAPS2_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q86UW7 Secondary accession number(s): A4D0X3 Q9NWK8 | ||||||||
| Entry history |
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| 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 |
| SIMILARITY comments Index of protein domains and families |

Clusters with


