Q9NS61 (KCIP2_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
January 25, 2012.
Version 93.
History...
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Kv channel-interacting protein 2 Short name=KChIP2 Alternative name(s): A-type potassium channel modulatory protein 2 Cardiac voltage-gated potassium channel modulatory subunit Potassium channel-interacting protein 2 | ||||
| Gene names |
| ||||
| Organism | Homo sapiens (Human) | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
Protein attributes
| Sequence length | 270 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Regulatory subunit of Kv4/D (Shal)-type voltage-gated rapidly inactivating A-type potassium channels. Probably modulates channels density, inactivation kinetics and rate of recovery from inactivation in a calcium-dependent and isoform-specific manner. In vitro, modulates KCND2/Kv4.2 and KCND3/Kv4.3 currents. Involved in KCND2 and KCND3 trafficking to the cell surface By similarity. Ref.1 Ref.3 Ref.4 Ref.14 Ref.15 Ref.17 |
| Subunit structure | Component of heteromultimeric potassium channels. The KCND2-KCNIP2 channel complex contains four KCND2 and four KCNIP2 subunits. Interacts with KCND2. Isoform 1 and isoform 3 interact with KCND3 isoform 1. Probably part of a complex consisting of KCNIP1, KCNIP2 isoform 3 and KCND2. At least isoform 2 and isoform 3 can self-associate to form homodimers and homotetramers. Isoform 3 interacts with KCNIP1 in a calcium-dependent manner. Ref.1 Ref.4 Ref.14 Ref.16 Ref.18 |
| Subcellular location | Isoform 1: Cell membrane; Lipid-anchor By similarity. Isoform 2: Cell membrane; Lipid-anchor By similarity. Isoform 6: Cell membrane; Lipid-anchor By similarity. |
| Tissue specificity | Expressed in brain. Colocalizes with KCND2 in excitatory neurons including cortical and hippocampal CA1 pyramidal cells. Isoform 3 is expressed in heart and in umbilical vein endothelial cells. Not expressed in fetal heart. Ref.2 Ref.3 Ref.18 |
| Post-translational modification | Palmitoylated. Palmitoylation enhances association with the plasma membrane By similarity. |
| Sequence similarities | Belongs to the recoverin family. Contains 4 EF-hand domains. |
Ontologies
Binary interactions
With | Entry | #Exp. | IntAct | Notes |
|---|---|---|---|---|
| KCND2 | Q9NZV8 | 3 | EBI-1053010,EBI-1646745 | |
| KCNIP1 | Q9NZI2 | 4 | EBI-1053010,EBI-2120635 |
Alternative products
| This entry describes 9 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q9NS61-1) Also known as: KChIP2a; KChIP2b; KCHIP2.4; KCHIP2L; 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: Q9NS61-2) Also known as: 3; KChIP2.1; KChIP2b; The sequence of this isoform differs from the canonical sequence as follows: 57-75: TLAAPASLRPHRPRLLDPD → N | ||||||
| Isoform 3 (identifier: Q9NS61-3) Also known as: 2; KChIP2.2; KChIP2c; KCHIP2S; The sequence of this isoform differs from the canonical sequence as follows: 25-74: Missing. | ||||||
| Isoform 4 (identifier: Q9NS61-4) The sequence of this isoform differs from the canonical sequence as follows: 1-73: MRGQGRKESL...LRPHRPRLLD → MNRCPRRCRSPLGQAARSLYQLVTGSLS | ||||||
| Isoform 5 (identifier: Q9NS61-5) The sequence of this isoform differs from the canonical sequence as follows: 25-74: Missing. 160-163: Missing. | ||||||
| Isoform 6 (identifier: Q9NS61-6) Also known as: KCHIP4.2; The sequence of this isoform differs from the canonical sequence as follows: 57-57: T → IGRVFRFLGDSSLPSA | ||||||
| Isoform 7 (identifier: Q9NS61-7) The sequence of this isoform differs from the canonical sequence as follows: 25-74: Missing. 116-116: N → NPGALSFQ | ||||||
| Isoform 8 (identifier: Q9NS61-8) Also known as: KCHIP2.6; The sequence of this isoform differs from the canonical sequence as follows: 1-93: Missing. 94-162: EQLQEQTKFT...DTNHDGSVSF → MWLSWTAWTM...SRFTPSSFLK | ||||||
| Isoform 9 (identifier: Q9NS61-9) Also known as: KCHIP2.5; The sequence of this isoform differs from the canonical sequence as follows: 25-74: Missing. 163-198: Missing. 256-270: DENIMRSMQLFDNVI → VQLPALYITLTWTQA |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 270 | 270 | Kv channel-interacting protein 2 | PRO_0000073821 | |||||
Regions | |||||||||
| Domain | 81 – 137 | 57 | EF-hand 1; degenerate | ||||||
| Domain | 140 – 175 | 36 | EF-hand 2 | ||||||
| Domain | 176 – 211 | 36 | EF-hand 3 | ||||||
| Domain | 224 – 259 | 36 | EF-hand 4 | ||||||
| Calcium binding | 189 – 200 | 12 | 1 By similarity | ||||||
| Calcium binding | 237 – 248 | 12 | 2 By similarity | ||||||
| Region | 257 – 270 | 14 | Interaction with KCND2 By similarity | ||||||
Amino acid modifications | |||||||||
| Modified residue | 103 | 1 | Phosphothreonine Ref.19 | ||||||
| Modified residue | 111 | 1 | Phosphotyrosine Ref.19 | ||||||
| Lipidation | 45 | 1 | S-palmitoyl cysteine By similarity | ||||||
| Lipidation | 46 | 1 | S-palmitoyl cysteine By similarity | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 93 | 93 | Missing in isoform 8. | VSP_015049 | |||||
| Alternative sequence | 1 – 73 | 73 | MRGQG…PRLLD → MNRCPRRCRSPLGQAARSLY QLVTGSLS in isoform 4. | VSP_015050 | |||||
| Alternative sequence | 25 – 74 | 50 | Missing in isoform 3, isoform 5, isoform 7 and isoform 9. | VSP_015051 | |||||
| Alternative sequence | 57 – 75 | 19 | TLAAP…LLDPD → N in isoform 2. | VSP_015052 | |||||
| Alternative sequence | 57 | 1 | T → IGRVFRFLGDSSLPSA in isoform 6. | VSP_015053 | |||||
| Alternative sequence | 94 – 162 | 69 | EQLQE…GSVSF → MWLSWTAWTMNLNCPPCVTG LRVWSSCRSKPNSRARSCRS CTGASRTNVPAELSMRRTSS RFTPSSFLK in isoform 8. | VSP_015054 | |||||
| Alternative sequence | 116 | 1 | N → NPGALSFQ in isoform 7. | VSP_015055 | |||||
| Alternative sequence | 160 – 163 | 4 | Missing in isoform 5. | VSP_015056 | |||||
| Alternative sequence | 163 – 198 | 36 | Missing in isoform 9. | VSP_015057 | |||||
| Alternative sequence | 256 – 270 | 15 | DENIM…FDNVI → VQLPALYITLTWTQA in isoform 9. | VSP_015058 | |||||
Experimental info | |||||||||
| Sequence conflict | 50 | 1 | A → V in BAA96740. Ref.2 | ||||||
| Sequence conflict | 71 | 1 | L → P in BAA96740. Ref.2 | ||||||
| Sequence conflict | 75 | 1 | D → V in BAA96741. Ref.2 | ||||||
| Sequence conflict | 76 | 1 | S → R in BAB55052. Ref.10 | ||||||
| Sequence conflict | 78 | 1 | D → E in BAA96740. Ref.2 | ||||||
| Sequence conflict | 83 | 1 | L → S in CAB66656. Ref.8 | ||||||
| Sequence conflict | 224 | 1 | A → P in BAA96740. Ref.2 | ||||||
| Sequence conflict | 224 | 1 | A → P in BAA96741. Ref.2 | ||||||
| Sequence conflict | 239 | 1 | N → S in AAP57633. Ref.9 | ||||||
| Sequence conflict | 246 | 1 | I → N in CAB66656. Ref.8 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Modulation of A-type potassium channels by a family of calcium sensors." An W.F., Bowlby M.R., Betty M., Cao J., Ling H.-P., Mendoza G., Hinson J.W., Mattsson K.I., Strassle B.W., Trimmer J.S., Rhodes K.J. Nature 403:553-556(2000) [PubMed: 10676964] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), FUNCTION, INTERACTION WITH KCND2. |
| [2] | "Molecular cloning and expression of the novel splice variants of K(+) channel-interacting protein 2." Ohya S., Morohashi Y., Muraki K., Tomita T., Watanabe M., Iwatsubo T., Imaizumi Y. Biochem. Biophys. Res. Commun. 282:96-102(2001) [PubMed: 11263977] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1 AND 3), TISSUE SPECIFICITY. Tissue: Umbilical vein endothelial cell. |
| [3] | "hKChIP2 is a functional modifier of hKv4.3 potassium channels: cloning and expression of a short hKChIP2 splice variant." Decher N., Uyguner O., Scherer C.R., Karaman B., Yuksel-Apak M., Busch A.E., Steinmeyer K., Wollnik B. Cardiovasc. Res. 52:255-264(2001) [PubMed: 11684073] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA], NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 3), FUNCTION, TISSUE SPECIFICITY. |
| [4] | "Conserved Kv4 N-terminal domain critical for effects of Kv channel-interacting protein 2.2 on channel expression and gating." Baehring R., Dannenberg J., Peters H.C., Leicher T., Pongs O., Isbrandt D. J. Biol. Chem. 276:23888-23894(2001) [PubMed: 11287421] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), FUNCTION, INTERACTION WITH KCND2. |
| [5] | "Modulatory elements of voltage gated potassium channels." Juang G.J., Tomaselli G.F. Submitted (AUG-2000) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 3 AND 7). Tissue: Heart. |
| [6] | Isbrandt D., Pongs O. Submitted (MAR-2001) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1; 6; 8 AND 9). |
| [7] | "Structure, alternative splicing, and expression of the human and mouse KCNIP gene family." Pruunsild P., Timmusk T. Genomics 86:581-593(2005) [PubMed: 16112838] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1 AND 2), ALTERNATIVE SPLICING. |
| [8] | "Towards a catalog of human genes and proteins: sequencing and analysis of 500 novel complete protein coding human cDNAs." Wiemann S., Weil B., Wellenreuther R., Gassenhuber J., Glassl S., Ansorge W., Boecher M., Bloecker H., Bauersachs S., Blum H., Lauber J., Duesterhoeft A., Beyer A., Koehrer K., Strack N., Mewes H.-W., Ottenwaelder B., Obermaier B. Poustka A.Genome Res. 11:422-435(2001) [PubMed: 11230166] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 4). Tissue: Kidney. |
| [9] | Li H., Zhong J., Zhou G., Shen C., Lin L., Yang S. Submitted (MAY-2003) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 5). |
| [10] | "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] (ISOFORMS 2 AND 4). Tissue: Brain and Embryo. |
| [11] | "The DNA sequence and comparative analysis of human chromosome 10." Deloukas P., Earthrowl M.E., Grafham D.V., Rubenfield M., French L., Steward C.A., Sims S.K., Jones M.C., Searle S., Scott C., Howe K., Hunt S.E., Andrews T.D., Gilbert J.G.R., Swarbreck D., Ashurst J.L., Taylor A., Battles J. Rogers J.Nature 429:375-381(2004) [PubMed: 15164054] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [12] | "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: Brain. |
| [13] | "Full-length of some muscular transcripts, Telethon (Italy) project B41." Ievolella C., Trevisan S., Pacchioni B., Stanchi F., Frigimelica E., Scannapieco P., Corso V., Biasio B., Lanfranchi G. Submitted (MAR-2000) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 213-270. Tissue: Skeletal muscle. |
| [14] | "Modulation of Kv4.3 current by accessory subunits." Deschenes I., Tomaselli G.F. FEBS Lett. 528:183-188(2002) [PubMed: 12297301] [Abstract] Cited for: FUNCTION, INTERACTION WITH KCND3. |
| [15] | "A fundamental role for KChIPs in determining the molecular properties and trafficking of Kv4.2 potassium channels." Shibata R., Misonou H., Campomanes C.R., Anderson A.E., Schrader L.A., Doliveira L.C., Carroll K.I., Sweatt J.D., Rhodes K.J., Trimmer J.S. J. Biol. Chem. 278:36445-36454(2003) [PubMed: 12829703] [Abstract] Cited for: FUNCTION. |
| [16] | "Protein-protein interactions of KChIP proteins and Kv4.2." Lin Y.-L., Chen C.Y., Cheng C.P., Chang L.S. Biochem. Biophys. Res. Commun. 321:606-610(2004) [PubMed: 15358149] [Abstract] Cited for: INTERACTION WITH KCNIP1 AND KCDN2, HOMOOLIGOMERIZATION. |
| [17] | "Ito channels are octomeric complexes with four subunits of each Kv4.2 and K+ channel-interacting protein 2." Kim L.A., Furst J., Butler M.H., Xu S., Grigorieff N., Goldstein S.A. J. Biol. Chem. 279:5549-5554(2004) [PubMed: 14623880] [Abstract] Cited for: FUNCTION, COMPOSITION OF THE KCND2-KCNIP2 COMPLEX. |
| [18] | "KChIPs and Kv4 alpha subunits as integral components of A-type potassium channels in mammalian brain." Rhodes K.J., Carroll K.I., Sung M.A., Doliveira L.C., Monaghan M.M., Burke S.L., Strassle B.W., Buchwalder L., Menegola M., Cao J., An W.F., Trimmer J.S. J. Neurosci. 24:7903-7915(2004) [PubMed: 15356203] [Abstract] Cited for: TISSUE SPECIFICITY, INTERACTION WITH KCND2. |
| [19] | "Combining protein-based IMAC, peptide-based IMAC, and MudPIT for efficient phosphoproteomic analysis." Cantin G.T., Yi W., Lu B., Park S.K., Xu T., Lee J.-D., Yates J.R. III J. Proteome Res. 7:1346-1351(2008) [PubMed: 18220336] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT THR-103 AND TYR-111, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [20] | "Three-dimensional structure of I(to); Kv4.2-KChIP2 ion channels by electron microscopy at 21 Angstrom resolution." Kim L.A., Furst J., Gutierrez D., Butler M.H., Xu S., Goldstein S.A., Grigorieff N. Neuron 41:513-519(2004) [PubMed: 14980201] [Abstract] Cited for: ELECTRON MICROSCOPY OF THE KCND2-KCNIP2 COMPLEX. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AF199598 mRNA. Translation: AAF33683.1. AB044584 mRNA. Translation: BAA96740.1. AB044585 mRNA. Translation: BAA96741.1. AY026328 mRNA. Translation: AAK07674.1. AY026331, AY026329, AY026330 Genomic DNA. Translation: AAK21972.1. AF347114 mRNA. Translation: AAK70356.1. AF295076 mRNA. Translation: AAG02120.1. AF295530 mRNA. Translation: AAG02121.1. AF367018 mRNA. Translation: AAK53707.1. AF367019 mRNA. Translation: AAK53708.1. AF367020 mRNA. Translation: AAK53709.1. AF367021 mRNA. Translation: AAK53710.1. DQ148480 mRNA. Translation: AAZ77797.1. DQ148481 mRNA. Translation: AAZ77798.1. AL136722 mRNA. Translation: CAB66656.1. AY302141 mRNA. Translation: AAP57633.1. AK027347 mRNA. Translation: BAB55052.1. AK315042 mRNA. Translation: BAG37523.1. AC010789 Genomic DNA. No translation available. BC034685 mRNA. Translation: AAH34685.1. AJ276317 mRNA. Translation: CAB77054.1. |
| IPI | IPI00005558. IPI00008959. IPI00045897. IPI00045898. IPI00173952. IPI00289162. IPI00298990. IPI00306640. IPI00646538. |
| RefSeq | NP_055406.2. NM_014591.4. NP_775283.1. NM_173191.2. NP_775284.1. NM_173192.2. NP_775285.1. NM_173193.2. NP_775286.1. NM_173194.2. NP_775287.1. NM_173195.2. NP_775289.1. NM_173197.2. |
| UniGene | Hs.97044. |
3D structure databases | |
| ProteinModelPortal | Q9NS61. |
| SMR | Q9NS61. Positions 6-84, 90-270. |
| ModBase | Search... |
Protein-protein interaction databases | |
| IntAct | Q9NS61. 9 interactions. |
| STRING | Q9NS61. |
PTM databases | |
| PhosphoSite | Q9NS61. |
Polymorphism databases | |
| DMDM | 73621125. |
Proteomic databases | |
| PRIDE | Q9NS61. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000356640; ENSP00000349055; ENSG00000120049. |
| GeneID | 30819. |
| KEGG | hsa:30819. |
| UCSC | uc001kty.1. human. uc001ktz.1. human. uc001kuc.1. human. uc001kud.1. human. uc001kuf.1. human. uc001kug.1. human. uc009xwv.1. human. |
Organism-specific databases | |
| CTD | 30819. |
| GeneCards | GC10M103575. |
| HGNC | HGNC:15522. KCNIP2. |
| MIM | 604661. gene. |
| neXtProt | NX_Q9NS61. |
| GenAtlas | Search... |
Phylogenomic databases | |
| GeneTree | ENSGT00560000076973. |
| HOVERGEN | HBG108179. |
| OMA | ILRGTTD. |
| PhylomeDB | Q9NS61. |
Gene expression databases | |
| ArrayExpress | Q9NS61. |
| Bgee | Q9NS61. |
| Genevestigator | Q9NS61. |
| GermOnline | ENSG00000120049. Homo sapiens. |
Family and domain databases | |
| InterPro | IPR018248. EF-hand. IPR011992. EF-hand-like_dom. IPR018247. EF_Hand_1_Ca_BS. IPR018249. EF_HAND_2. IPR002048. EF_hand_Ca-bd. IPR001125. Recoverin. [Graphical view] |
| Gene3D | G3DSA:1.10.238.10. EF-Hand_type. 1 hit. |
| Pfam | PF00036. efhand. 1 hit. [Graphical view] |
| PRINTS | PR00450. RECOVERIN. |
| SMART | SM00054. EFh. 3 hits. [Graphical view] |
| PROSITE | PS00018. EF_HAND_1. 3 hits. PS50222. EF_HAND_2. 3 hits. [Graphical view] |
| ProtoNet | Search... |
Other | |
| NextBio | 52904. |
| SOURCE | Search... |
Entry information
| Entry name | KCIP2_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q9NS61 Secondary accession number(s): A6NJE5 Q9NZI1 | ||||||||
| 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 10 Human chromosome 10: 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