CKAP5

Cytoskeleton associated protein 5
Available structures PDB Ortholog search: PDBe, RCSB List of PDB id codes 4QMI​, 4QMJ​
Identifiers
Symbols	CKAP5 ; CHTOG; MSPS; TOG; TOGp; ch-TOG
External IDs	OMIM: 611142 MGI: 1923036 HomoloGene: 8844 GeneCards: CKAP5 Gene
Gene ontology Molecular function • protein binding Cellular component • spindle pole • gamma-tubulin complex • centrosome • cytosol • microtubule cytoskeleton • membrane • microtubule plus-end • protein complex Biological process • G2/M transition of mitotic cell cycle • mitotic cell cycle • organelle organization • spindle organization • mitotic nuclear division • small GTPase mediated signal transduction • establishment or maintenance of microtubule cytoskeleton polarity • RNA transport • centrosome organization • cell division Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	9793	75786
Ensembl	ENSG00000175216	ENSMUSG00000040549
UniProt	Q14008	A2AGT5
RefSeq (mRNA)	NM_001008938	NM_001165989
RefSeq (protein)	NP_001008938	NP_001159461
Location (UCSC)	Chr 11: 46.74 – 46.85 Mb	Chr 2: 91.53 – 91.62 Mb
PubMed search

Cytoskeleton-associated protein 5 is a microtubule-associated protein that in humans is encoded by the CKAP5 gene.^[1][2][3] It is the homolog of the Xenopus protein XMAP215^[4] and is also known as ch-Tog.

It has at least two distinct roles in spindle formation: it protects kinetochore microtubules from depolymerization by MCAK (KIF2C), and ch-Tog plays an essential role in centrosomal microtubule assembly, a function independent of MCAK activity.^[5]

Interactions

CKAP5 has been shown to interact with TACC1.^[6][7]

References

1. Nagase T, Miyajima N, Tanaka A, Sazuka T, Seki N, Sato S, Tabata S, Ishikawa K, Kawarabayasi Y, Kotani H (Jul 1995). "Prediction of the coding sequences of unidentified human genes. III. The coding sequences of 40 new genes (KIAA0081-KIAA0120) deduced by analysis of cDNA clones from human cell line KG-1". DNA Res. 2 (1): 37–43. doi:10.1093/dnares/2.1.37. PMID 7788527.
2. Charrasse S, Mazel M, Taviaux S, Berta P, Chow T, Larroque C (Feb 1996). "Characterization of the cDNA and pattern of expression of a new gene over-expressed in human hepatomas and colonic tumors". Eur. J. Biochem. 234 (2): 406–13. doi:10.1111/j.1432-1033.1995.406_b.x. PMID 8536682.
3. "Entrez Gene: CKAP5 cytoskeleton associated protein 5".
4. Cassimeris L, Morabito J (2004). "TOGp, the human homolog of XMAP215/Dis1, is required for centrosome integrity, spindle pole organization, and bipolar spindle assembly". Mol. Biol. Cell 15 (4): 1580–90. doi:10.1091/mbc.E03-07-0544. PMC 379257. PMID 14718566.
5. Barr AR, Gergely F (2008). "MCAK-independent functions of ch-Tog/XMAP215 in microtubule plus-end dynamics". Mol. Cell. Biol. 28 (23): 7199–211. doi:10.1128/MCB.01040-08. PMC 2593372. PMID 18809577.
6. Conte N, Delaval B, Ginestier C, Ferrand A, Isnardon D, Larroque C, Prigent C, Séraphin B, Jacquemier J, Birnbaum D (Nov 2003). "TACC1-chTOG-Aurora A protein complex in breast cancer". Oncogene 22 (50): 8102–16. doi:10.1038/sj.onc.1206972. PMID 14603251.
7. Lauffart B, Howell SJ, Tasch JE, Cowell JK, Still IH (Apr 2002). "Interaction of the transforming acidic coiled-coil 1 (TACC1) protein with ch-TOG and GAS41/NuBI1 suggests multiple TACC1-containing protein complexes in human cells". Biochem. J. 363 (Pt 1): 195–200. doi:10.1042/0264-6021:3630195. PMC 1222467. PMID 11903063.

Further reading

• Basto R, Gergely F, Draviam VM, Ohkura H, Liley K, Raff JW (2007). "Hsp90 is required to localise cyclin B and Msps/ch-TOG to the mitotic spindle in Drosophila and humans". J. Cell. Sci. 120 (Pt 7): 1278–87. doi:10.1242/jcs.000604. PMID 17376965.
• Kosturko LD, Maggipinto MJ, D'Sa C, Carson JH, Barbarese E (2005). "The microtubule-associated protein tumor overexpressed gene binds to the RNA trafficking protein heterogeneous nuclear ribonucleoprotein A2". Mol. Biol. Cell 16 (4): 1938–47. doi:10.1091/mbc.E04-08-0709. PMC 1073673. PMID 15703215.
• Beausoleil SA, Jedrychowski M, Schwartz D, Elias JE, Villén J, Li J, Cohn MA, Cantley LC, Gygi SP (2004). "Large-scale characterization of HeLa cell nuclear phosphoproteins". Proc. Natl. Acad. Sci. U.S.A. 101 (33): 12130–5. doi:10.1073/pnas.0404720101. PMC 514446. PMID 15302935.
• Cassimeris L, Morabito J (2004). "TOGp, the human homolog of XMAP215/Dis1, is required for centrosome integrity, spindle pole organization, and bipolar spindle assembly". Mol. Biol. Cell 15 (4): 1580–90. doi:10.1091/mbc.E03-07-0544. PMC 379257. PMID 14718566.
• Conte N, Delaval B, Ginestier C, Ferrand A, Isnardon D, Larroque C, Prigent C, Séraphin B, Jacquemier J, Birnbaum D (2003). "TACC1-chTOG-Aurora A protein complex in breast cancer". Oncogene 22 (50): 8102–16. doi:10.1038/sj.onc.1206972. PMID 14603251.
• Gergely F, Draviam VM, Raff JW (2003). "The ch-TOG/XMAP215 protein is essential for spindle pole organization in human somatic cells". Genes Dev. 17 (3): 336–41. doi:10.1101/gad.245603. PMC 195983. PMID 12569123.
• Nakayama M, Kikuno R, Ohara O (2002). "Protein-protein interactions between large proteins: two-hybrid screening using a functionally classified library composed of long cDNAs". Genome Res. 12 (11): 1773–84. doi:10.1101/gr.406902. PMC 187542. PMID 12421765.
• Lauffart B, Howell SJ, Tasch JE, Cowell JK, Still IH (2002). "Interaction of the transforming acidic coiled-coil 1 (TACC1) protein with ch-TOG and GAS41/NuBI1 suggests multiple TACC1-containing protein complexes in human cells". Biochem. J. 363 (Pt 1): 195–200. doi:10.1042/0264-6021:3630195. PMC 1222467. PMID 11903063.
• Bonaldo MF, Lennon G, Soares MB (1996). "Normalization and subtraction: two approaches to facilitate gene discovery". Genome Res. 6 (9): 791–806. doi:10.1101/gr.6.9.791. PMID 8889548.
• Nakamura S, Grigoriev I, Nogi T, Hamaji T, Cassimeris L, Mimori-Kiyosue Y (2012). "Dissecting the nanoscale distributions and functions of microtubule-end-binding proteins EB1 and ch-TOG in interphase HeLa cells". PLoS ONE 7 (12): e51442. doi:10.1371/journal.pone.0051442. PMID 23251535.
• Zanic M, Widlund PO, Hyman AA, Howard J (2013). "Synergy between XMAP215 and EB1 increases microtubule growth rates to physiological levels". Nat. Cell Biol. 15 (6): 688–93. doi:10.1038/ncb2744. PMID 23666085.