Biology:INCENP

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Short description: Protein-coding gene in the species Homo sapiens


A representation of the 3D structure of the protein myoglobin showing turquoise α-helices.
Generic protein structure example
Chromosome passenger complex (CPC) protein INCENP N terminal
Identifiers
SymbolINCENP_N
PfamPF12178
InterProIPR022006
Inner centromere protein, ARK binding region
Identifiers
SymbolINCENP_ARK-bind
PfamPF03941
InterProIPR005635

Inner centromere protein is a protein that in humans is encoded by the INCENP gene.[1][2][3] It is a regulatory protein in the chromosome passenger complex (CPC). It is involved in regulation of the catalytic proteins Aurora B and Aurora C.[4][5][6] It acts in association with two other proteins - Survivin and Borealin. These proteins form a tight three-helical bundle. The N-terminal domain of INCENP is the domain involved in formation of this three-helical bundle while its C-terminal domain is responsible for the interaction with Aurora B.[7][6]

In mammalian cells, two broad groups of centromere-interacting proteins have been described: constitutively binding centromere proteins and 'passenger' (or transiently interacting) proteins.[8] The constitutive proteins include CENPA (centromere protein A), CENPB, CENPC1, and CENPD.

The term 'passenger proteins' encompasses a broad collection of proteins that localize to the centromere during specific stages of the cell cycle.[9] These include CENPE; MCAK; KID; cytoplasmic dynein (e.g., DYNC1H1); CliPs (e.g. CLIP1); and CENPF/mitosin (CENPF). The inner centromere proteins (INCENPs),[1] the initial members of the passenger protein group, display a broad localization along chromosomes in the early stages of mitosis but gradually become concentrated at centromeres as the cell cycle progresses into mid-metaphase. During telophase, the proteins are located within the midbody in the intercellular bridge, where they are discarded after cytokinesis.[3][10]

Interactions

INCENP has been shown to interact with H2AFZ,[11] Survivin[12] and CDCA8.[13] The ARK binding region has been found to be necessary and sufficient for binding to aurora-related kinase. This interaction has been implicated in the coordination of chromosome segregation with cell division in yeast.[14]

References

  1. 1.0 1.1 "Analysis of the distribution of the INCENPs throughout mitosis reveals the existence of a pathway of structural changes in the chromosomes during metaphase and early events in cleavage furrow formation". J Cell Sci 98 (4): 443–61. Sep 1991. doi:10.1242/jcs.98.4.443. PMID 1860899. 
  2. "Human INCENP colocalizes with the Aurora-B/AIRK2 kinase on chromosomes and is overexpressed in tumour cells". Chromosoma 110 (2): 65–74. Jul 2001. doi:10.1007/s004120100130. PMID 11453556. 
  3. 3.0 3.1 "Entrez Gene: INCENP inner centromere protein antigens 135/155kDa". https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=3619. 
  4. Sasai, Kaori; Katayama, Hiroshi; Hawke, David H; Sen, Subrata (2016-01-01). "Aurora-C Interactions with Survivin and INCENP Reveal Shared and Distinct Features Compared with Aurora-B Chromosome Passenger Protein Complex". PLOS ONE 11 (6): e0157305. doi:10.1371/journal.pone.0157305. ISSN 1932-6203. PMID 27332895. Bibcode2016PLoSO..1157305S. 
  5. Li, Xiangyu; Sakashita, Gyosuke; Matsuzaki, Hideki; Sugimoto, Kenji; Kimura, Keiji; Hanaoka, Fumio; Taniguchi, Hisaaki; Furukawa, Koichi et al. (2004-11-01). "Direct association with inner centromere protein (INCENP) activates the novel chromosomal passenger protein, Aurora-C". The Journal of Biological Chemistry 279 (45): 47201–47211. doi:10.1074/jbc.m403029200. ISSN 1083-351X. PMID 15316025. 
  6. 6.0 6.1 Honda, Reiko; Körner, Roman; Nigg, Erich A (2003-08-01). "Exploring the functional interactions between Aurora B, INCENP, and survivin in mitosis". Molecular Biology of the Cell 14 (8): 3325–3341. doi:10.1091/mbc.e02-11-0769. ISSN 1939-4586. PMID 12925766. 
  7. Jeyaprakash, A. Arockia; Klein, Ulf R.; Lindner, Doris; Ebert, Judith; Nigg, Erich A.; Conti, Elena (2007-10-19). "Structure of a Survivin–Borealin–INCENP Core Complex Reveals How Chromosomal Passengers Travel Together" (in en). Cell 131 (2): 271–285. doi:10.1016/j.cell.2007.07.045. ISSN 0092-8674. PMID 17956729. 
  8. Choo, K. H. Andy (1997). The centromere. Oxford [Oxfordshire]: Oxford University Press. ISBN 978-0-19-857780-5. https://archive.org/details/centromere0000choo. 
  9. "Role of nonhistone proteins in the chromosomal events of mitosis". FASEB J. 8 (12): 947–56. September 1994. doi:10.1096/fasebj.8.12.8088460. PMID 8088460. 
  10. "Defective chromosome segregation, microtubule bundling and nuclear bridging in inner centromere protein gene (Incenp)-disrupted mice". Hum. Mol. Genet. 8 (7): 1145–55. July 1999. doi:10.1093/hmg/8.7.1145. PMID 10369859. 
  11. "Pericentric heterochromatin becomes enriched with H2A.Z during early mammalian development". EMBO J. 22 (7): 1599–607. April 2003. doi:10.1093/emboj/cdg160. PMID 12660166. 
  12. "INCENP is required for proper targeting of Survivin to the centromeres and the anaphase spindle during mitosis". Curr. Biol. 11 (11): 886–90. June 2001. doi:10.1016/S0960-9822(01)00238-X. PMID 11516652. 
  13. "Borealin: a novel chromosomal passenger required for stability of the bipolar mitotic spindle". J. Cell Biol. 166 (2): 179–91. July 2004. doi:10.1083/jcb.200404001. PMID 15249581. 
  14. "The Schizosaccharomyces pombe aurora-related kinase Ark1 interacts with the inner centromere protein Pic1 and mediates chromosome segregation and cytokinesis". Mol. Biol. Cell 13 (4): 1132–43. April 2002. doi:10.1091/mbc.01-07-0330. PMID 11950927. 

Further reading

This article incorporates text from the public domain Pfam and InterPro: IPR005635
This article incorporates text from the public domain Pfam and InterPro: IPR022006