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KNL1

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(Redirected from CASC5)
KNL1
Identifiers
AliasesKNL1, AF15Q14, CT29, D40, PPP1R55, Spc7, hKNL-1, hSpc105, CASC5, MCPH4, cancer susceptibility candidate 5, kinetochore scaffold 1
External IDsOMIM: 609173; MGI: 1923714; GeneCards: KNL1
Available structures
PDBOrtholog search: PDBe RCSB
Orthologs
DatabasesNCBI: entry; OMA: entry
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_144508
NM_170589
NM_020380

NM_029617
NM_001362732

RefSeq (protein)

NP_653091
NP_733468

NP_083893
NP_001349661

Location (UCSC)Chr 15: 40.59 – 40.66 MbChr 2: 118.88 – 118.94 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

KNL1 (kinetochore scaffold 1, a.k.a. CASC5) is a protein that is encoded by the KNL1 gene in humans.[5][6][7][8]

Function

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KNL1 is part of the outer kinetochore. It is a part of KMN network of proteins together with MIS12, and NDC80.[9]

KNL1 is involved in microtubule attachment to chromosome centromeres and in the activation of the spindle checkpoint during mitosis. The CASC5 gene is upregulated in the areas of cell proliferation surrounding the ventricles during fetal brain development.[10]

Interactions

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CASC5 has been shown to interact with MIS12,[11][12] BUB1, BUBR1 and ZWINT-1.[10]

Polymorphisms

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Homozygous polymorphisms in the CASC5 gene have been seen in patients with autosomal recessive primary microcephaly (MCPH). The mutation resulted in the skipping of exon 18 transcription, causing a frameshift and the production of a truncated protein. This truncation inhibits the binding ability of MIS12.[10]

References

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  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000137812 – Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000027326 – Ensembl, May 2017
  3. ↑ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ↑ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ↑ "Entrez Gene: CASC5 cancer susceptibility candidate 5".
  6. ↑ Hayette S, Tigaud I, Vanier A, Martel S, Corbo L, Charrin C, Beillard E, Deleage G, Magaud JP, Rimokh R (September 2000). "AF15q14, a novel partner gene fused to the MLL gene in an acute myeloid leukaemia with a t(11;15)(q23;q14)". Oncogene. 19 (38): 4446–50. doi:10.1038/sj.onc.1203789. PMID 10980622. S2CID 8540747.
  7. ↑ Wei G, Takimoto M, Yoshida I, Mao PZ, Koya RC, Miura T, Kuzumaki N (Jun 2000). "Chromosomal assignment of a novel human gene D40". Nucleic Acids Symposium Series. 42 (42): 71–2. doi:10.1093/nass/42.1.71. PMID 10780384.
  8. ↑ Cheeseman IM, Hori T, Fukagawa T, Desai A (February 2008). "KNL1 and the CENP-H/I/K complex coordinately direct kinetochore assembly in vertebrates". Molecular Biology of the Cell. 19 (2): 587–94. doi:10.1091/mbc.E07-10-1051. PMC 2230600. PMID 18045986.
  9. ↑ D'Archivio S, Wickstead B (February 2017). "Trypanosome outer kinetochore proteins suggest conservation of chromosome segregation machinery across eukaryotes". The Journal of Cell Biology. 216 (2): 379–391. doi:10.1083/jcb.201608043. PMC 5294786. PMID 28034897.
  10. 1 2 3 Genin A, Desir J, Lambert N, Biervliet M, Van Der Aa N, Pierquin G, Killian A, Tosi M, Urbina M, Lefort A, Libert F, Pirson I, Abramowicz M (December 2012). "Kinetochore KMN network gene CASC5 mutated in primary microcephaly". Human Molecular Genetics. 21 (24): 5306–17. doi:10.1093/hmg/dds386. PMID 22983954.
  11. ↑ Cheeseman IM, Niessen S, Anderson S, Hyndman F, Yates JR, Oegema K, Desai A (September 2004). "A conserved protein network controls assembly of the outer kinetochore and its ability to sustain tension". Genes & Development. 18 (18): 2255–68. doi:10.1101/gad.1234104. PMC 517519. PMID 15371340.
  12. ↑ Obuse C, Iwasaki O, Kiyomitsu T, Goshima G, Toyoda Y, Yanagida M (November 2004). "A conserved Mis12 centromere complex is linked to heterochromatic HP1 and outer kinetochore protein Zwint-1". Nature Cell Biology. 6 (11): 1135–41. doi:10.1038/ncb1187. PMID 15502821. S2CID 39408000.
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Further reading

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