QKI

QKI, KH domain containing, RNA binding
PDB rendering based on 2bl5.
Available structures PDB Ortholog search: PDBe, RCSB List of PDB id codes 4JVH​
Identifiers
Symbols	QKI ; Hqk; QK; QK1; QK3; hqkI
External IDs	OMIM: 609590 MGI: 97837 HomoloGene: 11059 GeneCards: QKI Gene
Gene ontology Molecular function • mRNA binding • protein binding • SH3 domain binding • poly(A) RNA binding Cellular component • nucleus • cytoplasm Biological process • vasculogenesis • mRNA processing • spermatid development • RNA splicing • positive regulation of gene expression • myelination • muscle cell differentiation • long-chain fatty acid biosynthetic process • mRNA transport • 3'-UTR-mediated mRNA destabilization Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	9444	19317
Ensembl	ENSG00000112531	ENSMUSG00000062078
UniProt	Q96PU8	Q9QYS9
RefSeq (mRNA)	NM_001301085	NM_001159516
RefSeq (protein)	NP_001288014	NP_001152988
Location (UCSC)	Chr 6: 163.41 – 163.58 Mb	Chr 17: 10.21 – 10.32 Mb
PubMed search

Quaking homolog, KH domain RNA binding (mouse), also known as QKI, is a protein which in humans is encoded by the QKI gene.^[1][2]

QKI belongs to a family of RNA-binding proteins called STAR proteins for Signal Transduction and Activation of RNA.^[3] They have an HNRNPK homology (KH) domain embedded in a 200-amino acid region called the GSG domain. Other members of this family include SAM68 (KHDRBS1) and SF1 .^[4] Two more new members are KHDRBS3^[5] and KHDRBS2.^[6]

The QKI gene is implicated as being important in schizophrenia,^[7][8] and QKI controls translation of many oligodendrocyte-related genes.

References

1. "Entrez Gene: QKI quaking homolog, KH domain RNA binding (mouse)".
2. Saccomanno L, Loushin C, Jan E, Punkay E, Artzt K, Goodwin EB (October 1999). "The STAR protein QKI-6 is a translational repressor". Proc. Natl. Acad. Sci. U.S.A. 96 (22): 12605–10. Bibcode:1999PNAS...9612605S. doi:10.1073/pnas.96.22.12605. PMC 23011. PMID 10535969.
3. Vernet C, Artzt K (December 1997). "STAR, a gene family involved in signal transduction and activation of RNA". Trends Genet. 13 (12): 479–84. doi:10.1016/S0168-9525(97)01269-9. PMID 9433137.
4. Chen T, Richard S (August 1998). "Structure-function analysis of Qk1: a lethal point mutation in mouse quaking prevents homodimerization". Mol. Cell. Biol. 18 (8): 4863–71. PMC 109071. PMID 9671495.
5. Venables JP, Vernet C, Chew SL, Elliott DJ, Cowmeadow RB, Wu J, Cooke HJ, Artzt K, Eperon IC (June 1999). "T-STAR/ETOILE: a novel relative of SAM68 that interacts with an RNA-binding protein implicated in spermatogenesis". Hum. Mol. Genet. 8 (6): 959–69. doi:10.1093/hmg/8.6.959. PMID 10332027.
6. Wang L, Xu J, Zeng L, Ye X, Wu Q, Dai J, Ji C, Gu S, Zhao C, Xie Y, Mao Y (December 2002). "Cloning and characterization of a novel human STAR domain containing cDNA KHDRBS2". Mol. Biol. Rep. 29 (4): 369–75. doi:10.1023/A:1021246109101. PMID 12549823.
7. Aberg K, Saetre P, Jareborg N, Jazin E (May 2006). "Human QKI, a potential regulator of mRNA expression of human oligodendrocyte-related genes involved in schizophrenia". Proc. Natl. Acad. Sci. U.S.A. 103 (19): 7482–7. Bibcode:2006PNAS..103.7482A. doi:10.1073/pnas.0601213103. PMC 1464365. PMID 16641098.
8. Haroutunian V, Katsel P, Dracheva S, Davis KL (October 2006). "The human homolog of the QKI gene affected in the severe dysmyelination "quaking" mouse phenotype: downregulated in multiple brain regions in schizophrenia". Am J Psychiatry 163 (10): 1834–7. doi:10.1176/appi.ajp.163.10.1834. PMID 17012699.

Further reading

• Robertson NG, Khetarpal U, Gutiérrez-Espeleta GA, et al. (1995). "Isolation of novel and known genes from a human fetal cochlear cDNA library using subtractive hybridization and differential screening.". Genomics 23 (1): 42–50. doi:10.1006/geno.1994.1457. PMID 7829101.
• Saccomanno L, Loushin C, Jan E, et al. (1999). "The STAR protein QKI-6 is a translational repressor". Proc. Natl. Acad. Sci. U.S.A. 96 (22): 12605–10. Bibcode:1999PNAS...9612605S. doi:10.1073/pnas.96.22.12605. PMC 23011. PMID 10535969.
• Li ZZ, Kondo T, Murata T, et al. (2002). "Expression of Hqk encoding a KH RNA binding protein is altered in human glioma.". Jpn. J. Cancer Res. 93 (2): 167–77. doi:10.1111/j.1349-7006.2002.tb01255.x. PMID 11856480.
• Wu JI, Reed RB, Grabowski PJ, Artzt K (2002). "Function of quaking in myelination: regulation of alternative splicing". Proc. Natl. Acad. Sci. U.S.A. 99 (7): 4233–8. Bibcode:2002PNAS...99.4233W. doi:10.1073/pnas.072090399. PMC 123631. PMID 11917126.
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. Bibcode:2002PNAS...9916899M. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Moore FL, Jaruzelska J, Fox MS, et al. (2003). "Human Pumilio-2 is expressed in embryonic stem cells and germ cells and interacts with DAZ (Deleted in AZoospermia) and DAZ-like proteins". Proc. Natl. Acad. Sci. U.S.A. 100 (2): 538–43. Bibcode:2003PNAS..100..538M. doi:10.1073/pnas.0234478100. PMC 141031. PMID 12511597.
• Côté J, Boisvert FM, Boulanger MC, et al. (2003). "Sam68 RNA binding protein is an in vivo substrate for protein arginine N-methyltransferase 1.". Mol. Biol. Cell 14 (1): 274–87. doi:10.1091/mbc.E02-08-0484. PMC 140244. PMID 12529443.
• Mungall AJ, Palmer SA, Sims SK, et al. (2003). "The DNA sequence and analysis of human chromosome 6.". Nature 425 (6960): 805–11. doi:10.1038/nature02055. PMID 14574404.
• Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs.". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
• Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
• Rual JF, Venkatesan K, Hao T, et al. (2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature 437 (7062): 1173–8. Bibcode:2005Natur.437.1173R. doi:10.1038/nature04209. PMID 16189514.
• Ichimura K, Mungall AJ, Fiegler H, et al. (2006). "Small regions of overlapping deletions on 6q26 in human astrocytic tumours identified using chromosome 6 tile path array-CGH.". Oncogene 25 (8): 1261–71. doi:10.1038/sj.onc.1209156. PMC 2760128. PMID 16205629.
• Aberg K, Saetre P, Lindholm E, et al. (2006). "Human QKI, a new candidate gene for schizophrenia involved in myelination.". Am. J. Med. Genet. B Neuropsychiatr. Genet. 141 (1): 84–90. doi:10.1002/ajmg.b.30243. PMID 16342280.
• Aberg K, Saetre P, Jareborg N, Jazin E (2006). "Human QKI, a potential regulator of mRNA expression of human oligodendrocyte-related genes involved in schizophrenia". Proc. Natl. Acad. Sci. U.S.A. 103 (19): 7482–7. Bibcode:2006PNAS..103.7482A. doi:10.1073/pnas.0601213103. PMC 1464365. PMID 16641098.
• Lim J, Hao T, Shaw C, et al. (2006). "A protein-protein interaction network for human inherited ataxias and disorders of Purkinje cell degeneration.". Cell 125 (4): 801–14. doi:10.1016/j.cell.2006.03.032. PMID 16713569.
• Haroutunian V, Katsel P, Dracheva S, Davis KL (2006). "The human homolog of the QKI gene affected in the severe dysmyelination "quaking" mouse phenotype: downregulated in multiple brain regions in schizophrenia.". The American Journal of Psychiatry 163 (10): 1834–7. doi:10.1176/appi.ajp.163.10.1834. PMID 17012699.
• Zhao L, Tian D, Xia M, et al. (2006). "Rescuing qkV dysmyelination by a single isoform of the selective RNA-binding protein QKI.". J. Neurosci. 26 (44): 11278–86. doi:10.1523/JNEUROSCI.2677-06.2006. PMID 17079655.