ID:QKI_HUMAN DESCRIPTION: RecName: Full=Protein quaking; Short=Hqk; Short=HqkI; FUNCTION: RNA-binding protein that plays a central role in myelinization. Binds to the 5'-NACUAAY-N(1,20)-UAAY-3' RNA core sequence. Acts by regulating pre-mRNA splicing, mRNA export, mRNA stability and protein translation. Required to protect and promote stability of mRNAs such as MBP and CDKN1B. Regulator of oligodendrocyte differentiation and maturation in the brain that may play a role in myelin and oligodendrocyte dysfunction in schizophrenia. Participates in mRNA transport by regulating the nuclear export of MBP mRNA. Also involved in regulation of mRNA splicing of MAG pre-mRNA. Acts as a translational repressor (By similarity). SUBUNIT: Homodimer. Does not require RNA to homodimerize. Able to heterodimerize with BICC1 (By similarity). INTERACTION: P61978:HNRNPK; NbExp=3; IntAct=EBI-945792, EBI-304185; Q15365:PCBP1; NbExp=2; IntAct=EBI-945792, EBI-946095; P26599:PTBP1; NbExp=2; IntAct=EBI-945792, EBI-350540; Q9NWB1:RBFOX1; NbExp=2; IntAct=EBI-945792, EBI-945906; O43251:RBFOX2; NbExp=2; IntAct=EBI-945792, EBI-746056; Q93062:RBPMS; NbExp=2; IntAct=EBI-945792, EBI-740322; SUBCELLULAR LOCATION: Nucleus (By similarity). Cytoplasm (By similarity). TISSUE SPECIFICITY: Expressed in the frontal cortex of brain. Down-regulated in the brain of schizophrenic patients. PTM: Methylated by PRMT1 (By similarity). PTM: Tyrosine phosphorylated at its C-terminus, probably by FYN. Phosphorylation leads to decreased mRNA-binding affinity, affecting transport and/or stabilization of MBP mRNA (By similarity). SIMILARITY: Contains 1 KH domain. SEQUENCE CAUTION: Sequence=AAF63412.1; Type=Miscellaneous discrepancy; Note=Chimeric cDNA; Sequence=AAF63413.1; Type=Erroneous initiation; Note=Translation N-terminally shortened; Sequence=AAF63413.1; Type=Miscellaneous discrepancy; Note=Cloning artifact in N-terminus; Sequence=AAF63414.1; Type=Erroneous initiation; Note=Translation N-terminally shortened; Sequence=AAF63414.1; Type=Miscellaneous discrepancy; Note=Cloning artifact in N-terminus; Sequence=AAF63415.1; Type=Miscellaneous discrepancy; Note=Chimeric cDNA; Sequence=AAF63416.1; Type=Miscellaneous discrepancy; Note=Chimeric cDNA; Sequence=AAF63417.1; Type=Erroneous initiation; Note=Translation N-terminally shortened; Sequence=AAF63417.1; Type=Miscellaneous discrepancy; Note=Cloning artifact in N-terminus; Sequence=BAB55032.1; Type=Erroneous initiation; Note=Translation N-terminally extended;
The RNAfold program from the Vienna RNA Package is used to perform the secondary structure predictions and folding calculations. The estimated folding energy is in kcal/mol. The more negative the energy, the more secondary structure the RNA is likely to have.
Pfam Domains: PF00013 - KH domain PF16544 - Homodimerisation region of STAR domain protein PF16551 - Putative nuclear localisation signal of quaking
SCOP Domains: 54791 - Eukaryotic type KH-domain (KH-domain type I) 54814 - Prokaryotic type KH domain (KH-domain type II)
ModBase Predicted Comparative 3D Structure on Q96PU8
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Orthologous Genes in Other Species
Orthologies between human, mouse, and rat are computed by taking the best BLASTP hit, and filtering out non-syntenic hits. For more distant species reciprocal-best BLASTP hits are used. Note that the absence of an ortholog in the table below may reflect incomplete annotations in the other species rather than a true absence of the orthologous gene.
LF210690 - JP 2014500723-A/18193: Polycomb-Associated Non-Coding RNAs. AB067799 - Homo sapiens mRNA for RNA binding protein HQK-6, complete cds. AB067800 - Homo sapiens mRNA for RNA binding protein HQK-7, complete cds. AB067801 - Homo sapiens mRNA for RNA binding protein HQK-7B, complete cds. AB067798 - Homo sapiens mRNA for RNA binding protein HQK-5, complete cds. AF272349 - Homo sapiens quaking protein 3 (QK3) mRNA, partial cds. BC019917 - Homo sapiens quaking homolog, KH domain RNA binding (mouse), mRNA (cDNA clone MGC:29987 IMAGE:3921310), complete cds. AF142418 - Homo sapiens QUAKING isoform 2 (QUAKING) mRNA, complete cds. AF142422 - Homo sapiens QUAKING isoform 3 (QUAKING) mRNA, complete cds. AF142419 - Homo sapiens QUAKING isoform 6 (QUAKING) mRNA, complete cds. AB590716 - Synthetic construct DNA, clone: pFN21AE1824, Homo sapiens QKI gene for quaking homolog, KH domain RNA binding, without stop codon, in Flexi system. EU832828 - Synthetic construct Homo sapiens clone HAIB:100067857; DKFZo008F1233 quaking homolog, KH domain RNA binding (mouse) protein (QKI) gene, encodes complete protein. GQ129383 - Synthetic construct Homo sapiens clone HAIB:100068518; DKFZo004F1234 quaking homolog, KH domain RNA binding (mouse) protein (QKI) gene, partial cds. HQ447847 - Synthetic construct Homo sapiens clone IMAGE:100071191; CCSB008168_01 quaking homolog, KH domain RNA binding (mouse) (QKI) gene, encodes complete protein. KJ892770 - Synthetic construct Homo sapiens clone ccsbBroadEn_02164 QKI gene, encodes complete protein. DQ323998 - Homo sapiens QKI mRNA, complete cds, alternatively spliced. AF142417 - Homo sapiens QUAKING isoform 1 (QUAKING) mRNA, complete cds. AF142420 - Homo sapiens QUAKING isoform 4 (QUAKING) mRNA, complete cds. AF142421 - Homo sapiens QUAKING isoform 5 (QUAKING) mRNA, complete cds. AY780788 - Homo sapiens quaking isoform mRNA, complete cds, alternatively spliced. AK027309 - Homo sapiens cDNA FLJ14403 fis, clone HEMBA1003805, highly similar to Mus musculus KH domain RNA binding protein QKI-5A mRNA. BC012222 - Homo sapiens quaking homolog, KH domain RNA binding (mouse), mRNA (cDNA clone IMAGE:3450704), partial cds. AK295235 - Homo sapiens cDNA FLJ52494 complete cds, highly similar to Mus musculus quaking (Qk), mRNA. AK308784 - Homo sapiens cDNA, FLJ98825. MA446267 - JP 2018138019-A/18193: Polycomb-Associated Non-Coding RNAs. JD406108 - Sequence 387132 from Patent EP1572962. JD389289 - Sequence 370313 from Patent EP1572962. JD395180 - Sequence 376204 from Patent EP1572962. JD407226 - Sequence 388250 from Patent EP1572962. JC506674 - Sequence 42 from Patent EP2733220. JC737786 - Sequence 42 from Patent WO2014075939. JC506688 - Sequence 56 from Patent EP2733220. JC737800 - Sequence 56 from Patent WO2014075939. JC506661 - Sequence 29 from Patent EP2733220. JC506666 - Sequence 34 from Patent EP2733220. JC737773 - Sequence 29 from Patent WO2014075939. JC737778 - Sequence 34 from Patent WO2014075939. JC506684 - Sequence 52 from Patent EP2733220. JC737796 - Sequence 52 from Patent WO2014075939. LF340164 - JP 2014500723-A/147667: Polycomb-Associated Non-Coding RNAs. MA575741 - JP 2018138019-A/147667: Polycomb-Associated Non-Coding RNAs. LF340136 - JP 2014500723-A/147639: Polycomb-Associated Non-Coding RNAs. LF340135 - JP 2014500723-A/147638: Polycomb-Associated Non-Coding RNAs. KY966286 - Homo sapiens cell line 93T449 QKI/LOC100132735 fusion mRNA, partial sequence. KY966311 - Homo sapiens cell line 94T778 QKI/LOC100132735 fusion mRNA, partial sequence. MA575713 - JP 2018138019-A/147639: Polycomb-Associated Non-Coding RNAs. MA575712 - JP 2018138019-A/147638: Polycomb-Associated Non-Coding RNAs. LF340121 - JP 2014500723-A/147624: Polycomb-Associated Non-Coding RNAs. AL050218 - Homo sapiens mRNA; cDNA DKFZp586I0923 (from clone DKFZp586I0923). LF340120 - JP 2014500723-A/147623: Polycomb-Associated Non-Coding RNAs. LF340111 - JP 2014500723-A/147614: Polycomb-Associated Non-Coding RNAs. JD449033 - Sequence 430057 from Patent EP1572962. JD419877 - Sequence 400901 from Patent EP1572962. JD182320 - Sequence 163344 from Patent EP1572962. LF340110 - JP 2014500723-A/147613: Polycomb-Associated Non-Coding RNAs. JD358753 - Sequence 339777 from Patent EP1572962. JD037551 - Sequence 18575 from Patent EP1572962. JD433878 - Sequence 414902 from Patent EP1572962. JD506756 - Sequence 487780 from Patent EP1572962. JD299439 - Sequence 280463 from Patent EP1572962. JD286268 - Sequence 267292 from Patent EP1572962. JD313117 - Sequence 294141 from Patent EP1572962. JD503711 - Sequence 484735 from Patent EP1572962. JD261024 - Sequence 242048 from Patent EP1572962. JD325491 - Sequence 306515 from Patent EP1572962. JD417287 - Sequence 398311 from Patent EP1572962. JD133382 - Sequence 114406 from Patent EP1572962. JD180520 - Sequence 161544 from Patent EP1572962. JD269722 - Sequence 250746 from Patent EP1572962. LF340109 - JP 2014500723-A/147612: Polycomb-Associated Non-Coding RNAs. JD297246 - Sequence 278270 from Patent EP1572962. JD095561 - Sequence 76585 from Patent EP1572962. LF340108 - JP 2014500723-A/147611: Polycomb-Associated Non-Coding RNAs. LF340107 - JP 2014500723-A/147610: Polycomb-Associated Non-Coding RNAs. LF210689 - JP 2014500723-A/18192: Polycomb-Associated Non-Coding RNAs. AK096701 - Homo sapiens cDNA FLJ39382 fis, clone PERIC2000473. LF340106 - JP 2014500723-A/147609: Polycomb-Associated Non-Coding RNAs. LF340105 - JP 2014500723-A/147608: Polycomb-Associated Non-Coding RNAs. MA575698 - JP 2018138019-A/147624: Polycomb-Associated Non-Coding RNAs. MA575697 - JP 2018138019-A/147623: Polycomb-Associated Non-Coding RNAs. MA575688 - JP 2018138019-A/147614: Polycomb-Associated Non-Coding RNAs. MA575687 - JP 2018138019-A/147613: Polycomb-Associated Non-Coding RNAs. MA575686 - JP 2018138019-A/147612: Polycomb-Associated Non-Coding RNAs. MA575685 - JP 2018138019-A/147611: Polycomb-Associated Non-Coding RNAs. MA575684 - JP 2018138019-A/147610: Polycomb-Associated Non-Coding RNAs. MA446266 - JP 2018138019-A/18192: Polycomb-Associated Non-Coding RNAs. MA575683 - JP 2018138019-A/147609: Polycomb-Associated Non-Coding RNAs. MA575682 - JP 2018138019-A/147608: Polycomb-Associated Non-Coding RNAs.
Biochemical and Signaling Pathways
Reactome (by CSHL, EBI, and GO)
Protein Q96PU8 (Reactome details) participates in the following event(s):
R-HSA-6802927 BRAF and RAF fusion mutant dimers are phosphorylated R-HSA-6802934 p-BRAF and RAF fusion dimers bind MAP2Ks and MAPKs R-HSA-6802932 Dissociation of BRAF/RAF fusion complex R-HSA-6802933 p-BRAF and RAF fusion dimers phosphorylate MAP2Ks R-HSA-6802935 MAPKs are phosphorylated downstream of BRAF and RAF fusion dimers R-HSA-6802952 Signaling by BRAF and RAF fusions R-HSA-6802957 Oncogenic MAPK signaling R-HSA-5663202 Diseases of signal transduction R-HSA-1643685 Disease