Paralogue Annotation for KCNQ1 residue 280

Residue details

Gene: KCNQ1
Reference Sequences: LRG: LRG_287, Ensembl variant: ENST00000155840 / ENSP00000155840
Amino Acid Position: 280
Reference Amino Acid: V - Valine
Protein Domain: Transmembrane/Linker/Pore


Paralogue Variants mapped to KCNQ1 residue 280

ParalogueVariantAssociated DiseaseMapping QualityConsensusPubmed
KCNQ2V250GEpilepsy, benign neonatalHigh9 11690625

To assess whether the paralogue annotation here confidently predicts that variation at this residue is pathogenic, it is important to check the reports in the Pubmed links above to ascertain that the mutations in these paralogues have been proved likely to be disease-causing. It is also important to check that the direction of effect of the variant in the paralogue is compatible with your observed phenotype in KCNQ1.



KCNQ1LLGSVVFIHRQELITTLYIGFLGLIFSSYF>V<YLAEKDAVN-----ESGRVEFGSYADALWW305
KCNQ2LLGSVVYAHSKELVTAWYIGFLCLILASFL>V<YLAEKGE----------NDHFDTYADALWW270
KCNQ3LLGSAICAHSKELITAWYIGFLTLILSSFL>V<YLVEKDVPEVDAQGEEMKEEFETYADALWW309
KCNQ4LLGSVVYAHSKELITAWYIGFLVLIFASFL>V<YLAEKDA----------NSDFSSYADSLWW276
KCNQ5LLGSVVYAHSKELITAWYIGFLVLIFSSFL>V<YLVEKDA----------NKEFSTYADALWW304
KCNA1ILGQTLKASMRELGLLIFFLFIGVILFSSA>V<YFAEAEE---------AESHFSSIPDAFWW365
KCNA10ILGQTLKASMRELGLLIFFLFIGVILFSSA>V<YFAEVDE---------PESHFSSIPDGFWW414
KCNA2ILGQTLKASMRELGLLIFFLFIGVILFSSA>V<YFAEADE---------RESQFPSIPDAFWW367
KCNA3ILGQTLKASMRELGLLIFFLFIGVILFSSA>V<YFAEADD---------PTSGFSSIPDAFWW437
KCNA4ILGHTLRASMRELGLLIFFLFIGVILFSSA>V<YFAEADE---------PTTHFQSIPDAFWW517
KCNA5ILGKTLQASMRELGLLIFFLFIGVILFSSA>V<YFAEADN---------QGTHFSSIPDAFWW473
KCNA6ILGKTLQASMRELGLLIFFLFIGVILFSSA>V<YFAEADD---------DDSLFPSIPDAFWW415
KCNA7ILGQTLRASMRELGLLIFFLFIGVVLFSSA>V<YFAEVDR---------VDSHFTSIPESFWW351
KCNB1SLGFTLRRSYNELGLLILFLAMGIMIFSSL>V<FFAEKDE---------DDTKFKSIPASFWW370
KCNB2SLGFTLRRSYNELGLLILFLAMGIMIFSSL>V<FFAEKDE---------DATKFTSIPASFWW374
KCNC1VLGHTLRASTNEFLLLIIFLALGVLIFATM>I<YYAERIGAQPNDPSASEHTHFKNIPIGFWW393
KCNC2VLGHTLRASTNEFLLLIIFLALGVLIFATM>I<YYAERVGAQPNDPSASEHTQFKNIPIGFWW430
KCNC3VLGHTLRASTNEFLLLIIFLALGVLIFATM>I<YYAERIGADPDDILGSNHTYFKNIPIGFWW496
KCNC4VLGHTLRASTNEFLLLIIFLALGVLIFATM>I<YYAERIGARPSDPRGNDHTDFKNIPIGFWW429
KCND1ILGYTLKSCASELGFLLFSLTMAIIIFATV>M<FYAEKGT---------NKTNFTSIPAAFWY365
KCND2ILGYTLKSCASELGFLLFSLTMAIIIFATV>M<FYAEKGS---------SASKFTSIPAAFWY363
KCND3ILGYTLKSCASELGFLLFSLTMAIIIFATV>M<FYAEKGS---------SASKFTSIPASFWY360
KCNF1TLTYALKRSFKELGLLLMYLAVGIFVFSAL>G<YTMEQSH---------PETLFKSIPQSFWW363
KCNG1TLGLTARRCTREFGLLLLFLCVAIALFAPL>L<YVIENEM-----A---DSPEFTSIPACYWW417
KCNG2SLGLTMRRCAREFGLLLLFLCVAMALFAPL>V<HLAEREL-----G---ARRDFSSVPASYWW362
KCNG3TLGLTLKRCYREMVMLLVFICVAMAIFSAL>S<QLLEHGL-----DLETSNKDFTSIPAACWW366
KCNG4TLGLTVRRCTREFGLLLLFLAVAITLFSPL>V<YVAEKES-----G---RVLEFTSIPASYWW411
KCNS1SLGATLKHSYREVGILLLYLAVGVSVFSGV>A<YTAEKEE----------DVGFNTIPACWWW414
KCNS2SLGATLKYSYKEVGLLLLYLSVGISIFSVV>A<YTIEKEE----------NEGLATIPACWWW367
KCNS3SLGATLRHSYHEVGLLLLFLSVGISIFSVL>I<YSVEKDD---------HTSSLTSIPICWWW363
KCNV1SLGMTITQCYEEVGLLLLFLSVGISIFSTV>E<YFAEQSI---------PDTTFTSVPCAWWW385
KCNV2AFGFTLRQCYQQVGCLLLFIAMGIFTFSAA>V<YSVEHDV---------PSTNFTTIPHSWWW450
cons                              > <                              

See full Alignment of Paralogues


Known Variants in KCNQ1

ProteinCDSDisease ClassificationDiseasedbSNP linksEffect Prediction
p.V280Ec.839T>A Inherited ArrhythmiaLQTSSIFT: deleterious
Polyphen: probably damaging
ReportsInherited ArrhythmiaLQTS Genetic testing in the long QT syndrome: development and validation of an efficient approach to genotyping in clinical practice. JAMA. 2005 294(23):2975-80. 16414944
Inherited ArrhythmiaLQTS Spectrum and prevalence of mutations from the first 2,500 consecutive unrelated patients referred for the FAMILION long QT syndrome genetic test. Heart Rhythm. 2009 6(9):1297-303. 19716085
p.V280Ac.839T>C Inherited ArrhythmiaLQTSSIFT:
Polyphen:
ReportsInherited ArrhythmiaLQTS Asymmetry of parental origin in long QT syndrome: preferential maternal transmission of KCNQ1 variants linked to channel dysfunction. Eur J Hum Genet. 2016 24(8):1160-6. doi: 10.1038/ejhg.2015.257. 26669661