Paralogue Annotation for KCNH2 residue 566

Residue details

Gene: KCNH2
Reference Sequences: LRG: LRG_288, Ensembl variant: ENST00000262186 / ENSP00000262186
Amino Acid Position: 566
Reference Amino Acid: C - Cysteine
Protein Domain: Transmembrane/Linker/Pore


Paralogue Variants mapped to KCNH2 residue 566

ParalogueVariantAssociated DiseaseMapping QualityConsensusPubmed
CNGA3C319RCone-rod dystrophyHigh9 25052312, 26355662

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 KCNH2.



KCNH2Y-----SEYGAAV-LFLLMCTFALIAHWLA>C<IWYAIGNMEQPHMDSR----IGWLHNLGDQ592
KCNH1Y-----IEYGAAV-LVLLVCVFGLAAHWMA>C<IWYSIGDYEIFDEDTKTIRNNSWLYQLAMD425
KCNH3Y-----SQYSAVV-LTLLMAVFALLAHWVA>C<VWFYIGQREIESSESELPE-IGWLQELARR405
KCNH4Y-----SQCSAVV-LTLLMSVFALLAHWMA>C<IWYVIGRREMEANDPLLWD-IGWLHELGKR407
KCNH5Y-----LEYGAAV-LVLLVCVFGLVAHWLA>C<IWYSIGDYEVIDEVTNTIQIDSWLYQLALS395
KCNH6Y-----SEYGAAV-LFLLMCTFALIAHWLA>C<IWYAIGNVERPYLEHK----IGWLDSLGVQ443
KCNH7Y-----SEYGAAV-LMLLMCIFALIAHWLA>C<IWYAIGNVERPYLTDK----IGWLDSLGQQ594
KCNH8Y-----SQHSTIV-LTLLMSMFALLAHWMA>C<IWYVIGKMEREDNSLLKWE-VGWLHELGKR401
CNGA1R-----TNYPNIFRISNLVMYIVIIIHWNA>C<VFYSISKAIGFGND-------TWVYPD---336
CNGA2R-----TNYPNIFRISNLVLYILVIIHWNA>C<IYYAISKSIGFGVD-------TWVYPN---311
CNGA3R-----TNYPNMFRIGNLVLYILIIIHWNA>C<IYFAISKFIGFGTD-------SWVYPN---339
CNGA4R-----TAYPNAFRIAKLMLYIFVVIHWNS>C<LYFALSRYLGFGRD-------AWVYPD---205
CNGB1I-----LSKAYVYRVIRTTAYLLYSLHLNS>C<LYYWASAYQGLGST-------HWVYD----826
CNGB3I-----MDKAYIYRVIRTTGYLLFILHINA>C<VYYWASNYEGIGTT-------RWVYD----388
HCN1IFHMTYDLASAVVRIFNLIGMMLLLCHWDG>C<LQFLVPLLQDFPPD-------CWVS-----332
HCN2IFHMTYDLASAVMRICNLISMMLLLCHWDG>C<LQFLVPMLQDFPRN-------CWVS-----401
HCN3IFHMTYDLASAVVRIFNLIGMMLLLCHWDG>C<LQFLVPMLQDFPPD-------CWVS-----285
HCN4IFHMTYDLASAVVRIVNLIGMMLLLCHWDG>C<LQFLVPMLQDFPDD-------CWVS-----452
cons                              > <                              

See full Alignment of Paralogues


Known Variants in KCNH2

ProteinCDSDisease ClassificationDiseasedbSNP linksEffect Prediction
p.C566Fc.1697G>T Inherited ArrhythmiaLQTSSIFT: deleterious
Polyphen: probably damaging
ReportsInherited ArrhythmiaLQTS Mutation site dependent variability of cardiac events in Japanese LQT2 form of congenital long-QT syndrome. Circ J. 2008 72(5):694-9. 18441445
p.C566Sc.1697G>C 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 Large-scale mutational analysis of Kv11.1 reveals molecular insights into type 2 long QT syndrome. Nat Commun. 2014 5:5535. doi: 10.1038/ncomms6535. 25417810
p.C566Gc.1696T>G Inherited ArrhythmiaLQTSSIFT: deleterious
Polyphen: probably damaging
ReportsInherited ArrhythmiaLQTS Prevalence of HCM and long QT syndrome mutations in young sudden cardiac death-related cases. Int J Legal Med. 2011 125(4):565-72. 21499742
p.C566Sc.1696T>A 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