H221Y Summary

KCNH2 H221Y was found in 0 papers (see below) with a total of 0 carriers: 0 had LQT2. H221Y is not present in gnomAD. H221Y has been functionally characterized in 0 papers. This residue is located in a Mild_Hotspot region for LQT2.

In silico predictions, functional data (if available), and location in structure are equivalent to observing 9 individuals unaffected with LQT2 and 1 individuals affected with LQT2.


H221Y Reported Clinical Data

PMID Year Carriers Unaffected LQT2 Other disease
Summary totals might not agree with the literature table because of duplicate patients, which were excluded from the total counts.

H221Y Predictions

PROVEAN scores less than -2 are considered deleterious. REVEL scores higher than 0.5 or 0.75 is considered likely pathogenic (higher sensitivity with the former cutoff, higher specificity with the latter cutoff). A PolyPhen-2 score of 0.85 or greater is considered likely pathogenic. PAM scores reflect the chemistry difference between WT and variant amino acid (more negative being greater difference between the two). BLAST-PSSM reflects the evolutionary conservation of residue substitutions, more negative numbers indicate fewer observations of the specific substitution than is expected.

PAM Score REVEL Score PROVEAN Score Polyphen2 Score BLAST-PSSM
NA 0.577 -1.437 0.928 -1

H221Y has 30 neighbors (found in individuals) within 15 ångströms

A residue within a folded protein on average has nearest neighbors that fall roughly into two shells: a "nearest" neighbor around 5-6 angstroms and a second shell around 11 angstroms. NOTE: some residues appear multiple times at different distances. This results from the fact that the functional Kv11.1 channel is a homotetramer and occasionally the same residue from multiple subunits is present within the 15A window. All variants shown in the rightmost column have been observed in at least one individual in the literature or gnomAD.

ResidueNumber Distance(Å) Variants
206 14.7
207 14.2 S207X
208 13.7 E208X
209 13.2
210 12.6
211 12
212 11.4
213 10.7 D213G
214 10.1 E214X
215 9.3 V215G V215X
216 8.5 T216A
217 7.6
218 6.6
219 5.4 D219V
220 3.8
222 3.8 V222L
223 5.4
224 6.6
225 7.6
226 8.5
227 9.3
228 10.1 A228P A228T A228V A228X
229 10.7 E229X
230 11.4 E230D
231 12
232 12.6 R232C R232P
233 13.2 A233S
234 13.7 L234Del
235 14.2
236 14.7 G236V